From 36d22d82aa202bb199967e9512281e9a53db42c9 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 21:33:14 +0200 Subject: Adding upstream version 115.7.0esr. 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.../operation/adapter/requestAdapterInfo.spec.js | 55 + .../api/operation/adapter/requestDevice.spec.js | 274 ++ .../webgpu/api/operation/buffers/map.spec.js | 491 ++++ .../api/operation/buffers/map_ArrayBuffer.spec.js | 90 + .../api/operation/buffers/map_detach.spec.js | 80 + .../webgpu/api/operation/buffers/map_oom.spec.js | 121 + .../webgpu/api/operation/buffers/mapping_test.js | 35 + .../webgpu/api/operation/buffers/threading.spec.js | 30 + .../api/operation/command_buffer/basic.spec.js | 104 + .../operation/command_buffer/clearBuffer.spec.js | 55 + .../command_buffer/copyBufferToBuffer.spec.js | 110 + .../command_buffer/copyTextureToTexture.spec.js | 1588 +++++++++++ .../operation/command_buffer/image_copy.spec.js | 1910 +++++++++++++ .../programmable/programmable_state_test.js | 144 + .../programmable/state_tracking.spec.js | 319 +++ .../command_buffer/render/dynamic_state.spec.js | 20 + .../command_buffer/render/state_tracking.spec.js | 636 +++++ .../webgpu/api/operation/compute/basic.spec.js | 166 ++ .../compute_pipeline/entry_point_name.spec.js | 13 + .../operation/compute_pipeline/overrides.spec.js | 505 ++++ .../webgpu/api/operation/device/lost.spec.js | 93 + .../webgpu/webgpu/api/operation/labels.spec.js | 13 + .../memory_sync/buffer/buffer_sync_test.js | 871 ++++++ .../memory_sync/buffer/multiple_buffers.spec.js | 354 +++ .../memory_sync/buffer/single_buffer.spec.js | 257 ++ .../memory_sync/operation_context_helper.js | 317 +++ .../memory_sync/texture/same_subresource.spec.js | 709 +++++ .../memory_sync/texture/texture_sync_test.js | 110 + .../api/operation/onSubmittedWorkDone.spec.js | 57 + .../api/operation/pipeline/default_layout.spec.js | 28 + .../webgpu/api/operation/queue/writeBuffer.spec.js | 233 ++ .../webgpu/webgpu/api/operation/reflection.spec.js | 138 + .../api/operation/render_pass/clear_value.spec.js | 191 ++ .../api/operation/render_pass/resolve.spec.js | 206 ++ .../api/operation/render_pass/storeOp.spec.js | 355 +++ .../api/operation/render_pass/storeop2.spec.js | 84 + .../render_pipeline/alpha_to_coverage.spec.js | 20 + .../render_pipeline/culling_tests.spec.js | 186 ++ .../operation/render_pipeline/overrides.spec.js | 424 +++ .../pipeline_output_targets.spec.js | 462 ++++ .../render_pipeline/primitive_topology.spec.js | 482 ++++ .../operation/render_pipeline/sample_mask.spec.js | 501 ++++ .../vertex_only_render_pipeline.spec.js | 30 + .../webgpu/api/operation/rendering/basic.spec.js | 357 +++ .../operation/rendering/color_target_state.spec.js | 878 ++++++ .../webgpu/api/operation/rendering/depth.spec.js | 546 ++++ .../api/operation/rendering/depth_bias.spec.js | 327 +++ .../operation/rendering/depth_clip_clamp.spec.js | 524 ++++ .../webgpu/api/operation/rendering/draw.spec.js | 745 ++++++ .../api/operation/rendering/indirect_draw.spec.js | 258 ++ .../rendering/robust_access_index.spec.js | 9 + .../webgpu/api/operation/rendering/stencil.spec.js | 575 ++++ .../api/operation/resource_init/buffer.spec.js | 886 ++++++ .../resource_init/check_texture/by_copy.js | 56 + .../resource_init/check_texture/by_ds_test.js | 181 ++ .../resource_init/check_texture/by_sampling.js | 152 ++ .../operation/resource_init/texture_zero.spec.js | 614 +++++ .../api/operation/sampling/anisotropy.spec.js | 326 +++ .../api/operation/sampling/filter_mode.spec.js | 15 + .../api/operation/sampling/lod_clamp.spec.js | 13 + .../shader_module/compilation_info.spec.js | 198 ++ .../texture_view/format_reinterpretation.spec.js | 363 +++ .../webgpu/api/operation/texture_view/read.spec.js | 57 + .../api/operation/texture_view/write.spec.js | 55 + .../webgpu/api/operation/uncapturederror.spec.js | 35 + .../api/operation/vertex_state/correctness.spec.js | 1067 ++++++++ .../operation/vertex_state/index_format.spec.js | 573 ++++ .../webgpu/api/validation/buffer/create.spec.js | 122 + .../webgpu/api/validation/buffer/destroy.spec.js | 102 + .../webgpu/api/validation/buffer/mapping.spec.js | 1130 ++++++++ .../webgpu/api/validation/buffer/threading.spec.js | 15 + .../capability_checks/features/query_types.spec.js | 77 + .../features/texture_formats.spec.js | 446 +++ .../webgpu/api/validation/compute_pipeline.spec.js | 667 +++++ .../webgpu/api/validation/createBindGroup.spec.js | 1135 ++++++++ .../api/validation/createBindGroupLayout.spec.js | 456 ++++ .../api/validation/createPipelineLayout.spec.js | 157 ++ .../webgpu/api/validation/createSampler.spec.js | 56 + .../webgpu/api/validation/createTexture.spec.js | 877 ++++++ .../webgpu/api/validation/createView.spec.js | 333 +++ .../webgpu/api/validation/debugMarker.spec.js | 99 + .../validation/encoding/beginComputePass.spec.js | 194 ++ .../validation/encoding/beginRenderPass.spec.js | 213 ++ .../validation/encoding/cmds/clearBuffer.spec.js | 242 ++ .../validation/encoding/cmds/compute_pass.spec.js | 251 ++ .../encoding/cmds/copyBufferToBuffer.spec.js | 320 +++ .../encoding/cmds/copyTextureToTexture.spec.js | 873 ++++++ .../api/validation/encoding/cmds/debug.spec.js | 65 + .../validation/encoding/cmds/index_access.spec.js | 163 ++ .../validation/encoding/cmds/render/draw.spec.js | 827 ++++++ .../encoding/cmds/render/dynamic_state.spec.js | 296 ++ .../encoding/cmds/render/indirect_draw.spec.js | 203 ++ .../api/validation/encoding/cmds/render/render.js | 30 + .../encoding/cmds/render/setIndexBuffer.spec.js | 123 + .../encoding/cmds/render/setPipeline.spec.js | 63 + .../encoding/cmds/render/setVertexBuffer.spec.js | 142 + .../encoding/cmds/render/state_tracking.spec.js | 185 ++ .../validation/encoding/cmds/render_pass.spec.js | 15 + .../validation/encoding/cmds/setBindGroup.spec.js | 436 +++ .../encoding/createRenderBundleEncoder.spec.js | 229 ++ .../validation/encoding/encoder_open_state.spec.js | 572 ++++ .../api/validation/encoding/encoder_state.spec.js | 205 ++ .../pipeline_bind_group_compat.spec.js | 757 ++++++ .../validation/encoding/queries/begin_end.spec.js | 163 ++ .../api/validation/encoding/queries/common.js | 30 + .../validation/encoding/queries/general.spec.js | 158 ++ .../encoding/queries/pipeline_statistics.spec.js | 15 + .../encoding/queries/resolveQuerySet.spec.js | 183 ++ .../api/validation/encoding/render_bundle.spec.js | 259 ++ .../webgpu/api/validation/error_scope.spec.js | 285 ++ .../api/validation/getBindGroupLayout.spec.js | 202 ++ .../validation/image_copy/buffer_related.spec.js | 230 ++ .../image_copy/buffer_texture_copies.spec.js | 441 +++ .../webgpu/api/validation/image_copy/image_copy.js | 216 ++ .../validation/image_copy/layout_related.spec.js | 480 ++++ .../validation/image_copy/texture_related.spec.js | 541 ++++ .../api/validation/layout_shader_compat.spec.js | 15 + .../webgpu/api/validation/query_set/create.spec.js | 35 + .../api/validation/query_set/destroy.spec.js | 16 + .../api/validation/queue/buffer_mapped.spec.js | 266 ++ .../CopyExternalImageToTexture.spec.js | 886 ++++++ .../validation/queue/destroyed/query_set.spec.js | 64 + .../webgpu/api/validation/queue/submit.spec.js | 48 + .../api/validation/queue/writeBuffer.spec.js | 189 ++ .../api/validation/queue/writeTexture.spec.js | 111 + .../render_pass/attachment_compatibility.spec.js | 631 +++++ .../render_pass/render_pass_descriptor.spec.js | 1106 ++++++++ .../api/validation/render_pass/resolve.spec.js | 193 ++ .../api/validation/render_pass/storeOp.spec.js | 76 + .../api/validation/render_pipeline/common.js | 62 + .../render_pipeline/depth_stencil_state.spec.js | 205 ++ .../render_pipeline/fragment_state.spec.js | 385 +++ .../validation/render_pipeline/inter_stage.spec.js | 320 +++ .../api/validation/render_pipeline/misc.spec.js | 90 + .../render_pipeline/multisample_state.spec.js | 84 + .../validation/render_pipeline/overrides.spec.js | 502 ++++ .../render_pipeline/primitive_state.spec.js | 43 + .../render_pipeline/shader_module.spec.js | 113 + .../render_pipeline/vertex_state.spec.js | 639 +++++ .../resource_usages/buffer/in_pass_encoder.spec.js | 879 ++++++ .../resource_usages/buffer/in_pass_misc.spec.js | 404 +++ .../texture/in_pass_encoder.spec.js | 1338 +++++++++ .../texture/in_render_common.spec.js | 573 ++++ .../resource_usages/texture/in_render_misc.spec.js | 403 +++ .../validation/shader_module/entry_point.spec.js | 118 + .../api/validation/shader_module/overrides.spec.js | 97 + .../validation/state/device_lost/destroy.spec.js | 957 +++++++ .../webgpu/api/validation/texture/destroy.spec.js | 117 + .../texture/rg11b10ufloat_renderable.spec.js | 109 + .../webgpu/api/validation/validation_test.js | 422 +++ .../mozilla/tests/webgpu/webgpu/capability_info.js | 1808 +++++++++++++ .../mozilla/tests/webgpu/webgpu/constants.js | 62 + .../mozilla/tests/webgpu/webgpu/examples.spec.js | 275 ++ .../mozilla/tests/webgpu/webgpu/gpu_test.js | 941 +++++++ .../webgpu/webgpu/idl/constants/flags.spec.js | 80 + .../tests/webgpu/webgpu/idl/exposed.html.js | 52 + .../tests/webgpu/webgpu/idl/exposed.http.html | 11 + .../tests/webgpu/webgpu/idl/exposed.https.html | 11 + .../mozilla/tests/webgpu/webgpu/idl/idl_test.js | 38 + .../mozilla/tests/webgpu/webgpu/listing.js | 2829 ++++++++++++++++++++ .../shader/execution/evaluation_order.spec.js | 485 ++++ .../shader/execution/expression/binary/binary.js | 9 + .../execution/expression/binary/bitwise.spec.js | 224 ++ .../expression/binary/bool_logical.spec.js | 136 + .../expression/binary/f32_arithmetic.spec.js | 190 ++ .../expression/binary/f32_logical.spec.js | 251 ++ .../expression/binary/i32_arithmetic.spec.js | 149 ++ .../expression/binary/u32_arithmetic.spec.js | 202 ++ .../execution/expression/call/builtin/abs.spec.js | 156 ++ .../execution/expression/call/builtin/acos.spec.js | 56 + .../expression/call/builtin/acosh.spec.js | 60 + .../execution/expression/call/builtin/all.spec.js | 93 + .../execution/expression/call/builtin/any.spec.js | 93 + 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.../execution/expression/call/builtin/ceil.spec.js | 68 + .../expression/call/builtin/clamp.spec.js | 160 ++ .../execution/expression/call/builtin/cos.spec.js | 64 + .../execution/expression/call/builtin/cosh.spec.js | 51 + .../call/builtin/countLeadingZeros.spec.js | 247 ++ .../expression/call/builtin/countOneBits.spec.js | 246 ++ .../call/builtin/countTrailingZeros.spec.js | 247 ++ .../expression/call/builtin/cross.spec.js | 67 + .../expression/call/builtin/degrees.spec.js | 51 + .../expression/call/builtin/determinant.spec.js | 33 + .../expression/call/builtin/distance.spec.js | 172 ++ .../execution/expression/call/builtin/dot.spec.js | 160 ++ .../execution/expression/call/builtin/dpdx.spec.js | 22 + .../expression/call/builtin/dpdxCoarse.spec.js | 21 + .../expression/call/builtin/dpdxFine.spec.js | 20 + .../execution/expression/call/builtin/dpdy.spec.js | 21 + .../expression/call/builtin/dpdyCoarse.spec.js | 21 + .../expression/call/builtin/dpdyFine.spec.js | 20 + .../execution/expression/call/builtin/exp.spec.js | 63 + .../execution/expression/call/builtin/exp2.spec.js | 63 + .../expression/call/builtin/extractBits.spec.js | 338 +++ .../expression/call/builtin/faceForward.spec.js | 195 ++ .../call/builtin/firstLeadingBit.spec.js | 344 +++ .../call/builtin/firstTrailingBit.spec.js | 247 ++ .../expression/call/builtin/floor.spec.js | 67 + .../execution/expression/call/builtin/fma.spec.js | 63 + .../expression/call/builtin/fract.spec.js | 69 + .../expression/call/builtin/frexp.spec.js | 81 + .../expression/call/builtin/fwidth.spec.js | 20 + .../expression/call/builtin/fwidthCoarse.spec.js | 20 + .../expression/call/builtin/fwidthFine.spec.js | 20 + .../expression/call/builtin/insertBits.spec.js | 387 +++ .../expression/call/builtin/inversesqrt.spec.js | 59 + .../expression/call/builtin/ldexp.spec.js | 90 + .../expression/call/builtin/length.spec.js | 107 + .../execution/expression/call/builtin/log.spec.js | 66 + .../execution/expression/call/builtin/log2.spec.js | 66 + .../execution/expression/call/builtin/max.spec.js | 109 + .../execution/expression/call/builtin/min.spec.js | 108 + .../execution/expression/call/builtin/mix.spec.js | 88 + .../execution/expression/call/builtin/modf.spec.js | 357 +++ .../expression/call/builtin/normalize.spec.js | 89 + .../expression/call/builtin/pack2x16float.spec.js | 89 + .../expression/call/builtin/pack2x16snorm.spec.js | 53 + .../expression/call/builtin/pack2x16unorm.spec.js | 53 + .../expression/call/builtin/pack4x8snorm.spec.js | 57 + .../expression/call/builtin/pack4x8unorm.spec.js | 57 + .../execution/expression/call/builtin/pow.spec.js | 61 + .../expression/call/builtin/quantizeToF16.spec.js | 71 + .../expression/call/builtin/radians.spec.js | 49 + .../expression/call/builtin/reflect.spec.js | 141 + .../expression/call/builtin/refract.spec.js | 195 ++ .../expression/call/builtin/reverseBits.spec.js | 811 ++++++ .../expression/call/builtin/round.spec.js | 51 + .../expression/call/builtin/saturate.spec.js | 57 + .../expression/call/builtin/select.spec.js | 227 ++ .../execution/expression/call/builtin/sign.spec.js | 48 + .../execution/expression/call/builtin/sin.spec.js | 63 + .../execution/expression/call/builtin/sinh.spec.js | 51 + .../expression/call/builtin/smoothstep.spec.js | 65 + .../execution/expression/call/builtin/sqrt.spec.js | 51 + .../execution/expression/call/builtin/step.spec.js | 80 + .../expression/call/builtin/storageBarrier.spec.js | 39 + .../execution/expression/call/builtin/tan.spec.js | 57 + .../execution/expression/call/builtin/tanh.spec.js | 48 + .../call/builtin/textureDimension.spec.js | 161 ++ .../expression/call/builtin/textureGather.spec.js | 275 ++ .../call/builtin/textureGatherCompare.spec.js | 135 + .../expression/call/builtin/textureLoad.spec.js | 183 ++ .../call/builtin/textureNumLayers.spec.js | 99 + .../call/builtin/textureNumLevels.spec.js | 66 + .../call/builtin/textureNumSamples.spec.js | 38 + .../expression/call/builtin/textureSample.spec.js | 278 ++ .../call/builtin/textureSampleBias.spec.js | 176 ++ .../call/builtin/textureSampleCompare.spec.js | 150 ++ .../call/builtin/textureSampleCompareLevel.spec.js | 154 ++ .../call/builtin/textureSampleGrad.spec.js | 139 + .../call/builtin/textureSampleLevel.spec.js | 295 ++ .../expression/call/builtin/textureStore.spec.js | 123 + .../expression/call/builtin/transpose.spec.js | 38 + .../expression/call/builtin/trunc.spec.js | 49 + .../call/builtin/unpack2x16float.spec.js | 41 + .../call/builtin/unpack2x16snorm.spec.js | 41 + .../call/builtin/unpack2x16unorm.spec.js | 41 + .../expression/call/builtin/unpack4x8snorm.spec.js | 41 + .../expression/call/builtin/unpack4x8unorm.spec.js | 41 + .../execution/expression/call/builtin/utils.js | 46 + .../call/builtin/workgroupBarrier.spec.js | 39 + .../shader/execution/expression/case_cache.js | 144 + .../shader/execution/expression/expression.js | 988 +++++++ .../expression/unary/bool_logical.spec.js | 32 + .../expression/unary/f32_arithmetic.spec.js | 40 + .../expression/unary/i32_arithmetic.spec.js | 36 + .../shader/execution/expression/unary/unary.js | 6 + .../execution/memory_model/atomicity.spec.js | 103 + .../shader/execution/memory_model/barrier.spec.js | 220 ++ .../execution/memory_model/coherence.spec.js | 528 ++++ .../execution/memory_model/memory_model_setup.js | 962 +++++++ .../shader/execution/memory_model/weak.spec.js | 447 ++++ .../webgpu/webgpu/shader/execution/padding.spec.js | 425 +++ .../webgpu/shader/execution/robust_access.spec.js | 472 ++++ .../shader/execution/robust_access_vertex.spec.js | 553 ++++ .../execution/shader_io/compute_builtins.spec.js | 294 ++ .../execution/shader_io/shared_structs.spec.js | 356 +++ .../webgpu/shader/execution/zero_init.spec.js | 434 +++ .../mozilla/tests/webgpu/webgpu/shader/types.js | 193 ++ .../webgpu/shader/validation/parse/align.spec.js | 182 ++ .../shader/validation/parse/blankspace.spec.js | 51 + .../webgpu/shader/validation/parse/builtin.spec.js | 39 + .../shader/validation/parse/comments.spec.js | 76 + .../shader/validation/parse/identifiers.spec.js | 280 ++ .../webgpu/shader/validation/parse/literal.spec.js | 298 +++ .../shader/validation/parse/semicolon.spec.js | 270 ++ .../webgpu/shader/validation/parse/source.spec.js | 30 + .../shader/validation/parse/static_assert.spec.js | 38 + .../shader/validation/parse/var_and_let.spec.js | 73 + .../validation/resource_interface/bindings.spec.js | 114 + .../shader/validation/resource_interface/util.js | 88 + .../shader/validation/shader_io/builtins.spec.js | 277 ++ .../validation/shader_io/entry_point.spec.js | 138 + .../validation/shader_io/interpolate.spec.js | 145 + .../shader/validation/shader_io/invariant.spec.js | 84 + .../shader/validation/shader_io/locations.spec.js | 260 ++ .../webgpu/shader/validation/shader_io/util.js | 68 + .../shader/validation/shader_validation_test.js | 77 + .../validation/static_assert/static_assert.spec.js | 71 + .../mozilla/tests/webgpu/webgpu/shader/values.js | 94 + .../mozilla/tests/webgpu/webgpu/util/buffer.js | 20 + .../tests/webgpu/webgpu/util/check_contents.js | 207 ++ .../webgpu/webgpu/util/color_space_conversion.js | 241 ++ .../webgpu/webgpu/util/command_buffer_maker.js | 61 + .../mozilla/tests/webgpu/webgpu/util/compare.js | 257 ++ .../mozilla/tests/webgpu/webgpu/util/constants.js | 591 ++++ .../mozilla/tests/webgpu/webgpu/util/conversion.js | 1049 ++++++++ .../tests/webgpu/webgpu/util/copy_to_texture.js | 176 ++ .../tests/webgpu/webgpu/util/create_elements.js | 69 + .../tests/webgpu/webgpu/util/device_pool.js | 361 +++ .../tests/webgpu/webgpu/util/f32_interval.js | 1931 +++++++++++++ .../mozilla/tests/webgpu/webgpu/util/math.js | 949 +++++++ .../mozilla/tests/webgpu/webgpu/util/memory.js | 26 + .../tests/webgpu/webgpu/util/pretty_diff_tables.js | 49 + 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b/testing/web-platform/mozilla/tests/audio-output/selectAudioOutput-user-activation-consumed.https.html @@ -0,0 +1,30 @@ + + +Test selectAudioOutput() after user activation is consumed + + + + + + + diff --git a/testing/web-platform/mozilla/tests/baselinecoverage/wpt_baselinecoverage.html b/testing/web-platform/mozilla/tests/baselinecoverage/wpt_baselinecoverage.html new file mode 100644 index 0000000000..889ee9367f --- /dev/null +++ b/testing/web-platform/mozilla/tests/baselinecoverage/wpt_baselinecoverage.html @@ -0,0 +1,22 @@ + + + +Baseline Coverage + + + diff --git a/testing/web-platform/mozilla/tests/content-security-policy/gen/top.http-rp/script-src-self/sharedworker-import.http.html b/testing/web-platform/mozilla/tests/content-security-policy/gen/top.http-rp/script-src-self/sharedworker-import.http.html new file mode 100644 index 0000000000..c420b940f8 --- /dev/null +++ b/testing/web-platform/mozilla/tests/content-security-policy/gen/top.http-rp/script-src-self/sharedworker-import.http.html @@ -0,0 +1,118 @@ + + + + + + + + + + + + + +
+ + diff --git a/testing/web-platform/mozilla/tests/content-security-policy/gen/top.http-rp/script-src-self/sharedworker-import.https.html b/testing/web-platform/mozilla/tests/content-security-policy/gen/top.http-rp/script-src-self/sharedworker-import.https.html new file mode 100644 index 0000000000..a7bb3de773 --- /dev/null +++ b/testing/web-platform/mozilla/tests/content-security-policy/gen/top.http-rp/script-src-self/sharedworker-import.https.html @@ -0,0 +1,118 @@ + + + + + + + + + + + + + +
+ + diff --git a/testing/web-platform/mozilla/tests/content-security-policy/gen/top.http-rp/script-src-self/worker-import.http.html b/testing/web-platform/mozilla/tests/content-security-policy/gen/top.http-rp/script-src-self/worker-import.http.html new file mode 100644 index 0000000000..482a41186d --- /dev/null +++ b/testing/web-platform/mozilla/tests/content-security-policy/gen/top.http-rp/script-src-self/worker-import.http.html @@ -0,0 +1,118 @@ + + + + + + + + + + + + + +
+ + diff --git a/testing/web-platform/mozilla/tests/content-security-policy/gen/top.http-rp/script-src-self/worker-import.https.html b/testing/web-platform/mozilla/tests/content-security-policy/gen/top.http-rp/script-src-self/worker-import.https.html new file mode 100644 index 0000000000..4d75fa1ccc --- /dev/null +++ b/testing/web-platform/mozilla/tests/content-security-policy/gen/top.http-rp/script-src-self/worker-import.https.html @@ -0,0 +1,118 @@ + + + + + + + + + + + + + +
+ + diff --git a/testing/web-platform/mozilla/tests/content-security-policy/gen/top.http-rp/worker-src-self/sharedworker-import.http.html b/testing/web-platform/mozilla/tests/content-security-policy/gen/top.http-rp/worker-src-self/sharedworker-import.http.html new file mode 100644 index 0000000000..f06c11dd78 --- /dev/null +++ b/testing/web-platform/mozilla/tests/content-security-policy/gen/top.http-rp/worker-src-self/sharedworker-import.http.html @@ -0,0 +1,118 @@ + + + + + + + + + + + + + +
+ + diff --git a/testing/web-platform/mozilla/tests/content-security-policy/gen/top.http-rp/worker-src-self/sharedworker-import.https.html b/testing/web-platform/mozilla/tests/content-security-policy/gen/top.http-rp/worker-src-self/sharedworker-import.https.html new file mode 100644 index 0000000000..1c9483fc05 --- /dev/null +++ b/testing/web-platform/mozilla/tests/content-security-policy/gen/top.http-rp/worker-src-self/sharedworker-import.https.html @@ -0,0 +1,118 @@ + + + + + + + + + + + + + +
+ + diff --git a/testing/web-platform/mozilla/tests/content-security-policy/gen/top.http-rp/worker-src-self/worker-import.http.html b/testing/web-platform/mozilla/tests/content-security-policy/gen/top.http-rp/worker-src-self/worker-import.http.html new file mode 100644 index 0000000000..f8a9e51557 --- /dev/null +++ b/testing/web-platform/mozilla/tests/content-security-policy/gen/top.http-rp/worker-src-self/worker-import.http.html @@ -0,0 +1,118 @@ + + + + + + + + + + + + + +
+ + diff --git a/testing/web-platform/mozilla/tests/content-security-policy/gen/top.http-rp/worker-src-self/worker-import.https.html b/testing/web-platform/mozilla/tests/content-security-policy/gen/top.http-rp/worker-src-self/worker-import.https.html new file mode 100644 index 0000000000..7d6a82d8fc --- /dev/null +++ b/testing/web-platform/mozilla/tests/content-security-policy/gen/top.http-rp/worker-src-self/worker-import.https.html @@ -0,0 +1,118 @@ + + + + + + + + + + + + + +
+ + diff --git a/testing/web-platform/mozilla/tests/content-security-policy/gen/top.meta/script-src-self/sharedworker-import.http.html b/testing/web-platform/mozilla/tests/content-security-policy/gen/top.meta/script-src-self/sharedworker-import.http.html new file mode 100644 index 0000000000..f66bc9ed7c --- /dev/null +++ b/testing/web-platform/mozilla/tests/content-security-policy/gen/top.meta/script-src-self/sharedworker-import.http.html @@ -0,0 +1,119 @@ + + + + + + + + + + + + + + +
+ + diff --git a/testing/web-platform/mozilla/tests/content-security-policy/gen/top.meta/script-src-self/sharedworker-import.https.html b/testing/web-platform/mozilla/tests/content-security-policy/gen/top.meta/script-src-self/sharedworker-import.https.html new file mode 100644 index 0000000000..bcd1f0f2ef --- /dev/null +++ b/testing/web-platform/mozilla/tests/content-security-policy/gen/top.meta/script-src-self/sharedworker-import.https.html @@ -0,0 +1,119 @@ + + + + + + + + + + + + + + +
+ + diff --git a/testing/web-platform/mozilla/tests/content-security-policy/gen/top.meta/script-src-self/worker-import.http.html b/testing/web-platform/mozilla/tests/content-security-policy/gen/top.meta/script-src-self/worker-import.http.html new file mode 100644 index 0000000000..68a610d994 --- /dev/null +++ b/testing/web-platform/mozilla/tests/content-security-policy/gen/top.meta/script-src-self/worker-import.http.html @@ -0,0 +1,119 @@ + + + + + + + + + + + + + + +
+ + diff --git a/testing/web-platform/mozilla/tests/content-security-policy/gen/top.meta/script-src-self/worker-import.https.html b/testing/web-platform/mozilla/tests/content-security-policy/gen/top.meta/script-src-self/worker-import.https.html new file mode 100644 index 0000000000..829e6e2b90 --- /dev/null +++ b/testing/web-platform/mozilla/tests/content-security-policy/gen/top.meta/script-src-self/worker-import.https.html @@ -0,0 +1,119 @@ + + + + + + + + + + + + + + +
+ + diff --git a/testing/web-platform/mozilla/tests/content-security-policy/gen/top.meta/worker-src-self/sharedworker-import.http.html b/testing/web-platform/mozilla/tests/content-security-policy/gen/top.meta/worker-src-self/sharedworker-import.http.html new file mode 100644 index 0000000000..4c6757c65f --- /dev/null +++ b/testing/web-platform/mozilla/tests/content-security-policy/gen/top.meta/worker-src-self/sharedworker-import.http.html @@ -0,0 +1,119 @@ + + + + + + + + + + + + + + +
+ + diff --git a/testing/web-platform/mozilla/tests/content-security-policy/gen/top.meta/worker-src-self/sharedworker-import.https.html b/testing/web-platform/mozilla/tests/content-security-policy/gen/top.meta/worker-src-self/sharedworker-import.https.html new file mode 100644 index 0000000000..2655a33036 --- /dev/null +++ b/testing/web-platform/mozilla/tests/content-security-policy/gen/top.meta/worker-src-self/sharedworker-import.https.html @@ -0,0 +1,119 @@ + + + + + + + + + + + + + + +
+ + diff --git a/testing/web-platform/mozilla/tests/content-security-policy/gen/top.meta/worker-src-self/worker-import.http.html b/testing/web-platform/mozilla/tests/content-security-policy/gen/top.meta/worker-src-self/worker-import.http.html new file mode 100644 index 0000000000..281987acfe --- /dev/null +++ b/testing/web-platform/mozilla/tests/content-security-policy/gen/top.meta/worker-src-self/worker-import.http.html @@ -0,0 +1,119 @@ + + + + + + + + + + + + + + +
+ + diff --git a/testing/web-platform/mozilla/tests/content-security-policy/gen/top.meta/worker-src-self/worker-import.https.html b/testing/web-platform/mozilla/tests/content-security-policy/gen/top.meta/worker-src-self/worker-import.https.html new file mode 100644 index 0000000000..4654856ada --- /dev/null +++ b/testing/web-platform/mozilla/tests/content-security-policy/gen/top.meta/worker-src-self/worker-import.https.html @@ -0,0 +1,119 @@ + + + + + + + + + + + + + + +
+ + diff --git a/testing/web-platform/mozilla/tests/content-security-policy/generic/test-case.sub.js b/testing/web-platform/mozilla/tests/content-security-policy/generic/test-case.sub.js new file mode 100644 index 0000000000..d9a6494dd3 --- /dev/null +++ b/testing/web-platform/mozilla/tests/content-security-policy/generic/test-case.sub.js @@ -0,0 +1,98 @@ +function TestCase(scenarios, sanityChecker) { + function runTest(scenario) { + sanityChecker.checkScenario(scenario, subresourceMap); + + const urls = getRequestURLs(scenario.subresource, + scenario.origin, + scenario.redirection); + + /** @type {Subresource} */ + const subresource = { + subresourceType: scenario.subresource, + url: urls.testUrl, + policyDeliveries: scenario.subresource_policy_deliveries, + }; + + let violationEventResolve; + // Resolved with an array of securitypolicyviolation events. + const violationEventPromise = new Promise(resolve => { + violationEventResolve = resolve; + }); + + promise_test(async t => { + await xhrRequest(urls.announceUrl); + + // Currently only requests from top-level Documents are tested + // (specified by `spec.src.json`) and thus securitypolicyviolation + // events are assumed to be fired on the top-level Document here. + // When adding non-top-level Document tests, securitypolicyviolation + // events should be caught in appropriate contexts. + const violationEvents = []; + const listener = e => { violationEvents.push(e); }; + document.addEventListener('securitypolicyviolation', listener); + + try { + // Send out the real resource request. + // This should tear down the key if it's not blocked. + const mainPromise = invokeRequest(subresource, scenario.source_context_list); + if (scenario.expectation === 'allowed') { + await mainPromise; + } else { + await mainPromise + .then(t.unreached_func('main promise resolved unexpectedly')) + .catch(_ => {}); + } + } finally { + // Always perform post-processing/clean up for + // 'securitypolicyviolation' events and resolve + // `violationEventPromise`, to prevent timeout of the + // promise_test() below. + + // securitypolicyviolation events are fired in a queued task in + // https://w3c.github.io/webappsec-csp/#report-violation + // so wait for queued tasks to run using setTimeout(). + let timeout = 0; + if (scenario.subresource.startsWith('worklet-') && + navigator.userAgent.includes("Firefox/")) { + // https://bugzilla.mozilla.org/show_bug.cgi?id=1808911 + // In Firefox sometimes violations from Worklets are delayed. + timeout = 10; + } + await new Promise(resolve => setTimeout(resolve, timeout)); + + // Pass violation events to `violationEventPromise` (which will be tested + // in the subsequent promise_test()) and clean up the listener. + violationEventResolve(violationEvents); + document.removeEventListener('securitypolicyviolation', listener); + } + + // Send request to check if the key has been torn down. + const assertResult = await xhrRequest(urls.assertUrl); + + // Now check if the value has been torn down. If it's still there, + // we have blocked the request by content security policy. + assert_equals(assertResult.status, scenario.expectation, + "The resource request should be '" + scenario.expectation + "'."); + + }, scenario.test_description); + + promise_test(async _ => { + const violationEvents = await violationEventPromise; + if (scenario.expectation === 'allowed') { + assert_array_equals(violationEvents, [], + 'no violation events should be fired'); + } else { + assert_equals(violationEvents.length, 1, + 'One violation event should be fired'); + } + }, scenario.test_description + ": securitypolicyviolation"); + } // runTest + + function runTests() { + for (const scenario of scenarios) { + runTest(scenario); + } + } + + return {start: runTests}; +} diff --git a/testing/web-platform/mozilla/tests/css/css-contain/content-visibility-hidden-document-reflow-count.html b/testing/web-platform/mozilla/tests/css/css-contain/content-visibility-hidden-document-reflow-count.html new file mode 100644 index 0000000000..69c1c4b7dd --- /dev/null +++ b/testing/web-platform/mozilla/tests/css/css-contain/content-visibility-hidden-document-reflow-count.html @@ -0,0 +1,44 @@ + + + + CSS Contain: Test content-visibility:hidden reflow counts + + + + + + + hello + + + + diff --git a/testing/web-platform/mozilla/tests/css/css-contain/content-visibility-hidden-reflow-count.html b/testing/web-platform/mozilla/tests/css/css-contain/content-visibility-hidden-reflow-count.html new file mode 100644 index 0000000000..c1484d9c54 --- /dev/null +++ b/testing/web-platform/mozilla/tests/css/css-contain/content-visibility-hidden-reflow-count.html @@ -0,0 +1,120 @@ + + + + CSS Contain: Test content-visibility:hidden reflow counts + + + + + + + + +
+ + + diff --git a/testing/web-platform/mozilla/tests/css/css-overflow/scrollbar-gutter-reflow-counts-001.html b/testing/web-platform/mozilla/tests/css/css-overflow/scrollbar-gutter-reflow-counts-001.html new file mode 100644 index 0000000000..aa4ed4667b --- /dev/null +++ b/testing/web-platform/mozilla/tests/css/css-overflow/scrollbar-gutter-reflow-counts-001.html @@ -0,0 +1,115 @@ + + + + CSS Overflow: Test scrollbar-gutter reflow counts + + + + + + + + +

Here is a scroll contaier for testing:

+
+
+
+ + + diff --git a/testing/web-platform/mozilla/tests/css/cssom/media-print-change-print-ref.html b/testing/web-platform/mozilla/tests/css/cssom/media-print-change-print-ref.html new file mode 100644 index 0000000000..1fc00e7e39 --- /dev/null +++ b/testing/web-platform/mozilla/tests/css/cssom/media-print-change-print-ref.html @@ -0,0 +1,2 @@ + +
PASS
diff --git a/testing/web-platform/mozilla/tests/css/cssom/media-print-change-print.html b/testing/web-platform/mozilla/tests/css/cssom/media-print-change-print.html new file mode 100644 index 0000000000..8e9172956c --- /dev/null +++ b/testing/web-platform/mozilla/tests/css/cssom/media-print-change-print.html @@ -0,0 +1,8 @@ + + +
FAIL
+ diff --git a/testing/web-platform/mozilla/tests/css/cssom/window_size_rounding.html b/testing/web-platform/mozilla/tests/css/cssom/window_size_rounding.html new file mode 100644 index 0000000000..695bf8f34b --- /dev/null +++ b/testing/web-platform/mozilla/tests/css/cssom/window_size_rounding.html @@ -0,0 +1,35 @@ + + + +
+
diff --git a/testing/web-platform/mozilla/tests/css/file-selector-button-margin-notref.html b/testing/web-platform/mozilla/tests/css/file-selector-button-margin-notref.html
new file mode 100644
index 0000000000..67fc0af389
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/css/file-selector-button-margin-notref.html
@@ -0,0 +1,2 @@
+
+
diff --git a/testing/web-platform/mozilla/tests/css/file-selector-button-margin.html b/testing/web-platform/mozilla/tests/css/file-selector-button-margin.html
new file mode 100644
index 0000000000..46c1bd0e3e
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/css/file-selector-button-margin.html
@@ -0,0 +1,10 @@
+
+CSS Test: margin can be used to shrink the spacing between the file selector button and its label
+
+
+
+
diff --git a/testing/web-platform/mozilla/tests/css/iframe-os-text-scale-print-ref.html b/testing/web-platform/mozilla/tests/css/iframe-os-text-scale-print-ref.html
new file mode 100644
index 0000000000..ad2922d8a1
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/css/iframe-os-text-scale-print-ref.html
@@ -0,0 +1,5 @@
+
+
+
diff --git a/testing/web-platform/mozilla/tests/css/iframe-os-text-scale-print.sub.html b/testing/web-platform/mozilla/tests/css/iframe-os-text-scale-print.sub.html
new file mode 100644
index 0000000000..d0647da9b3
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/css/iframe-os-text-scale-print.sub.html
@@ -0,0 +1,6 @@
+
+
+
+
diff --git a/testing/web-platform/mozilla/tests/css/mediaqueries/mq-gamut-resist-fingerprinting.html b/testing/web-platform/mozilla/tests/css/mediaqueries/mq-gamut-resist-fingerprinting.html
new file mode 100644
index 0000000000..06424705ac
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/css/mediaqueries/mq-gamut-resist-fingerprinting.html
@@ -0,0 +1,40 @@
+
+Test: color-gamut only matches sRGB when resisting fingerprinting
+
+
+
+
+
Test passes if there are two filled green squares and no red.
+
+

+

+

diff --git a/testing/web-platform/mozilla/tests/css/quirks-invalidation-standard-sheet.html b/testing/web-platform/mozilla/tests/css/quirks-invalidation-standard-sheet.html
new file mode 100644
index 0000000000..b926f81af4
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/css/quirks-invalidation-standard-sheet.html
@@ -0,0 +1,14 @@
+
+
+
+

+
diff --git a/testing/web-platform/mozilla/tests/css/reference/ref-filled-green-100px-square.xht b/testing/web-platform/mozilla/tests/css/reference/ref-filled-green-100px-square.xht
new file mode 100644
index 0000000000..9b647491e9
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/css/reference/ref-filled-green-100px-square.xht
@@ -0,0 +1,19 @@
+
+
+ 
+  CSS Reftest Reference
+  
+ 
+ 
+  
Test passes if there are two filled green squares and no red.

+  

+  

+  

+ 
+
diff --git a/testing/web-platform/mozilla/tests/css/resources/iframe-os-text-scale-inner.html b/testing/web-platform/mozilla/tests/css/resources/iframe-os-text-scale-inner.html
new file mode 100644
index 0000000000..be51cc957c
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/css/resources/iframe-os-text-scale-inner.html
@@ -0,0 +1,9 @@
+
+
+TEST
diff --git a/testing/web-platform/mozilla/tests/dom/classList.html b/testing/web-platform/mozilla/tests/dom/classList.html
new file mode 100644
index 0000000000..21d79f49e3
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/dom/classList.html
@@ -0,0 +1,526 @@
+
+
+Test for the classList element attribute
+
+
+

+
diff --git a/testing/web-platform/mozilla/tests/dom/delayed_window_print.html b/testing/web-platform/mozilla/tests/dom/delayed_window_print.html
new file mode 100644
index 0000000000..0bb9977184
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/dom/delayed_window_print.html
@@ -0,0 +1,39 @@
+
+
+Test for delaying window.print() before load
+
+
+
+
diff --git a/testing/web-platform/mozilla/tests/dom/dispatch_select_event.html b/testing/web-platform/mozilla/tests/dom/dispatch_select_event.html
new file mode 100644
index 0000000000..1fb70aa5b1
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/dom/dispatch_select_event.html
@@ -0,0 +1,35 @@
+
+
+
+
+    
+    
+    
+    
+
+
+    
+    
+
+
diff --git a/testing/web-platform/mozilla/tests/dom/focus-invalid-uri-link.html b/testing/web-platform/mozilla/tests/dom/focus-invalid-uri-link.html
new file mode 100644
index 0000000000..5de81c866f
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/dom/focus-invalid-uri-link.html
@@ -0,0 +1,63 @@
+
+
+
+
+
+
+
diff --git a/testing/web-platform/mozilla/tests/dom/range-in-two-selections.html b/testing/web-platform/mozilla/tests/dom/range-in-two-selections.html
new file mode 100644
index 0000000000..a37464d55a
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/dom/range-in-two-selections.html
@@ -0,0 +1,34 @@
+
+
+
+
+
+
+
+
+
+One two
+
+
+
+
diff --git a/testing/web-platform/mozilla/tests/dom/throttling/resources/test.html b/testing/web-platform/mozilla/tests/dom/throttling/resources/test.html
new file mode 100644
index 0000000000..7eb9dd1e40
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/dom/throttling/resources/test.html
@@ -0,0 +1,5 @@
+
+
+
+
+
diff --git a/testing/web-platform/mozilla/tests/dom/throttling/resources/throttling.js b/testing/web-platform/mozilla/tests/dom/throttling/resources/throttling.js
new file mode 100644
index 0000000000..280b0adc0d
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/dom/throttling/resources/throttling.js
@@ -0,0 +1,136 @@
+function waitForLoad() {
+  return new Promise(resolve => addEventListener('load', resolve))
+    .then(() => delay(10));
+}
+
+function delay(timeout) {
+  return new Promise(resolve => step_timeout(() => resolve(), 10));
+}
+
+function busy(work) {
+  return delay(10).then(() => new Promise(resolve => {
+    step_timeout(() => {
+      let end = performance.now() + work;
+      while (performance.now() < end) {
+
+      }
+
+      resolve();
+    }, 1);
+  }));
+}
+
+function getThrottlingRate(delay) {
+  return new Promise(resolve => {
+    let start = performance.now();
+    setTimeout(() => {
+      let rate = Math.floor((performance.now() - start) / delay);
+      resolve(rate);
+    }, delay);
+  });
+}
+
+function addElement(t, element, src) {
+  return new Promise((resolve, reject) => {
+    let e = document.createElement(element);
+    e.addEventListener('load', () => resolve(e));
+    if (src) {
+      e.src = src;
+    }
+    document.body.appendChild(e);
+    t.add_cleanup(() => e.remove());
+  });
+}
+
+function inFrame(t) {
+  return addElement(t, "iframe", "resources/test.html")
+    .then(frame => delay(10).then(() => Promise.resolve(frame.contentWindow)));
+}
+
+function addWebSocket(t, url) {
+  return new Promise((resolve, reject) => {
+    let socket = new WebSocket(url);
+    socket.onopen = () => {
+      t.add_cleanup(() => socket.close());
+      resolve();
+    };
+    socket.onerror = reject;
+  });
+}
+
+function addRTCPeerConnection(t) {
+  return new Promise((resolve, reject) => {
+    let connection = new RTCPeerConnection();
+    t.add_cleanup(() => {
+      connection.close()
+    });
+
+    resolve();
+  });
+}
+
+function addIndexedDB(t) {
+  return new Promise((resolve, reject) => {
+    let iDBState = {
+      running: false,
+      db: null
+    };
+
+    let req = indexedDB.open("testDB", 1);
+
+    req.onupgradeneeded = e => {
+      let db = e.target.result;
+      let store = db.createObjectStore("testOS", {keyPath: "id"});
+      let index = store.createIndex("index", ["col"]);
+    };
+
+    req.onsuccess = e => {
+      let db = iDBState.db = e.target.result;
+      let store = db.transaction("testOS", "readwrite").objectStore("testOS");
+      let ctr = 0;
+
+      iDBState.running = true;
+
+      function putLoop() {
+        if (!iDBState.running) {
+          return;
+        }
+
+        let req = store.put({id: ctr++, col: "foo"});
+        req.onsuccess = putLoop;
+
+        if (!iDBState.request) {
+          iDBState.request = req;
+        }
+      }
+
+      putLoop();
+      resolve();
+    };
+
+    t.add_cleanup(() => {
+      iDBState.running = false;
+      iDBState.db && iDBState.db.close();
+      iDBState.db = null;
+    });
+  });
+}
+
+function addWebAudio(t) {
+  return new Promise(resolve => {
+    let context = new (window.AudioContext || window.webkitAudioContext)();
+    context.onstatechange = () => (context.state === "running") && resolve();
+
+    let gain = context.createGain();
+    gain.gain.value = 0.1;
+    gain.connect(context.destination);
+
+    let webaudionode = context.createOscillator();
+    webaudionode.type = 'square';
+    webaudionode.frequency.value = 440; // value in hertz
+    webaudionode.connect(gain);
+    webaudionode.start();
+
+    t.add_cleanup(() => webaudionode.stop());
+  });
+}
diff --git a/testing/web-platform/mozilla/tests/dom/throttling/resources/ws.sub.js b/testing/web-platform/mozilla/tests/dom/throttling/resources/ws.sub.js
new file mode 100644
index 0000000000..a1ac273a54
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/dom/throttling/resources/ws.sub.js
@@ -0,0 +1,3 @@
+var __SERVER__NAME = "{{host}}";
+var __PORT = "{{ports[ws][0]}}";
+var __PATH = "echo";
diff --git a/testing/web-platform/mozilla/tests/dom/throttling/throttling-1.window.js b/testing/web-platform/mozilla/tests/dom/throttling/throttling-1.window.js
new file mode 100644
index 0000000000..86cefc8a81
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/dom/throttling/throttling-1.window.js
@@ -0,0 +1,10 @@
+// META: script=resources/throttling.js
+
+setup(() => waitForLoad()
+  .then(() => "setup done"));
+
+promise_test(t => busy(100)
+  .then(() => getThrottlingRate(100))
+  .then(rate => {
+    assert_greater_than(rate, 10, "Timeout wasn't throttled");
+  }), "Throttle when all budget has been used.");
diff --git a/testing/web-platform/mozilla/tests/dom/throttling/throttling-2.window.js b/testing/web-platform/mozilla/tests/dom/throttling/throttling-2.window.js
new file mode 100644
index 0000000000..3ccb35dc08
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/dom/throttling/throttling-2.window.js
@@ -0,0 +1,11 @@
+// META: script=resources/throttling.js
+
+setup(() => waitForLoad()
+  .then(() => "setup done"));
+
+promise_test(t => inFrame(t)
+  .then(win => win.busy(100)
+                  .then(() => win.getThrottlingRate(100)))
+  .then(rate => {
+    assert_greater_than(rate, 10, "Timeout wasn't throttled");
+  }), "Throttle iframe when all budget has been used");
diff --git a/testing/web-platform/mozilla/tests/dom/throttling/throttling-3.window.js b/testing/web-platform/mozilla/tests/dom/throttling/throttling-3.window.js
new file mode 100644
index 0000000000..d1c38bcc12
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/dom/throttling/throttling-3.window.js
@@ -0,0 +1,11 @@
+// META: script=resources/throttling.js
+
+setup(() => waitForLoad()
+  .then(() => "setup done"));
+
+promise_test(t => inFrame(t)
+  .then(win => busy(100)
+    .then(() => win.getThrottlingRate(100)))
+  .then(rate => {
+    assert_less_than(rate, 10, "Timeout was throttled");
+  }), "Don't throttle iframe when all budget in parent has been used");
diff --git a/testing/web-platform/mozilla/tests/dom/throttling/throttling-4.window.js b/testing/web-platform/mozilla/tests/dom/throttling/throttling-4.window.js
new file mode 100644
index 0000000000..b072b51809
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/dom/throttling/throttling-4.window.js
@@ -0,0 +1,11 @@
+// META: script=resources/throttling.js
+
+setup(() => waitForLoad()
+  .then(() => "setup done"));
+
+promise_test(t => inFrame(t)
+  .then(win => win.busy(100))
+  .then(() => getThrottlingRate(100))
+  .then(rate => {
+    assert_less_than(rate, 10, "Timeout was throttled");
+  }), "Don't throttle parent when all budget in iframe has been used");
diff --git a/testing/web-platform/mozilla/tests/dom/throttling/throttling-indexeddb.window.js b/testing/web-platform/mozilla/tests/dom/throttling/throttling-indexeddb.window.js
new file mode 100644
index 0000000000..73c734a584
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/dom/throttling/throttling-indexeddb.window.js
@@ -0,0 +1,35 @@
+// META: script=resources/throttling.js
+
+setup(() => waitForLoad()
+  .then(() => "setup done"));
+
+promise_test(t => addIndexedDB(t)
+  .then(() => busy(100))
+  .then(() => getThrottlingRate(100))
+  .then(rate => {
+    assert_less_than(rate, 10, "Timeout was throttled");
+  }), "Don't throttle when there are open IndexedDB transactions.");
+
+promise_test(t => inFrame(t)
+  .then(win => win.addIndexedDB(t))
+  .then(() => busy(100))
+  .then(() => getThrottlingRate(100))
+  .then(rate => {
+    assert_less_than(rate, 10, "Timeout was throttled");
+  }), "Don't throttle when there are open IndexedDB transactions in iframe.");
+
+promise_test(t => inFrame(t)
+  .then(win => addIndexedDB(t)
+    .then(() => win.busy(100))
+    .then(() => win.getThrottlingRate(100)))
+  .then(rate => {
+    assert_less_than(rate, 10, "Timeout was throttled");
+  }), "Don't throttle iframe when there are open IndexedDB transactions in parent.");
+
+promise_test(t => inFrame(t)
+  .then(win => win.addIndexedDB(t)
+                  .then(() => win.busy(100))
+                  .then(() => win.getThrottlingRate(100)))
+  .then(rate => {
+    assert_less_than(rate, 10, "Timeout was throttled");
+  }), "Don't throttle iframe when there are open IndexedDB transactions in iframe.");
diff --git a/testing/web-platform/mozilla/tests/dom/throttling/throttling-webaudio.window.js b/testing/web-platform/mozilla/tests/dom/throttling/throttling-webaudio.window.js
new file mode 100644
index 0000000000..5cd7193788
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/dom/throttling/throttling-webaudio.window.js
@@ -0,0 +1,35 @@
+// META: script=resources/throttling.js
+
+setup(() => waitForLoad()
+  .then(() => "setup done"));
+
+promise_test(t => addWebAudio(t)
+  .then(() => busy(100))
+  .then(() => getThrottlingRate(100))
+  .then(rate => {
+    assert_less_than(rate, 10, "Timeout was throttled");
+  }), "Don't throttle when there is active WebAudio.");
+
+promise_test(t => inFrame(t)
+  .then(win => win.addWebAudio(t))
+  .then(() => busy(100))
+  .then(() => getThrottlingRate(100))
+  .then(rate => {
+    assert_less_than(rate, 10, "Timeout was throttled");
+  }), "Don't throttle when there is active WebAudio in iframe.");
+
+promise_test(t => inFrame(t)
+  .then(win => addWebAudio(t)
+    .then(() => win.busy(100))
+    .then(() => win.getThrottlingRate(100)))
+  .then(rate => {
+    assert_less_than(rate, 10, "Timeout was throttled");
+  }), "Don't throttle iframe when there is active WebAudio in parent.");
+
+promise_test(t => inFrame(t)
+  .then(win => win.addWebAudio(t)
+                  .then(() => win.busy(100))
+                  .then(() => win.getThrottlingRate(100)))
+  .then(rate => {
+    assert_less_than(rate, 10, "Timeout was throttled");
+  }), "Don't throttle iframe when there is active WebAudio in iframe.");
diff --git a/testing/web-platform/mozilla/tests/dom/throttling/throttling-webrtc.window.js b/testing/web-platform/mozilla/tests/dom/throttling/throttling-webrtc.window.js
new file mode 100644
index 0000000000..2842f77e44
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/dom/throttling/throttling-webrtc.window.js
@@ -0,0 +1,35 @@
+// META: script=resources/throttling.js
+
+setup(() => waitForLoad()
+  .then(() => "setup done"));
+
+promise_test(t => addRTCPeerConnection(t)
+  .then(() => busy(100))
+  .then(() => getThrottlingRate(100))
+  .then(rate => {
+    assert_less_than(rate, 10, "Timeout was throttled");
+  }), "Don't throttle when there are open RTCPeerConnections.");
+
+promise_test(t => inFrame(t)
+  .then(win => win.addRTCPeerConnection(t))
+  .then(() => busy(100))
+  .then(() => getThrottlingRate(100))
+  .then(rate => {
+    assert_less_than(rate, 10, "Timeout was throttled");
+  }), "Don't throttle when there are open RTCPeerConnections in iframe.");
+
+promise_test(t => inFrame(t)
+  .then(win => addRTCPeerConnection(t)
+    .then(() => win.busy(100))
+    .then(() => win.getThrottlingRate(100)))
+  .then(rate => {
+    assert_less_than(rate, 10, "Timeout was throttled");
+  }), "Don't throttle iframe when there are open RTCPeerConnections in parent.");
+
+promise_test(t => inFrame(t)
+  .then(win => win.addRTCPeerConnection(t)
+                  .then(() => win.busy(100))
+                  .then(() => win.getThrottlingRate(100)))
+  .then(rate => {
+    assert_less_than(rate, 10, "Timeout was throttled");
+  }), "Don't throttle iframe when there are open RTCPeerConnections in iframe.");
diff --git a/testing/web-platform/mozilla/tests/dom/throttling/throttling-ws.window.js b/testing/web-platform/mozilla/tests/dom/throttling/throttling-ws.window.js
new file mode 100644
index 0000000000..185654e04d
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/dom/throttling/throttling-ws.window.js
@@ -0,0 +1,37 @@
+// META: script=resources/ws.sub.js
+// META: script=resources/throttling.js
+let server = "ws://" + __SERVER__NAME + ":" + __PORT + "/" + __PATH;
+
+setup(() => waitForLoad()
+  .then(() => "setup done"));
+
+promise_test(t => addWebSocket(t, server)
+  .then(() => busy(100))
+  .then(() => getThrottlingRate(100))
+  .then(rate => {
+    assert_less_than(rate, 10, "Timeout was throttled");
+  }), "Don't throttle when there are open WebSockets.");
+
+promise_test(t => inFrame(t)
+  .then(win => win.addWebSocket(t, server))
+  .then(() => busy(100))
+  .then(() => getThrottlingRate(100))
+  .then(rate => {
+    assert_less_than(rate, 10, "Timeout was throttled");
+  }), "Don't throttle when there are open WebSockets in iframe.");
+
+promise_test(t => inFrame(t)
+  .then(win => addWebSocket(t, server)
+    .then(() => win.busy(100))
+    .then(() => win.getThrottlingRate(100)))
+  .then(rate => {
+    assert_less_than(rate, 10, "Timeout was throttled");
+  }), "Don't throttle iframe when there are open WebSockets in parent.");
+
+promise_test(t => inFrame(t)
+  .then(win => win.addWebSocket(t, server)
+                  .then(() => win.busy(100))
+                  .then(() => win.getThrottlingRate(100)))
+  .then(rate => {
+    assert_less_than(rate, 10, "Timeout was throttled");
+  }), "Don't throttle iframe when there are open WebSockets in iframe.");
diff --git a/testing/web-platform/mozilla/tests/editor/delete-space-after-double-click-selection.html b/testing/web-platform/mozilla/tests/editor/delete-space-after-double-click-selection.html
new file mode 100644
index 0000000000..6c065cbc12
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/editor/delete-space-after-double-click-selection.html
@@ -0,0 +1,278 @@
+
+
+
+  
+  
+  Test for Bug 1783641
+  
+  
+  
+  
+  
+
+
+  Mozilla Bug 1783641

+  
+  
+  

+  
+  
+
+
diff --git a/testing/web-platform/mozilla/tests/editor/input-setRangeText-during-noframe-crash.html b/testing/web-platform/mozilla/tests/editor/input-setRangeText-during-noframe-crash.html
new file mode 100644
index 0000000000..815ec994e8
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/editor/input-setRangeText-during-noframe-crash.html
@@ -0,0 +1,18 @@
+
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/mozilla/tests/editor/white-space-handling-in-mail-editor.html b/testing/web-platform/mozilla/tests/editor/white-space-handling-in-mail-editor.html
new file mode 100644
index 0000000000..06fe0acf6e
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/editor/white-space-handling-in-mail-editor.html
@@ -0,0 +1,371 @@
+
+
+
+
+
+
+
+Testing white-space handling in mail editor mode
+
+
+
+
+

+
+
+
diff --git a/testing/web-platform/mozilla/tests/fetch/api/redirect/redirect-referrer-mixed-content.js b/testing/web-platform/mozilla/tests/fetch/api/redirect/redirect-referrer-mixed-content.js
new file mode 100644
index 0000000000..ad59904fd9
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/fetch/api/redirect/redirect-referrer-mixed-content.js
@@ -0,0 +1,51 @@
+if (this.document === undefined) {
+  importScripts("/common/utils.js");
+  importScripts("/resources/testharness.js");
+  importScripts("/fetch/api/resources/utils.js");
+  importScripts("/common/get-host-info.sub.js");
+}
+
+function testReferrerAfterRedirection(desc, redirectUrl, redirectLocation, referrerPolicy, redirectReferrerPolicy, expectedReferrer) {
+  var url = redirectUrl;
+  var urlParameters = "?location=" + encodeURIComponent(redirectLocation);
+
+  if (redirectReferrerPolicy)
+    urlParameters += "&redirect_referrerpolicy=" + redirectReferrerPolicy;
+
+  var requestInit = {"redirect": "follow", "referrerPolicy": referrerPolicy};
+
+    promise_test(function(test) {
+      return fetch(url + urlParameters, requestInit).then(function(response) {
+        assert_equals(response.status, 200, "Inspect header response's status is 200");
+        assert_equals(response.headers.get("x-request-referer"), expectedReferrer ? expectedReferrer : null, "Check referrer header");
+      });
+    }, desc);
+}
+
+var referrerOrigin = get_host_info().HTTPS_ORIGIN + "/";
+var referrerUrl = location.href;
+
+var RESOURCES_DIR = "/fetch/api/resources/";
+var redirectUrl = RESOURCES_DIR + "redirect.py";
+var locationUrl = get_host_info().HTTPS_ORIGIN  + RESOURCES_DIR + "inspect-headers.py?headers=referer";
+var httpLocationUrl =  get_host_info().HTTP_REMOTE_ORIGIN + RESOURCES_DIR + "inspect-headers.py?cors&headers=referer";
+
+testReferrerAfterRedirection("Downgrade, empty init, unsafe-url redirect header ", redirectUrl, httpLocationUrl, "", "unsafe-url", referrerUrl);
+testReferrerAfterRedirection("Downgrade, empty init, no-referrer-when-downgrade redirect header ", redirectUrl, httpLocationUrl, "", "no-referrer-when-downgrade", null);
+testReferrerAfterRedirection("Downgrade, empty init, same-origin redirect header ", redirectUrl, httpLocationUrl, "", "same-origin", null);
+testReferrerAfterRedirection("Downgrade, empty init, origin redirect header ", redirectUrl, httpLocationUrl, "", "origin", referrerOrigin);
+testReferrerAfterRedirection("Downgrade, empty init, origin-when-cross-origin redirect header ", redirectUrl, httpLocationUrl, "", "origin-when-cross-origin", referrerOrigin);
+testReferrerAfterRedirection("Downgrade, empty init, no-referrer redirect header ", redirectUrl, httpLocationUrl, "", "no-referrer", null);
+testReferrerAfterRedirection("Downgrade, empty init, strict-origin redirect header ", redirectUrl, httpLocationUrl, "", "strict-origin", null);
+testReferrerAfterRedirection("Downgrade, empty init, strict-origin-when-cross-origin redirect header ", redirectUrl, httpLocationUrl, "", "strict-origin-when-cross-origin", null);
+
+testReferrerAfterRedirection("Downgrade, empty redirect header, unsafe-url init ", redirectUrl, httpLocationUrl, "unsafe-url", "", referrerUrl);
+testReferrerAfterRedirection("Downgrade, empty redirect header, no-referrer-when-downgrade init ", redirectUrl, httpLocationUrl, "no-referrer-when-downgrade", "", null);
+testReferrerAfterRedirection("Downgrade, empty redirect header, same-origin init ", redirectUrl, httpLocationUrl, "same-origin", "", null);
+testReferrerAfterRedirection("Downgrade, empty redirect header, origin init ", redirectUrl, httpLocationUrl, "origin", "", referrerOrigin);
+testReferrerAfterRedirection("Downgrade, empty redirect header, origin-when-cross-origin init ", redirectUrl, httpLocationUrl, "origin-when-cross-origin", "", referrerOrigin);
+testReferrerAfterRedirection("Downgrade, empty redirect header, no-referrer init ", redirectUrl, httpLocationUrl, "no-referrer", "", null);
+testReferrerAfterRedirection("Downgrade, empty redirect header, strict-origin init ", redirectUrl, httpLocationUrl, "strict-origin", "", null);
+testReferrerAfterRedirection("Downgrade, empty redirect header, strict-origin-when-cross-origin init ", redirectUrl, httpLocationUrl, "strict-origin-when-cross-origin", "", null);
+
+
diff --git a/testing/web-platform/mozilla/tests/fetch/api/redirect/redirect-referrer.https.html b/testing/web-platform/mozilla/tests/fetch/api/redirect/redirect-referrer.https.html
new file mode 100644
index 0000000000..bcd24892e2
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/fetch/api/redirect/redirect-referrer.https.html
@@ -0,0 +1,18 @@
+
+
+  
+    
+    Fetch: redirect referrer handling, mixed content
+    
+    
+    
+    
+    
+  
+  
+    
+    
+    
+    
+  
+
diff --git a/testing/web-platform/mozilla/tests/fetch/orb/tentative/content-range.sub.window.js b/testing/web-platform/mozilla/tests/fetch/orb/tentative/content-range.sub.window.js
new file mode 100644
index 0000000000..e6fe872719
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/fetch/orb/tentative/content-range.sub.window.js
@@ -0,0 +1,19 @@
+// META: script=/fetch/orb/resources/utils.js
+// META: script=resources/utils.js
+
+const url =
+  "http://{{domains[www1]}}:{{ports[http][0]}}/fetch/orb/resources/image.png";
+
+// Due to web compatibility we filter opaque Response object from the
+// fetch() function in the Fetch specification. See Bug 1823877. This
+// might be removed in the future.
+promise_internal_response_is_filtered(
+  fetchORB(
+    url,
+    { headers: new Headers([["Range", "bytes 10-99"]]) },
+    header("Content-Range", "bytes 10-99/1010"),
+    "slice(10,100)",
+    "status(206)"
+  ),
+  "ORB should filter opaque range of image/png not starting at zero, that isn't subsequent"
+);
diff --git a/testing/web-platform/mozilla/tests/fetch/orb/tentative/img-mime-types-coverage.tentative.sub.html b/testing/web-platform/mozilla/tests/fetch/orb/tentative/img-mime-types-coverage.tentative.sub.html
new file mode 100644
index 0000000000..d5ab1a4cd7
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/fetch/orb/tentative/img-mime-types-coverage.tentative.sub.html
@@ -0,0 +1,43 @@
+
+
+
+

+
diff --git a/testing/web-platform/mozilla/tests/fetch/orb/tentative/known-mime-type.sub.window.js b/testing/web-platform/mozilla/tests/fetch/orb/tentative/known-mime-type.sub.window.js
new file mode 100644
index 0000000000..1779b8ddfc
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/fetch/orb/tentative/known-mime-type.sub.window.js
@@ -0,0 +1,48 @@
+// META: script=/fetch/orb/resources/utils.js
+// META: script=resources/utils.js
+
+const path = "http://{{domains[www1]}}:{{ports[http][0]}}/fetch/orb/resources";
+
+// Due to web compatibility we filter opaque Response object from the
+// fetch() function in the Fetch specification. See Bug 1823877. This
+// might be removed in the future.
+promise_internal_response_is_filtered(
+  fetchORB(`${path}/font.ttf`, null, contentType("font/ttf")),
+  "ORB should filter opaque font/ttf"
+);
+
+// Due to web compatibility we filter opaque Response object from the
+// fetch() function in the Fetch specification. See Bug 1823877. This
+// might be removed in the future.
+promise_internal_response_is_filtered(
+  fetchORB(`${path}/text.txt`, null, contentType("text/plain")),
+  "ORB should filter opaque text/plain"
+);
+
+// Due to web compatibility we filter opaque Response object from the
+// fetch() function in the Fetch specification. See Bug 1823877. This
+// might be removed in the future.
+promise_internal_response_is_filtered(
+  fetchORB(`${path}/data.json`, null, contentType("application/json")),
+  "ORB should filter opaque application/json (non-empty)"
+);
+
+// Due to web compatibility we filter opaque Response object from the
+// fetch() function in the Fetch specification. See Bug 1823877. This
+// might be removed in the future.
+promise_internal_response_is_filtered(
+  fetchORB(`${path}/empty.json`, null, contentType("application/json")),
+  "ORB should filter opaque application/json (empty)"
+);
+
+// Due to web compatibility we filter opaque Response object from the
+// fetch() function in the Fetch specification. See Bug 1823877. This
+// might be removed in the future.
+promise_internal_response_is_filtered(
+  fetchORB(
+    `${path}/data_non_ascii.json`,
+    null,
+    contentType("application/json")
+  ),
+  "ORB should filter opaque application/json which contains non ascii characters"
+);
diff --git a/testing/web-platform/mozilla/tests/fetch/orb/tentative/nosniff.sub.window.js b/testing/web-platform/mozilla/tests/fetch/orb/tentative/nosniff.sub.window.js
new file mode 100644
index 0000000000..7468921b30
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/fetch/orb/tentative/nosniff.sub.window.js
@@ -0,0 +1,44 @@
+// META: script=/fetch/orb/resources/utils.js
+// META: script=resources/utils.js
+
+const path = "http://{{domains[www1]}}:{{ports[http][0]}}/fetch/orb/resources";
+
+// This is an exception that allow more MIME types than the ORB spec does.
+// This is due to web compatibility, but might be removed in the future.
+// See Bug 1828375
+promise_test(
+  async () =>
+    await fetchORB(
+      `${path}/text.txt`,
+      null,
+      contentType("text/plain"),
+      contentTypeOptions("nosniff")
+    ),
+  "ORB shouldn't block opaque text/plain with nosniff"
+);
+
+// Due to web compatibility we filter opaque Response object from the
+// fetch() function in the Fetch specification. See Bug 1823877. This
+// might be removed in the future.
+promise_internal_response_is_filtered(
+  fetchORB(
+    `${path}/data.json`,
+    null,
+    contentType("application/json"),
+    contentTypeOptions("nosniff")
+  ),
+  "ORB should filter opaque-response-blocklisted MIME type with nosniff"
+);
+
+// Due to web compatibility we filter opaque Response object from the
+// fetch() function in the Fetch specification. See Bug 1823877. This
+// might be removed in the future.
+promise_internal_response_is_filtered(
+  fetchORB(
+    `${path}/data.json`,
+    null,
+    contentType(""),
+    contentTypeOptions("nosniff")
+  ),
+  "ORB should filter opaque response with empty Content-Type and nosniff"
+);
diff --git a/testing/web-platform/mozilla/tests/fetch/orb/tentative/resources/utils.js b/testing/web-platform/mozilla/tests/fetch/orb/tentative/resources/utils.js
new file mode 100644
index 0000000000..b4f63b4416
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/fetch/orb/tentative/resources/utils.js
@@ -0,0 +1,21 @@
+function promise_internal_response_is_filtered(fetchPromise, message) {
+  return promise_test(async () => {
+    const response = await fetchPromise;
+
+    // A parent filtered opaque response is defined here as a response that isn't just an
+    // opaque response, but also where the internal response has been made unavailable.
+    // `Response.cloneUnfiltered` is used to inspect the state of the internal response,
+    // which is exactly what we want to be missing in this case.
+    const unfiltered = SpecialPowers.wrap(response).cloneUnfiltered();
+    assert_equals(
+      await SpecialPowers.unwrap(unfiltered).text(),
+      "",
+      "The internal response should be empty"
+    );
+    assert_equals(
+      Array.from(await SpecialPowers.unwrap(unfiltered).headers).length,
+      0,
+      "The internal response should have no headers"
+    );
+  }, message);
+}
diff --git a/testing/web-platform/mozilla/tests/fetch/orb/tentative/status.sub.window.js b/testing/web-platform/mozilla/tests/fetch/orb/tentative/status.sub.window.js
new file mode 100644
index 0000000000..902759b63a
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/fetch/orb/tentative/status.sub.window.js
@@ -0,0 +1,30 @@
+// META: script=/fetch/orb/resources/utils.js
+// META: script=resources/utils.js
+
+const path = "http://{{domains[www1]}}:{{ports[http][0]}}/fetch/orb/resources";
+
+// Due to web compatibility we filter opaque Response object from the
+// fetch() function in the Fetch specification. See Bug 1823877. This
+// might be removed in the future.
+promise_internal_response_is_filtered(
+  fetchORB(
+    `${path}/data.json`,
+    null,
+    contentType("application/json"),
+    "status(206)"
+  ),
+  "ORB should filter opaque-response-blocklisted MIME type with status 206"
+);
+
+// Due to web compatibility we filter opaque Response object from the
+// fetch() function in the Fetch specification. See Bug 1823877. This
+// might be removed in the future.
+promise_internal_response_is_filtered(
+  fetchORB(
+    `${path}/data.json`,
+    null,
+    contentType("application/json"),
+    "status(302)"
+  ),
+  "ORB should filter opaque range of image/png not starting at zero, that isn't subsequent"
+);
diff --git a/testing/web-platform/mozilla/tests/focus/Range_collapse.html b/testing/web-platform/mozilla/tests/focus/Range_collapse.html
new file mode 100644
index 0000000000..7c16f16bec
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/focus/Range_collapse.html
@@ -0,0 +1,207 @@
+
+
+focus move tests caused by a call of Range.collapse()
+
+
+
+
Spacer to check whether or not page was scrolled down to focused editor

+
static text

+
content of editor

+
content of outer editor
static content of outer editor
content of inner editor

+
static text

+
anchor

+
diff --git a/testing/web-platform/mozilla/tests/focus/Range_selectNode.html b/testing/web-platform/mozilla/tests/focus/Range_selectNode.html
new file mode 100644
index 0000000000..3975653d2c
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/focus/Range_selectNode.html
@@ -0,0 +1,267 @@
+
+
+focus move tests caused by a call of Range.selectNode() and Range.selectNodeContents()
+
+
+
+
Spacer to check whether or not page was scrolled down to focused editor

+
static text

+
content of editor

+
content of outer editor
static content of outer editor
content of inner editor

+
static text

+
anchor

+
diff --git a/testing/web-platform/mozilla/tests/focus/Range_setEnd.html b/testing/web-platform/mozilla/tests/focus/Range_setEnd.html
new file mode 100644
index 0000000000..e1eed4ae71
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/focus/Range_setEnd.html
@@ -0,0 +1,364 @@
+
+
+focus move tests caused by a call of Range.setEnd(), Range.setEndAfter() and Range.setEndBefore()
+
+
+
+
Spacer to check whether or not page was scrolled down to focused editor

+
static text

+
content of editor

+
content of outer editor
static content of outer editor
content of inner editor

+
static text

+
anchor

+
diff --git a/testing/web-platform/mozilla/tests/focus/Range_setStart.html b/testing/web-platform/mozilla/tests/focus/Range_setStart.html
new file mode 100644
index 0000000000..9297aa02ab
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/focus/Range_setStart.html
@@ -0,0 +1,353 @@
+
+
+focus move tests caused by a call of Range.setStart(), Range.setStartAfter() and Range.setStartBefore()
+
+
+
+
Spacer to check whether or not page was scrolled down to focused editor

+
static text

+
content of editor

+
content of outer editor
static content of outer editor
content of inner editor

+
static text

+
anchor

+
diff --git a/testing/web-platform/mozilla/tests/focus/Selection_addRange.html b/testing/web-platform/mozilla/tests/focus/Selection_addRange.html
new file mode 100644
index 0000000000..d94e688158
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/focus/Selection_addRange.html
@@ -0,0 +1,1242 @@
+
+
+focus move tests caused by a call of Selection.addRange()
+
+
+
+
Spacer to check whether or not page was scrolled down to focused editor

+
static text

+
content of editor

+
content of outer editor
static content of outer editor
content of inner editor

+
static text

+
anchor

+
diff --git a/testing/web-platform/mozilla/tests/focus/Selection_addRange_in_iframe.html b/testing/web-platform/mozilla/tests/focus/Selection_addRange_in_iframe.html
new file mode 100644
index 0000000000..71b7c26c46
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/focus/Selection_addRange_in_iframe.html
@@ -0,0 +1,63 @@
+
+
+focus move and auto scroll tests caused by a call of Selection.addRange() into a contenteditable element in iframe
+
+
+
+
Spacer to check whether or not page was scrolled down to focused editor

+
+
diff --git a/testing/web-platform/mozilla/tests/focus/Selection_addRange_into_iframe.html b/testing/web-platform/mozilla/tests/focus/Selection_addRange_into_iframe.html
new file mode 100644
index 0000000000..e06e9cd17a
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/focus/Selection_addRange_into_iframe.html
@@ -0,0 +1,67 @@
+
+
+focus move tests caused by a call of Selection.addRange() into iframe
+
+
+
+
Spacer to check whether or not page was scrolled down to focused editor

+
Here is an iframe:

+
+
diff --git a/testing/web-platform/mozilla/tests/focus/Selection_addRange_into_iframe_iframe.html b/testing/web-platform/mozilla/tests/focus/Selection_addRange_into_iframe_iframe.html
new file mode 100644
index 0000000000..946d4aa5e7
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/focus/Selection_addRange_into_iframe_iframe.html
@@ -0,0 +1,9 @@
+
+
+
+
Spacer to check whether or not page was scrolled down to focused editor

+
Here are two editors:

+
The first editor.

+
The second editor.

+
The non-editable div.

+
diff --git a/testing/web-platform/mozilla/tests/focus/Selection_collapse.html b/testing/web-platform/mozilla/tests/focus/Selection_collapse.html
new file mode 100644
index 0000000000..2e3050d822
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/focus/Selection_collapse.html
@@ -0,0 +1,148 @@
+
+
+focus move tests caused by a call of Selection.collapse()
+
+
+
+
Spacer to check whether or not page was scrolled down to focused editor

+
static text

+
content of editor

+
content of outer editor
static content of outer editor
content of inner editor

+
static text

+
anchor

+
diff --git a/testing/web-platform/mozilla/tests/focus/Selection_collapseToEnd.html b/testing/web-platform/mozilla/tests/focus/Selection_collapseToEnd.html
new file mode 100644
index 0000000000..f768782650
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/focus/Selection_collapseToEnd.html
@@ -0,0 +1,134 @@
+
+
+focus move tests caused by a call of Selection.collapseToEnd()
+
+
+
+
Spacer to check whether or not page was scrolled down to focused editor

+
static text

+
content of editor

+
content of outer editor
static content of outer editor
content of inner editor

+
static text

+
anchor

+
diff --git a/testing/web-platform/mozilla/tests/focus/Selection_collapseToStart.html b/testing/web-platform/mozilla/tests/focus/Selection_collapseToStart.html
new file mode 100644
index 0000000000..238a436c1b
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/focus/Selection_collapseToStart.html
@@ -0,0 +1,142 @@
+
+
+focus move tests caused by a call of Selection.collapseToStart()
+
+
+
+
Spacer to check whether or not page was scrolled down to focused editor

+
static text

+
content of editor

+
content of outer editor
static content of outer editor
content of inner editor

+
static text

+
anchor

+
diff --git a/testing/web-platform/mozilla/tests/focus/Selection_extend.html b/testing/web-platform/mozilla/tests/focus/Selection_extend.html
new file mode 100644
index 0000000000..62136cc4a3
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/focus/Selection_extend.html
@@ -0,0 +1,189 @@
+
+
+focus move tests caused by a call of Selection.extend()
+
+
+
+
Spacer to check whether or not page was scrolled down to focused editor

+
static text

+
content of editor

+
content of outer editor
static content of outer editor
content of inner editor

+
static text

+
anchor

+
diff --git a/testing/web-platform/mozilla/tests/focus/Selection_removeAllRanges.html b/testing/web-platform/mozilla/tests/focus/Selection_removeAllRanges.html
new file mode 100644
index 0000000000..6e6854d44b
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/focus/Selection_removeAllRanges.html
@@ -0,0 +1,112 @@
+
+
+focus move tests caused by a call of Selection.removeAllRanges()
+
+
+
+
Spacer to check whether or not page was scrolled down to focused editor

+
static text

+
content of editor

+
content of outer editor
static content of outer editor
content of inner editor

+
static text

+
anchor

+
diff --git a/testing/web-platform/mozilla/tests/focus/Selection_removeRange.html b/testing/web-platform/mozilla/tests/focus/Selection_removeRange.html
new file mode 100644
index 0000000000..14e78381d2
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/focus/Selection_removeRange.html
@@ -0,0 +1,112 @@
+
+
+focus move tests caused by a call of Selection.removeRange()
+
+
+
+
Spacer to check whether or not page was scrolled down to focused editor

+
static text

+
content of editor

+
content of outer editor
static content of outer editor
content of inner editor

+
static text

+
anchor

+
diff --git a/testing/web-platform/mozilla/tests/focus/Selection_selectAllChildren.html b/testing/web-platform/mozilla/tests/focus/Selection_selectAllChildren.html
new file mode 100644
index 0000000000..2753e60851
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/focus/Selection_selectAllChildren.html
@@ -0,0 +1,254 @@
+
+
+focus move tests caused by a call of Selection.selectAllChildren()
+
+
+
+
Spacer to check whether or not page was scrolled down to focused editor

+
static text

+
content of editor

+
content of outer editor
static content of outer editor
content of inner editor

+
static text

+
anchor

+
diff --git a/testing/web-platform/mozilla/tests/focus/Selection_setBaseAndExtent.html b/testing/web-platform/mozilla/tests/focus/Selection_setBaseAndExtent.html
new file mode 100644
index 0000000000..7cfc110009
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/focus/Selection_setBaseAndExtent.html
@@ -0,0 +1,926 @@
+
+
+focus move tests caused by a call of Selection.setBaseAndExtent()
+
+
+
+
Spacer to check whether or not page was scrolled down to focused editor

+
static text

+
content of editor

+
content of outer editor
static content of outer editor
content of inner editor

+
static text

+
anchor

+
diff --git a/testing/web-platform/mozilla/tests/focus/delegateFocus-is-focusable.html b/testing/web-platform/mozilla/tests/focus/delegateFocus-is-focusable.html
new file mode 100644
index 0000000000..35fd30f1f6
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/focus/delegateFocus-is-focusable.html
@@ -0,0 +1,19 @@
+
+
+focus move tests caused by a call of Selection.addRange()
+
+
+

+
diff --git a/testing/web-platform/mozilla/tests/focus/focus-before-iframe-loaded-different-site.html b/testing/web-platform/mozilla/tests/focus/focus-before-iframe-loaded-different-site.html
new file mode 100644
index 0000000000..e765990145
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/focus/focus-before-iframe-loaded-different-site.html
@@ -0,0 +1,16 @@
+
+
+focus() before iframe loaded different site
+
+
+
diff --git a/testing/web-platform/mozilla/tests/focus/focus-before-iframe-loaded-same-site.html b/testing/web-platform/mozilla/tests/focus/focus-before-iframe-loaded-same-site.html
new file mode 100644
index 0000000000..fd7c2bffa6
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/focus/focus-before-iframe-loaded-same-site.html
@@ -0,0 +1,16 @@
+
+
+focus() before iframe loaded same site
+
+
+
diff --git a/testing/web-platform/mozilla/tests/focus/focus-next-tick-before-iframe-loaded-different-site.html b/testing/web-platform/mozilla/tests/focus/focus-next-tick-before-iframe-loaded-different-site.html
new file mode 100644
index 0000000000..58310fd687
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/focus/focus-next-tick-before-iframe-loaded-different-site.html
@@ -0,0 +1,16 @@
+
+
+focus() from next tick before iframe loaded different site
+
+
+
diff --git a/testing/web-platform/mozilla/tests/focus/focus-next-tick-before-iframe-loaded-same-site.html b/testing/web-platform/mozilla/tests/focus/focus-next-tick-before-iframe-loaded-same-site.html
new file mode 100644
index 0000000000..01b467718c
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/focus/focus-next-tick-before-iframe-loaded-same-site.html
@@ -0,0 +1,16 @@
+
+
+focus() from next tick before iframe loaded same site
+
+
+
diff --git a/testing/web-platform/mozilla/tests/focus/iframe-focus-event-after-iframe-gets-focus.html b/testing/web-platform/mozilla/tests/focus/iframe-focus-event-after-iframe-gets-focus.html
new file mode 100644
index 0000000000..82a1346ec6
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/focus/iframe-focus-event-after-iframe-gets-focus.html
@@ -0,0 +1,75 @@
+
+
+Test focus event after iframe gets focus
+
+
+
diff --git a/testing/web-platform/mozilla/tests/focus/support/focus-before-iframe-loaded-different-site-inner.html b/testing/web-platform/mozilla/tests/focus/support/focus-before-iframe-loaded-different-site-inner.html
new file mode 100644
index 0000000000..bcf23627d2
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/focus/support/focus-before-iframe-loaded-different-site-inner.html
@@ -0,0 +1,17 @@
+
+
+
+
+focus() before iframe loaded different site
+
+
+
+
+
diff --git a/testing/web-platform/mozilla/tests/focus/support/focus-before-iframe-loaded-different-site-outer.sub.html b/testing/web-platform/mozilla/tests/focus/support/focus-before-iframe-loaded-different-site-outer.sub.html
new file mode 100644
index 0000000000..e95fe7d292
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/focus/support/focus-before-iframe-loaded-different-site-outer.sub.html
@@ -0,0 +1,42 @@
+
+
+
+focus() before iframe loaded different site
+
+
+
+
+
diff --git a/testing/web-platform/mozilla/tests/focus/support/focus-before-iframe-loaded-same-site-inner.html b/testing/web-platform/mozilla/tests/focus/support/focus-before-iframe-loaded-same-site-inner.html
new file mode 100644
index 0000000000..3c277f078f
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/focus/support/focus-before-iframe-loaded-same-site-inner.html
@@ -0,0 +1,17 @@
+
+
+
+
+focus() before iframe loaded same site
+
+
+
+
+
diff --git a/testing/web-platform/mozilla/tests/focus/support/focus-before-iframe-loaded-same-site-outer.html b/testing/web-platform/mozilla/tests/focus/support/focus-before-iframe-loaded-same-site-outer.html
new file mode 100644
index 0000000000..8c829d6d47
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/focus/support/focus-before-iframe-loaded-same-site-outer.html
@@ -0,0 +1,42 @@
+
+
+
+focus() before iframe loaded same site
+
+
+
+
+
diff --git a/testing/web-platform/mozilla/tests/focus/support/focus-next-tick-before-iframe-loaded-different-site-inner.html b/testing/web-platform/mozilla/tests/focus/support/focus-next-tick-before-iframe-loaded-different-site-inner.html
new file mode 100644
index 0000000000..2c1b35f2b2
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/focus/support/focus-next-tick-before-iframe-loaded-different-site-inner.html
@@ -0,0 +1,17 @@
+
+
+
+
+focus() from next tick before iframe loaded different site
+
+
+
+
+
diff --git a/testing/web-platform/mozilla/tests/focus/support/focus-next-tick-before-iframe-loaded-different-site-outer.sub.html b/testing/web-platform/mozilla/tests/focus/support/focus-next-tick-before-iframe-loaded-different-site-outer.sub.html
new file mode 100644
index 0000000000..83a48e303d
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/focus/support/focus-next-tick-before-iframe-loaded-different-site-outer.sub.html
@@ -0,0 +1,50 @@
+
+
+
+focus() from next tick before iframe loaded different site
+
+
+
+
+
diff --git a/testing/web-platform/mozilla/tests/focus/support/focus-next-tick-before-iframe-loaded-same-site-inner.html b/testing/web-platform/mozilla/tests/focus/support/focus-next-tick-before-iframe-loaded-same-site-inner.html
new file mode 100644
index 0000000000..62add75ed9
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/focus/support/focus-next-tick-before-iframe-loaded-same-site-inner.html
@@ -0,0 +1,17 @@
+
+
+
+
+focus() from next tick before iframe loaded same site
+
+
+
+
+
diff --git a/testing/web-platform/mozilla/tests/focus/support/focus-next-tick-before-iframe-loaded-same-site-outer.html b/testing/web-platform/mozilla/tests/focus/support/focus-next-tick-before-iframe-loaded-same-site-outer.html
new file mode 100644
index 0000000000..a68d34039d
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/focus/support/focus-next-tick-before-iframe-loaded-same-site-outer.html
@@ -0,0 +1,50 @@
+
+
+
+focus() from next tick before iframe loaded same site
+
+
+
+
+
diff --git a/testing/web-platform/mozilla/tests/focus/support/iframe-focus-event-after-different-site-iframe-gets-focus-outer.sub.html b/testing/web-platform/mozilla/tests/focus/support/iframe-focus-event-after-different-site-iframe-gets-focus-outer.sub.html
new file mode 100644
index 0000000000..d69580237c
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/focus/support/iframe-focus-event-after-different-site-iframe-gets-focus-outer.sub.html
@@ -0,0 +1,42 @@
+
+
+Iframe focus event after different site iframe gets focus outer
+
+
diff --git a/testing/web-platform/mozilla/tests/focus/support/iframe-focus-event-after-iframe-gets-focus-inner.html b/testing/web-platform/mozilla/tests/focus/support/iframe-focus-event-after-iframe-gets-focus-inner.html
new file mode 100644
index 0000000000..64a360d248
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/focus/support/iframe-focus-event-after-iframe-gets-focus-inner.html
@@ -0,0 +1,31 @@
+
+
+
+  
+  Iframe focus event inner document
+
+
+
Inner

+
+
+
diff --git a/testing/web-platform/mozilla/tests/focus/support/iframe-focus-event-after-same-site-iframe-gets-focus-outer.html b/testing/web-platform/mozilla/tests/focus/support/iframe-focus-event-after-same-site-iframe-gets-focus-outer.html
new file mode 100644
index 0000000000..06040d6485
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/focus/support/iframe-focus-event-after-same-site-iframe-gets-focus-outer.html
@@ -0,0 +1,42 @@
+
+
+Iframe focus event after same site iframe gets focus outer
+
+
diff --git a/testing/web-platform/mozilla/tests/html/browsers/browsing-the-web/read-media/sandboxed-video.html b/testing/web-platform/mozilla/tests/html/browsers/browsing-the-web/read-media/sandboxed-video.html
new file mode 100644
index 0000000000..4c58514e66
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/html/browsers/browsing-the-web/read-media/sandboxed-video.html
@@ -0,0 +1,24 @@
+
+Test load of media document in sandboxed iframe
+
+
+
+
+
diff --git a/testing/web-platform/mozilla/tests/html/rendering/non-replaced-elements/form-controls/range-snap-to-tick-marks-01.html b/testing/web-platform/mozilla/tests/html/rendering/non-replaced-elements/form-controls/range-snap-to-tick-marks-01.html
new file mode 100644
index 0000000000..ed59c3ae99
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/html/rendering/non-replaced-elements/form-controls/range-snap-to-tick-marks-01.html
@@ -0,0 +1,59 @@
+
+
+
+Snap to a slider's tick marks by clicking near them
+
+
+
+
+
+
+
+
+
+
+  
+  
+
+
diff --git a/testing/web-platform/mozilla/tests/html/rendering/non-replaced-elements/form-controls/range-snap-to-tick-marks-02.html b/testing/web-platform/mozilla/tests/html/rendering/non-replaced-elements/form-controls/range-snap-to-tick-marks-02.html
new file mode 100644
index 0000000000..061f34b3a7
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/html/rendering/non-replaced-elements/form-controls/range-snap-to-tick-marks-02.html
@@ -0,0 +1,41 @@
+
+
+
+Snap to an RTL slider's tick marks by clicking near them
+
+
+
+
+
+
+
+
+
+
+  
+  
+
+
diff --git a/testing/web-platform/mozilla/tests/html/rendering/non-replaced-elements/form-controls/range-snap-to-tick-marks-03.html b/testing/web-platform/mozilla/tests/html/rendering/non-replaced-elements/form-controls/range-snap-to-tick-marks-03.html
new file mode 100644
index 0000000000..9ee80199e4
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/html/rendering/non-replaced-elements/form-controls/range-snap-to-tick-marks-03.html
@@ -0,0 +1,45 @@
+
+
+
+Snap to a vertical slider's tick marks by clicking near them
+
+
+
+
+
+
+
+
+
+
+
+  
+  
+
+
diff --git a/testing/web-platform/mozilla/tests/html/semantics/forms/form-submission-0/non-usv-filenames.window.js b/testing/web-platform/mozilla/tests/html/semantics/forms/form-submission-0/non-usv-filenames.window.js
new file mode 100644
index 0000000000..9b5aa88abb
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/html/semantics/forms/form-submission-0/non-usv-filenames.window.js
@@ -0,0 +1,95 @@
+// META: script=/html/semantics/forms/form-submission-0/enctypes-helper.js
+
+// This test is built on the same infrastructure as the WPT tests
+// urlencoded2.window.js, multipart-formdata.window.js and text-plain.window.js,
+// except modified because this file only tests the serialization of filenames.
+// See the enctypes-helper.js file in the regular WPT test suite for more info.
+
+// The `urlencoded`, `multipart` and `textPlain` functions take a `file`
+// property rather than `name` and `value` properties, and the value of
+// `expected` is the serialization of the filename in the given encoding.
+
+function formSubmissionTemplate2(enctype, expectedBuilder) {
+  const formTestFn = formSubmissionTemplate(enctype, expectedBuilder);
+  return ({ file, formEncoding, expected, description }) =>
+    formTestFn({ name: "a", value: file, formEncoding, expected, description });
+}
+
+const urlencoded = formSubmissionTemplate2(
+  "application/x-www-form-urlencoded",
+  filename => `a=${filename}`
+);
+const multipart = formSubmissionTemplate2(
+  "multipart/form-data",
+  (filename, serialized) => {
+    const boundary = serialized.split("\r\n")[0];
+    return [
+      boundary,
+      `Content-Disposition: form-data; name="a"; filename="${filename}"`,
+      "Content-Type: text/plain",
+      "",
+      "", // File contents
+      `${boundary}--`,
+      "",
+    ].join("\r\n");
+  }
+);
+const textPlain = formSubmissionTemplate2(
+  "text/plain",
+  filename => `a=${filename}\r\n`
+);
+
+// -----------------------------------------------------------------------------
+
+(async () => {
+  // This creates an empty filesystem file with an arbitrary name and returns it
+  // as a File object with name "a\uD800b".
+  const file = SpecialPowers.unwrap(
+    await SpecialPowers.createFiles(
+      [{ data: "", options: { name: "a\uD800b", type: "text/plain" } }],
+      files => files[0]
+    )
+  );
+
+  urlencoded({
+    file,
+    formEncoding: "UTF-8",
+    expected: "a%EF%BF%BDb",
+    description: "lone surrogate in filename, UTF-8",
+  });
+
+  urlencoded({
+    file,
+    formEncoding: "windows-1252",
+    expected: "a%26%2365533%3Bb",
+    description: "lone surrogate in filename, windows-1252",
+  });
+
+  multipart({
+    file,
+    formEncoding: "UTF-8",
+    expected: "a\xEF\xBF\xBDb",
+    description: "lone surrogate in filename, UTF-8",
+  });
+
+  multipart({
+    file,
+    formEncoding: "windows-1252",
+    expected: "a�b",
+    description: "lone surrogate in filename, windows-1252",
+  });
+
+  textPlain({
+    file,
+    formEncoding: "UTF-8",
+    expected: "a\xEF\xBF\xBDb",
+    description: "lone surrogate in filename, UTF-8",
+  });
+
+  textPlain({
+    file,
+    formEncoding: "windows-1252",
+    expected: "a�b",
+    description: "lone surrogate in filename, windows-1252",
+  });
+})();
diff --git a/testing/web-platform/mozilla/tests/html/semantics/forms/input-radio-key-navigation.html b/testing/web-platform/mozilla/tests/html/semantics/forms/input-radio-key-navigation.html
new file mode 100644
index 0000000000..2eee99ffaf
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/html/semantics/forms/input-radio-key-navigation.html
@@ -0,0 +1,61 @@
+
+Keyboard navigation on input type=radio
+
+
+
+
+
+
+
+
+
+

+  
+  
+  
+

+

+  
+  
+  
+

+
diff --git a/testing/web-platform/mozilla/tests/html/semantics/forms/textfieldselection/selection-value-interactions.html b/testing/web-platform/mozilla/tests/html/semantics/forms/textfieldselection/selection-value-interactions.html
new file mode 100644
index 0000000000..c6ba07f746
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/html/semantics/forms/textfieldselection/selection-value-interactions.html
@@ -0,0 +1,217 @@
+
+
+
+
+
+

+

+
diff --git a/testing/web-platform/mozilla/tests/html/semantics/forms/the-input-element/range-tick-marks-01-notref.html b/testing/web-platform/mozilla/tests/html/semantics/forms/the-input-element/range-tick-marks-01-notref.html
new file mode 100644
index 0000000000..67591468cf
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/html/semantics/forms/the-input-element/range-tick-marks-01-notref.html
@@ -0,0 +1,3 @@
+
+vertical range input with datalist reference
+
diff --git a/testing/web-platform/mozilla/tests/html/semantics/forms/the-input-element/range-tick-marks-01.html b/testing/web-platform/mozilla/tests/html/semantics/forms/the-input-element/range-tick-marks-01.html
new file mode 100644
index 0000000000..f1bd96f391
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/html/semantics/forms/the-input-element/range-tick-marks-01.html
@@ -0,0 +1,13 @@
+
+vertical range input with datalist
+
+
+
+
+
+
+  
diff --git a/testing/web-platform/mozilla/tests/html/semantics/forms/the-input-element/range-tick-marks-02-notref.html b/testing/web-platform/mozilla/tests/html/semantics/forms/the-input-element/range-tick-marks-02-notref.html
new file mode 100644
index 0000000000..59acde1482
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/html/semantics/forms/the-input-element/range-tick-marks-02-notref.html
@@ -0,0 +1,9 @@
+
+max and min attributes applied to vertical range input with datalist reference
+
+
+  
diff --git a/testing/web-platform/mozilla/tests/html/semantics/forms/the-input-element/range-tick-marks-02.html b/testing/web-platform/mozilla/tests/html/semantics/forms/the-input-element/range-tick-marks-02.html
new file mode 100644
index 0000000000..bd45631d4a
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/html/semantics/forms/the-input-element/range-tick-marks-02.html
@@ -0,0 +1,14 @@
+
+max and min attributes applied to vertical range input with datalist
+
+
+
+
+
+
+
+  
diff --git a/testing/web-platform/mozilla/tests/html/semantics/forms/the-input-element/range-tick-marks-03-ref.html b/testing/web-platform/mozilla/tests/html/semantics/forms/the-input-element/range-tick-marks-03-ref.html
new file mode 100644
index 0000000000..df473920ec
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/html/semantics/forms/the-input-element/range-tick-marks-03-ref.html
@@ -0,0 +1,7 @@
+
+no vertical range tick marks for disabled datalist elements reference
+
+
+  
diff --git a/testing/web-platform/mozilla/tests/html/semantics/forms/the-input-element/range-tick-marks-03.html b/testing/web-platform/mozilla/tests/html/semantics/forms/the-input-element/range-tick-marks-03.html
new file mode 100644
index 0000000000..83b5c2eb66
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/html/semantics/forms/the-input-element/range-tick-marks-03.html
@@ -0,0 +1,15 @@
+
+no vertical range tick marks for disabled datalist elements
+
+
+
+
+
+
+
+
+  
diff --git a/testing/web-platform/mozilla/tests/html/semantics/forms/the-input-element/range-tick-marks-04-ref.html b/testing/web-platform/mozilla/tests/html/semantics/forms/the-input-element/range-tick-marks-04-ref.html
new file mode 100644
index 0000000000..c2bf59e52b
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/html/semantics/forms/the-input-element/range-tick-marks-04-ref.html
@@ -0,0 +1,7 @@
+
+no range tick marks for vertical range tick marks that are step mismatches reference
+
+
+  
diff --git a/testing/web-platform/mozilla/tests/html/semantics/forms/the-input-element/range-tick-marks-04.html b/testing/web-platform/mozilla/tests/html/semantics/forms/the-input-element/range-tick-marks-04.html
new file mode 100644
index 0000000000..a47334b411
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/html/semantics/forms/the-input-element/range-tick-marks-04.html
@@ -0,0 +1,14 @@
+
+no range tick marks for vertical range tick marks that are step mismatches
+
+
+
+
+
+
+  
diff --git a/testing/web-platform/mozilla/tests/html/semantics/forms/time-enter-keypress.html b/testing/web-platform/mozilla/tests/html/semantics/forms/time-enter-keypress.html
new file mode 100644
index 0000000000..2ffeb22cb4
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/html/semantics/forms/time-enter-keypress.html
@@ -0,0 +1,48 @@
+
+Enter submits on time input
+
+
+
+
+
+
+
+
+

+  
+  
+

+

+  
+  
+

+

+  
+  
+

+
diff --git a/testing/web-platform/mozilla/tests/html/semantics/scripting-1/the-script-element/async-dynamic-module-circular.html b/testing/web-platform/mozilla/tests/html/semantics/scripting-1/the-script-element/async-dynamic-module-circular.html
new file mode 100644
index 0000000000..c99893a786
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/html/semantics/scripting-1/the-script-element/async-dynamic-module-circular.html
@@ -0,0 +1,25 @@
+
+
+Load dynamically imported async modules circular
+
+
+
+
diff --git a/testing/web-platform/mozilla/tests/html/semantics/scripting-1/the-script-element/async-dynamic-module-error.html b/testing/web-platform/mozilla/tests/html/semantics/scripting-1/the-script-element/async-dynamic-module-error.html
new file mode 100644
index 0000000000..ff2ac06222
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/html/semantics/scripting-1/the-script-element/async-dynamic-module-error.html
@@ -0,0 +1,25 @@
+
+
+Load dynamically imported async modules which errors
+
+
+
+
diff --git a/testing/web-platform/mozilla/tests/html/semantics/scripting-1/the-script-element/async-dynamic-module.html b/testing/web-platform/mozilla/tests/html/semantics/scripting-1/the-script-element/async-dynamic-module.html
new file mode 100644
index 0000000000..2e1b267492
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/html/semantics/scripting-1/the-script-element/async-dynamic-module.html
@@ -0,0 +1,25 @@
+
+
+Load dynamically imported async modules
+
+
+
+
diff --git a/testing/web-platform/mozilla/tests/html/semantics/scripting-1/the-script-element/async-module-circular.html b/testing/web-platform/mozilla/tests/html/semantics/scripting-1/the-script-element/async-module-circular.html
new file mode 100644
index 0000000000..7540ebb5ec
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/html/semantics/scripting-1/the-script-element/async-module-circular.html
@@ -0,0 +1,28 @@
+
+
+Load async modules circular
+
+
+
+
diff --git a/testing/web-platform/mozilla/tests/html/semantics/scripting-1/the-script-element/async-module-error.html b/testing/web-platform/mozilla/tests/html/semantics/scripting-1/the-script-element/async-module-error.html
new file mode 100644
index 0000000000..c720611080
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/html/semantics/scripting-1/the-script-element/async-module-error.html
@@ -0,0 +1,25 @@
+
+
+Load an async module
+
+
+
+
diff --git a/testing/web-platform/mozilla/tests/html/semantics/scripting-1/the-script-element/async-module.html b/testing/web-platform/mozilla/tests/html/semantics/scripting-1/the-script-element/async-module.html
new file mode 100644
index 0000000000..566e2a379d
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/html/semantics/scripting-1/the-script-element/async-module.html
@@ -0,0 +1,21 @@
+
+
+Load dynamically imported async modules
+
+
+
+
diff --git a/testing/web-platform/mozilla/tests/html/semantics/scripting-1/the-script-element/circular-module-import-with-syntax-error.html b/testing/web-platform/mozilla/tests/html/semantics/scripting-1/the-script-element/circular-module-import-with-syntax-error.html
new file mode 100644
index 0000000000..e472656e34
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/html/semantics/scripting-1/the-script-element/circular-module-import-with-syntax-error.html
@@ -0,0 +1,26 @@
+
+
+Load a module with circular imports and syntax error
+
+
+
+
diff --git a/testing/web-platform/mozilla/tests/html/semantics/scripting-1/the-script-element/create-module-script.html b/testing/web-platform/mozilla/tests/html/semantics/scripting-1/the-script-element/create-module-script.html
new file mode 100644
index 0000000000..44337a0217
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/html/semantics/scripting-1/the-script-element/create-module-script.html
@@ -0,0 +1,25 @@
+
+
+Insert non-async module script
+
+
+
+
diff --git a/testing/web-platform/mozilla/tests/html/semantics/scripting-1/the-script-element/mixed-content-import.https.html b/testing/web-platform/mozilla/tests/html/semantics/scripting-1/the-script-element/mixed-content-import.https.html
new file mode 100644
index 0000000000..5342bd525c
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/html/semantics/scripting-1/the-script-element/mixed-content-import.https.html
@@ -0,0 +1,27 @@
+
+
+Attempt to load a mixed content module graph
+
+
+
+
diff --git a/testing/web-platform/mozilla/tests/html/semantics/scripting-1/the-script-element/module-error-reporting.html b/testing/web-platform/mozilla/tests/html/semantics/scripting-1/the-script-element/module-error-reporting.html
new file mode 100644
index 0000000000..e4c43060b6
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/html/semantics/scripting-1/the-script-element/module-error-reporting.html
@@ -0,0 +1,89 @@
+
+
+Insert non-async module script
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/mozilla/tests/html/semantics/scripting-1/the-script-element/reload-failed-module-script.html b/testing/web-platform/mozilla/tests/html/semantics/scripting-1/the-script-element/reload-failed-module-script.html
new file mode 100644
index 0000000000..b95d3fe330
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/html/semantics/scripting-1/the-script-element/reload-failed-module-script.html
@@ -0,0 +1,41 @@
+
+
+Insert non-async module script
+
+
+
+
diff --git a/testing/web-platform/mozilla/tests/html/semantics/scripting-1/the-script-element/support/async_dynamic_module.js b/testing/web-platform/mozilla/tests/html/semantics/scripting-1/the-script-element/support/async_dynamic_module.js
new file mode 100644
index 0000000000..238dc11402
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/html/semantics/scripting-1/the-script-element/support/async_dynamic_module.js
@@ -0,0 +1,11 @@
+var ns = await import('./async_test_module.js');
+if (ns.default !== 42) {
+  throw new Error("FAIL");
+}
+if (ns.x !== "named") {
+  throw new Error("FAIL");
+}
+if (ns.y !== 39) {
+  throw new Error("FAIL");
+}
+
diff --git a/testing/web-platform/mozilla/tests/html/semantics/scripting-1/the-script-element/support/async_dynamic_module_circular.js b/testing/web-platform/mozilla/tests/html/semantics/scripting-1/the-script-element/support/async_dynamic_module_circular.js
new file mode 100644
index 0000000000..93bfc3aca8
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/html/semantics/scripting-1/the-script-element/support/async_dynamic_module_circular.js
@@ -0,0 +1,5 @@
+try {
+  var ns = await import('./async_test_module_circular_1.js');
+} catch(ns) {
+  throw Error("Fails as expected");
+};
diff --git a/testing/web-platform/mozilla/tests/html/semantics/scripting-1/the-script-element/support/async_dynamic_module_error.js b/testing/web-platform/mozilla/tests/html/semantics/scripting-1/the-script-element/support/async_dynamic_module_error.js
new file mode 100644
index 0000000000..3832960108
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/html/semantics/scripting-1/the-script-element/support/async_dynamic_module_error.js
@@ -0,0 +1,5 @@
+try {
+ await import('./bad_local_export.js');
+} catch(ns) {
+  throw Error("Fails as expected");
+};
diff --git a/testing/web-platform/mozilla/tests/html/semantics/scripting-1/the-script-element/support/async_module.js b/testing/web-platform/mozilla/tests/html/semantics/scripting-1/the-script-element/support/async_module.js
new file mode 100644
index 0000000000..34a590bcfc
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/html/semantics/scripting-1/the-script-element/support/async_module.js
@@ -0,0 +1,14 @@
+import nsPromise from './async_test_module.js';
+
+console.log("hi");
+let ns = await nsPromise;
+
+if (ns.default !== 42) {
+  throw new Error("FAIL");
+}
+if (ns.x !== "named") {
+  throw new Error("FAIL");
+}
+if (ns.y !== 39) {
+  throw new Error("FAIL");
+}
diff --git a/testing/web-platform/mozilla/tests/html/semantics/scripting-1/the-script-element/support/async_module_circular.js b/testing/web-platform/mozilla/tests/html/semantics/scripting-1/the-script-element/support/async_module_circular.js
new file mode 100644
index 0000000000..a9dff71b17
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/html/semantics/scripting-1/the-script-element/support/async_module_circular.js
@@ -0,0 +1,3 @@
+import module from './async_test_module_circular_1.js';
+
+throw new Error("FAIL");
diff --git a/testing/web-platform/mozilla/tests/html/semantics/scripting-1/the-script-element/support/async_module_error.js b/testing/web-platform/mozilla/tests/html/semantics/scripting-1/the-script-element/support/async_module_error.js
new file mode 100644
index 0000000000..3fa6991768
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/html/semantics/scripting-1/the-script-element/support/async_module_error.js
@@ -0,0 +1,4 @@
+import ns from "./async_test_module_failure.js";
+
+throw Error("FAIL");
+
diff --git a/testing/web-platform/mozilla/tests/html/semantics/scripting-1/the-script-element/support/async_test_module.js b/testing/web-platform/mozilla/tests/html/semantics/scripting-1/the-script-element/support/async_test_module.js
new file mode 100644
index 0000000000..201c76eedf
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/html/semantics/scripting-1/the-script-element/support/async_test_module.js
@@ -0,0 +1,12 @@
+await 1;
+await 2;
+export default await Promise.resolve(42);
+
+export const y = await 39;
+export const x = await 'named';
+
+// Bonus: this rejection is not unwrapped
+if (false) {
+  await Promise.reject(42);
+}
+
diff --git a/testing/web-platform/mozilla/tests/html/semantics/scripting-1/the-script-element/support/async_test_module_circular_1.js b/testing/web-platform/mozilla/tests/html/semantics/scripting-1/the-script-element/support/async_test_module_circular_1.js
new file mode 100644
index 0000000000..2fdf67baca
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/html/semantics/scripting-1/the-script-element/support/async_test_module_circular_1.js
@@ -0,0 +1,3 @@
+import module from './async_test_module_circular_2.js';
+
+export default {};
diff --git a/testing/web-platform/mozilla/tests/html/semantics/scripting-1/the-script-element/support/async_test_module_circular_2.js b/testing/web-platform/mozilla/tests/html/semantics/scripting-1/the-script-element/support/async_test_module_circular_2.js
new file mode 100644
index 0000000000..0a09aacc39
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/html/semantics/scripting-1/the-script-element/support/async_test_module_circular_2.js
@@ -0,0 +1,5 @@
+import module from './async_test_module_circular_3.js';
+
+await module.test();
+
+export default {};
diff --git a/testing/web-platform/mozilla/tests/html/semantics/scripting-1/the-script-element/support/async_test_module_circular_3.js b/testing/web-platform/mozilla/tests/html/semantics/scripting-1/the-script-element/support/async_test_module_circular_3.js
new file mode 100644
index 0000000000..d815bc00e4
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/html/semantics/scripting-1/the-script-element/support/async_test_module_circular_3.js
@@ -0,0 +1,8 @@
+import module from './async_test_module_circular_1.js';
+
+export default {
+  async test() {
+    throw new Error("error thrown");
+    return Promise.resolve()
+  }
+};
diff --git a/testing/web-platform/mozilla/tests/html/semantics/scripting-1/the-script-element/support/async_test_module_failure.js b/testing/web-platform/mozilla/tests/html/semantics/scripting-1/the-script-element/support/async_test_module_failure.js
new file mode 100644
index 0000000000..6f823f3003
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/html/semantics/scripting-1/the-script-element/support/async_test_module_failure.js
@@ -0,0 +1,6 @@
+export default 42;
+
+export const named = 'named';
+
+var rejection = Promise.reject(TypeError('I reject this!'));
+await rejection;
diff --git a/testing/web-platform/mozilla/tests/html/semantics/scripting-1/the-script-element/support/bad_local_export.js b/testing/web-platform/mozilla/tests/html/semantics/scripting-1/the-script-element/support/bad_local_export.js
new file mode 100644
index 0000000000..0b3df8de32
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/html/semantics/scripting-1/the-script-element/support/bad_local_export.js
@@ -0,0 +1,3 @@
+// Attempt to export something that doesn't exist.
+
+export missing;
diff --git a/testing/web-platform/mozilla/tests/html/semantics/scripting-1/the-script-element/support/circular_error1.js b/testing/web-platform/mozilla/tests/html/semantics/scripting-1/the-script-element/support/circular_error1.js
new file mode 100644
index 0000000000..f0310fe0b1
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/html/semantics/scripting-1/the-script-element/support/circular_error1.js
@@ -0,0 +1,2 @@
+import { test2 } from "./circular_error2.js";
+import "./circular_error3.js";
diff --git a/testing/web-platform/mozilla/tests/html/semantics/scripting-1/the-script-element/support/circular_error2.js b/testing/web-platform/mozilla/tests/html/semantics/scripting-1/the-script-element/support/circular_error2.js
new file mode 100644
index 0000000000..5b163eab93
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/html/semantics/scripting-1/the-script-element/support/circular_error2.js
@@ -0,0 +1 @@
+import "./circular_error3.js";
diff --git a/testing/web-platform/mozilla/tests/html/semantics/scripting-1/the-script-element/support/circular_error3.js b/testing/web-platform/mozilla/tests/html/semantics/scripting-1/the-script-element/support/circular_error3.js
new file mode 100644
index 0000000000..2589defac8
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/html/semantics/scripting-1/the-script-element/support/circular_error3.js
@@ -0,0 +1 @@
+import "./circular_error1.js";
diff --git a/testing/web-platform/mozilla/tests/html/semantics/scripting-1/the-script-element/support/evaluation-order-setup.mjs b/testing/web-platform/mozilla/tests/html/semantics/scripting-1/the-script-element/support/evaluation-order-setup.mjs
new file mode 100644
index 0000000000..d3f22e9ee0
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/html/semantics/scripting-1/the-script-element/support/evaluation-order-setup.mjs
@@ -0,0 +1,19 @@
+globalThis.setup({allow_uncaught_exception: true});
+
+globalThis.log = [];
+
+globalThis.addEventListener("error",
+    event => globalThis.log.push("global-error", event.error.message));
+globalThis.addEventListener("onunhandledrejection",
+    event => globalThis.log.push('unhandled-promise-rejection'));
+globalThis.addEventListener("load",
+    event => globalThis.log.push("global-load"));
+
+globalThis.unreachable = function() {
+    globalThis.log.push("unreachable");
+}
+
+globalThis.test_load = async_test("Test evaluation order of modules");
+globalThis.testDone = globalThis.test_load.step_func_done(() => {
+  assert_array_equals(globalThis.log, globalThis.expectedLog);
+});
diff --git a/testing/web-platform/mozilla/tests/html/semantics/scripting-1/the-script-element/support/import_resolve_failure.js b/testing/web-platform/mozilla/tests/html/semantics/scripting-1/the-script-element/support/import_resolve_failure.js
new file mode 100644
index 0000000000..a2e2875f20
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/html/semantics/scripting-1/the-script-element/support/import_resolve_failure.js
@@ -0,0 +1,2 @@
+// Import from an unresolvable module specifier.
+import {x} from "unresolvable";
diff --git a/testing/web-platform/mozilla/tests/html/semantics/scripting-1/the-script-element/support/indirect_export_resolve_failure.js b/testing/web-platform/mozilla/tests/html/semantics/scripting-1/the-script-element/support/indirect_export_resolve_failure.js
new file mode 100644
index 0000000000..282fd2ed62
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/html/semantics/scripting-1/the-script-element/support/indirect_export_resolve_failure.js
@@ -0,0 +1,2 @@
+// Export from an unresolvable module specifier.
+export {x, y} from "unresolvable";
diff --git a/testing/web-platform/mozilla/tests/html/semantics/scripting-1/the-script-element/support/missing_import.js b/testing/web-platform/mozilla/tests/html/semantics/scripting-1/the-script-element/support/missing_import.js
new file mode 100644
index 0000000000..885db02dde
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/html/semantics/scripting-1/the-script-element/support/missing_import.js
@@ -0,0 +1,2 @@
+// Import a non-existent export to trigger instantiation failure.
+import {not_found} from "./module.js";
diff --git a/testing/web-platform/mozilla/tests/html/semantics/scripting-1/the-script-element/support/missing_indirect_export.js b/testing/web-platform/mozilla/tests/html/semantics/scripting-1/the-script-element/support/missing_indirect_export.js
new file mode 100644
index 0000000000..8494031b09
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/html/semantics/scripting-1/the-script-element/support/missing_indirect_export.js
@@ -0,0 +1,2 @@
+// Import a non-existent export to trigger instantiation failure.
+export {x, not_found} from "./module.js";
diff --git a/testing/web-platform/mozilla/tests/html/semantics/scripting-1/the-script-element/support/mixed_import.js b/testing/web-platform/mozilla/tests/html/semantics/scripting-1/the-script-element/support/mixed_import.js
new file mode 100644
index 0000000000..371018f1f4
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/html/semantics/scripting-1/the-script-element/support/mixed_import.js
@@ -0,0 +1 @@
+export * from "http://web-platform.test:8000/_mozilla/html/semantics/scripting-1/the-script-element/support/mixed_import2.js"
diff --git a/testing/web-platform/mozilla/tests/html/semantics/scripting-1/the-script-element/support/mixed_import2.js b/testing/web-platform/mozilla/tests/html/semantics/scripting-1/the-script-element/support/mixed_import2.js
new file mode 100644
index 0000000000..60c6c8d8b0
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/html/semantics/scripting-1/the-script-element/support/mixed_import2.js
@@ -0,0 +1 @@
+export default "foo";
diff --git a/testing/web-platform/mozilla/tests/html/semantics/scripting-1/the-script-element/support/module.js b/testing/web-platform/mozilla/tests/html/semantics/scripting-1/the-script-element/support/module.js
new file mode 100644
index 0000000000..1269686475
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/html/semantics/scripting-1/the-script-element/support/module.js
@@ -0,0 +1,2 @@
+export let x = 42;
+moduleRan = true;
diff --git a/testing/web-platform/mozilla/tests/html/semantics/scripting-1/the-script-element/support/module_eval_error.js b/testing/web-platform/mozilla/tests/html/semantics/scripting-1/the-script-element/support/module_eval_error.js
new file mode 100644
index 0000000000..3bd872b2e6
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/html/semantics/scripting-1/the-script-element/support/module_eval_error.js
@@ -0,0 +1,3 @@
+// A module that throws when evaluated.
+
+this = 0;
diff --git a/testing/web-platform/mozilla/tests/html/syntax/charset/README.md b/testing/web-platform/mozilla/tests/html/syntax/charset/README.md
new file mode 100644
index 0000000000..0558ae1cd5
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/html/syntax/charset/README.md
@@ -0,0 +1,7 @@
+The tests in this directory intentionally differ from WebKit and Blink.
+
+These are case where using the real tree builder (with `noscript`) parsing
+as in the scripting enabled mode and with CDATA sections parsing with
+awareness of foreign content differs from WebKit's and Blink's behavior
+that works as if there was a pre-foreign content, pre-template tree builder
+running in the scripting disabled mode.
diff --git a/testing/web-platform/mozilla/tests/html/syntax/charset/in-noscript-after-template.html b/testing/web-platform/mozilla/tests/html/syntax/charset/in-noscript-after-template.html
new file mode 100644
index 0000000000..71ef9144e0
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/html/syntax/charset/in-noscript-after-template.html
@@ -0,0 +1,10 @@
+
+
+
+
+
+
+
Meta in noscript after template (which is also inside the noscript).

+
Test: 

+
If ж, meta takes effect

+
diff --git a/testing/web-platform/mozilla/tests/html/syntax/charset/in-noscript-ncr.html b/testing/web-platform/mozilla/tests/html/syntax/charset/in-noscript-ncr.html
new file mode 100644
index 0000000000..645f151b26
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/html/syntax/charset/in-noscript-ncr.html
@@ -0,0 +1,10 @@
+
+
+
+
+
+
+
Meta with NCR in the encoding label in noscript.

+
Test: 

+
If ж, meta takes effect

+
diff --git a/testing/web-platform/mozilla/tests/html/syntax/charset/in-noscript.html b/testing/web-platform/mozilla/tests/html/syntax/charset/in-noscript.html
new file mode 100644
index 0000000000..e76054d618
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/html/syntax/charset/in-noscript.html
@@ -0,0 +1,10 @@
+
+
+
+
+
+
+
Meta in noscript.

+
Test: 

+
If ж, meta takes effect

+
diff --git a/testing/web-platform/mozilla/tests/html/syntax/charset/in-svg-in-cdata-after-gt.html b/testing/web-platform/mozilla/tests/html/syntax/charset/in-svg-in-cdata-after-gt.html
new file mode 100644
index 0000000000..56783b7afc
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/html/syntax/charset/in-svg-in-cdata-after-gt.html
@@ -0,0 +1,10 @@
+
+
+
+
+
+><meta charset="windows-1251">
+
In SVG in CDATA after greater-than sign in the CDATA (after head).

+
Test: 

+
If ж, meta takes effect

+
diff --git a/testing/web-platform/mozilla/tests/html/syntax/charset/references/in-noscript-after-template-ref.html b/testing/web-platform/mozilla/tests/html/syntax/charset/references/in-noscript-after-template-ref.html
new file mode 100644
index 0000000000..27defe54c0
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/html/syntax/charset/references/in-noscript-after-template-ref.html
@@ -0,0 +1,9 @@
+
+
+
+
+
+
Meta in noscript after template (which is also inside the noscript).

+
Test: ж

+
If ж, meta takes effect

+
diff --git a/testing/web-platform/mozilla/tests/html/syntax/charset/references/in-noscript-ncr-ref.html b/testing/web-platform/mozilla/tests/html/syntax/charset/references/in-noscript-ncr-ref.html
new file mode 100644
index 0000000000..3581ab68db
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/html/syntax/charset/references/in-noscript-ncr-ref.html
@@ -0,0 +1,9 @@
+
+
+
+
+
+
Meta with NCR in the encoding label in noscript.

+
Test: ж

+
If ж, meta takes effect

+
diff --git a/testing/web-platform/mozilla/tests/html/syntax/charset/references/in-noscript-ref.html b/testing/web-platform/mozilla/tests/html/syntax/charset/references/in-noscript-ref.html
new file mode 100644
index 0000000000..9bb9f24b88
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/html/syntax/charset/references/in-noscript-ref.html
@@ -0,0 +1,9 @@
+
+
+
+
+
+
Meta in noscript.

+
Test: ж

+
If ж, meta takes effect

+
diff --git a/testing/web-platform/mozilla/tests/html/syntax/charset/references/in-svg-in-cdata-after-gt-ref.html b/testing/web-platform/mozilla/tests/html/syntax/charset/references/in-svg-in-cdata-after-gt-ref.html
new file mode 100644
index 0000000000..2868f47fc2
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/html/syntax/charset/references/in-svg-in-cdata-after-gt-ref.html
@@ -0,0 +1,10 @@
+
+
+
+
+
+
+
In SVG in CDATA after greater-than sign in the CDATA (after head).

+
Test: ж

+
If ж, meta takes effect

+
diff --git a/testing/web-platform/mozilla/tests/html/syntax/parsing/math-parse01.html b/testing/web-platform/mozilla/tests/html/syntax/parsing/math-parse01.html
new file mode 100644
index 0000000000..3aff716d9f
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/html/syntax/parsing/math-parse01.html
@@ -0,0 +1,62 @@
+
+
+
+math in html: parsing
+
+
+
+
+
math in html: parsing

+
+

+
+

+

+

+
1a

+
⟨⟩

+
𝕂

+
a

+
a

+

+
+
+
diff --git a/testing/web-platform/mozilla/tests/indic-detection/LICENSE b/testing/web-platform/mozilla/tests/indic-detection/LICENSE
new file mode 100644
index 0000000000..604209a804
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/indic-detection/LICENSE
@@ -0,0 +1,359 @@
+Creative Commons Legal Code
+
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+ b. Subject to the above terms and conditions, the license granted here is
+    perpetual (for the duration of the applicable copyright in the Work).
+    Notwithstanding the above, Licensor reserves the right to release the
+    Work under different license terms or to stop distributing the Work at
+    any time; provided, however that any such election will not serve to
+    withdraw this License (or any other license that has been, or is
+    required to be, granted under the terms of this License), and this
+    License will continue in full force and effect unless terminated as
+    stated above.
+
+8. Miscellaneous
+
+ a. Each time You Distribute or Publicly Perform the Work or a Collection,
+    the Licensor offers to the recipient a license to the Work on the same
+    terms and conditions as the license granted to You under this License.
+ b. Each time You Distribute or Publicly Perform an Adaptation, Licensor
+    offers to the recipient a license to the original Work on the same
+    terms and conditions as the license granted to You under this License.
+ c. If any provision of this License is invalid or unenforceable under
+    applicable law, it shall not affect the validity or enforceability of
+    the remainder of the terms of this License, and without further action
+    by the parties to this agreement, such provision shall be reformed to
+    the minimum extent necessary to make such provision valid and
+    enforceable.
+ d. No term or provision of this License shall be deemed waived and no
+    breach consented to unless such waiver or consent shall be in writing
+    and signed by the party to be charged with such waiver or consent.
+ e. This License constitutes the entire agreement between the parties with
+    respect to the Work licensed here. There are no understandings,
+    agreements or representations with respect to the Work not specified
+    here. Licensor shall not be bound by any additional provisions that
+    may appear in any communication from You. This License may not be
+    modified without the mutual written agreement of the Licensor and You.
+ f. The rights granted under, and the subject matter referenced, in this
+    License were drafted utilizing the terminology of the Berne Convention
+    for the Protection of Literary and Artistic Works (as amended on
+    September 28, 1979), the Rome Convention of 1961, the WIPO Copyright
+    Treaty of 1996, the WIPO Performances and Phonograms Treaty of 1996
+    and the Universal Copyright Convention (as revised on July 24, 1971).
+    These rights and subject matter take effect in the relevant
+    jurisdiction in which the License terms are sought to be enforced
+    according to the corresponding provisions of the implementation of
+    those treaty provisions in the applicable national law. If the
+    standard suite of rights granted under applicable copyright law
+    includes additional rights not granted under this License, such
+    additional rights are deemed to be included in the License; this
+    License is not intended to restrict the license of any rights under
+    applicable law.
+
+
+Creative Commons Notice
+
+    Creative Commons is not a party to this License, and makes no warranty
+    whatsoever in connection with the Work. Creative Commons will not be
+    liable to You or any party on any legal theory for any damages
+    whatsoever, including without limitation any general, special,
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+    license. Notwithstanding the foregoing two (2) sentences, if Creative
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+    this trademark restriction does not form part of the License.
+
+    Creative Commons may be contacted at https://creativecommons.org/.
diff --git a/testing/web-platform/mozilla/tests/indic-detection/README.txt b/testing/web-platform/mozilla/tests/indic-detection/README.txt
new file mode 100644
index 0000000000..9fa13a660a
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/indic-detection/README.txt
@@ -0,0 +1,14 @@
+The text (non-markup/JavaScript) content of the files in this directory originates from Wikipedia and
+is licensed under the Creative Commons Attribution-ShareAlike 3.0 Unported license
+.
+
+The content comes from the following articles (and their revisions):
+https://hi.wikipedia.org/w/index.php?title=%E0%A4%AE%E0%A4%82%E0%A4%97%E0%A4%B2_%E0%A4%97%E0%A5%8D%E0%A4%B0%E0%A4%B9&oldid=5105576
+https://ta.wikipedia.org/w/index.php?title=%E0%AE%9A%E0%AF%86%E0%AE%B5%E0%AF%8D%E0%AE%B5%E0%AE%BE%E0%AE%AF%E0%AF%8D_(%E0%AE%95%E0%AF%8B%E0%AE%B3%E0%AF%8D)&oldid=3129711
+
+This directory tests that content meant for intentionally mis-encoded legacy Devanagari and Tamil fonts that Chrome's encoding detector knows about is detected as windows-1252. These fonts assign Devanagari or Tamil glyphs to code points that are symbols or Latin characters in windows-1252. In chardetng, the detection mechanism is determining that the content isn't in any chardetng-supported encoding and, therefore, the fallback is windows-1252.
+
+Tests are missing for the following fonts that Chrome knows about:
+LT TM Barani
+TMNews
+TamilWeb
diff --git a/testing/web-platform/mozilla/tests/indic-detection/baskar-jagran.html b/testing/web-platform/mozilla/tests/indic-detection/baskar-jagran.html
new file mode 100644
index 0000000000..c8de3ec2a4
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/indic-detection/baskar-jagran.html
@@ -0,0 +1,10 @@
+
+
+ע  ע       UUU  UUU  Q ,     " " UUU       ע UUU    UUU   - "S " ٷUUU     
+
+The text content above is a converted extract from the start of the Wikipedia article मंगल ग्रह and
+is licensed under the Creative Commons Attribution-ShareAlike 3.0 Unported license.
diff --git a/testing/web-platform/mozilla/tests/indic-detection/elango.html b/testing/web-platform/mozilla/tests/indic-detection/elango.html
new file mode 100644
index 0000000000..175917cfd8
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/indic-detection/elango.html
@@ -0,0 +1,10 @@
+
+
+NYY֚ (Mars) sVeh|T E[ J Lַ Bh. C sV]X죋 SLY L[L E[.Ceh|T LopV L[] Reh A|RRL CWQPY pV L[L NYY֚ Cef\. U]yz] CeLֺeh T֟eLP TVWo syz[]. CR UTWT둥 LQTT| C BeN| CeL[o NS\ULe Ly|f\.[12] CR]XV CRho NYY֚ G\ TV HTyP. J N֟ L[] CR UTWT NW] E[T֥ fQQe hZL[,  E[ T\ GUXL, T[RehL, TXY]jL, T]zV YT ThL[ LQP. NYY֛ rZpeLX, TY Uּ\jL eh E[RT T\YV. sV UQPX L EVWU] JXTr UX, LTTV NjhT T[RehL J\] U] T[Reh NYY֛XV E[].
+
+The text content above is a converted extract from the start of the Wikipedia article செவ்வாய் (கோள்) and
+is licensed under the Creative Commons Attribution-ShareAlike 3.0 Unported license.
diff --git a/testing/web-platform/mozilla/tests/indic-detection/htchanakya.html b/testing/web-platform/mozilla/tests/indic-detection/htchanakya.html
new file mode 100644
index 0000000000..27c1ce5510
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/indic-detection/htchanakya.html
@@ -0,0 +1,12 @@
+
+
+״  U״       XW  XW  UQ ,     " " XW       U״ XW   U XW   - "S " XW     U " "  XWU     f XW U, ״  XW S U    XW UJ U  XW   U  XW  U f XW , , US U VLW YW  XW    U״ XW  XW W , ܳ i ״ U  S     XWi  UU   U S   XW  XW , ״ XW J XW U  XW f XW     U   XW  XW   UXW XW  
+
+v~{z  UU y XW mU XW  ״    XW     XW  XW  U U S    XW   XW U U U XW Ϧ XW XW  U U   U U, VLW ,  ܴ  U  U m XW U ι , XW striations XW G XWU XW mU  XW ⴿ U XW MW  XW     U XW λ   h    U    XW  U  XW  XW  XWU U   YWU , U ״ XW    f XW , ״ XW  SU XW PJ XW   
+
+The text content above is a converted extract from the start of the Wikipedia article मंगल ग्रह and
+is licensed under the Creative Commons Attribution-ShareAlike 3.0 Unported license.
diff --git a/testing/web-platform/mozilla/tests/indic-detection/shreetam.html b/testing/web-platform/mozilla/tests/indic-detection/shreetam.html
new file mode 100644
index 0000000000..1fcf4ae40f
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/indic-detection/shreetam.html
@@ -0,0 +1,10 @@
+
+
+\ (Mars) `USkzv E J P BS. Cx `ۼx |Px PP Ex.CUSkzv Pa]ԯ P uUS AkzuuP Cshx ]ԯ PP \ CUQx. miں CUPUS UPh a `miں. Cu أ Pnk C BU\k CUPa \{өPU PmkQx.[12] Cu CuSa \ G  Hأmhx. J \ P Cu أ \v Ex QsnU SPͲ, ° Ex  GP, zuUSP, [P, ۉi x SvPͲ Pshx. \ _]UP,  [PЮ US Eu . ` shzx P E J_ , P \[Szx zuUSP J ں zuUS \ E.
+
+The text content above is a converted extract from the start of the Wikipedia article செவ்வாய் (கோள்) and
+is licensed under the Creative Commons Attribution-ShareAlike 3.0 Unported license.
diff --git a/testing/web-platform/mozilla/tests/indic-detection/tab.html b/testing/web-platform/mozilla/tests/indic-detection/tab.html
new file mode 100644
index 0000000000..1dc5ee85bc
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/indic-detection/tab.html
@@ -0,0 +1,10 @@
+
+
+ (Mars) 袰    ݰ. ޶    .袰   袰 ܴ     ޼. 좮 被袰   좮.    ޼ 袬 被裬  좴.[12]      .         ,    , 袰, , ͮ   .  ,   袰  .      ,  颰 袰   袰  .
+
+The text content above is a converted extract from the start of the Wikipedia article செவ்வாய் (கோள்) and
+is licensed under the Creative Commons Attribution-ShareAlike 3.0 Unported license.
diff --git a/testing/web-platform/mozilla/tests/indic-detection/tam.html b/testing/web-platform/mozilla/tests/indic-detection/tam.html
new file mode 100644
index 0000000000..8b4f9d0cbf
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/indic-detection/tam.html
@@ -0,0 +1,10 @@
+
+
+ (Mars) K򂰴F   補 ݰ. ޶ KQL   .ނF ICP  ‚ ܴ  CP   ޼A.  ނ 𣘂O  ņ.  H  ޼ ݂ ނ裬 G 裆A.[12]      .  M꣘    FQ  A N, MJ   K, , , Qͮ  F 裇. J C,   M  . K 􈶜 I  L , I芪K ꃰ   K  J .
+
+The text content above is a converted extract from the start of the Wikipedia article செவ்வாய் (கோள்) and
+is licensed under the Creative Commons Attribution-ShareAlike 3.0 Unported license.
diff --git a/testing/web-platform/mozilla/tests/indic-detection/tboomi.html b/testing/web-platform/mozilla/tests/indic-detection/tboomi.html
new file mode 100644
index 0000000000..3976416449
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/indic-detection/tboomi.html
@@ -0,0 +1,10 @@
+
+
+%NY (Mars) wVfjiT E[ J &L Bj. C wVë SLY &L[L E[.CfjiT LotV &L[] Rfj AiRRL CWPY tV &L[L %NY Cfg\. &U]}~] Cf&Lfj &TfLP %TV+Wo w}~[]. CR &UTW LQTi Cö Bf+Ni Cf&L+[o %N\ULf L}ig\.[12] CR]&X&V CRjo %NY G\ %TV HT}P. J N &L[] CR &UTW NW E[&T gQf jL+[, ˼ E[ &T\ GU+XL, T[RfjL, T+XY]lL, T~V Y TjL+[ %LP. %NY vZtfLX, TY U\lLض fj E[+R &T\+Y&V. wV UPX L EVWU] JƶTv U+X, L%TV %Nlj T[RfjL J\] U] T[Rfj %NY&X&V E[].
+
+The text content above is a converted extract from the start of the Wikipedia article செவ்வாய் (கோள்) and
+is licensed under the Creative Commons Attribution-ShareAlike 3.0 Unported license.
diff --git a/testing/web-platform/mozilla/tests/indic-detection/tscii.html b/testing/web-platform/mozilla/tests/indic-detection/tscii.html
new file mode 100644
index 0000000000..c9d47b4f9f
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/indic-detection/tscii.html
@@ -0,0 +1,10 @@
+
+
+š (Mars) â    .  âɢĢ  ǡ . Ȣ ǡ Ҿ 򾾡  Ȣ ǡ š 츢. ɡ 째 츼Ǣ ¨ .     쨺 째  θ.[12] ɡħ  š   .  Ţ ǡ   ɢ Ч  Ƣ, Ţ¢   âĸ, ̸, , ɢ  ̾ . š¢ 측,   Ţ Ǩ Ȩŧ. â    Ģ , â  ̸ ȡ â  š¢ħ .
+
+The text content above is a converted extract from the start of the Wikipedia article செவ்வாய் (கோள்) and
+is licensed under the Creative Commons Attribution-ShareAlike 3.0 Unported license.
diff --git a/testing/web-platform/mozilla/tests/infrastructure/prefs/prefs-0.html b/testing/web-platform/mozilla/tests/infrastructure/prefs/prefs-0.html
new file mode 100644
index 0000000000..584620392c
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/infrastructure/prefs/prefs-0.html
@@ -0,0 +1,12 @@
+
+
+
+
+

+
+
diff --git a/testing/web-platform/mozilla/tests/infrastructure/prefs/prefs-1.html b/testing/web-platform/mozilla/tests/infrastructure/prefs/prefs-1.html
new file mode 100644
index 0000000000..8f1029d3ff
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/infrastructure/prefs/prefs-1.html
@@ -0,0 +1,11 @@
+
+
+
+
+

+
+
diff --git a/testing/web-platform/mozilla/tests/infrastructure/prefs/prefs-2.html b/testing/web-platform/mozilla/tests/infrastructure/prefs/prefs-2.html
new file mode 100644
index 0000000000..54ebde2ebe
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/infrastructure/prefs/prefs-2.html
@@ -0,0 +1,10 @@
+
+
+
+
+

+
+
diff --git a/testing/web-platform/mozilla/tests/infrastructure/prefs/prefs-false.html b/testing/web-platform/mozilla/tests/infrastructure/prefs/prefs-false.html
new file mode 100644
index 0000000000..667d1e1bf6
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/infrastructure/prefs/prefs-false.html
@@ -0,0 +1,5 @@
+
+
+
+
false

+
diff --git a/testing/web-platform/mozilla/tests/infrastructure/prefs/prefs-true.html b/testing/web-platform/mozilla/tests/infrastructure/prefs/prefs-true.html
new file mode 100644
index 0000000000..df3fe20eff
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/infrastructure/prefs/prefs-true.html
@@ -0,0 +1,5 @@
+
+
+
+
true

+
diff --git a/testing/web-platform/mozilla/tests/infrastructure/specialPowers/specialpowers.html b/testing/web-platform/mozilla/tests/infrastructure/specialPowers/specialpowers.html
new file mode 100644
index 0000000000..38615028d2
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/infrastructure/specialPowers/specialpowers.html
@@ -0,0 +1,7 @@
+Check specialPowers is available in gecko-only tests
+
+
+
+
diff --git a/testing/web-platform/mozilla/tests/mathml/mathvariant/mathvariant-basic-transforms-with-default-font-ref.html b/testing/web-platform/mozilla/tests/mathml/mathvariant/mathvariant-basic-transforms-with-default-font-ref.html
new file mode 100644
index 0000000000..6ebfd75c2f
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/mathml/mathvariant/mathvariant-basic-transforms-with-default-font-ref.html
@@ -0,0 +1,15 @@
+
+
+  
+    
+    Basic mathvariant transforms with the default font (reference)
+  
+  
+    
Test passes if you see three lines of text rendered with corresponding
+      italic, bold, bold-italic characters from the
+      Mathematical Alphanumeric Symbols block:

+    
𝐼𝑡𝑎𝑙𝑖𝑐

+    
𝐁𝐨𝐥𝐝

+    
𝑩𝒐𝒍𝒅𝑰𝒕𝒂𝒍𝒊𝒄

+  
+
diff --git a/testing/web-platform/mozilla/tests/mathml/mathvariant/mathvariant-basic-transforms-with-default-font.html b/testing/web-platform/mozilla/tests/mathml/mathvariant/mathvariant-basic-transforms-with-default-font.html
new file mode 100644
index 0000000000..24c868c495
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/mathml/mathvariant/mathvariant-basic-transforms-with-default-font.html
@@ -0,0 +1,20 @@
+
+
+  
+    
+    Basic mathvariant transforms with the default font
+    
+    
+    
+    
+    
+  
+  
+    
Test passes if you see three lines of text rendered with corresponding
+      italic, bold, bold-italic characters from the
+      Mathematical Alphanumeric Symbols block:

+    
Italic

+    
Bold

+    
BoldItalic

+  
+
diff --git a/testing/web-platform/mozilla/tests/mathml/mathvariant/mathvariant-bold-fraktur-ref.html b/testing/web-platform/mozilla/tests/mathml/mathvariant/mathvariant-bold-fraktur-ref.html
new file mode 100644
index 0000000000..44588948e7
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/mathml/mathvariant/mathvariant-bold-fraktur-ref.html
@@ -0,0 +1,79 @@
+
+
+
+
+mathvariant bold-fraktur (reference)
+
+
+  
+  
Test passes if all the equalities below are true.

+  𝕬=1D56C
+  𝕭=1D56D
+  𝕮=1D56E
+  𝕯=1D56F
+  𝕰=1D570
+  𝕱=1D571
+  𝕲=1D572
+  𝕳=1D573
+  𝕴=1D574
+  𝕵=1D575

+  𝕶=1D576
+  𝕷=1D577
+  𝕸=1D578
+  𝕹=1D579
+  𝕺=1D57A
+  𝕻=1D57B
+  𝕼=1D57C
+  𝕽=1D57D
+  𝕾=1D57E
+  𝕿=1D57F

+  𝖀=1D580
+  𝖁=1D581
+  𝖂=1D582
+  𝖃=1D583
+  𝖄=1D584
+  𝖅=1D585
+  𝖆=1D586
+  𝖇=1D587
+  𝖈=1D588
+  𝖉=1D589

+  𝖊=1D58A
+  𝖋=1D58B
+  𝖌=1D58C
+  𝖍=1D58D
+  𝖎=1D58E
+  𝖏=1D58F
+  𝖐=1D590
+  𝖑=1D591
+  𝖒=1D592
+  𝖓=1D593

+  𝖔=1D594
+  𝖕=1D595
+  𝖖=1D596
+  𝖗=1D597
+  𝖘=1D598
+  𝖙=1D599
+  𝖚=1D59A
+  𝖛=1D59B
+  𝖜=1D59C
+  𝖝=1D59D

+  𝖞=1D59E
+  𝖟=1D59F
+
+
diff --git a/testing/web-platform/mozilla/tests/mathml/mathvariant/mathvariant-bold-fraktur.html b/testing/web-platform/mozilla/tests/mathml/mathvariant/mathvariant-bold-fraktur.html
new file mode 100644
index 0000000000..32d037603b
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/mathml/mathvariant/mathvariant-bold-fraktur.html
@@ -0,0 +1,85 @@
+
+
+
+
+mathvariant bold-fraktur
+
+
+
+
+
+
+
+
+  
+  
Test passes if all the equalities below are true.

+  A=1D56C
+  B=1D56D
+  C=1D56E
+  D=1D56F
+  E=1D570
+  F=1D571
+  G=1D572
+  H=1D573
+  I=1D574
+  J=1D575

+  K=1D576
+  L=1D577
+  M=1D578
+  N=1D579
+  O=1D57A
+  P=1D57B
+  Q=1D57C
+  R=1D57D
+  S=1D57E
+  T=1D57F

+  U=1D580
+  V=1D581
+  W=1D582
+  X=1D583
+  Y=1D584
+  Z=1D585
+  a=1D586
+  b=1D587
+  c=1D588
+  d=1D589

+  e=1D58A
+  f=1D58B
+  g=1D58C
+  h=1D58D
+  i=1D58E
+  j=1D58F
+  k=1D590
+  l=1D591
+  m=1D592
+  n=1D593

+  o=1D594
+  p=1D595
+  q=1D596
+  r=1D597
+  s=1D598
+  t=1D599
+  u=1D59A
+  v=1D59B
+  w=1D59C
+  x=1D59D

+  y=1D59E
+  z=1D59F
+
+
diff --git a/testing/web-platform/mozilla/tests/mathml/mathvariant/mathvariant-bold-italic-ref.html b/testing/web-platform/mozilla/tests/mathml/mathvariant/mathvariant-bold-italic-ref.html
new file mode 100644
index 0000000000..9a93a37e35
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/mathml/mathvariant/mathvariant-bold-italic-ref.html
@@ -0,0 +1,137 @@
+
+
+
+
+mathvariant bold-italic (reference)
+
+
+  
+  
Test passes if all the equalities below are true.

+  𝑨=1D468
+  𝑩=1D469
+  𝑪=1D46A
+  𝑫=1D46B
+  𝑬=1D46C
+  𝑭=1D46D
+  𝑮=1D46E
+  𝑯=1D46F
+  𝑰=1D470
+  𝑱=1D471

+  𝑲=1D472
+  𝑳=1D473
+  𝑴=1D474
+  𝑵=1D475
+  𝑶=1D476
+  𝑷=1D477
+  𝑸=1D478
+  𝑹=1D479
+  𝑺=1D47A
+  𝑻=1D47B

+  𝑼=1D47C
+  𝑽=1D47D
+  𝑾=1D47E
+  𝑿=1D47F
+  𝒀=1D480
+  𝒁=1D481
+  𝒂=1D482
+  𝒃=1D483
+  𝒄=1D484
+  𝒅=1D485

+  𝒆=1D486
+  𝒇=1D487
+  𝒈=1D488
+  𝒉=1D489
+  𝒊=1D48A
+  𝒋=1D48B
+  𝒌=1D48C
+  𝒍=1D48D
+  𝒎=1D48E
+  𝒏=1D48F

+  𝒐=1D490
+  𝒑=1D491
+  𝒒=1D492
+  𝒓=1D493
+  𝒔=1D494
+  𝒕=1D495
+  𝒖=1D496
+  𝒗=1D497
+  𝒘=1D498
+  𝒙=1D499

+  𝒚=1D49A
+  𝒛=1D49B
+  𝜜=1D71C
+  𝜝=1D71D
+  𝜞=1D71E
+  𝜟=1D71F
+  𝜠=1D720
+  𝜡=1D721
+  𝜢=1D722
+  𝜣=1D723

+  𝜤=1D724
+  𝜥=1D725
+  𝜦=1D726
+  𝜧=1D727
+  𝜨=1D728
+  𝜩=1D729
+  𝜪=1D72A
+  𝜫=1D72B
+  𝜬=1D72C
+  𝜭=1D72D

+  𝜮=1D72E
+  𝜯=1D72F
+  𝜰=1D730
+  𝜱=1D731
+  𝜲=1D732
+  𝜳=1D733
+  𝜴=1D734
+  𝜵=1D735
+  𝜶=1D736
+  𝜷=1D737

+  𝜸=1D738
+  𝜹=1D739
+  𝜺=1D73A
+  𝜻=1D73B
+  𝜼=1D73C
+  𝜽=1D73D
+  𝜾=1D73E
+  𝜿=1D73F
+  𝝀=1D740
+  𝝁=1D741

+  𝝂=1D742
+  𝝃=1D743
+  𝝄=1D744
+  𝝅=1D745
+  𝝆=1D746
+  𝝇=1D747
+  𝝈=1D748
+  𝝉=1D749
+  𝝊=1D74A
+  𝝋=1D74B

+  𝝌=1D74C
+  𝝍=1D74D
+  𝝎=1D74E
+  𝝏=1D74F
+  𝝐=1D750
+  𝝑=1D751
+  𝝒=1D752
+  𝝓=1D753
+  𝝔=1D754
+  𝝕=1D755

+
+
diff --git a/testing/web-platform/mozilla/tests/mathml/mathvariant/mathvariant-bold-italic.html b/testing/web-platform/mozilla/tests/mathml/mathvariant/mathvariant-bold-italic.html
new file mode 100644
index 0000000000..725559a571
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/mathml/mathvariant/mathvariant-bold-italic.html
@@ -0,0 +1,143 @@
+
+
+
+
+mathvariant bold-italic
+
+
+
+
+
+
+
+
+  
+  
Test passes if all the equalities below are true.

+  A=1D468
+  B=1D469
+  C=1D46A
+  D=1D46B
+  E=1D46C
+  F=1D46D
+  G=1D46E
+  H=1D46F
+  I=1D470
+  J=1D471

+  K=1D472
+  L=1D473
+  M=1D474
+  N=1D475
+  O=1D476
+  P=1D477
+  Q=1D478
+  R=1D479
+  S=1D47A
+  T=1D47B

+  U=1D47C
+  V=1D47D
+  W=1D47E
+  X=1D47F
+  Y=1D480
+  Z=1D481
+  a=1D482
+  b=1D483
+  c=1D484
+  d=1D485

+  e=1D486
+  f=1D487
+  g=1D488
+  h=1D489
+  i=1D48A
+  j=1D48B
+  k=1D48C
+  l=1D48D
+  m=1D48E
+  n=1D48F

+  o=1D490
+  p=1D491
+  q=1D492
+  r=1D493
+  s=1D494
+  t=1D495
+  u=1D496
+  v=1D497
+  w=1D498
+  x=1D499

+  y=1D49A
+  z=1D49B
+  Α=1D71C
+  Β=1D71D
+  Γ=1D71E
+  Δ=1D71F
+  Ε=1D720
+  Ζ=1D721
+  Η=1D722
+  Θ=1D723

+  Ι=1D724
+  Κ=1D725
+  Λ=1D726
+  Μ=1D727
+  Ν=1D728
+  Ξ=1D729
+  Ο=1D72A
+  Π=1D72B
+  Ρ=1D72C
+  ϴ=1D72D

+  Σ=1D72E
+  Τ=1D72F
+  Υ=1D730
+  Φ=1D731
+  Χ=1D732
+  Ψ=1D733
+  Ω=1D734
+  ∇=1D735
+  α=1D736
+  β=1D737

+  γ=1D738
+  δ=1D739
+  ε=1D73A
+  ζ=1D73B
+  η=1D73C
+  θ=1D73D
+  ι=1D73E
+  κ=1D73F
+  λ=1D740
+  μ=1D741

+  ν=1D742
+  ξ=1D743
+  ο=1D744
+  π=1D745
+  ρ=1D746
+  ς=1D747
+  σ=1D748
+  τ=1D749
+  υ=1D74A
+  φ=1D74B

+  χ=1D74C
+  ψ=1D74D
+  ω=1D74E
+  ∂=1D74F
+  ϵ=1D750
+  ϑ=1D751
+  ϰ=1D752
+  ϕ=1D753
+  ϱ=1D754
+  ϖ=1D755

+
+
diff --git a/testing/web-platform/mozilla/tests/mathml/mathvariant/mathvariant-bold-ref.html b/testing/web-platform/mozilla/tests/mathml/mathvariant/mathvariant-bold-ref.html
new file mode 100644
index 0000000000..ac24ab5b00
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/mathml/mathvariant/mathvariant-bold-ref.html
@@ -0,0 +1,149 @@
+
+
+
+
+mathvariant bold (reference)
+
+
+  
+  
Test passes if all the equalities below are true.

+  𝐀=1D400
+  𝐁=1D401
+  𝐂=1D402
+  𝐃=1D403
+  𝐄=1D404
+  𝐅=1D405
+  𝐆=1D406
+  𝐇=1D407
+  𝐈=1D408
+  𝐉=1D409

+  𝐊=1D40A
+  𝐋=1D40B
+  𝐌=1D40C
+  𝐍=1D40D
+  𝐎=1D40E
+  𝐏=1D40F
+  𝐐=1D410
+  𝐑=1D411
+  𝐒=1D412
+  𝐓=1D413

+  𝐔=1D414
+  𝐕=1D415
+  𝐖=1D416
+  𝐗=1D417
+  𝐘=1D418
+  𝐙=1D419
+  𝐚=1D41A
+  𝐛=1D41B
+  𝐜=1D41C
+  𝐝=1D41D

+  𝐞=1D41E
+  𝐟=1D41F
+  𝐠=1D420
+  𝐡=1D421
+  𝐢=1D422
+  𝐣=1D423
+  𝐤=1D424
+  𝐥=1D425
+  𝐦=1D426
+  𝐧=1D427

+  𝐨=1D428
+  𝐩=1D429
+  𝐪=1D42A
+  𝐫=1D42B
+  𝐬=1D42C
+  𝐭=1D42D
+  𝐮=1D42E
+  𝐯=1D42F
+  𝐰=1D430
+  𝐱=1D431

+  𝐲=1D432
+  𝐳=1D433
+  𝚨=1D6A8
+  𝚩=1D6A9
+  𝚪=1D6AA
+  𝚫=1D6AB
+  𝚬=1D6AC
+  𝚭=1D6AD
+  𝚮=1D6AE
+  𝚯=1D6AF

+  𝚰=1D6B0
+  𝚱=1D6B1
+  𝚲=1D6B2
+  𝚳=1D6B3
+  𝚴=1D6B4
+  𝚵=1D6B5
+  𝚶=1D6B6
+  𝚷=1D6B7
+  𝚸=1D6B8
+  𝚹=1D6B9

+  𝚺=1D6BA
+  𝚻=1D6BB
+  𝚼=1D6BC
+  𝚽=1D6BD
+  𝚾=1D6BE
+  𝚿=1D6BF
+  𝛀=1D6C0
+  𝛁=1D6C1
+  𝛂=1D6C2
+  𝛃=1D6C3

+  𝛄=1D6C4
+  𝛅=1D6C5
+  𝛆=1D6C6
+  𝛇=1D6C7
+  𝛈=1D6C8
+  𝛉=1D6C9
+  𝛊=1D6CA
+  𝛋=1D6CB
+  𝛌=1D6CC
+  𝛍=1D6CD

+  𝛎=1D6CE
+  𝛏=1D6CF
+  𝛐=1D6D0
+  𝛑=1D6D1
+  𝛒=1D6D2
+  𝛓=1D6D3
+  𝛔=1D6D4
+  𝛕=1D6D5
+  𝛖=1D6D6
+  𝛗=1D6D7

+  𝛘=1D6D8
+  𝛙=1D6D9
+  𝛚=1D6DA
+  𝛛=1D6DB
+  𝛜=1D6DC
+  𝛝=1D6DD
+  𝛞=1D6DE
+  𝛟=1D6DF
+  𝛠=1D6E0
+  𝛡=1D6E1

+  𝟊=1D7CA
+  𝟋=1D7CB
+  𝟎=1D7CE
+  𝟏=1D7CF
+  𝟐=1D7D0
+  𝟑=1D7D1
+  𝟒=1D7D2
+  𝟓=1D7D3
+  𝟔=1D7D4
+  𝟕=1D7D5

+  𝟖=1D7D6
+  𝟗=1D7D7
+
+
diff --git a/testing/web-platform/mozilla/tests/mathml/mathvariant/mathvariant-bold-sans-serif-ref.html b/testing/web-platform/mozilla/tests/mathml/mathvariant/mathvariant-bold-sans-serif-ref.html
new file mode 100644
index 0000000000..78c0cc5ea6
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/mathml/mathvariant/mathvariant-bold-sans-serif-ref.html
@@ -0,0 +1,147 @@
+
+
+
+
+mathvariant bold-sans-serif (reference)
+
+
+  
+  
Test passes if all the equalities below are true.

+  𝗔=1D5D4
+  𝗕=1D5D5
+  𝗖=1D5D6
+  𝗗=1D5D7
+  𝗘=1D5D8
+  𝗙=1D5D9
+  𝗚=1D5DA
+  𝗛=1D5DB
+  𝗜=1D5DC
+  𝗝=1D5DD

+  𝗞=1D5DE
+  𝗟=1D5DF
+  𝗠=1D5E0
+  𝗡=1D5E1
+  𝗢=1D5E2
+  𝗣=1D5E3
+  𝗤=1D5E4
+  𝗥=1D5E5
+  𝗦=1D5E6
+  𝗧=1D5E7

+  𝗨=1D5E8
+  𝗩=1D5E9
+  𝗪=1D5EA
+  𝗫=1D5EB
+  𝗬=1D5EC
+  𝗭=1D5ED
+  𝗮=1D5EE
+  𝗯=1D5EF
+  𝗰=1D5F0
+  𝗱=1D5F1

+  𝗲=1D5F2
+  𝗳=1D5F3
+  𝗴=1D5F4
+  𝗵=1D5F5
+  𝗶=1D5F6
+  𝗷=1D5F7
+  𝗸=1D5F8
+  𝗹=1D5F9
+  𝗺=1D5FA
+  𝗻=1D5FB

+  𝗼=1D5FC
+  𝗽=1D5FD
+  𝗾=1D5FE
+  𝗿=1D5FF
+  𝘀=1D600
+  𝘁=1D601
+  𝘂=1D602
+  𝘃=1D603
+  𝘄=1D604
+  𝘅=1D605

+  𝘆=1D606
+  𝘇=1D607
+  𝝖=1D756
+  𝝗=1D757
+  𝝘=1D758
+  𝝙=1D759
+  𝝚=1D75A
+  𝝛=1D75B
+  𝝜=1D75C
+  𝝝=1D75D

+  𝝞=1D75E
+  𝝟=1D75F
+  𝝠=1D760
+  𝝡=1D761
+  𝝢=1D762
+  𝝣=1D763
+  𝝤=1D764
+  𝝥=1D765
+  𝝦=1D766
+  𝝧=1D767

+  𝝨=1D768
+  𝝩=1D769
+  𝝪=1D76A
+  𝝫=1D76B
+  𝝬=1D76C
+  𝝭=1D76D
+  𝝮=1D76E
+  𝝯=1D76F
+  𝝰=1D770
+  𝝱=1D771

+  𝝲=1D772
+  𝝳=1D773
+  𝝴=1D774
+  𝝵=1D775
+  𝝶=1D776
+  𝝷=1D777
+  𝝸=1D778
+  𝝹=1D779
+  𝝺=1D77A
+  𝝻=1D77B

+  𝝼=1D77C
+  𝝽=1D77D
+  𝝾=1D77E
+  𝝿=1D77F
+  𝞀=1D780
+  𝞁=1D781
+  𝞂=1D782
+  𝞃=1D783
+  𝞄=1D784
+  𝞅=1D785

+  𝞆=1D786
+  𝞇=1D787
+  𝞈=1D788
+  𝞉=1D789
+  𝞊=1D78A
+  𝞋=1D78B
+  𝞌=1D78C
+  𝞍=1D78D
+  𝞎=1D78E
+  𝞏=1D78F

+  𝟬=1D7EC
+  𝟭=1D7ED
+  𝟮=1D7EE
+  𝟯=1D7EF
+  𝟰=1D7F0
+  𝟱=1D7F1
+  𝟲=1D7F2
+  𝟳=1D7F3
+  𝟴=1D7F4
+  𝟵=1D7F5

+
+
diff --git a/testing/web-platform/mozilla/tests/mathml/mathvariant/mathvariant-bold-sans-serif.html b/testing/web-platform/mozilla/tests/mathml/mathvariant/mathvariant-bold-sans-serif.html
new file mode 100644
index 0000000000..0e0662dff6
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/mathml/mathvariant/mathvariant-bold-sans-serif.html
@@ -0,0 +1,153 @@
+
+
+
+
+mathvariant bold-sans-serif
+
+
+
+
+
+
+
+
+  
+  
Test passes if all the equalities below are true.

+  A=1D5D4
+  B=1D5D5
+  C=1D5D6
+  D=1D5D7
+  E=1D5D8
+  F=1D5D9
+  G=1D5DA
+  H=1D5DB
+  I=1D5DC
+  J=1D5DD

+  K=1D5DE
+  L=1D5DF
+  M=1D5E0
+  N=1D5E1
+  O=1D5E2
+  P=1D5E3
+  Q=1D5E4
+  R=1D5E5
+  S=1D5E6
+  T=1D5E7

+  U=1D5E8
+  V=1D5E9
+  W=1D5EA
+  X=1D5EB
+  Y=1D5EC
+  Z=1D5ED
+  a=1D5EE
+  b=1D5EF
+  c=1D5F0
+  d=1D5F1

+  e=1D5F2
+  f=1D5F3
+  g=1D5F4
+  h=1D5F5
+  i=1D5F6
+  j=1D5F7
+  k=1D5F8
+  l=1D5F9
+  m=1D5FA
+  n=1D5FB

+  o=1D5FC
+  p=1D5FD
+  q=1D5FE
+  r=1D5FF
+  s=1D600
+  t=1D601
+  u=1D602
+  v=1D603
+  w=1D604
+  x=1D605

+  y=1D606
+  z=1D607
+  Α=1D756
+  Β=1D757
+  Γ=1D758
+  Δ=1D759
+  Ε=1D75A
+  Ζ=1D75B
+  Η=1D75C
+  Θ=1D75D

+  Ι=1D75E
+  Κ=1D75F
+  Λ=1D760
+  Μ=1D761
+  Ν=1D762
+  Ξ=1D763
+  Ο=1D764
+  Π=1D765
+  Ρ=1D766
+  ϴ=1D767

+  Σ=1D768
+  Τ=1D769
+  Υ=1D76A
+  Φ=1D76B
+  Χ=1D76C
+  Ψ=1D76D
+  Ω=1D76E
+  ∇=1D76F
+  α=1D770
+  β=1D771

+  γ=1D772
+  δ=1D773
+  ε=1D774
+  ζ=1D775
+  η=1D776
+  θ=1D777
+  ι=1D778
+  κ=1D779
+  λ=1D77A
+  μ=1D77B

+  ν=1D77C
+  ξ=1D77D
+  ο=1D77E
+  π=1D77F
+  ρ=1D780
+  ς=1D781
+  σ=1D782
+  τ=1D783
+  υ=1D784
+  φ=1D785

+  χ=1D786
+  ψ=1D787
+  ω=1D788
+  ∂=1D789
+  ϵ=1D78A
+  ϑ=1D78B
+  ϰ=1D78C
+  ϕ=1D78D
+  ϱ=1D78E
+  ϖ=1D78F

+  0=1D7EC
+  1=1D7ED
+  2=1D7EE
+  3=1D7EF
+  4=1D7F0
+  5=1D7F1
+  6=1D7F2
+  7=1D7F3
+  8=1D7F4
+  9=1D7F5

+
+
diff --git a/testing/web-platform/mozilla/tests/mathml/mathvariant/mathvariant-bold-script-ref.html b/testing/web-platform/mozilla/tests/mathml/mathvariant/mathvariant-bold-script-ref.html
new file mode 100644
index 0000000000..ef11f7fb8f
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/mathml/mathvariant/mathvariant-bold-script-ref.html
@@ -0,0 +1,79 @@
+
+
+
+
+mathvariant bold-script (reference)
+
+
+  
+  
Test passes if all the equalities below are true.

+  𝓐=1D4D0
+  𝓑=1D4D1
+  𝓒=1D4D2
+  𝓓=1D4D3
+  𝓔=1D4D4
+  𝓕=1D4D5
+  𝓖=1D4D6
+  𝓗=1D4D7
+  𝓘=1D4D8
+  𝓙=1D4D9

+  𝓚=1D4DA
+  𝓛=1D4DB
+  𝓜=1D4DC
+  𝓝=1D4DD
+  𝓞=1D4DE
+  𝓟=1D4DF
+  𝓠=1D4E0
+  𝓡=1D4E1
+  𝓢=1D4E2
+  𝓣=1D4E3

+  𝓤=1D4E4
+  𝓥=1D4E5
+  𝓦=1D4E6
+  𝓧=1D4E7
+  𝓨=1D4E8
+  𝓩=1D4E9
+  𝓪=1D4EA
+  𝓫=1D4EB
+  𝓬=1D4EC
+  𝓭=1D4ED

+  𝓮=1D4EE
+  𝓯=1D4EF
+  𝓰=1D4F0
+  𝓱=1D4F1
+  𝓲=1D4F2
+  𝓳=1D4F3
+  𝓴=1D4F4
+  𝓵=1D4F5
+  𝓶=1D4F6
+  𝓷=1D4F7

+  𝓸=1D4F8
+  𝓹=1D4F9
+  𝓺=1D4FA
+  𝓻=1D4FB
+  𝓼=1D4FC
+  𝓽=1D4FD
+  𝓾=1D4FE
+  𝓿=1D4FF
+  𝔀=1D500
+  𝔁=1D501

+  𝔂=1D502
+  𝔃=1D503
+
+
diff --git a/testing/web-platform/mozilla/tests/mathml/mathvariant/mathvariant-bold-script.html b/testing/web-platform/mozilla/tests/mathml/mathvariant/mathvariant-bold-script.html
new file mode 100644
index 0000000000..0e775949f9
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/mathml/mathvariant/mathvariant-bold-script.html
@@ -0,0 +1,85 @@
+
+
+
+
+mathvariant bold-script
+
+
+
+
+
+
+
+
+  
+  
Test passes if all the equalities below are true.

+  A=1D4D0
+  B=1D4D1
+  C=1D4D2
+  D=1D4D3
+  E=1D4D4
+  F=1D4D5
+  G=1D4D6
+  H=1D4D7
+  I=1D4D8
+  J=1D4D9

+  K=1D4DA
+  L=1D4DB
+  M=1D4DC
+  N=1D4DD
+  O=1D4DE
+  P=1D4DF
+  Q=1D4E0
+  R=1D4E1
+  S=1D4E2
+  T=1D4E3

+  U=1D4E4
+  V=1D4E5
+  W=1D4E6
+  X=1D4E7
+  Y=1D4E8
+  Z=1D4E9
+  a=1D4EA
+  b=1D4EB
+  c=1D4EC
+  d=1D4ED

+  e=1D4EE
+  f=1D4EF
+  g=1D4F0
+  h=1D4F1
+  i=1D4F2
+  j=1D4F3
+  k=1D4F4
+  l=1D4F5
+  m=1D4F6
+  n=1D4F7

+  o=1D4F8
+  p=1D4F9
+  q=1D4FA
+  r=1D4FB
+  s=1D4FC
+  t=1D4FD
+  u=1D4FE
+  v=1D4FF
+  w=1D500
+  x=1D501

+  y=1D502
+  z=1D503
+
+
diff --git a/testing/web-platform/mozilla/tests/mathml/mathvariant/mathvariant-bold.html b/testing/web-platform/mozilla/tests/mathml/mathvariant/mathvariant-bold.html
new file mode 100644
index 0000000000..db5f4755be
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/mathml/mathvariant/mathvariant-bold.html
@@ -0,0 +1,155 @@
+
+
+
+
+mathvariant bold
+
+
+
+
+
+
+
+
+  
+  
Test passes if all the equalities below are true.

+  A=1D400
+  B=1D401
+  C=1D402
+  D=1D403
+  E=1D404
+  F=1D405
+  G=1D406
+  H=1D407
+  I=1D408
+  J=1D409

+  K=1D40A
+  L=1D40B
+  M=1D40C
+  N=1D40D
+  O=1D40E
+  P=1D40F
+  Q=1D410
+  R=1D411
+  S=1D412
+  T=1D413

+  U=1D414
+  V=1D415
+  W=1D416
+  X=1D417
+  Y=1D418
+  Z=1D419
+  a=1D41A
+  b=1D41B
+  c=1D41C
+  d=1D41D

+  e=1D41E
+  f=1D41F
+  g=1D420
+  h=1D421
+  i=1D422
+  j=1D423
+  k=1D424
+  l=1D425
+  m=1D426
+  n=1D427

+  o=1D428
+  p=1D429
+  q=1D42A
+  r=1D42B
+  s=1D42C
+  t=1D42D
+  u=1D42E
+  v=1D42F
+  w=1D430
+  x=1D431

+  y=1D432
+  z=1D433
+  Α=1D6A8
+  Β=1D6A9
+  Γ=1D6AA
+  Δ=1D6AB
+  Ε=1D6AC
+  Ζ=1D6AD
+  Η=1D6AE
+  Θ=1D6AF

+  Ι=1D6B0
+  Κ=1D6B1
+  Λ=1D6B2
+  Μ=1D6B3
+  Ν=1D6B4
+  Ξ=1D6B5
+  Ο=1D6B6
+  Π=1D6B7
+  Ρ=1D6B8
+  ϴ=1D6B9

+  Σ=1D6BA
+  Τ=1D6BB
+  Υ=1D6BC
+  Φ=1D6BD
+  Χ=1D6BE
+  Ψ=1D6BF
+  Ω=1D6C0
+  ∇=1D6C1
+  α=1D6C2
+  β=1D6C3

+  γ=1D6C4
+  δ=1D6C5
+  ε=1D6C6
+  ζ=1D6C7
+  η=1D6C8
+  θ=1D6C9
+  ι=1D6CA
+  κ=1D6CB
+  λ=1D6CC
+  μ=1D6CD

+  ν=1D6CE
+  ξ=1D6CF
+  ο=1D6D0
+  π=1D6D1
+  ρ=1D6D2
+  ς=1D6D3
+  σ=1D6D4
+  τ=1D6D5
+  υ=1D6D6
+  φ=1D6D7

+  χ=1D6D8
+  ψ=1D6D9
+  ω=1D6DA
+  ∂=1D6DB
+  ϵ=1D6DC
+  ϑ=1D6DD
+  ϰ=1D6DE
+  ϕ=1D6DF
+  ϱ=1D6E0
+  ϖ=1D6E1

+  Ϝ=1D7CA
+  ϝ=1D7CB
+  0=1D7CE
+  1=1D7CF
+  2=1D7D0
+  3=1D7D1
+  4=1D7D2
+  5=1D7D3
+  6=1D7D4
+  7=1D7D5

+  8=1D7D6
+  9=1D7D7
+
+
diff --git a/testing/web-platform/mozilla/tests/mathml/mathvariant/mathvariant-case-sensitivity-ref.html b/testing/web-platform/mozilla/tests/mathml/mathvariant/mathvariant-case-sensitivity-ref.html
new file mode 100644
index 0000000000..28d9acc1f4
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/mathml/mathvariant/mathvariant-case-sensitivity-ref.html
@@ -0,0 +1,163 @@
+
+
+
+
+mathvariant case sensitivity
+
+
+  

+    
+      𝕬
+    
+  

+  

+    
+      𝐀
+    
+  

+  

+    
+      𝑨
+    
+  

+  

+    
+      𝗔
+    
+  

+  

+    
+      𝓐
+    
+  

+  

+    
+      𝔸
+    
+  

+  

+    
+      𝔄
+    
+  

+  

+    
+      𞸰
+    
+  

+  

+    
+      𝐴
+    
+  

+  

+    
+      𞺐
+    
+  

+  

+    
+      𝙰
+    
+  

+  

+    
+      𝘼
+    
+  

+  

+    
+      𝖠
+    
+  

+  

+    
+      𝘈
+    
+  

+  

+    
+      𝒜
+    
+  

+  

+    
+      𞹰
+    
+  

+  

+    
+      𞹒
+    
+  

+
+
diff --git a/testing/web-platform/mozilla/tests/mathml/mathvariant/mathvariant-case-sensitivity.html b/testing/web-platform/mozilla/tests/mathml/mathvariant/mathvariant-case-sensitivity.html
new file mode 100644
index 0000000000..21c8300a7a
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/mathml/mathvariant/mathvariant-case-sensitivity.html
@@ -0,0 +1,168 @@
+
+
+
+
+mathvariant case sensitivity
+
+
+
+
+
+
+
+  

+    
+      A
+    
+  

+  

+    
+      A
+    
+  

+  

+    
+      A
+    
+  

+  

+    
+      A
+    
+  

+  

+    
+      A
+    
+  

+  

+    
+      A
+    
+  

+  

+    
+      A
+    
+  

+  

+    
+      ف
+    
+  

+  

+    
+      A
+    
+  

+  

+    
+      ف
+    
+  

+  

+    
+      A
+    
+  

+  

+    
+      A
+    
+  

+  

+    
+      A
+    
+  

+  

+    
+      A
+    
+  

+  

+    
+      A
+    
+  

+  

+    
+      ف
+    
+  

+  

+    
+      ق
+    
+  

+
+
diff --git a/testing/web-platform/mozilla/tests/mathml/mathvariant/mathvariant-double-struck-font-style-font-weight-ref.html b/testing/web-platform/mozilla/tests/mathml/mathvariant/mathvariant-double-struck-font-style-font-weight-ref.html
new file mode 100644
index 0000000000..817723a62d
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/mathml/mathvariant/mathvariant-double-struck-font-style-font-weight-ref.html
@@ -0,0 +1,25 @@
+
+
+  
+    
+    mathvariant="double-struck" and font-style/font-weight (reference)
+    
+  
+  
+    
Test passes if you see three lines with text 𞺡 respectively rendered with italic, bold and bold-italic style:

+    
𞺡

+    
𞺡

+    
𞺡

+  
+
diff --git a/testing/web-platform/mozilla/tests/mathml/mathvariant/mathvariant-double-struck-font-style-font-weight.html b/testing/web-platform/mozilla/tests/mathml/mathvariant/mathvariant-double-struck-font-style-font-weight.html
new file mode 100644
index 0000000000..2e283e1d70
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/mathml/mathvariant/mathvariant-double-struck-font-style-font-weight.html
@@ -0,0 +1,30 @@
+
+
+  
+    
+    mathvariant="double-struck" and font-style/font-weight
+    
+    
+    
+    
+    
+    
+  
+  
+    
Test passes if you see three lines with text 𞺡 respectively rendered with italic, bold and bold-italic style:

+    
ب

+    
ب

+    
ب

+  
+
diff --git a/testing/web-platform/mozilla/tests/mathml/mathvariant/mathvariant-double-struck-ref.html b/testing/web-platform/mozilla/tests/mathml/mathvariant/mathvariant-double-struck-ref.html
new file mode 100644
index 0000000000..ebdb7a15b0
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/mathml/mathvariant/mathvariant-double-struck-ref.html
@@ -0,0 +1,114 @@
+
+
+
+
+mathvariant double-struck (reference)
+
+
+  
+  
Test passes if all the equalities below are true.

+  𝔸=1D538
+  𝔹=1D539
+  ℂ=02102
+  𝔻=1D53B
+  𝔼=1D53C
+  𝔽=1D53D
+  𝔾=1D53E
+  ℍ=0210D
+  𝕀=1D540
+  𝕁=1D541

+  𝕂=1D542
+  𝕃=1D543
+  𝕄=1D544
+  ℕ=02115
+  𝕆=1D546
+  ℙ=02119
+  ℚ=0211A
+  ℝ=0211D
+  𝕊=1D54A
+  𝕋=1D54B

+  𝕌=1D54C
+  𝕍=1D54D
+  𝕎=1D54E
+  𝕏=1D54F
+  𝕐=1D550
+  ℤ=02124
+  𝕒=1D552
+  𝕓=1D553
+  𝕔=1D554
+  𝕕=1D555

+  𝕖=1D556
+  𝕗=1D557
+  𝕘=1D558
+  𝕙=1D559
+  𝕚=1D55A
+  𝕛=1D55B
+  𝕜=1D55C
+  𝕝=1D55D
+  𝕞=1D55E
+  𝕟=1D55F

+  𝕠=1D560
+  𝕡=1D561
+  𝕢=1D562
+  𝕣=1D563
+  𝕤=1D564
+  𝕥=1D565
+  𝕦=1D566
+  𝕧=1D567
+  𝕨=1D568
+  𝕩=1D569

+  𝕪=1D56A
+  𝕫=1D56B
+  𝟘=1D7D8
+  𝟙=1D7D9
+  𝟚=1D7DA
+  𝟛=1D7DB
+  𝟜=1D7DC
+  𝟝=1D7DD
+  𝟞=1D7DE
+  𝟟=1D7DF

+  𝟠=1D7E0
+  𝟡=1D7E1
+  𞺡=1EEA1
+  𞺢=1EEA2
+  𞺣=1EEA3
+  𞺥=1EEA5
+  𞺦=1EEA6
+  𞺧=1EEA7
+  𞺨=1EEA8
+  𞺩=1EEA9

+  𞺫=1EEAB
+  𞺬=1EEAC
+  𞺭=1EEAD
+  𞺮=1EEAE
+  𞺯=1EEAF
+  𞺰=1EEB0
+  𞺱=1EEB1
+  𞺲=1EEB2
+  𞺳=1EEB3
+  𞺴=1EEB4

+  𞺵=1EEB5
+  𞺶=1EEB6
+  𞺷=1EEB7
+  𞺸=1EEB8
+  𞺹=1EEB9
+  𞺺=1EEBA
+  𞺻=1EEBB
+
+
diff --git a/testing/web-platform/mozilla/tests/mathml/mathvariant/mathvariant-double-struck.html b/testing/web-platform/mozilla/tests/mathml/mathvariant/mathvariant-double-struck.html
new file mode 100644
index 0000000000..335234ac38
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/mathml/mathvariant/mathvariant-double-struck.html
@@ -0,0 +1,120 @@
+
+
+
+
+mathvariant double-struck
+
+
+
+
+
+
+
+
+  
+  
Test passes if all the equalities below are true.

+  A=1D538
+  B=1D539
+  C=02102
+  D=1D53B
+  E=1D53C
+  F=1D53D
+  G=1D53E
+  H=0210D
+  I=1D540
+  J=1D541

+  K=1D542
+  L=1D543
+  M=1D544
+  N=02115
+  O=1D546
+  P=02119
+  Q=0211A
+  R=0211D
+  S=1D54A
+  T=1D54B

+  U=1D54C
+  V=1D54D
+  W=1D54E
+  X=1D54F
+  Y=1D550
+  Z=02124
+  a=1D552
+  b=1D553
+  c=1D554
+  d=1D555

+  e=1D556
+  f=1D557
+  g=1D558
+  h=1D559
+  i=1D55A
+  j=1D55B
+  k=1D55C
+  l=1D55D
+  m=1D55E
+  n=1D55F

+  o=1D560
+  p=1D561
+  q=1D562
+  r=1D563
+  s=1D564
+  t=1D565
+  u=1D566
+  v=1D567
+  w=1D568
+  x=1D569

+  y=1D56A
+  z=1D56B
+  0=1D7D8
+  1=1D7D9
+  2=1D7DA
+  3=1D7DB
+  4=1D7DC
+  5=1D7DD
+  6=1D7DE
+  7=1D7DF

+  8=1D7E0
+  9=1D7E1
+  ب=1EEA1
+  ج=1EEA2
+  د=1EEA3
+  و=1EEA5
+  ز=1EEA6
+  ح=1EEA7
+  ط=1EEA8
+  ي=1EEA9

+  ل=1EEAB
+  م=1EEAC
+  ن=1EEAD
+  س=1EEAE
+  ع=1EEAF
+  ف=1EEB0
+  ص=1EEB1
+  ق=1EEB2
+  ر=1EEB3
+  ش=1EEB4

+  ت=1EEB5
+  ث=1EEB6
+  خ=1EEB7
+  ذ=1EEB8
+  ض=1EEB9
+  ظ=1EEBA
+  غ=1EEBB
+
+
diff --git a/testing/web-platform/mozilla/tests/mathml/mathvariant/mathvariant-fraktur-ref.html b/testing/web-platform/mozilla/tests/mathml/mathvariant/mathvariant-fraktur-ref.html
new file mode 100644
index 0000000000..3d1dd50a7d
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/mathml/mathvariant/mathvariant-fraktur-ref.html
@@ -0,0 +1,79 @@
+
+
+
+
+mathvariant fraktur (reference)
+
+
+  
+  
Test passes if all the equalities below are true.

+  𝔄=1D504
+  𝔅=1D505
+  ℭ=0212D
+  𝔇=1D507
+  𝔈=1D508
+  𝔉=1D509
+  𝔊=1D50A
+  ℌ=0210C
+  ℑ=02111
+  𝔍=1D50D

+  𝔎=1D50E
+  𝔏=1D50F
+  𝔐=1D510
+  𝔑=1D511
+  𝔒=1D512
+  𝔓=1D513
+  𝔔=1D514
+  ℜ=0211C
+  𝔖=1D516
+  𝔗=1D517

+  𝔘=1D518
+  𝔙=1D519
+  𝔚=1D51A
+  𝔛=1D51B
+  𝔜=1D51C
+  ℨ=02128
+  𝔞=1D51E
+  𝔟=1D51F
+  𝔠=1D520
+  𝔡=1D521

+  𝔢=1D522
+  𝔣=1D523
+  𝔤=1D524
+  𝔥=1D525
+  𝔦=1D526
+  𝔧=1D527
+  𝔨=1D528
+  𝔩=1D529
+  𝔪=1D52A
+  𝔫=1D52B

+  𝔬=1D52C
+  𝔭=1D52D
+  𝔮=1D52E
+  𝔯=1D52F
+  𝔰=1D530
+  𝔱=1D531
+  𝔲=1D532
+  𝔳=1D533
+  𝔴=1D534
+  𝔵=1D535

+  𝔶=1D536
+  𝔷=1D537
+
+
diff --git a/testing/web-platform/mozilla/tests/mathml/mathvariant/mathvariant-fraktur.html b/testing/web-platform/mozilla/tests/mathml/mathvariant/mathvariant-fraktur.html
new file mode 100644
index 0000000000..9c95cd06e7
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/mathml/mathvariant/mathvariant-fraktur.html
@@ -0,0 +1,85 @@
+
+
+
+
+mathvariant fraktur
+
+
+
+
+
+
+
+
+  
+  
Test passes if all the equalities below are true.

+  A=1D504
+  B=1D505
+  C=0212D
+  D=1D507
+  E=1D508
+  F=1D509
+  G=1D50A
+  H=0210C
+  I=02111
+  J=1D50D

+  K=1D50E
+  L=1D50F
+  M=1D510
+  N=1D511
+  O=1D512
+  P=1D513
+  Q=1D514
+  R=0211C
+  S=1D516
+  T=1D517

+  U=1D518
+  V=1D519
+  W=1D51A
+  X=1D51B
+  Y=1D51C
+  Z=02128
+  a=1D51E
+  b=1D51F
+  c=1D520
+  d=1D521

+  e=1D522
+  f=1D523
+  g=1D524
+  h=1D525
+  i=1D526
+  j=1D527
+  k=1D528
+  l=1D529
+  m=1D52A
+  n=1D52B

+  o=1D52C
+  p=1D52D
+  q=1D52E
+  r=1D52F
+  s=1D530
+  t=1D531
+  u=1D532
+  v=1D533
+  w=1D534
+  x=1D535

+  y=1D536
+  z=1D537
+
+
diff --git a/testing/web-platform/mozilla/tests/mathml/mathvariant/mathvariant-initial-ref.html b/testing/web-platform/mozilla/tests/mathml/mathvariant/mathvariant-initial-ref.html
new file mode 100644
index 0000000000..5d5b72a1c5
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/mathml/mathvariant/mathvariant-initial-ref.html
@@ -0,0 +1,47 @@
+
+
+
+
+mathvariant initial (reference)
+
+
+  
+  
Test passes if all the equalities below are true.

+  𞸡=1EE21
+  𞸢=1EE22
+  𞸤=1EE24
+  𞸧=1EE27
+  𞸩=1EE29
+  𞸪=1EE2A
+  𞸫=1EE2B
+  𞸬=1EE2C
+  𞸭=1EE2D
+  𞸮=1EE2E

+  𞸯=1EE2F
+  𞸰=1EE30
+  𞸱=1EE31
+  𞸲=1EE32
+  𞸴=1EE34
+  𞸵=1EE35
+  𞸶=1EE36
+  𞸷=1EE37
+  𞸹=1EE39
+  𞸻=1EE3B

+
+
diff --git a/testing/web-platform/mozilla/tests/mathml/mathvariant/mathvariant-initial.html b/testing/web-platform/mozilla/tests/mathml/mathvariant/mathvariant-initial.html
new file mode 100644
index 0000000000..3b0263a197
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/mathml/mathvariant/mathvariant-initial.html
@@ -0,0 +1,53 @@
+
+
+
+
+mathvariant initial
+
+
+
+
+
+
+
+
+  
+  
Test passes if all the equalities below are true.

+  ب=1EE21
+  ج=1EE22
+  ه=1EE24
+  ح=1EE27
+  ي=1EE29
+  ك=1EE2A
+  ل=1EE2B
+  م=1EE2C
+  ن=1EE2D
+  س=1EE2E

+  ع=1EE2F
+  ف=1EE30
+  ص=1EE31
+  ق=1EE32
+  ش=1EE34
+  ت=1EE35
+  ث=1EE36
+  خ=1EE37
+  ض=1EE39
+  غ=1EE3B

+
+
diff --git a/testing/web-platform/mozilla/tests/mathml/mathvariant/mathvariant-italic-ref.html b/testing/web-platform/mozilla/tests/mathml/mathvariant/mathvariant-italic-ref.html
new file mode 100644
index 0000000000..e2078c2948
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/mathml/mathvariant/mathvariant-italic-ref.html
@@ -0,0 +1,139 @@
+
+
+
+
+mathvariant italic (reference)
+
+
+  
+  
Test passes if all the equalities below are true.

+  𝐴=1D434
+  𝐵=1D435
+  𝐶=1D436
+  𝐷=1D437
+  𝐸=1D438
+  𝐹=1D439
+  𝐺=1D43A
+  𝐻=1D43B
+  𝐼=1D43C
+  𝐽=1D43D

+  𝐾=1D43E
+  𝐿=1D43F
+  𝑀=1D440
+  𝑁=1D441
+  𝑂=1D442
+  𝑃=1D443
+  𝑄=1D444
+  𝑅=1D445
+  𝑆=1D446
+  𝑇=1D447

+  𝑈=1D448
+  𝑉=1D449
+  𝑊=1D44A
+  𝑋=1D44B
+  𝑌=1D44C
+  𝑍=1D44D
+  𝑎=1D44E
+  𝑏=1D44F
+  𝑐=1D450
+  𝑑=1D451

+  𝑒=1D452
+  𝑓=1D453
+  𝑔=1D454
+  ℎ=0210E
+  𝑖=1D456
+  𝑗=1D457
+  𝑘=1D458
+  𝑙=1D459
+  𝑚=1D45A
+  𝑛=1D45B

+  𝑜=1D45C
+  𝑝=1D45D
+  𝑞=1D45E
+  𝑟=1D45F
+  𝑠=1D460
+  𝑡=1D461
+  𝑢=1D462
+  𝑣=1D463
+  𝑤=1D464
+  𝑥=1D465

+  𝑦=1D466
+  𝑧=1D467
+  𝚤=1D6A4
+  𝚥=1D6A5
+  𝛢=1D6E2
+  𝛣=1D6E3
+  𝛤=1D6E4
+  𝛥=1D6E5
+  𝛦=1D6E6
+  𝛧=1D6E7

+  𝛨=1D6E8
+  𝛩=1D6E9
+  𝛪=1D6EA
+  𝛫=1D6EB
+  𝛬=1D6EC
+  𝛭=1D6ED
+  𝛮=1D6EE
+  𝛯=1D6EF
+  𝛰=1D6F0
+  𝛱=1D6F1

+  𝛲=1D6F2
+  𝛳=1D6F3
+  𝛴=1D6F4
+  𝛵=1D6F5
+  𝛶=1D6F6
+  𝛷=1D6F7
+  𝛸=1D6F8
+  𝛹=1D6F9
+  𝛺=1D6FA
+  𝛻=1D6FB

+  𝛼=1D6FC
+  𝛽=1D6FD
+  𝛾=1D6FE
+  𝛿=1D6FF
+  𝜀=1D700
+  𝜁=1D701
+  𝜂=1D702
+  𝜃=1D703
+  𝜄=1D704
+  𝜅=1D705

+  𝜆=1D706
+  𝜇=1D707
+  𝜈=1D708
+  𝜉=1D709
+  𝜊=1D70A
+  𝜋=1D70B
+  𝜌=1D70C
+  𝜍=1D70D
+  𝜎=1D70E
+  𝜏=1D70F

+  𝜐=1D710
+  𝜑=1D711
+  𝜒=1D712
+  𝜓=1D713
+  𝜔=1D714
+  𝜕=1D715
+  𝜖=1D716
+  𝜗=1D717
+  𝜘=1D718
+  𝜙=1D719

+  𝜚=1D71A
+  𝜛=1D71B
+
+
diff --git a/testing/web-platform/mozilla/tests/mathml/mathvariant/mathvariant-italic.html b/testing/web-platform/mozilla/tests/mathml/mathvariant/mathvariant-italic.html
new file mode 100644
index 0000000000..1e6aa6512d
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/mathml/mathvariant/mathvariant-italic.html
@@ -0,0 +1,145 @@
+
+
+
+
+mathvariant italic
+
+
+
+
+
+
+
+
+  
+  
Test passes if all the equalities below are true.

+  A=1D434
+  B=1D435
+  C=1D436
+  D=1D437
+  E=1D438
+  F=1D439
+  G=1D43A
+  H=1D43B
+  I=1D43C
+  J=1D43D

+  K=1D43E
+  L=1D43F
+  M=1D440
+  N=1D441
+  O=1D442
+  P=1D443
+  Q=1D444
+  R=1D445
+  S=1D446
+  T=1D447

+  U=1D448
+  V=1D449
+  W=1D44A
+  X=1D44B
+  Y=1D44C
+  Z=1D44D
+  a=1D44E
+  b=1D44F
+  c=1D450
+  d=1D451

+  e=1D452
+  f=1D453
+  g=1D454
+  h=0210E
+  i=1D456
+  j=1D457
+  k=1D458
+  l=1D459
+  m=1D45A
+  n=1D45B

+  o=1D45C
+  p=1D45D
+  q=1D45E
+  r=1D45F
+  s=1D460
+  t=1D461
+  u=1D462
+  v=1D463
+  w=1D464
+  x=1D465

+  y=1D466
+  z=1D467
+  ı=1D6A4
+  ȷ=1D6A5
+  Α=1D6E2
+  Β=1D6E3
+  Γ=1D6E4
+  Δ=1D6E5
+  Ε=1D6E6
+  Ζ=1D6E7

+  Η=1D6E8
+  Θ=1D6E9
+  Ι=1D6EA
+  Κ=1D6EB
+  Λ=1D6EC
+  Μ=1D6ED
+  Ν=1D6EE
+  Ξ=1D6EF
+  Ο=1D6F0
+  Π=1D6F1

+  Ρ=1D6F2
+  ϴ=1D6F3
+  Σ=1D6F4
+  Τ=1D6F5
+  Υ=1D6F6
+  Φ=1D6F7
+  Χ=1D6F8
+  Ψ=1D6F9
+  Ω=1D6FA
+  ∇=1D6FB

+  α=1D6FC
+  β=1D6FD
+  γ=1D6FE
+  δ=1D6FF
+  ε=1D700
+  ζ=1D701
+  η=1D702
+  θ=1D703
+  ι=1D704
+  κ=1D705

+  λ=1D706
+  μ=1D707
+  ν=1D708
+  ξ=1D709
+  ο=1D70A
+  π=1D70B
+  ρ=1D70C
+  ς=1D70D
+  σ=1D70E
+  τ=1D70F

+  υ=1D710
+  φ=1D711
+  χ=1D712
+  ψ=1D713
+  ω=1D714
+  ∂=1D715
+  ϵ=1D716
+  ϑ=1D717
+  ϰ=1D718
+  ϕ=1D719

+  ϱ=1D71A
+  ϖ=1D71B
+
+
diff --git a/testing/web-platform/mozilla/tests/mathml/mathvariant/mathvariant-looped-ref.html b/testing/web-platform/mozilla/tests/mathml/mathvariant/mathvariant-looped-ref.html
new file mode 100644
index 0000000000..f00e5d87bb
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/mathml/mathvariant/mathvariant-looped-ref.html
@@ -0,0 +1,54 @@
+
+
+
+
+mathvariant looped (reference)
+
+
+  
+  
Test passes if all the equalities below are true.

+  𞺀=1EE80
+  𞺁=1EE81
+  𞺂=1EE82
+  𞺃=1EE83
+  𞺄=1EE84
+  𞺅=1EE85
+  𞺆=1EE86
+  𞺇=1EE87
+  𞺈=1EE88
+  𞺉=1EE89

+  𞺋=1EE8B
+  𞺌=1EE8C
+  𞺍=1EE8D
+  𞺎=1EE8E
+  𞺏=1EE8F
+  𞺐=1EE90
+  𞺑=1EE91
+  𞺒=1EE92
+  𞺓=1EE93
+  𞺔=1EE94

+  𞺕=1EE95
+  𞺖=1EE96
+  𞺗=1EE97
+  𞺘=1EE98
+  𞺙=1EE99
+  𞺚=1EE9A
+  𞺛=1EE9B
+
+
diff --git a/testing/web-platform/mozilla/tests/mathml/mathvariant/mathvariant-looped.html b/testing/web-platform/mozilla/tests/mathml/mathvariant/mathvariant-looped.html
new file mode 100644
index 0000000000..b208849368
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/mathml/mathvariant/mathvariant-looped.html
@@ -0,0 +1,60 @@
+
+
+
+
+mathvariant looped
+
+
+
+
+
+
+
+
+  
+  
Test passes if all the equalities below are true.

+  ا=1EE80
+  ب=1EE81
+  ج=1EE82
+  د=1EE83
+  ه=1EE84
+  و=1EE85
+  ز=1EE86
+  ح=1EE87
+  ط=1EE88
+  ي=1EE89

+  ل=1EE8B
+  م=1EE8C
+  ن=1EE8D
+  س=1EE8E
+  ع=1EE8F
+  ف=1EE90
+  ص=1EE91
+  ق=1EE92
+  ر=1EE93
+  ش=1EE94

+  ت=1EE95
+  ث=1EE96
+  خ=1EE97
+  ذ=1EE98
+  ض=1EE99
+  ظ=1EE9A
+  غ=1EE9B
+
+
diff --git a/testing/web-platform/mozilla/tests/mathml/mathvariant/mathvariant-monospace-ref.html b/testing/web-platform/mozilla/tests/mathml/mathvariant/mathvariant-monospace-ref.html
new file mode 100644
index 0000000000..1d4a0c0a52
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/mathml/mathvariant/mathvariant-monospace-ref.html
@@ -0,0 +1,89 @@
+
+
+
+
+mathvariant monospace (reference)
+
+
+  
+  
Test passes if all the equalities below are true.

+  𝙰=1D670
+  𝙱=1D671
+  𝙲=1D672
+  𝙳=1D673
+  𝙴=1D674
+  𝙵=1D675
+  𝙶=1D676
+  𝙷=1D677
+  𝙸=1D678
+  𝙹=1D679

+  𝙺=1D67A
+  𝙻=1D67B
+  𝙼=1D67C
+  𝙽=1D67D
+  𝙾=1D67E
+  𝙿=1D67F
+  𝚀=1D680
+  𝚁=1D681
+  𝚂=1D682
+  𝚃=1D683

+  𝚄=1D684
+  𝚅=1D685
+  𝚆=1D686
+  𝚇=1D687
+  𝚈=1D688
+  𝚉=1D689
+  𝚊=1D68A
+  𝚋=1D68B
+  𝚌=1D68C
+  𝚍=1D68D

+  𝚎=1D68E
+  𝚏=1D68F
+  𝚐=1D690
+  𝚑=1D691
+  𝚒=1D692
+  𝚓=1D693
+  𝚔=1D694
+  𝚕=1D695
+  𝚖=1D696
+  𝚗=1D697

+  𝚘=1D698
+  𝚙=1D699
+  𝚚=1D69A
+  𝚛=1D69B
+  𝚜=1D69C
+  𝚝=1D69D
+  𝚞=1D69E
+  𝚟=1D69F
+  𝚠=1D6A0
+  𝚡=1D6A1

+  𝚢=1D6A2
+  𝚣=1D6A3
+  𝟶=1D7F6
+  𝟷=1D7F7
+  𝟸=1D7F8
+  𝟹=1D7F9
+  𝟺=1D7FA
+  𝟻=1D7FB
+  𝟼=1D7FC
+  𝟽=1D7FD

+  𝟾=1D7FE
+  𝟿=1D7FF
+
+
diff --git a/testing/web-platform/mozilla/tests/mathml/mathvariant/mathvariant-monospace.html b/testing/web-platform/mozilla/tests/mathml/mathvariant/mathvariant-monospace.html
new file mode 100644
index 0000000000..ad5541fe0e
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/mathml/mathvariant/mathvariant-monospace.html
@@ -0,0 +1,95 @@
+
+
+
+
+mathvariant monospace
+
+
+
+
+
+
+
+
+  
+  
Test passes if all the equalities below are true.

+  A=1D670
+  B=1D671
+  C=1D672
+  D=1D673
+  E=1D674
+  F=1D675
+  G=1D676
+  H=1D677
+  I=1D678
+  J=1D679

+  K=1D67A
+  L=1D67B
+  M=1D67C
+  N=1D67D
+  O=1D67E
+  P=1D67F
+  Q=1D680
+  R=1D681
+  S=1D682
+  T=1D683

+  U=1D684
+  V=1D685
+  W=1D686
+  X=1D687
+  Y=1D688
+  Z=1D689
+  a=1D68A
+  b=1D68B
+  c=1D68C
+  d=1D68D

+  e=1D68E
+  f=1D68F
+  g=1D690
+  h=1D691
+  i=1D692
+  j=1D693
+  k=1D694
+  l=1D695
+  m=1D696
+  n=1D697

+  o=1D698
+  p=1D699
+  q=1D69A
+  r=1D69B
+  s=1D69C
+  t=1D69D
+  u=1D69E
+  v=1D69F
+  w=1D6A0
+  x=1D6A1

+  y=1D6A2
+  z=1D6A3
+  0=1D7F6
+  1=1D7F7
+  2=1D7F8
+  3=1D7F9
+  4=1D7FA
+  5=1D7FB
+  6=1D7FC
+  7=1D7FD

+  8=1D7FE
+  9=1D7FF
+
+
diff --git a/testing/web-platform/mozilla/tests/mathml/mathvariant/mathvariant-sans-serif-bold-italic-ref.html b/testing/web-platform/mozilla/tests/mathml/mathvariant/mathvariant-sans-serif-bold-italic-ref.html
new file mode 100644
index 0000000000..f918db9b48
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/mathml/mathvariant/mathvariant-sans-serif-bold-italic-ref.html
@@ -0,0 +1,137 @@
+
+
+
+
+mathvariant sans-serif-bold-italic (reference)
+
+
+  
+  
Test passes if all the equalities below are true.

+  𝘼=1D63C
+  𝘽=1D63D
+  𝘾=1D63E
+  𝘿=1D63F
+  𝙀=1D640
+  𝙁=1D641
+  𝙂=1D642
+  𝙃=1D643
+  𝙄=1D644
+  𝙅=1D645

+  𝙆=1D646
+  𝙇=1D647
+  𝙈=1D648
+  𝙉=1D649
+  𝙊=1D64A
+  𝙋=1D64B
+  𝙌=1D64C
+  𝙍=1D64D
+  𝙎=1D64E
+  𝙏=1D64F

+  𝙐=1D650
+  𝙑=1D651
+  𝙒=1D652
+  𝙓=1D653
+  𝙔=1D654
+  𝙕=1D655
+  𝙖=1D656
+  𝙗=1D657
+  𝙘=1D658
+  𝙙=1D659

+  𝙚=1D65A
+  𝙛=1D65B
+  𝙜=1D65C
+  𝙝=1D65D
+  𝙞=1D65E
+  𝙟=1D65F
+  𝙠=1D660
+  𝙡=1D661
+  𝙢=1D662
+  𝙣=1D663

+  𝙤=1D664
+  𝙥=1D665
+  𝙦=1D666
+  𝙧=1D667
+  𝙨=1D668
+  𝙩=1D669
+  𝙪=1D66A
+  𝙫=1D66B
+  𝙬=1D66C
+  𝙭=1D66D

+  𝙮=1D66E
+  𝙯=1D66F
+  𝞐=1D790
+  𝞑=1D791
+  𝞒=1D792
+  𝞓=1D793
+  𝞔=1D794
+  𝞕=1D795
+  𝞖=1D796
+  𝞗=1D797

+  𝞘=1D798
+  𝞙=1D799
+  𝞚=1D79A
+  𝞛=1D79B
+  𝞜=1D79C
+  𝞝=1D79D
+  𝞞=1D79E
+  𝞟=1D79F
+  𝞠=1D7A0
+  𝞡=1D7A1

+  𝞢=1D7A2
+  𝞣=1D7A3
+  𝞤=1D7A4
+  𝞥=1D7A5
+  𝞦=1D7A6
+  𝞧=1D7A7
+  𝞨=1D7A8
+  𝞩=1D7A9
+  𝞪=1D7AA
+  𝞫=1D7AB

+  𝞬=1D7AC
+  𝞭=1D7AD
+  𝞮=1D7AE
+  𝞯=1D7AF
+  𝞰=1D7B0
+  𝞱=1D7B1
+  𝞲=1D7B2
+  𝞳=1D7B3
+  𝞴=1D7B4
+  𝞵=1D7B5

+  𝞶=1D7B6
+  𝞷=1D7B7
+  𝞸=1D7B8
+  𝞹=1D7B9
+  𝞺=1D7BA
+  𝞻=1D7BB
+  𝞼=1D7BC
+  𝞽=1D7BD
+  𝞾=1D7BE
+  𝞿=1D7BF

+  𝟀=1D7C0
+  𝟁=1D7C1
+  𝟂=1D7C2
+  𝟃=1D7C3
+  𝟄=1D7C4
+  𝟅=1D7C5
+  𝟆=1D7C6
+  𝟇=1D7C7
+  𝟈=1D7C8
+  𝟉=1D7C9

+
+
diff --git a/testing/web-platform/mozilla/tests/mathml/mathvariant/mathvariant-sans-serif-bold-italic.html b/testing/web-platform/mozilla/tests/mathml/mathvariant/mathvariant-sans-serif-bold-italic.html
new file mode 100644
index 0000000000..d51afe4345
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/mathml/mathvariant/mathvariant-sans-serif-bold-italic.html
@@ -0,0 +1,143 @@
+
+
+
+
+mathvariant sans-serif-bold-italic
+
+
+
+
+
+
+
+
+  
+  
Test passes if all the equalities below are true.

+  A=1D63C
+  B=1D63D
+  C=1D63E
+  D=1D63F
+  E=1D640
+  F=1D641
+  G=1D642
+  H=1D643
+  I=1D644
+  J=1D645

+  K=1D646
+  L=1D647
+  M=1D648
+  N=1D649
+  O=1D64A
+  P=1D64B
+  Q=1D64C
+  R=1D64D
+  S=1D64E
+  T=1D64F

+  U=1D650
+  V=1D651
+  W=1D652
+  X=1D653
+  Y=1D654
+  Z=1D655
+  a=1D656
+  b=1D657
+  c=1D658
+  d=1D659

+  e=1D65A
+  f=1D65B
+  g=1D65C
+  h=1D65D
+  i=1D65E
+  j=1D65F
+  k=1D660
+  l=1D661
+  m=1D662
+  n=1D663

+  o=1D664
+  p=1D665
+  q=1D666
+  r=1D667
+  s=1D668
+  t=1D669
+  u=1D66A
+  v=1D66B
+  w=1D66C
+  x=1D66D

+  y=1D66E
+  z=1D66F
+  Α=1D790
+  Β=1D791
+  Γ=1D792
+  Δ=1D793
+  Ε=1D794
+  Ζ=1D795
+  Η=1D796
+  Θ=1D797

+  Ι=1D798
+  Κ=1D799
+  Λ=1D79A
+  Μ=1D79B
+  Ν=1D79C
+  Ξ=1D79D
+  Ο=1D79E
+  Π=1D79F
+  Ρ=1D7A0
+  ϴ=1D7A1

+  Σ=1D7A2
+  Τ=1D7A3
+  Υ=1D7A4
+  Φ=1D7A5
+  Χ=1D7A6
+  Ψ=1D7A7
+  Ω=1D7A8
+  ∇=1D7A9
+  α=1D7AA
+  β=1D7AB

+  γ=1D7AC
+  δ=1D7AD
+  ε=1D7AE
+  ζ=1D7AF
+  η=1D7B0
+  θ=1D7B1
+  ι=1D7B2
+  κ=1D7B3
+  λ=1D7B4
+  μ=1D7B5

+  ν=1D7B6
+  ξ=1D7B7
+  ο=1D7B8
+  π=1D7B9
+  ρ=1D7BA
+  ς=1D7BB
+  σ=1D7BC
+  τ=1D7BD
+  υ=1D7BE
+  φ=1D7BF

+  χ=1D7C0
+  ψ=1D7C1
+  ω=1D7C2
+  ∂=1D7C3
+  ϵ=1D7C4
+  ϑ=1D7C5
+  ϰ=1D7C6
+  ϕ=1D7C7
+  ϱ=1D7C8
+  ϖ=1D7C9

+
+
diff --git a/testing/web-platform/mozilla/tests/mathml/mathvariant/mathvariant-sans-serif-italic-ref.html b/testing/web-platform/mozilla/tests/mathml/mathvariant/mathvariant-sans-serif-italic-ref.html
new file mode 100644
index 0000000000..d7e23248c6
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/mathml/mathvariant/mathvariant-sans-serif-italic-ref.html
@@ -0,0 +1,79 @@
+
+
+
+
+mathvariant sans-serif-italic (reference)
+
+
+  
+  
Test passes if all the equalities below are true.

+  𝘈=1D608
+  𝘉=1D609
+  𝘊=1D60A
+  𝘋=1D60B
+  𝘌=1D60C
+  𝘍=1D60D
+  𝘎=1D60E
+  𝘏=1D60F
+  𝘐=1D610
+  𝘑=1D611

+  𝘒=1D612
+  𝘓=1D613
+  𝘔=1D614
+  𝘕=1D615
+  𝘖=1D616
+  𝘗=1D617
+  𝘘=1D618
+  𝘙=1D619
+  𝘚=1D61A
+  𝘛=1D61B

+  𝘜=1D61C
+  𝘝=1D61D
+  𝘞=1D61E
+  𝘟=1D61F
+  𝘠=1D620
+  𝘡=1D621
+  𝘢=1D622
+  𝘣=1D623
+  𝘤=1D624
+  𝘥=1D625

+  𝘦=1D626
+  𝘧=1D627
+  𝘨=1D628
+  𝘩=1D629
+  𝘪=1D62A
+  𝘫=1D62B
+  𝘬=1D62C
+  𝘭=1D62D
+  𝘮=1D62E
+  𝘯=1D62F

+  𝘰=1D630
+  𝘱=1D631
+  𝘲=1D632
+  𝘳=1D633
+  𝘴=1D634
+  𝘵=1D635
+  𝘶=1D636
+  𝘷=1D637
+  𝘸=1D638
+  𝘹=1D639

+  𝘺=1D63A
+  𝘻=1D63B
+
+
diff --git a/testing/web-platform/mozilla/tests/mathml/mathvariant/mathvariant-sans-serif-italic.html b/testing/web-platform/mozilla/tests/mathml/mathvariant/mathvariant-sans-serif-italic.html
new file mode 100644
index 0000000000..e847ca9bb8
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/mathml/mathvariant/mathvariant-sans-serif-italic.html
@@ -0,0 +1,85 @@
+
+
+
+
+mathvariant sans-serif-italic
+
+
+
+
+
+
+
+
+  
+  
Test passes if all the equalities below are true.

+  A=1D608
+  B=1D609
+  C=1D60A
+  D=1D60B
+  E=1D60C
+  F=1D60D
+  G=1D60E
+  H=1D60F
+  I=1D610
+  J=1D611

+  K=1D612
+  L=1D613
+  M=1D614
+  N=1D615
+  O=1D616
+  P=1D617
+  Q=1D618
+  R=1D619
+  S=1D61A
+  T=1D61B

+  U=1D61C
+  V=1D61D
+  W=1D61E
+  X=1D61F
+  Y=1D620
+  Z=1D621
+  a=1D622
+  b=1D623
+  c=1D624
+  d=1D625

+  e=1D626
+  f=1D627
+  g=1D628
+  h=1D629
+  i=1D62A
+  j=1D62B
+  k=1D62C
+  l=1D62D
+  m=1D62E
+  n=1D62F

+  o=1D630
+  p=1D631
+  q=1D632
+  r=1D633
+  s=1D634
+  t=1D635
+  u=1D636
+  v=1D637
+  w=1D638
+  x=1D639

+  y=1D63A
+  z=1D63B
+
+
diff --git a/testing/web-platform/mozilla/tests/mathml/mathvariant/mathvariant-sans-serif-ref.html b/testing/web-platform/mozilla/tests/mathml/mathvariant/mathvariant-sans-serif-ref.html
new file mode 100644
index 0000000000..ced5272ecb
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/mathml/mathvariant/mathvariant-sans-serif-ref.html
@@ -0,0 +1,89 @@
+
+
+
+
+mathvariant sans-serif (reference)
+
+
+  
+  
Test passes if all the equalities below are true.

+  𝖠=1D5A0
+  𝖡=1D5A1
+  𝖢=1D5A2
+  𝖣=1D5A3
+  𝖤=1D5A4
+  𝖥=1D5A5
+  𝖦=1D5A6
+  𝖧=1D5A7
+  𝖨=1D5A8
+  𝖩=1D5A9

+  𝖪=1D5AA
+  𝖫=1D5AB
+  𝖬=1D5AC
+  𝖭=1D5AD
+  𝖮=1D5AE
+  𝖯=1D5AF
+  𝖰=1D5B0
+  𝖱=1D5B1
+  𝖲=1D5B2
+  𝖳=1D5B3

+  𝖴=1D5B4
+  𝖵=1D5B5
+  𝖶=1D5B6
+  𝖷=1D5B7
+  𝖸=1D5B8
+  𝖹=1D5B9
+  𝖺=1D5BA
+  𝖻=1D5BB
+  𝖼=1D5BC
+  𝖽=1D5BD

+  𝖾=1D5BE
+  𝖿=1D5BF
+  𝗀=1D5C0
+  𝗁=1D5C1
+  𝗂=1D5C2
+  𝗃=1D5C3
+  𝗄=1D5C4
+  𝗅=1D5C5
+  𝗆=1D5C6
+  𝗇=1D5C7

+  𝗈=1D5C8
+  𝗉=1D5C9
+  𝗊=1D5CA
+  𝗋=1D5CB
+  𝗌=1D5CC
+  𝗍=1D5CD
+  𝗎=1D5CE
+  𝗏=1D5CF
+  𝗐=1D5D0
+  𝗑=1D5D1

+  𝗒=1D5D2
+  𝗓=1D5D3
+  𝟢=1D7E2
+  𝟣=1D7E3
+  𝟤=1D7E4
+  𝟥=1D7E5
+  𝟦=1D7E6
+  𝟧=1D7E7
+  𝟨=1D7E8
+  𝟩=1D7E9

+  𝟪=1D7EA
+  𝟫=1D7EB
+
+
diff --git a/testing/web-platform/mozilla/tests/mathml/mathvariant/mathvariant-sans-serif.html b/testing/web-platform/mozilla/tests/mathml/mathvariant/mathvariant-sans-serif.html
new file mode 100644
index 0000000000..43a1fa821f
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/mathml/mathvariant/mathvariant-sans-serif.html
@@ -0,0 +1,95 @@
+
+
+
+
+mathvariant sans-serif
+
+
+
+
+
+
+
+
+  
+  
Test passes if all the equalities below are true.

+  A=1D5A0
+  B=1D5A1
+  C=1D5A2
+  D=1D5A3
+  E=1D5A4
+  F=1D5A5
+  G=1D5A6
+  H=1D5A7
+  I=1D5A8
+  J=1D5A9

+  K=1D5AA
+  L=1D5AB
+  M=1D5AC
+  N=1D5AD
+  O=1D5AE
+  P=1D5AF
+  Q=1D5B0
+  R=1D5B1
+  S=1D5B2
+  T=1D5B3

+  U=1D5B4
+  V=1D5B5
+  W=1D5B6
+  X=1D5B7
+  Y=1D5B8
+  Z=1D5B9
+  a=1D5BA
+  b=1D5BB
+  c=1D5BC
+  d=1D5BD

+  e=1D5BE
+  f=1D5BF
+  g=1D5C0
+  h=1D5C1
+  i=1D5C2
+  j=1D5C3
+  k=1D5C4
+  l=1D5C5
+  m=1D5C6
+  n=1D5C7

+  o=1D5C8
+  p=1D5C9
+  q=1D5CA
+  r=1D5CB
+  s=1D5CC
+  t=1D5CD
+  u=1D5CE
+  v=1D5CF
+  w=1D5D0
+  x=1D5D1

+  y=1D5D2
+  z=1D5D3
+  0=1D7E2
+  1=1D7E3
+  2=1D7E4
+  3=1D7E5
+  4=1D7E6
+  5=1D7E7
+  6=1D7E8
+  7=1D7E9

+  8=1D7EA
+  9=1D7EB
+
+
diff --git a/testing/web-platform/mozilla/tests/mathml/mathvariant/mathvariant-script-ref.html b/testing/web-platform/mozilla/tests/mathml/mathvariant/mathvariant-script-ref.html
new file mode 100644
index 0000000000..60ced85bc3
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/mathml/mathvariant/mathvariant-script-ref.html
@@ -0,0 +1,79 @@
+
+
+
+
+mathvariant script (reference)
+
+
+  
+  
Test passes if all the equalities below are true.

+  𝒜=1D49C
+  ℬ=0212C
+  𝒞=1D49E
+  𝒟=1D49F
+  ℰ=02130
+  ℱ=02131
+  𝒢=1D4A2
+  ℋ=0210B
+  ℐ=02110
+  𝒥=1D4A5

+  𝒦=1D4A6
+  ℒ=02112
+  ℳ=02133
+  𝒩=1D4A9
+  𝒪=1D4AA
+  𝒫=1D4AB
+  𝒬=1D4AC
+  ℛ=0211B
+  𝒮=1D4AE
+  𝒯=1D4AF

+  𝒰=1D4B0
+  𝒱=1D4B1
+  𝒲=1D4B2
+  𝒳=1D4B3
+  𝒴=1D4B4
+  𝒵=1D4B5
+  𝒶=1D4B6
+  𝒷=1D4B7
+  𝒸=1D4B8
+  𝒹=1D4B9

+  ℯ=0212F
+  𝒻=1D4BB
+  ℊ=0210A
+  𝒽=1D4BD
+  𝒾=1D4BE
+  𝒿=1D4BF
+  𝓀=1D4C0
+  𝓁=1D4C1
+  𝓂=1D4C2
+  𝓃=1D4C3

+  ℴ=02134
+  𝓅=1D4C5
+  𝓆=1D4C6
+  𝓇=1D4C7
+  𝓈=1D4C8
+  𝓉=1D4C9
+  𝓊=1D4CA
+  𝓋=1D4CB
+  𝓌=1D4CC
+  𝓍=1D4CD

+  𝓎=1D4CE
+  𝓏=1D4CF
+
+
diff --git a/testing/web-platform/mozilla/tests/mathml/mathvariant/mathvariant-script.html b/testing/web-platform/mozilla/tests/mathml/mathvariant/mathvariant-script.html
new file mode 100644
index 0000000000..afbdfd9f94
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/mathml/mathvariant/mathvariant-script.html
@@ -0,0 +1,85 @@
+
+
+
+
+mathvariant script
+
+
+
+
+
+
+
+
+  
+  
Test passes if all the equalities below are true.

+  A=1D49C
+  B=0212C
+  C=1D49E
+  D=1D49F
+  E=02130
+  F=02131
+  G=1D4A2
+  H=0210B
+  I=02110
+  J=1D4A5

+  K=1D4A6
+  L=02112
+  M=02133
+  N=1D4A9
+  O=1D4AA
+  P=1D4AB
+  Q=1D4AC
+  R=0211B
+  S=1D4AE
+  T=1D4AF

+  U=1D4B0
+  V=1D4B1
+  W=1D4B2
+  X=1D4B3
+  Y=1D4B4
+  Z=1D4B5
+  a=1D4B6
+  b=1D4B7
+  c=1D4B8
+  d=1D4B9

+  e=0212F
+  f=1D4BB
+  g=0210A
+  h=1D4BD
+  i=1D4BE
+  j=1D4BF
+  k=1D4C0
+  l=1D4C1
+  m=1D4C2
+  n=1D4C3

+  o=02134
+  p=1D4C5
+  q=1D4C6
+  r=1D4C7
+  s=1D4C8
+  t=1D4C9
+  u=1D4CA
+  v=1D4CB
+  w=1D4CC
+  x=1D4CD

+  y=1D4CE
+  z=1D4CF
+
+
diff --git a/testing/web-platform/mozilla/tests/mathml/mathvariant/mathvariant-stretched-ref.html b/testing/web-platform/mozilla/tests/mathml/mathvariant/mathvariant-stretched-ref.html
new file mode 100644
index 0000000000..454f2004ac
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/mathml/mathvariant/mathvariant-stretched-ref.html
@@ -0,0 +1,50 @@
+
+
+
+
+mathvariant stretched (reference)
+
+
+  
+  
Test passes if all the equalities below are true.

+  𞹡=1EE61
+  𞹢=1EE62
+  𞹤=1EE64
+  𞹧=1EE67
+  𞹨=1EE68
+  𞹩=1EE69
+  𞹪=1EE6A
+  𞹬=1EE6C
+  𞹭=1EE6D
+  𞹮=1EE6E

+  𞹯=1EE6F
+  𞹰=1EE70
+  𞹱=1EE71
+  𞹲=1EE72
+  𞹴=1EE74
+  𞹵=1EE75
+  𞹶=1EE76
+  𞹷=1EE77
+  𞹹=1EE79
+  𞹺=1EE7A

+  𞹻=1EE7B
+  𞹼=1EE7C
+  𞹾=1EE7E
+
+
diff --git a/testing/web-platform/mozilla/tests/mathml/mathvariant/mathvariant-stretched.html b/testing/web-platform/mozilla/tests/mathml/mathvariant/mathvariant-stretched.html
new file mode 100644
index 0000000000..99b06fb41b
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/mathml/mathvariant/mathvariant-stretched.html
@@ -0,0 +1,56 @@
+
+
+
+
+mathvariant stretched
+
+
+
+
+
+
+
+
+  
+  
Test passes if all the equalities below are true.

+  ب=1EE61
+  ج=1EE62
+  ه=1EE64
+  ح=1EE67
+  ط=1EE68
+  ي=1EE69
+  ك=1EE6A
+  م=1EE6C
+  ن=1EE6D
+  س=1EE6E

+  ع=1EE6F
+  ف=1EE70
+  ص=1EE71
+  ق=1EE72
+  ش=1EE74
+  ت=1EE75
+  ث=1EE76
+  خ=1EE77
+  ض=1EE79
+  ظ=1EE7A

+  غ=1EE7B
+  ٮ=1EE7C
+  ڡ=1EE7E
+
+
diff --git a/testing/web-platform/mozilla/tests/mathml/mathvariant/mathvariant-tailed-ref.html b/testing/web-platform/mozilla/tests/mathml/mathvariant/mathvariant-tailed-ref.html
new file mode 100644
index 0000000000..5e1461cd33
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/mathml/mathvariant/mathvariant-tailed-ref.html
@@ -0,0 +1,42 @@
+
+
+
+
+mathvariant tailed (reference)
+
+
+  
+  
Test passes if all the equalities below are true.

+  𞹂=1EE42
+  𞹇=1EE47
+  𞹉=1EE49
+  𞹋=1EE4B
+  𞹍=1EE4D
+  𞹎=1EE4E
+  𞹏=1EE4F
+  𞹑=1EE51
+  𞹒=1EE52
+  𞹔=1EE54

+  𞹗=1EE57
+  𞹙=1EE59
+  𞹛=1EE5B
+  𞹝=1EE5D
+  𞹟=1EE5F
+
+
diff --git a/testing/web-platform/mozilla/tests/mathml/mathvariant/mathvariant-tailed.html b/testing/web-platform/mozilla/tests/mathml/mathvariant/mathvariant-tailed.html
new file mode 100644
index 0000000000..43fbca5e80
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/mathml/mathvariant/mathvariant-tailed.html
@@ -0,0 +1,48 @@
+
+
+
+
+mathvariant tailed
+
+
+
+
+
+
+
+
+  
+  
Test passes if all the equalities below are true.

+  ج=1EE42
+  ح=1EE47
+  ي=1EE49
+  ل=1EE4B
+  ن=1EE4D
+  س=1EE4E
+  ع=1EE4F
+  ص=1EE51
+  ق=1EE52
+  ش=1EE54

+  خ=1EE57
+  ض=1EE59
+  غ=1EE5B
+  ں=1EE5D
+  ٯ=1EE5F
+
+
diff --git a/testing/web-platform/mozilla/tests/media/2x2-green.ogv b/testing/web-platform/mozilla/tests/media/2x2-green.ogv
new file mode 100644
index 0000000000..29903c0a81
Binary files /dev/null and b/testing/web-platform/mozilla/tests/media/2x2-green.ogv differ
diff --git a/testing/web-platform/mozilla/tests/mediacapture-streams/MediaDevices-enumerateDevices.https.html b/testing/web-platform/mozilla/tests/mediacapture-streams/MediaDevices-enumerateDevices.https.html
new file mode 100644
index 0000000000..e7dcd4e531
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/mediacapture-streams/MediaDevices-enumerateDevices.https.html
@@ -0,0 +1,110 @@
+
+
+
+enumerateDevices: test that enumerateDevices is present (legacy Firefox)
+
+
+
+
Description

+
This is a modified copy of
+testing/web-platform/tests/mediacapture-streams/MediaDevices-enumerateDevices.https.html
+testing legacy Firefox version of the navigator.mediaDevices.enumerateDevices() method.

+

+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/mozilla/tests/mediacapture-streams/enumerateDevices-in-background.https.html b/testing/web-platform/mozilla/tests/mediacapture-streams/enumerateDevices-in-background.https.html
new file mode 100644
index 0000000000..55d1d24dce
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/mediacapture-streams/enumerateDevices-in-background.https.html
@@ -0,0 +1,67 @@
+
+enumerateDevices() in background tab with focus in chrome
+
+
+
+
+
+
diff --git a/testing/web-platform/mozilla/tests/mediacapture-streams/enumerateDevices-without-focus.https.html b/testing/web-platform/mozilla/tests/mediacapture-streams/enumerateDevices-without-focus.https.html
new file mode 100644
index 0000000000..6516a514c5
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/mediacapture-streams/enumerateDevices-without-focus.https.html
@@ -0,0 +1,58 @@
+
+enumerateDevices() without focus
+
+
+
+
+
+
diff --git a/testing/web-platform/mozilla/tests/mediacapture-streams/permission-helper.js b/testing/web-platform/mozilla/tests/mediacapture-streams/permission-helper.js
new file mode 100644
index 0000000000..0a237f7d43
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/mediacapture-streams/permission-helper.js
@@ -0,0 +1,24 @@
+// Set permissions for camera and microphone using Web Driver
+// Status can be one of "granted" or "denied"
+// Scope take values from permission names
+async function setMediaPermission(status="granted", scope=["camera", "microphone"]) {
+  try {
+    for (let s of scope) {
+      await test_driver.set_permission({ name: s }, status);
+    }
+  } catch (e) {
+    const noSetPermissionSupport = typeof e === "string" && e.match(/set_permission not implemented/);
+    if (!(noSetPermissionSupport ||
+          (e instanceof Error && e.message.match("unimplemented")) )) {
+      throw e;
+    }
+    // Web Driver not implemented action
+    // FF: https://bugzilla.mozilla.org/show_bug.cgi?id=1524074
+
+    // with current WPT runners, will default to granted state for FF and Safari
+    // throw if status!="granted" to invalidate test results
+    if (status === "denied") {
+      assert_implements_optional(!noSetPermissionSupport, "Unable to set permission to denied for this test");
+    }
+  }
+}
diff --git a/testing/web-platform/mozilla/tests/placeholder b/testing/web-platform/mozilla/tests/placeholder
new file mode 100644
index 0000000000..92dd3d5151
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/placeholder
@@ -0,0 +1,6 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+This is a placeholder file to ensure that this directory remains
+in source control and test packages even when it is otherwise empty.
\ No newline at end of file
diff --git a/testing/web-platform/mozilla/tests/screen-capture/getdisplaymedia-user-activation-consumed.https.html b/testing/web-platform/mozilla/tests/screen-capture/getdisplaymedia-user-activation-consumed.https.html
new file mode 100644
index 0000000000..d0623fbaa5
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/screen-capture/getdisplaymedia-user-activation-consumed.https.html
@@ -0,0 +1,30 @@
+
+
+Test getDisplayMedia() after user activation is consumed
+
+
+
+
+
+
+
diff --git a/testing/web-platform/mozilla/tests/selection/Selection-addRange-same-instance.html b/testing/web-platform/mozilla/tests/selection/Selection-addRange-same-instance.html
new file mode 100644
index 0000000000..c374b8ecdf
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/selection/Selection-addRange-same-instance.html
@@ -0,0 +1,56 @@
+
+
+
+
+
+
+
+
+

+
diff --git a/testing/web-platform/mozilla/tests/service-workers/bug1675097.https.html b/testing/web-platform/mozilla/tests/service-workers/bug1675097.https.html
new file mode 100644
index 0000000000..e093f616c1
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/service-workers/bug1675097.https.html
@@ -0,0 +1,34 @@
+
+Controlled iframe with initial about:blank becomes sandboxed
+
+
+
+
+
+
diff --git a/testing/web-platform/mozilla/tests/service-workers/no_intercept_for_crossorigin_media.https.html b/testing/web-platform/mozilla/tests/service-workers/no_intercept_for_crossorigin_media.https.html
new file mode 100644
index 0000000000..245522f5fc
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/service-workers/no_intercept_for_crossorigin_media.https.html
@@ -0,0 +1,42 @@
+
+
+Don't intercept cross-origin media requests
+
+
+
+
+
+
diff --git a/testing/web-platform/mozilla/tests/service-workers/resources/blank.html b/testing/web-platform/mozilla/tests/service-workers/resources/blank.html
new file mode 100644
index 0000000000..a3c3a4689a
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/service-workers/resources/blank.html
@@ -0,0 +1,2 @@
+
+Empty doc
diff --git a/testing/web-platform/mozilla/tests/service-workers/resources/bug1675097-iframe.html b/testing/web-platform/mozilla/tests/service-workers/resources/bug1675097-iframe.html
new file mode 100644
index 0000000000..5ad7b95594
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/service-workers/resources/bug1675097-iframe.html
@@ -0,0 +1,15 @@
+
+
+
+
+
diff --git a/testing/web-platform/mozilla/tests/service-workers/resources/bug1675097-sw.js b/testing/web-platform/mozilla/tests/service-workers/resources/bug1675097-sw.js
new file mode 100644
index 0000000000..e2894e1032
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/service-workers/resources/bug1675097-sw.js
@@ -0,0 +1,26 @@
+// We use promises because the message and fetch events do not have a guaranteed
+// order, since they come from different task sources.
+var resolvePortPromise;
+var portPromise = new Promise(resolve => resolvePortPromise = resolve);
+var resolveResolveResponsePromise;
+var resolveResponsePromise = new Promise(resolve => resolveResolveResponsePromise = resolve);
+
+self.addEventListener('fetch', event => {
+    if (event.request.url.indexOf('inner') !== -1) {
+        event.respondWith(new Promise(resolve => {
+            resolveResolveResponsePromise(resolve);
+        }));
+        portPromise.then(port => port.postMessage('intercepted'));
+    }
+});
+
+self.addEventListener('message', event => {
+    if (event.data.type === 'register') {
+        resolvePortPromise(event.data.port);
+    }
+    else if (event.data.type === 'ack') {
+        self.clients.matchAll()
+            .then(() => resolveResponsePromise)
+            .then(resolveResponse => resolveResponse(new Response('inner iframe')));
+    }
+});
diff --git a/testing/web-platform/mozilla/tests/service-workers/resources/crossorigin_media_iframe.html b/testing/web-platform/mozilla/tests/service-workers/resources/crossorigin_media_iframe.html
new file mode 100644
index 0000000000..54cdcaa8dd
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/service-workers/resources/crossorigin_media_iframe.html
@@ -0,0 +1,24 @@
+
+
+
+
diff --git a/testing/web-platform/mozilla/tests/service-workers/resources/crossorigin_media_iframe_nonrange.html b/testing/web-platform/mozilla/tests/service-workers/resources/crossorigin_media_iframe_nonrange.html
new file mode 100644
index 0000000000..8e3c20fdeb
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/service-workers/resources/crossorigin_media_iframe_nonrange.html
@@ -0,0 +1,22 @@
+
+
+
+
diff --git a/testing/web-platform/mozilla/tests/service-workers/resources/empty.js b/testing/web-platform/mozilla/tests/service-workers/resources/empty.js
new file mode 100644
index 0000000000..e69de29bb2
diff --git a/testing/web-platform/mozilla/tests/service-workers/resources/fetch_video.py b/testing/web-platform/mozilla/tests/service-workers/resources/fetch_video.py
new file mode 100644
index 0000000000..541f00c019
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/service-workers/resources/fetch_video.py
@@ -0,0 +1,14 @@
+import os
+
+
+def main(request, response):
+    filename = os.path.join(request.doc_root, u"media", u"2x2-green.ogv")
+    body = open(filename, "rb").read()
+    length = len(body)
+    headers = [
+        (b"Content-Type", b"video/ogg"),
+        (b"Accept-Ranges", b"bytes"),
+        (b"Content-Length", b"%d" % length),
+        (b"Content-Range", b"bytes 0-%d/%d" % (length - 1, length)),
+    ]
+    return headers, body
diff --git a/testing/web-platform/mozilla/tests/service-workers/resources/green.png b/testing/web-platform/mozilla/tests/service-workers/resources/green.png
new file mode 100644
index 0000000000..28a1faab37
Binary files /dev/null and b/testing/web-platform/mozilla/tests/service-workers/resources/green.png differ
diff --git a/testing/web-platform/mozilla/tests/service-workers/resources/intercept_media_sw.js b/testing/web-platform/mozilla/tests/service-workers/resources/intercept_media_sw.js
new file mode 100644
index 0000000000..6c373aa0de
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/service-workers/resources/intercept_media_sw.js
@@ -0,0 +1,14 @@
+'use strict';
+
+self.addEventListener('fetch', event => {
+  if (event.request.url.indexOf('fetch_video.py') !== -1) {
+    // A no-cors media range request /should not/ be intercepted.
+    // Respond with some text to cause an error.
+    event.respondWith(new Response('intercepted'));
+  }
+  else if (event.request.url.indexOf('blank.html') !== -1) {
+    // A no-cors media non-range request /should/ be intercepted.
+    // Respond with an image to avoid an error.
+    event.respondWith(fetch('green.png'));
+  }
+});
diff --git a/testing/web-platform/mozilla/tests/service-workers/update_completes_in_disconnected_global.https.html b/testing/web-platform/mozilla/tests/service-workers/update_completes_in_disconnected_global.https.html
new file mode 100644
index 0000000000..371fa81161
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/service-workers/update_completes_in_disconnected_global.https.html
@@ -0,0 +1,63 @@
+
+Service Worker: Disconnected Global Update()
+
+
+
+
diff --git a/testing/web-platform/mozilla/tests/svg/smil-sampling.html b/testing/web-platform/mozilla/tests/svg/smil-sampling.html
new file mode 100644
index 0000000000..8eecb63595
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/svg/smil-sampling.html
@@ -0,0 +1,44 @@
+
+
+
+
+
+  
+    
+  
+
+
diff --git a/testing/web-platform/mozilla/tests/web-animations/web-animations-print-ref.html b/testing/web-platform/mozilla/tests/web-animations/web-animations-print-ref.html
new file mode 100644
index 0000000000..539d072d16
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/web-animations/web-animations-print-ref.html
@@ -0,0 +1,4 @@
+
+
+Web animation
+
blue with animation support; olive without

diff --git a/testing/web-platform/mozilla/tests/web-animations/web-animations-print.html b/testing/web-platform/mozilla/tests/web-animations/web-animations-print.html
new file mode 100644
index 0000000000..2b1ed19eb6
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/web-animations/web-animations-print.html
@@ -0,0 +1,20 @@
+
+
+
+
+Web animation
+
blue with animation support; olive without

+
diff --git a/testing/web-platform/mozilla/tests/webdriver/bidi/__init__.py b/testing/web-platform/mozilla/tests/webdriver/bidi/__init__.py
new file mode 100644
index 0000000000..e69de29bb2
diff --git a/testing/web-platform/mozilla/tests/webdriver/bidi/browsing_context/__init__.py b/testing/web-platform/mozilla/tests/webdriver/bidi/browsing_context/__init__.py
new file mode 100644
index 0000000000..e69de29bb2
diff --git a/testing/web-platform/mozilla/tests/webdriver/bidi/browsing_context/create/__init__.py b/testing/web-platform/mozilla/tests/webdriver/bidi/browsing_context/create/__init__.py
new file mode 100644
index 0000000000..910b202075
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/webdriver/bidi/browsing_context/create/__init__.py
@@ -0,0 +1,20 @@
+import contextlib
+
+
+def set_context(session, context):
+    session.send_session_command("POST", "moz/context", {"context": context})
+
+
+@contextlib.contextmanager
+def using_context(session, context):
+    orig_context = session.send_session_command("GET", "moz/context")
+    needs_change = context != orig_context
+
+    if needs_change:
+        set_context(session, context)
+
+    try:
+        yield
+    finally:
+        if needs_change:
+            set_context(session, orig_context)
diff --git a/testing/web-platform/mozilla/tests/webdriver/bidi/browsing_context/create/reference_context.py b/testing/web-platform/mozilla/tests/webdriver/bidi/browsing_context/create/reference_context.py
new file mode 100644
index 0000000000..1a5906339b
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/webdriver/bidi/browsing_context/create/reference_context.py
@@ -0,0 +1,72 @@
+import pytest
+
+from . import using_context
+
+pytestmark = pytest.mark.asyncio
+
+
+# Helper to assert the order of top level browsing contexts.
+# The window used for the assertion is inferred from the first context id of
+# expected_context_ids.
+def assert_tab_order(session, expected_context_ids):
+    with using_context(session, "chrome"):
+        context_ids = session.execute_script(
+            """
+            const contextId = arguments[0];
+            const { TabManager } =
+                ChromeUtils.importESModule("chrome://remote/content/shared/TabManager.sys.mjs");
+            const browsingContext = TabManager.getBrowsingContextById(contextId);
+            const chromeWindow = browsingContext.embedderElement.ownerGlobal;
+            const tabBrowser = TabManager.getTabBrowser(chromeWindow);
+            return tabBrowser.browsers.map(browser => TabManager.getIdForBrowser(browser));
+            """,
+            args=(expected_context_ids[0],),
+        )
+
+        assert context_ids == expected_context_ids
+
+
+async def test_reference_context(bidi_session, current_session):
+    # Create a new window with a tab tab1
+    result = await bidi_session.browsing_context.create(type_hint="window")
+    tab1_context_id = result["context"]
+
+    # Create a second window with a tab tab2
+    result = await bidi_session.browsing_context.create(type_hint="window")
+    tab2_context_id = result["context"]
+
+    # Create a new tab tab3 next to tab1
+    result = await bidi_session.browsing_context.create(
+        type_hint="tab", reference_context=tab1_context_id
+    )
+    tab3_context_id = result["context"]
+
+    # Create a new tab tab4 next to tab2
+    result = await bidi_session.browsing_context.create(
+        type_hint="tab", reference_context=tab2_context_id
+    )
+    tab4_context_id = result["context"]
+
+    # Create a new tab tab5 also next to tab2 (should consequently be between
+    # tab2 and tab4)
+    result = await bidi_session.browsing_context.create(
+        type_hint="tab", reference_context=tab2_context_id
+    )
+    tab5_context_id = result["context"]
+
+    # Create a new window, but pass a reference_context from an existing window.
+    # The reference context is expected to be ignored here.
+    result = await bidi_session.browsing_context.create(
+        type_hint="window", reference_context=tab2_context_id
+    )
+    tab6_context_id = result["context"]
+
+    # We expect 3 windows in total, with a specific tab order:
+    # - the first window should contain tab1, tab3
+    assert_tab_order(current_session, [tab1_context_id, tab3_context_id])
+    # - the second window should contain tab2, tab5, tab4
+    assert_tab_order(
+        current_session, [tab2_context_id, tab5_context_id, tab4_context_id]
+    )
+    # - the third window should contain tab6
+    assert_tab_order(current_session, [tab6_context_id])
diff --git a/testing/web-platform/mozilla/tests/webdriver/bidi/browsing_context/create/type_hint.py b/testing/web-platform/mozilla/tests/webdriver/bidi/browsing_context/create/type_hint.py
new file mode 100644
index 0000000000..337a03b3dd
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/webdriver/bidi/browsing_context/create/type_hint.py
@@ -0,0 +1,31 @@
+import pytest
+from tests.support.asserts import assert_success
+
+from . import using_context
+
+pytestmark = pytest.mark.asyncio
+
+
+def count_window_handles(session):
+    with using_context(session, "chrome"):
+        response = session.transport.send(
+            "GET", "session/{session_id}/window/handles".format(**vars(session))
+        )
+        chrome_handles = assert_success(response)
+        return len(chrome_handles)
+
+
+@pytest.mark.parametrize("type_hint", ["tab", "window"])
+async def test_type_hint(bidi_session, current_session, type_hint):
+    assert len(await bidi_session.browsing_context.get_tree()) == 1
+    assert count_window_handles(current_session) == 1
+
+    await bidi_session.browsing_context.create(type_hint=type_hint)
+
+    if type_hint == "window":
+        expected_window_count = 2
+    else:
+        expected_window_count = 1
+
+    assert len(await bidi_session.browsing_context.get_tree()) == 2
+    assert count_window_handles(current_session) == expected_window_count
diff --git a/testing/web-platform/mozilla/tests/webdriver/bidi/browsing_context/navigate/__init__.py b/testing/web-platform/mozilla/tests/webdriver/bidi/browsing_context/navigate/__init__.py
new file mode 100644
index 0000000000..e69de29bb2
diff --git a/testing/web-platform/mozilla/tests/webdriver/bidi/browsing_context/navigate/error.py b/testing/web-platform/mozilla/tests/webdriver/bidi/browsing_context/navigate/error.py
new file mode 100644
index 0000000000..374359d1ae
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/webdriver/bidi/browsing_context/navigate/error.py
@@ -0,0 +1,48 @@
+import os
+from copy import deepcopy
+
+import pytest
+from tests.bidi.browsing_context.navigate import navigate_and_assert
+
+pytestmark = pytest.mark.asyncio
+
+
+async def test_insecure_certificate(configuration, url, custom_profile, geckodriver):
+    try:
+        # Create a new profile and remove the certificate storage so that
+        # loading a HTTPS page will cause an insecure certificate error
+        os.remove(os.path.join(custom_profile.profile, "cert9.db"))
+    except Exception:
+        pass
+
+    config = deepcopy(configuration)
+    config["capabilities"]["moz:firefoxOptions"]["args"] = [
+        "--profile",
+        custom_profile.profile,
+    ]
+    # Capability matching not implemented yet for WebDriver BiDi (bug 1713784)
+    config["capabilities"]["acceptInsecureCerts"] = False
+    config["capabilities"]["webSocketUrl"] = True
+
+    driver = geckodriver(config=config)
+    driver.new_session()
+
+    bidi_session = driver.session.bidi_session
+    await bidi_session.start()
+
+    contexts = await bidi_session.browsing_context.get_tree(max_depth=0)
+    await navigate_and_assert(
+        bidi_session,
+        contexts[0],
+        url("/common/blank.html", protocol="https"),
+        expected_error=True,
+    )
+
+
+async def test_invalid_content_encoding(bidi_session, new_tab, inline):
+    await navigate_and_assert(
+        bidi_session,
+        new_tab,
+        f"{inline('
foo')}&pipe=header(Content-Encoding,gzip)",
+        expected_error=True,
+    )
diff --git a/testing/web-platform/mozilla/tests/webdriver/bidi/errors/__init__.py b/testing/web-platform/mozilla/tests/webdriver/bidi/errors/__init__.py
new file mode 100644
index 0000000000..e69de29bb2
diff --git a/testing/web-platform/mozilla/tests/webdriver/bidi/errors/errors.py b/testing/web-platform/mozilla/tests/webdriver/bidi/errors/errors.py
new file mode 100644
index 0000000000..69b1f2fb7a
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/webdriver/bidi/errors/errors.py
@@ -0,0 +1,8 @@
+import pytest
+from webdriver.bidi.error import UnknownCommandException
+
+
+@pytest.mark.asyncio
+async def test_internal_method(bidi_session, send_blocking_command):
+    with pytest.raises(UnknownCommandException):
+        await send_blocking_command("log._applySessionData", {})
diff --git a/testing/web-platform/mozilla/tests/webdriver/bidi/interface/__init__.py b/testing/web-platform/mozilla/tests/webdriver/bidi/interface/__init__.py
new file mode 100644
index 0000000000..e69de29bb2
diff --git a/testing/web-platform/mozilla/tests/webdriver/bidi/interface/interface.py b/testing/web-platform/mozilla/tests/webdriver/bidi/interface/interface.py
new file mode 100644
index 0000000000..561b80d120
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/webdriver/bidi/interface/interface.py
@@ -0,0 +1,26 @@
+import pytest
+from webdriver.bidi.client import BidiSession
+from webdriver.bidi.modules.script import ContextTarget
+
+pytestmark = pytest.mark.asyncio
+
+
+async def test_navigator_webdriver_enabled(inline, browser):
+    # Request a new browser with only WebDriver BiDi and not Marionette/CDP enabled.
+    current_browser = browser(use_bidi=True, extra_prefs={"remote.active-protocols": 1})
+    server_host = current_browser.remote_agent_host
+    server_port = current_browser.remote_agent_port
+
+    async with BidiSession.bidi_only(
+        f"ws://{server_host}:{server_port}"
+    ) as bidi_session:
+        contexts = await bidi_session.browsing_context.get_tree(max_depth=0)
+        assert len(contexts) > 0
+
+        result = await bidi_session.script.evaluate(
+            expression="navigator.webdriver",
+            target=ContextTarget(contexts[0]["context"]),
+            await_promise=False,
+        )
+
+        assert result == {"type": "boolean", "value": True}
diff --git a/testing/web-platform/mozilla/tests/webdriver/bidi/script/exception_details.py b/testing/web-platform/mozilla/tests/webdriver/bidi/script/exception_details.py
new file mode 100644
index 0000000000..43bccdb845
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/webdriver/bidi/script/exception_details.py
@@ -0,0 +1,69 @@
+import pytest
+from webdriver.bidi.modules.script import ContextTarget, ScriptEvaluateResultException
+
+
+@pytest.mark.asyncio
+@pytest.mark.parametrize("await_promise", [True, False])
+@pytest.mark.parametrize(
+    "expression",
+    [
+        "null",
+        "{ toString: 'not a function' }",
+        "{ toString: () => {{ throw 'toString not allowed'; }} }",
+        "{ toString: () => true }",
+    ],
+)
+@pytest.mark.asyncio
+async def test_call_function_without_to_string_interface(
+    bidi_session, top_context, await_promise, expression
+):
+    function_declaration = "()=>{throw { toString: 'not a function' } }"
+    if await_promise:
+        function_declaration = "async" + function_declaration
+
+    with pytest.raises(ScriptEvaluateResultException) as exception:
+        await bidi_session.script.call_function(
+            function_declaration=function_declaration,
+            await_promise=await_promise,
+            target=ContextTarget(top_context["context"]),
+        )
+
+    assert "exceptionDetails" in exception.value.result
+    exceptionDetails = exception.value.result["exceptionDetails"]
+
+    assert "text" in exceptionDetails
+    assert isinstance(exceptionDetails["text"], str)
+
+
+@pytest.mark.asyncio
+@pytest.mark.parametrize("await_promise", [True, False])
+@pytest.mark.parametrize(
+    "expression",
+    [
+        "null",
+        "{ toString: 'not a function' }",
+        "{ toString: () => {{ throw 'toString not allowed'; }} }",
+        "{ toString: () => true }",
+    ],
+)
+@pytest.mark.asyncio
+async def test_evaluate_without_to_string_interface(
+    bidi_session, top_context, await_promise, expression
+):
+    if await_promise:
+        expression = f"Promise.reject({expression})"
+    else:
+        expression = f"throw {expression}"
+
+    with pytest.raises(ScriptEvaluateResultException) as exception:
+        await bidi_session.script.evaluate(
+            expression=expression,
+            await_promise=await_promise,
+            target=ContextTarget(top_context["context"]),
+        )
+
+    assert "exceptionDetails" in exception.value.result
+    exceptionDetails = exception.value.result["exceptionDetails"]
+
+    assert "text" in exceptionDetails
+    assert isinstance(exceptionDetails["text"], str)
diff --git a/testing/web-platform/mozilla/tests/webdriver/bidi/websocket_upgrade.py b/testing/web-platform/mozilla/tests/webdriver/bidi/websocket_upgrade.py
new file mode 100644
index 0000000000..e5ebfa1eb0
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/webdriver/bidi/websocket_upgrade.py
@@ -0,0 +1,156 @@
+import pytest
+from support.network import get_host, websocket_request
+
+
+@pytest.mark.parametrize(
+    "hostname, port_type, status",
+    [
+        # Valid hosts
+        ("localhost", "server_port", 101),
+        ("localhost", "default_port", 101),
+        ("127.0.0.1", "server_port", 101),
+        ("127.0.0.1", "default_port", 101),
+        ("[::1]", "server_port", 101),
+        ("[::1]", "default_port", 101),
+        ("192.168.8.1", "server_port", 101),
+        ("192.168.8.1", "default_port", 101),
+        ("[fdf8:f535:82e4::53]", "server_port", 101),
+        ("[fdf8:f535:82e4::53]", "default_port", 101),
+        # Invalid hosts
+        ("mozilla.org", "server_port", 400),
+        ("mozilla.org", "wrong_port", 400),
+        ("mozilla.org", "default_port", 400),
+        ("localhost", "wrong_port", 400),
+        ("127.0.0.1", "wrong_port", 400),
+        ("[::1]", "wrong_port", 400),
+        ("192.168.8.1", "wrong_port", 400),
+        ("[fdf8:f535:82e4::53]", "wrong_port", 400),
+    ],
+    ids=[
+        # Valid hosts
+        "localhost with same port as RemoteAgent",
+        "localhost with default port",
+        "127.0.0.1 (loopback) with same port as RemoteAgent",
+        "127.0.0.1 (loopback) with default port",
+        "[::1] (ipv6 loopback) with same port as RemoteAgent",
+        "[::1] (ipv6 loopback) with default port",
+        "ipv4 address with same port as RemoteAgent",
+        "ipv4 address with default port",
+        "ipv6 address with same port as RemoteAgent",
+        "ipv6 address with default port",
+        # Invalid hosts
+        "random hostname with the same port as RemoteAgent",
+        "random hostname with a different port than RemoteAgent",
+        "random hostname with default port",
+        "localhost with a different port than RemoteAgent",
+        "127.0.0.1 (loopback) with a different port than RemoteAgent",
+        "[::1] (ipv6 loopback) with a different port than RemoteAgent",
+        "ipv4 address with a different port than RemoteAgent",
+        "ipv6 address with a different port than RemoteAgent",
+    ],
+)
+def test_host_header(browser, hostname, port_type, status):
+    # Request a default browser
+    current_browser = browser(use_bidi=True)
+    server_host = current_browser.remote_agent_host
+    server_port = current_browser.remote_agent_port
+    test_host = get_host(port_type, hostname, server_port)
+
+    response = websocket_request(server_host, server_port, host=test_host)
+    assert response.status == status
+
+
+@pytest.mark.parametrize(
+    "hostname, port_type, status",
+    [
+        # Allowed hosts
+        ("testhost", "server_port", 101),
+        ("testhost", "default_port", 101),
+        ("testhost", "wrong_port", 400),
+        # IP addresses
+        ("192.168.8.1", "server_port", 101),
+        ("192.168.8.1", "default_port", 101),
+        ("[fdf8:f535:82e4::53]", "server_port", 101),
+        ("[fdf8:f535:82e4::53]", "default_port", 101),
+        ("127.0.0.1", "server_port", 101),
+        ("127.0.0.1", "default_port", 101),
+        ("[::1]", "server_port", 101),
+        ("[::1]", "default_port", 101),
+        # Localhost
+        ("localhost", "server_port", 400),
+        ("localhost", "default_port", 400),
+    ],
+    ids=[
+        # Allowed hosts
+        "allowed host with same port as RemoteAgent",
+        "allowed host with default port",
+        "allowed host with wrong port",
+        # IP addresses
+        "ipv4 address with same port as RemoteAgent",
+        "ipv4 address with default port",
+        "ipv6 address with same port as RemoteAgent",
+        "ipv6 address with default port",
+        "127.0.0.1 (loopback) with same port as RemoteAgent",
+        "127.0.0.1 (loopback) with default port",
+        "[::1] (ipv6 loopback) with same port as RemoteAgent",
+        "[::1] (ipv6 loopback) with default port",
+        # Localhost
+        "localhost with same port as RemoteAgent",
+        "localhost with default port",
+    ],
+)
+def test_allowed_hosts(browser, hostname, port_type, status):
+    # Request a browser with custom allowed hosts.
+    current_browser = browser(
+        use_bidi=True,
+        extra_args=["--remote-allow-hosts", "testhost"],
+    )
+    server_host = current_browser.remote_agent_host
+    server_port = current_browser.remote_agent_port
+    test_host = get_host(port_type, hostname, server_port)
+
+    response = websocket_request(server_host, server_port, host=test_host)
+    assert response.status == status
+
+
+@pytest.mark.parametrize(
+    "origin, status",
+    [
+        (None, 101),
+        ("", 400),
+        ("sometext", 400),
+        ("http://localhost:1234", 400),
+    ],
+)
+def test_origin_header(browser, origin, status):
+    # Request a default browser.
+    current_browser = browser(use_bidi=True)
+    server_host = current_browser.remote_agent_host
+    server_port = current_browser.remote_agent_port
+    response = websocket_request(server_host, server_port, origin=origin)
+    assert response.status == status
+
+
+@pytest.mark.parametrize(
+    "origin, status",
+    [
+        (None, 101),
+        ("", 400),
+        ("sometext", 400),
+        ("http://localhost:1234", 101),
+        ("https://localhost:1234", 400),
+    ],
+)
+def test_allowed_origins(browser, origin, status):
+    # Request a browser with custom allowed origins.
+    current_browser = browser(
+        use_bidi=True,
+        extra_args=["--remote-allow-origins", "http://localhost:1234"],
+    )
+    server_port = current_browser.remote_agent_port
+
+    # Both `localhost` and `127.0.0.1` have to accept connections.
+    for target_host in ["127.0.0.1", "localhost"]:
+        print(f"Connecting to the WebSocket via host {target_host}")
+        response = websocket_request(target_host, server_port, origin=origin)
+        assert response.status == status
diff --git a/testing/web-platform/mozilla/tests/webdriver/cdp/__init__.py b/testing/web-platform/mozilla/tests/webdriver/cdp/__init__.py
new file mode 100644
index 0000000000..e69de29bb2
diff --git a/testing/web-platform/mozilla/tests/webdriver/cdp/debugger_address.py b/testing/web-platform/mozilla/tests/webdriver/cdp/debugger_address.py
new file mode 100644
index 0000000000..ef9a301d24
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/webdriver/cdp/debugger_address.py
@@ -0,0 +1,45 @@
+# META: timeout=long
+
+import json
+
+import pytest
+from support.context import using_context
+from tests.support.http_request import HTTPRequest
+
+
+def test_debugger_address_not_set(session):
+    debugger_address = session.capabilities.get("moz:debuggerAddress")
+    assert debugger_address is None
+
+
+@pytest.mark.capabilities({"moz:debuggerAddress": False})
+def test_debugger_address_false(session):
+    debugger_address = session.capabilities.get("moz:debuggerAddress")
+    assert debugger_address is None
+
+
+@pytest.mark.capabilities({"moz:debuggerAddress": True})
+@pytest.mark.parametrize("fission_enabled", [True, False], ids=["enabled", "disabled"])
+def test_debugger_address_true_with_fission(session, fission_enabled):
+    debugger_address = session.capabilities.get("moz:debuggerAddress")
+    assert debugger_address is not None
+
+    host, port = debugger_address.split(":")
+    assert host == "127.0.0.1"
+    assert port.isnumeric()
+
+    # Fetch the browser version via the debugger address, `localhost` has
+    # to work as well.
+    for target_host in [host, "localhost"]:
+        print(f"Connecting to WebSocket via host {target_host}")
+        http = HTTPRequest(target_host, int(port))
+        with http.get("/json/version") as response:
+            data = json.loads(response.read())
+            assert session.capabilities["browserVersion"] in data["Browser"]
+
+    # Ensure Fission is not disabled (bug 1813981)
+    with using_context(session, "chrome"):
+        assert (
+            session.execute_script("""return Services.appinfo.fissionAutostart""")
+            is fission_enabled
+        )
diff --git a/testing/web-platform/mozilla/tests/webdriver/cdp/port_file.py b/testing/web-platform/mozilla/tests/webdriver/cdp/port_file.py
new file mode 100644
index 0000000000..aa294deb24
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/webdriver/cdp/port_file.py
@@ -0,0 +1,30 @@
+import os
+
+from support.network import websocket_request
+
+
+def test_devtools_active_port_file(browser):
+    current_browser = browser(use_cdp=True)
+
+    assert current_browser.remote_agent_port != 0
+    assert current_browser.debugger_address.startswith("/devtools/browser/")
+
+    port_file = os.path.join(current_browser.profile.profile, "DevToolsActivePort")
+    assert os.path.exists(port_file)
+
+    current_browser.quit(clean_profile=False)
+    assert not os.path.exists(port_file)
+
+
+def test_connect(browser):
+    current_browser = browser(use_cdp=True)
+
+    # Both `localhost` and `127.0.0.1` have to accept connections.
+    for target_host in ["127.0.0.1", "localhost"]:
+        print(f"Connecting to the WebSocket via host {target_host}")
+        response = websocket_request(
+            target_host,
+            current_browser.remote_agent_port,
+            path=current_browser.debugger_address,
+        )
+        assert response.status == 101
diff --git a/testing/web-platform/mozilla/tests/webdriver/classic/element_send_keys/__init__.py b/testing/web-platform/mozilla/tests/webdriver/classic/element_send_keys/__init__.py
new file mode 100644
index 0000000000..e69de29bb2
diff --git a/testing/web-platform/mozilla/tests/webdriver/classic/element_send_keys/scroll_into_view.py b/testing/web-platform/mozilla/tests/webdriver/classic/element_send_keys/scroll_into_view.py
new file mode 100644
index 0000000000..080195d345
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/webdriver/classic/element_send_keys/scroll_into_view.py
@@ -0,0 +1,50 @@
+from tests.support.asserts import assert_success
+from tests.support.helpers import is_element_in_viewport
+
+
+def element_send_keys(session, element, text):
+    return session.transport.send(
+        "POST",
+        "/session/{session_id}/element/{element_id}/value".format(
+            session_id=session.session_id, element_id=element.id
+        ),
+        {"text": text},
+    )
+
+
+def test_option_select_container_outside_of_scrollable_viewport(session, inline):
+    session.url = inline(
+        """
+        
+    """
+    )
+    element = session.find.css("option#bar", all=False)
+    select = session.find.css("select", all=False)
+
+    response = element_send_keys(session, element, "bar")
+    assert_success(response)
+
+    assert is_element_in_viewport(session, select)
+    assert is_element_in_viewport(session, element)
+
+
+def test_option_stays_outside_of_scrollable_viewport(session, inline):
+    session.url = inline(
+        """
+        
+    """
+    )
+    select = session.find.css("select", all=False)
+    option_bar = session.find.css("option#bar", all=False)
+
+    response = element_send_keys(session, option_bar, "bar")
+    assert_success(response)
+
+    assert is_element_in_viewport(session, select)
+    assert is_element_in_viewport(session, option_bar)
diff --git a/testing/web-platform/mozilla/tests/webdriver/classic/element_send_keys/send_keys.py b/testing/web-platform/mozilla/tests/webdriver/classic/element_send_keys/send_keys.py
new file mode 100644
index 0000000000..1399959ceb
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/webdriver/classic/element_send_keys/send_keys.py
@@ -0,0 +1,24 @@
+from tests.support.asserts import assert_success
+from tests.support.keys import Keys
+
+
+def element_send_keys(session, element, text):
+    return session.transport.send(
+        "POST",
+        "/session/{session_id}/element/{element_id}/value".format(
+            session_id=session.session_id, element_id=element.id
+        ),
+        {"text": text},
+    )
+
+
+def test_modifier_key_toggles(session, inline, modifier_key):
+    session.url = inline("")
+    element = session.find.css("input", all=False)
+
+    response = element_send_keys(
+        session, element, f"{modifier_key}a{modifier_key}{Keys.DELETE}cheese"
+    )
+    assert_success(response)
+
+    assert element.property("value") == "cheese"
diff --git a/testing/web-platform/mozilla/tests/webdriver/classic/execute_async_script/__init__.py b/testing/web-platform/mozilla/tests/webdriver/classic/execute_async_script/__init__.py
new file mode 100644
index 0000000000..e69de29bb2
diff --git a/testing/web-platform/mozilla/tests/webdriver/classic/execute_async_script/execute_async.py b/testing/web-platform/mozilla/tests/webdriver/classic/execute_async_script/execute_async.py
new file mode 100644
index 0000000000..990f2c1b31
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/webdriver/classic/execute_async_script/execute_async.py
@@ -0,0 +1,59 @@
+import pytest
+from tests.support.asserts import assert_success
+from tests.support.sync import Poll
+
+
+def execute_async_script(session, script, args=None):
+    if args is None:
+        args = []
+    body = {"script": script, "args": args}
+
+    return session.transport.send(
+        "POST", "/session/{session_id}/execute/async".format(**vars(session)), body
+    )
+
+
+@pytest.mark.parametrize("dialog_type", ["alert", "confirm", "prompt"])
+def test_no_abort_by_user_prompt_in_other_tab(session, inline, dialog_type):
+    original_handle = session.window_handle
+    original_handles = session.handles
+
+    session.url = inline(
+        """
+      open window
+      
+    """.format(
+            dialog_type
+        )
+    )
+
+    session.find.css("a", all=False).click()
+    wait = Poll(session, timeout=5, message="No new window has been opened")
+    new_handles = wait.until(lambda s: set(s.handles) - set(original_handles))
+    assert len(new_handles) == 1
+
+    session.window_handle = new_handles.pop()
+
+    response = execute_async_script(
+        session,
+        """
+        const resolve = arguments[0];
+
+        // Trigger opening a user prompt in the other window.
+        window.opener.postMessage("foo", "*");
+
+        // Delay resolving the Promise to ensure a user prompt has been opened.
+        setTimeout(() => resolve(42), 500);
+        """,
+    )
+
+    assert_success(response, 42)
+
+    session.window.close()
+
+    session.window_handle = original_handle
+    session.alert.accept()
diff --git a/testing/web-platform/mozilla/tests/webdriver/classic/get_window_handle/__init__.py b/testing/web-platform/mozilla/tests/webdriver/classic/get_window_handle/__init__.py
new file mode 100644
index 0000000000..e69de29bb2
diff --git a/testing/web-platform/mozilla/tests/webdriver/classic/get_window_handle/chrome.py b/testing/web-platform/mozilla/tests/webdriver/classic/get_window_handle/chrome.py
new file mode 100644
index 0000000000..af24be4b9e
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/webdriver/classic/get_window_handle/chrome.py
@@ -0,0 +1,25 @@
+from support.context import using_context
+from tests.support.asserts import assert_success
+
+
+def get_window_handle(session):
+    return session.transport.send(
+        "GET", "session/{session_id}/window".format(**vars(session))
+    )
+
+
+def test_basic(session):
+    with using_context(session, "chrome"):
+        response = get_window_handle(session)
+        assert_success(response, session.window_handle)
+
+
+def test_different_handle_than_content_scope(session):
+    response = get_window_handle(session)
+    content_handle = assert_success(response)
+
+    with using_context(session, "chrome"):
+        response = get_window_handle(session)
+        chrome_handle = assert_success(response)
+
+    assert chrome_handle != content_handle
diff --git a/testing/web-platform/mozilla/tests/webdriver/classic/get_window_handles/__init__.py b/testing/web-platform/mozilla/tests/webdriver/classic/get_window_handles/__init__.py
new file mode 100644
index 0000000000..e69de29bb2
diff --git a/testing/web-platform/mozilla/tests/webdriver/classic/get_window_handles/chrome.py b/testing/web-platform/mozilla/tests/webdriver/classic/get_window_handles/chrome.py
new file mode 100644
index 0000000000..091ac01e6c
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/webdriver/classic/get_window_handles/chrome.py
@@ -0,0 +1,43 @@
+from support.context import using_context
+from tests.support.asserts import assert_success
+
+
+def get_window_handles(session):
+    return session.transport.send(
+        "GET", "session/{session_id}/window/handles".format(**vars(session))
+    )
+
+
+def test_basic(session):
+    with using_context(session, "chrome"):
+        response = get_window_handles(session)
+        assert_success(response, session.handles)
+
+
+def test_different_handles_than_content_scope(session):
+    response = get_window_handles(session)
+    content_handles = assert_success(response)
+
+    with using_context(session, "chrome"):
+        response = get_window_handles(session)
+        chrome_handles = assert_success(response)
+
+    assert chrome_handles != content_handles
+    assert len(chrome_handles) == 1
+    assert len(content_handles) == 1
+
+
+def test_multiple_windows_and_tabs(session):
+    session.new_window(type_hint="window")
+    session.new_window(type_hint="tab")
+
+    response = get_window_handles(session)
+    content_handles = assert_success(response)
+
+    with using_context(session, "chrome"):
+        response = get_window_handles(session)
+        chrome_handles = assert_success(response)
+
+    assert chrome_handles != content_handles
+    assert len(chrome_handles) == 2
+    assert len(content_handles) == 3
diff --git a/testing/web-platform/mozilla/tests/webdriver/classic/new_session/__init__.py b/testing/web-platform/mozilla/tests/webdriver/classic/new_session/__init__.py
new file mode 100644
index 0000000000..e69de29bb2
diff --git a/testing/web-platform/mozilla/tests/webdriver/classic/new_session/bidi_disabled.py b/testing/web-platform/mozilla/tests/webdriver/classic/new_session/bidi_disabled.py
new file mode 100644
index 0000000000..eeb5a18740
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/webdriver/classic/new_session/bidi_disabled.py
@@ -0,0 +1,33 @@
+from copy import deepcopy
+
+
+def test_marionette_fallback_webdriver_session(configuration, geckodriver):
+    config = deepcopy(configuration)
+    config["capabilities"]["webSocketUrl"] = True
+
+    prefs = config["capabilities"]["moz:firefoxOptions"].get("prefs", {})
+    prefs.update({"remote.active-protocols": 2})
+    config["capabilities"]["moz:firefoxOptions"]["prefs"] = prefs
+
+    try:
+        driver = geckodriver(config=config)
+        driver.new_session()
+
+        assert driver.session.capabilities.get("webSocketUrl") is None
+
+        # Sanity check that Marionette works as expected and by default returns
+        # at least one window handle
+        assert len(driver.session.handles) >= 1
+
+    finally:
+        driver.stop()
+
+        # WebDriver BiDi has to be re-enabled. Because we cannot easily
+        # get rid of the value let geckodriver overwrite it with the current
+        # default.
+        prefs.update({"remote.active-protocols": 3})
+
+        driver = geckodriver(config=config)
+        driver.new_session()
+
+        assert driver.session.capabilities.get("webSocketUrl") is not None
diff --git a/testing/web-platform/mozilla/tests/webdriver/classic/new_session/binary.py b/testing/web-platform/mozilla/tests/webdriver/classic/new_session/binary.py
new file mode 100644
index 0000000000..79d1f842ed
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/webdriver/classic/new_session/binary.py
@@ -0,0 +1,33 @@
+import os
+
+from tests.support.asserts import assert_error, assert_success
+
+
+def test_bad_binary(new_session, configuration):
+    # skipif annotations are forbidden in wpt
+    if os.path.exists("/bin/echo"):
+        capabilities = configuration["capabilities"].copy()
+        capabilities["moz:firefoxOptions"]["binary"] = "/bin/echo"
+
+        response, _ = new_session({"capabilities": {"alwaysMatch": capabilities}})
+        assert_error(response, "invalid argument")
+
+
+def test_shell_script_binary(new_session, configuration):
+    # skipif annotations are forbidden in wpt
+    if os.path.exists("/bin/bash"):
+        capabilities = configuration["capabilities"].copy()
+        binary = configuration["browser"]["binary"]
+
+        path = os.path.abspath("firefox.sh")
+        assert not os.path.exists(path)
+        try:
+            script = f"""#!/bin/bash\n\n"{binary}" $@\n"""
+            with open("firefox.sh", "w") as f:
+                f.write(script)
+            os.chmod(path, 0o744)
+            capabilities["moz:firefoxOptions"]["binary"] = path
+            response, _ = new_session({"capabilities": {"alwaysMatch": capabilities}})
+            assert_success(response)
+        finally:
+            os.unlink(path)
diff --git a/testing/web-platform/mozilla/tests/webdriver/classic/new_session/conftest.py b/testing/web-platform/mozilla/tests/webdriver/classic/new_session/conftest.py
new file mode 100644
index 0000000000..1cab6784c2
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/webdriver/classic/new_session/conftest.py
@@ -0,0 +1,58 @@
+import pytest
+from webdriver.transport import HTTPWireProtocol
+
+
+@pytest.fixture(name="configuration")
+def fixture_configuration(configuration):
+    """Remove "acceptInsecureCerts" from capabilities if it exists.
+
+    Some browser configurations add acceptInsecureCerts capability by default.
+    Remove it during new_session tests to avoid interference.
+    """
+    if "acceptInsecureCerts" in configuration["capabilities"]:
+        configuration = dict(configuration)
+        del configuration["capabilities"]["acceptInsecureCerts"]
+    return configuration
+
+
+@pytest.fixture(name="new_session")
+def fixture_new_session(request, configuration, current_session):
+    """Start a new session for tests which themselves test creating new sessions.
+
+    :param body: The content of the body for the new session POST request.
+
+    :param delete_existing_session: Allows the fixture to delete an already
+     created custom session before the new session is getting created. This
+     is useful for tests which call this fixture multiple times within the
+     same test.
+    """
+    custom_session = {}
+
+    transport = HTTPWireProtocol(
+        configuration["host"],
+        configuration["port"],
+        url_prefix="/",
+    )
+
+    def _delete_session(session_id):
+        transport.send("DELETE", "session/{}".format(session_id))
+
+    def new_session(body, delete_existing_session=False, headers=None):
+        # If there is an active session from the global session fixture,
+        # delete that one first
+        if current_session is not None:
+            current_session.end()
+
+        if delete_existing_session:
+            _delete_session(custom_session["session"]["sessionId"])
+
+        response = transport.send("POST", "session", body, headers=headers)
+        if response.status == 200:
+            custom_session["session"] = response.body["value"]
+        return response, custom_session.get("session", None)
+
+    yield new_session
+
+    if custom_session.get("session") is not None:
+        _delete_session(custom_session["session"]["sessionId"])
+        custom_session = None
diff --git a/testing/web-platform/mozilla/tests/webdriver/classic/new_session/create.py b/testing/web-platform/mozilla/tests/webdriver/classic/new_session/create.py
new file mode 100644
index 0000000000..9649b938ad
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/webdriver/classic/new_session/create.py
@@ -0,0 +1,11 @@
+# META: timeout=long
+from tests.support.asserts import assert_success
+
+
+def test_valid_content_type(new_session, configuration):
+    headers = {"content-type": "application/json"}
+    response, _ = new_session(
+        {"capabilities": {"alwaysMatch": dict(configuration["capabilities"])}},
+        headers=headers,
+    )
+    assert_success(response)
diff --git a/testing/web-platform/mozilla/tests/webdriver/classic/new_session/invalid.py b/testing/web-platform/mozilla/tests/webdriver/classic/new_session/invalid.py
new file mode 100644
index 0000000000..dc7a0caee9
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/webdriver/classic/new_session/invalid.py
@@ -0,0 +1,53 @@
+from copy import deepcopy
+
+import pytest
+from tests.support.asserts import assert_error
+
+
+@pytest.mark.parametrize(
+    "headers",
+    [
+        {"origin": "http://localhost"},
+        {"origin": "http://localhost:8000"},
+        {"origin": "http://127.0.0.1"},
+        {"origin": "http://127.0.0.1:8000"},
+        {"origin": "null"},
+        {"ORIGIN": "https://example.org"},
+        {"host": "example.org:4444"},
+        {"Host": "example.org"},
+        {"host": "localhost:80"},
+        {"host": "localhost"},
+        {"content-type": "application/x-www-form-urlencoded"},
+        {"content-type": "multipart/form-data"},
+        {"content-type": "text/plain"},
+        {"Content-TYPE": "APPLICATION/x-www-form-urlencoded"},
+        {"content-type": "MULTIPART/FORM-DATA"},
+        {"CONTENT-TYPE": "TEXT/PLAIN"},
+        {"content-type": "text/plain ; charset=utf-8"},
+        {"content-type": "text/plain;foo"},
+        {"content-type": "text/PLAIN  ;  foo;charset=utf8"},
+    ],
+)
+def test_invalid(new_session, configuration, headers):
+    response, _ = new_session(
+        {"capabilities": {"alwaysMatch": dict(configuration["capabilities"])}},
+        headers=headers,
+    )
+    assert_error(response, "unknown error")
+
+
+@pytest.mark.parametrize(
+    "argument",
+    [
+        "--marionette",
+        "--remote-debugging-port",
+        "--remote-allow-hosts",
+        "--remote-allow-origins",
+    ],
+)
+def test_forbidden_arguments(configuration, new_session, argument):
+    capabilities = deepcopy(configuration["capabilities"])
+    capabilities["moz:firefoxOptions"]["args"] = [argument]
+
+    response, _ = new_session({"capabilities": {"alwaysMatch": capabilities}})
+    assert_error(response, "invalid argument")
diff --git a/testing/web-platform/mozilla/tests/webdriver/classic/new_session/profile_root.py b/testing/web-platform/mozilla/tests/webdriver/classic/new_session/profile_root.py
new file mode 100644
index 0000000000..8bbdbadc69
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/webdriver/classic/new_session/profile_root.py
@@ -0,0 +1,38 @@
+import copy
+import os
+
+import pytest
+
+
+def test_profile_root(tmp_path, configuration, geckodriver):
+    profile_path = os.path.join(tmp_path, "geckodriver-test")
+    os.makedirs(profile_path)
+
+    config = copy.deepcopy(configuration)
+    # Ensure we don't set a profile in command line arguments
+    del config["capabilities"]["moz:firefoxOptions"]["args"]
+
+    extra_args = ["--profile-root", profile_path]
+
+    assert os.listdir(profile_path) == []
+
+    driver = geckodriver(config=config, extra_args=extra_args)
+    driver.new_session()
+    assert len(os.listdir(profile_path)) == 1
+    driver.delete_session()
+    assert os.listdir(profile_path) == []
+
+
+def test_profile_root_missing(tmp_path, configuration, geckodriver):
+    profile_path = os.path.join(tmp_path, "missing-path")
+    assert not os.path.exists(profile_path)
+
+    config = copy.deepcopy(configuration)
+    # Ensure we don't set a profile in command line arguments
+    del config["capabilities"]["moz:firefoxOptions"]["args"]
+
+    extra_args = ["--profile-root", profile_path]
+
+    with pytest.raises(ChildProcessError) as exc_info:
+        geckodriver(config=config, extra_args=extra_args)
+    assert str(exc_info.value) == "geckodriver terminated with code 64"
diff --git a/testing/web-platform/mozilla/tests/webdriver/classic/protocol/__init__.py b/testing/web-platform/mozilla/tests/webdriver/classic/protocol/__init__.py
new file mode 100644
index 0000000000..e69de29bb2
diff --git a/testing/web-platform/mozilla/tests/webdriver/classic/protocol/allow_hosts.py b/testing/web-platform/mozilla/tests/webdriver/classic/protocol/allow_hosts.py
new file mode 100644
index 0000000000..17ae2c2c68
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/webdriver/classic/protocol/allow_hosts.py
@@ -0,0 +1,53 @@
+from copy import deepcopy
+
+import pytest
+from support.network import get_host, http_request, websocket_request
+
+
+@pytest.mark.parametrize(
+    "allow_hosts, hostname, port_type, status",
+    [
+        # Valid hosts
+        (["localhost.localdomain", "localhost"], "localhost", "server_port", 200),
+        (["localhost.localdomain", "localhost"], "127.0.0.1", "server_port", 200),
+        # Invalid hosts
+        (["localhost.localdomain"], "localhost", "server_port", 500),
+        (["localhost"], "localhost", "wrong_port", 500),
+        (["www.localhost"], "localhost", "server_port", 500),
+    ],
+)
+def test_allow_hosts(geckodriver, allow_hosts, hostname, port_type, status):
+    extra_args = ["--allow-hosts"] + allow_hosts
+
+    driver = geckodriver(hostname=hostname, extra_args=extra_args)
+    host = get_host(port_type, hostname, driver.port)
+    response = http_request(driver.hostname, driver.port, host=host)
+
+    assert response.status == status
+
+
+@pytest.mark.parametrize(
+    "allow_hosts, hostname, status",
+    [
+        (["mozilla.org", "testhost"], "testhost", 101),
+        (["mozilla.org"], "testhost", 400),
+    ],
+    ids=["allowed", "not allowed"],
+)
+def test_allow_hosts_passed_to_remote_agent(
+    configuration, geckodriver, allow_hosts, hostname, status
+):
+    config = deepcopy(configuration)
+    config["capabilities"]["webSocketUrl"] = True
+
+    extra_args = ["--allow-hosts"] + allow_hosts
+
+    driver = geckodriver(config=config, extra_args=extra_args)
+
+    driver.new_session()
+
+    host = get_host("default_port", hostname, driver.remote_agent_port)
+    response = websocket_request("127.0.0.1", driver.remote_agent_port, host=host)
+    assert response.status == status
+
+    driver.delete_session()
diff --git a/testing/web-platform/mozilla/tests/webdriver/classic/protocol/allow_origins.py b/testing/web-platform/mozilla/tests/webdriver/classic/protocol/allow_origins.py
new file mode 100644
index 0000000000..72b6fba482
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/webdriver/classic/protocol/allow_origins.py
@@ -0,0 +1,56 @@
+from copy import deepcopy
+
+import pytest
+from support.network import http_request, websocket_request
+
+
+@pytest.mark.parametrize(
+    "allow_origins, origin, status",
+    [
+        # Valid origins
+        (["http://web-platform.test"], "http://web-platform.test", 200),
+        (["http://web-platform.test"], "http://web-platform.test:80", 200),
+        (["https://web-platform.test"], "https://web-platform.test:443", 200),
+        # Invalid origins
+        (["https://web-platform.test"], "http://web-platform.test", 500),
+        (["http://web-platform.test:8000"], "http://web-platform.test", 500),
+        (["http://web-platform.test"], "http://www.web-platform.test", 500),
+    ],
+)
+def test_allow_hosts(configuration, geckodriver, allow_origins, origin, status):
+    extra_args = ["--allow-origins"] + allow_origins
+
+    driver = geckodriver(extra_args=extra_args)
+    response = http_request(driver.hostname, driver.port, origin=origin)
+
+    assert response.status == status
+
+
+@pytest.mark.parametrize(
+    "allow_origins, origin, status",
+    [
+        (
+            ["https://web-platform.test", "http://web-platform.test"],
+            "http://web-platform.test",
+            101,
+        ),
+        (["https://web-platform.test"], "http://web-platform.test", 400),
+    ],
+    ids=["allowed", "not allowed"],
+)
+def test_allow_origins_passed_to_remote_agent(
+    configuration, geckodriver, allow_origins, origin, status
+):
+    config = deepcopy(configuration)
+    config["capabilities"]["webSocketUrl"] = True
+
+    extra_args = ["--allow-origins"] + allow_origins
+
+    driver = geckodriver(config=config, extra_args=extra_args)
+
+    driver.new_session()
+
+    response = websocket_request("127.0.0.1", driver.remote_agent_port, origin=origin)
+    assert response.status == status
+
+    driver.delete_session()
diff --git a/testing/web-platform/mozilla/tests/webdriver/classic/protocol/marionette_port.py b/testing/web-platform/mozilla/tests/webdriver/classic/protocol/marionette_port.py
new file mode 100644
index 0000000000..09951abc43
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/webdriver/classic/protocol/marionette_port.py
@@ -0,0 +1,41 @@
+import os
+from copy import deepcopy
+
+import pytest
+
+
+@pytest.mark.parametrize("port", ["0", "2828"], ids=["system allocated", "fixed"])
+def test_marionette_port(geckodriver, port):
+    extra_args = ["--marionette-port", port]
+
+    driver = geckodriver(extra_args=extra_args)
+    driver.new_session()
+    driver.delete_session()
+
+
+def test_marionette_port_outdated_active_port_file(
+    configuration, geckodriver, custom_profile
+):
+    config = deepcopy(configuration)
+    extra_args = ["--marionette-port", "0"]
+
+    # Prepare a Marionette active port file that contains a port which will
+    # never be used when requesting a system allocated port.
+    active_port_file = os.path.join(custom_profile.profile, "MarionetteActivePort")
+    with open(active_port_file, "wb") as f:
+        f.write(b"53")
+
+    config["capabilities"]["moz:firefoxOptions"]["args"] = [
+        "--profile",
+        custom_profile.profile,
+    ]
+
+    driver = geckodriver(config=config, extra_args=extra_args)
+
+    driver.new_session()
+    with open(active_port_file, "rb") as f:
+        assert f.readline() != b"53"
+
+    driver.delete_session()
+    with pytest.raises(FileNotFoundError):
+        open(active_port_file, "rb")
diff --git a/testing/web-platform/mozilla/tests/webdriver/classic/protocol/request.py b/testing/web-platform/mozilla/tests/webdriver/classic/protocol/request.py
new file mode 100644
index 0000000000..ad99d6964d
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/webdriver/classic/protocol/request.py
@@ -0,0 +1,72 @@
+import pytest
+from support.network import get_host, http_request
+
+
+@pytest.mark.parametrize(
+    "hostname, port_type, status",
+    [
+        # Valid hosts
+        ("localhost", "server_port", 200),
+        ("127.0.0.1", "server_port", 200),
+        ("[::1]", "server_port", 200),
+        ("192.168.8.1", "server_port", 200),
+        ("[fdf8:f535:82e4::53]", "server_port", 200),
+        # Invalid hosts
+        ("localhost", "default_port", 500),
+        ("127.0.0.1", "default_port", 500),
+        ("[::1]", "default_port", 500),
+        ("192.168.8.1", "default_port", 500),
+        ("[fdf8:f535:82e4::53]", "default_port", 500),
+        ("example.org", "server_port", 500),
+        ("example.org", "wrong_port", 500),
+        ("example.org", "default_port", 500),
+        ("localhost", "wrong_port", 500),
+        ("127.0.0.1", "wrong_port", 500),
+        ("[::1]", "wrong_port", 500),
+        ("192.168.8.1", "wrong_port", 500),
+        ("[fdf8:f535:82e4::53]", "wrong_port", 500),
+    ],
+    ids=[
+        # Valid hosts
+        "localhost with same port as server",
+        "127.0.0.1 (loopback) with same port as server",
+        "[::1] (ipv6 loopback) with same port as server",
+        "ipv4 address with same port as server",
+        "ipv6 address with same port as server",
+        # Invalid hosts
+        "localhost with default port",
+        "127.0.0.1 (loopback) with default port",
+        "[::1] (ipv6 loopback) with default port",
+        "ipv4 address with default port",
+        "ipv6 address with default port",
+        "random hostname with the same port as server",
+        "random hostname with a different port than server",
+        "random hostname with default port",
+        "localhost with a different port than server",
+        "127.0.0.1 (loopback) with a different port than server",
+        "[::1] (ipv6 loopback) with a different port than server",
+        "ipv4 address with a different port than server",
+        "ipv6 address with a different port than server",
+    ],
+)
+def test_host_header(configuration, hostname, port_type, status):
+    host = get_host(port_type, hostname, configuration["port"])
+    response = http_request(configuration["host"], configuration["port"], host=host)
+
+    assert response.status == status
+
+
+@pytest.mark.parametrize(
+    "origin, add_port, status",
+    [
+        (None, False, 200),
+        ("", False, 500),
+        ("sometext", False, 500),
+        ("http://localhost", True, 500),
+    ],
+)
+def test_origin_header(configuration, origin, add_port, status):
+    if add_port:
+        origin = f"{origin}:{configuration['port']}"
+    response = http_request(configuration["host"], configuration["port"], origin=origin)
+    assert response.status == status
diff --git a/testing/web-platform/mozilla/tests/webdriver/classic/send_alert_text.py b/testing/web-platform/mozilla/tests/webdriver/classic/send_alert_text.py
new file mode 100644
index 0000000000..60d6a02af0
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/webdriver/classic/send_alert_text.py
@@ -0,0 +1,22 @@
+from tests.support.asserts import assert_error
+from tests.support.http_handlers.authentication import basic_authentication
+
+
+def send_alert_text(session, text=None):
+    return session.transport.send(
+        "POST",
+        "session/{session_id}/alert/text".format(**vars(session)),
+        {"text": text},
+    )
+
+
+def test_basic_auth_unsupported_operation(url, session):
+    """
+    Basic auth dialogues are not included in HTML's definition of
+    'user prompts': those are limited to the 'simple dialogues'
+    such as window.alert(), window.prompt() et al. and the print
+    dialogue.
+    """
+    session.url = basic_authentication(url)
+    response = send_alert_text(session, "Federer")
+    assert_error(response, "unsupported operation")
diff --git a/testing/web-platform/mozilla/tests/webdriver/classic/take_full_screenshot/__init__.py b/testing/web-platform/mozilla/tests/webdriver/classic/take_full_screenshot/__init__.py
new file mode 100644
index 0000000000..11a8a58a0f
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/webdriver/classic/take_full_screenshot/__init__.py
@@ -0,0 +1,12 @@
+def document_dimensions(session):
+    return tuple(
+        session.execute_script(
+            """
+        const {devicePixelRatio} = window;
+        const width = document.documentElement.scrollWidth;
+        const height = document.documentElement.scrollHeight;
+
+        return [Math.floor(width * devicePixelRatio), Math.floor(height * devicePixelRatio)];
+        """
+        )
+    )
diff --git a/testing/web-platform/mozilla/tests/webdriver/classic/take_full_screenshot/iframe.py b/testing/web-platform/mozilla/tests/webdriver/classic/take_full_screenshot/iframe.py
new file mode 100644
index 0000000000..fc231f2e11
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/webdriver/classic/take_full_screenshot/iframe.py
@@ -0,0 +1,47 @@
+import pytest
+from tests.support.asserts import assert_success
+from tests.support.image import png_dimensions
+
+from . import document_dimensions
+
+DEFAULT_CSS_STYLE = """
+    
+"""
+
+DEFAULT_CONTENT = "
Lorem ipsum dolor sit amet.
"
+
+
+def take_full_screenshot(session):
+    return session.transport.send(
+        "GET",
+        "/session/{session_id}/moz/screenshot/full".format(
+            session_id=session.session_id
+        ),
+    )
+
+
+@pytest.mark.parametrize("domain", ["", "alt"], ids=["same_origin", "cross_origin"])
+def test_source_origin(session, url, domain, inline, iframe):
+    session.url = inline("""{0}{1}""".format(DEFAULT_CSS_STYLE, DEFAULT_CONTENT))
+
+    response = take_full_screenshot(session)
+    reference_screenshot = assert_success(response)
+    assert png_dimensions(reference_screenshot) == document_dimensions(session)
+
+    iframe_content = "{}".format(DEFAULT_CONTENT)
+    session.url = inline(
+        """{0}{1}""".format(DEFAULT_CSS_STYLE, iframe(iframe_content, domain=domain))
+    )
+
+    response = take_full_screenshot(session)
+    screenshot = assert_success(response)
+    assert png_dimensions(screenshot) == document_dimensions(session)
+
+    assert screenshot == reference_screenshot
diff --git a/testing/web-platform/mozilla/tests/webdriver/classic/take_full_screenshot/screenshot.py b/testing/web-platform/mozilla/tests/webdriver/classic/take_full_screenshot/screenshot.py
new file mode 100644
index 0000000000..02373afd57
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/webdriver/classic/take_full_screenshot/screenshot.py
@@ -0,0 +1,51 @@
+from tests.support.asserts import assert_error, assert_png, assert_success
+from tests.support.image import png_dimensions
+
+from . import document_dimensions
+
+
+def take_full_screenshot(session):
+    return session.transport.send(
+        "GET",
+        "/session/{session_id}/moz/screenshot/full".format(
+            session_id=session.session_id
+        ),
+    )
+
+
+def test_no_browsing_context(session, closed_window):
+    response = take_full_screenshot(session)
+    assert_error(response, "no such window")
+
+
+def test_html_document(session, inline):
+    session.url = inline("")
+
+    response = take_full_screenshot(session)
+    value = assert_success(response)
+    assert_png(value)
+    assert png_dimensions(value) == document_dimensions(session)
+
+
+def test_xhtml_document(session, inline):
+    session.url = inline('', doctype="xhtml")
+
+    response = take_full_screenshot(session)
+    value = assert_success(response)
+    assert_png(value)
+    assert png_dimensions(value) == document_dimensions(session)
+
+
+def test_document_extends_beyond_viewport(session, inline):
+    session.url = inline(
+        """
+        
+        """
+    )
+
+    response = take_full_screenshot(session)
+    value = assert_success(response)
+    assert_png(value)
+    assert png_dimensions(value) == document_dimensions(session)
diff --git a/testing/web-platform/mozilla/tests/webdriver/conftest.py b/testing/web-platform/mozilla/tests/webdriver/conftest.py
new file mode 100644
index 0000000000..d754b39e79
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/webdriver/conftest.py
@@ -0,0 +1,15 @@
+import os
+import sys
+
+base = os.path.dirname(__file__)
+webdriver_path = os.path.abspath(
+    os.path.join(base, "..", "..", "..", "tests", "webdriver")
+)
+sys.path.insert(0, os.path.join(webdriver_path))
+
+pytest_plugins = [
+    "support.fixtures",
+    "tests.support.fixtures",
+    "tests.support.fixtures_bidi",
+    "tests.support.fixtures_http",
+]
diff --git a/testing/web-platform/mozilla/tests/webdriver/support/__init__.py b/testing/web-platform/mozilla/tests/webdriver/support/__init__.py
new file mode 100644
index 0000000000..e69de29bb2
diff --git a/testing/web-platform/mozilla/tests/webdriver/support/context.py b/testing/web-platform/mozilla/tests/webdriver/support/context.py
new file mode 100644
index 0000000000..910b202075
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/webdriver/support/context.py
@@ -0,0 +1,20 @@
+import contextlib
+
+
+def set_context(session, context):
+    session.send_session_command("POST", "moz/context", {"context": context})
+
+
+@contextlib.contextmanager
+def using_context(session, context):
+    orig_context = session.send_session_command("GET", "moz/context")
+    needs_change = context != orig_context
+
+    if needs_change:
+        set_context(session, context)
+
+    try:
+        yield
+    finally:
+        if needs_change:
+            set_context(session, orig_context)
diff --git a/testing/web-platform/mozilla/tests/webdriver/support/fixtures.py b/testing/web-platform/mozilla/tests/webdriver/support/fixtures.py
new file mode 100644
index 0000000000..450f662969
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/webdriver/support/fixtures.py
@@ -0,0 +1,256 @@
+import json
+import os
+import socket
+import subprocess
+import time
+from contextlib import suppress
+from urllib.parse import urlparse
+
+import pytest
+import webdriver
+from mozprofile import Profile
+from mozrunner import FirefoxRunner
+
+from support.network import get_free_port
+
+
+@pytest.fixture(scope="module")
+def browser(full_configuration):
+    """Start a Firefox instance without using geckodriver.
+
+    geckodriver will automatically use the --remote-allow-hosts and
+    --remote.allow.origins command line arguments.
+
+    Starting Firefox without geckodriver allows to set those command line arguments
+    as needed. The fixture method returns the browser instance that should be used
+    to connect to a RemoteAgent supported protocol (CDP, WebDriver BiDi).
+    """
+    current_browser = None
+
+    def _browser(use_bidi=False, use_cdp=False, extra_args=None, extra_prefs=None):
+        nonlocal current_browser
+
+        # If the requested preferences and arguments match the ones for the
+        # already started firefox, we can reuse the current firefox instance,
+        # return the instance immediately.
+        if current_browser:
+            if (
+                current_browser.use_bidi == use_bidi
+                and current_browser.use_cdp == use_cdp
+                and current_browser.extra_args == extra_args
+                and current_browser.extra_prefs == extra_prefs
+                and current_browser.is_running
+            ):
+                return current_browser
+
+            # Otherwise, if firefox is already started, terminate it because we need
+            # to create a new instance for the provided preferences.
+            current_browser.quit()
+
+        binary = full_configuration["browser"]["binary"]
+        firefox_options = full_configuration["capabilities"]["moz:firefoxOptions"]
+        current_browser = Browser(
+            binary,
+            firefox_options,
+            use_bidi=use_bidi,
+            use_cdp=use_cdp,
+            extra_args=extra_args,
+            extra_prefs=extra_prefs,
+        )
+        current_browser.start()
+        return current_browser
+
+    yield _browser
+
+    # Stop firefox at the end of the test module.
+    if current_browser is not None:
+        current_browser.quit()
+        current_browser = None
+
+
+@pytest.fixture
+def custom_profile(configuration):
+    # Clone the known profile for automation preferences
+    firefox_options = configuration["capabilities"]["moz:firefoxOptions"]
+    _, profile_folder = firefox_options["args"]
+    profile = Profile.clone(profile_folder)
+
+    yield profile
+
+    profile.cleanup()
+
+
+@pytest.fixture
+def geckodriver(configuration):
+    """Start a geckodriver instance directly."""
+    driver = None
+
+    def _geckodriver(config=None, hostname=None, extra_args=None):
+        nonlocal driver
+
+        if config is None:
+            config = configuration
+
+        driver = Geckodriver(config, hostname, extra_args)
+        driver.start()
+
+        return driver
+
+    yield _geckodriver
+
+    if driver is not None:
+        driver.stop()
+
+
+class Browser:
+    def __init__(
+        self,
+        binary,
+        firefox_options,
+        use_bidi=False,
+        use_cdp=False,
+        extra_args=None,
+        extra_prefs=None,
+    ):
+        self.use_bidi = use_bidi
+        self.bidi_port_file = None
+        self.use_cdp = use_cdp
+        self.cdp_port_file = None
+        self.extra_args = extra_args
+        self.extra_prefs = extra_prefs
+
+        self.debugger_address = None
+        self.remote_agent_host = None
+        self.remote_agent_port = None
+
+        # Prepare temporary profile
+        _profile_arg, profile_folder = firefox_options["args"]
+        self.profile = Profile.clone(profile_folder)
+        if self.extra_prefs is not None:
+            self.profile.set_preferences(self.extra_prefs)
+
+        if use_cdp:
+            self.cdp_port_file = os.path.join(
+                self.profile.profile, "DevToolsActivePort"
+            )
+            with suppress(FileNotFoundError):
+                os.remove(self.cdp_port_file)
+        if use_bidi:
+            self.webdriver_bidi_file = os.path.join(
+                self.profile.profile, "WebDriverBiDiServer.json"
+            )
+            with suppress(FileNotFoundError):
+                os.remove(self.webdriver_bidi_file)
+
+        cmdargs = ["-no-remote"]
+        if self.use_bidi or self.use_cdp:
+            cmdargs.extend(["--remote-debugging-port", "0"])
+        if self.extra_args is not None:
+            cmdargs.extend(self.extra_args)
+        self.runner = FirefoxRunner(
+            binary=binary, profile=self.profile, cmdargs=cmdargs
+        )
+
+    @property
+    def is_running(self):
+        return self.runner.is_running()
+
+    def start(self):
+        # Start Firefox.
+        self.runner.start()
+
+        if self.use_bidi:
+            # Wait until the WebDriverBiDiServer.json file is ready
+            while not os.path.exists(self.webdriver_bidi_file):
+                time.sleep(0.1)
+
+            # Read the connection details from file
+            data = json.loads(open(self.webdriver_bidi_file).read())
+            self.remote_agent_host = data["ws_host"]
+            self.remote_agent_port = int(data["ws_port"])
+
+        if self.use_cdp:
+            # Wait until the DevToolsActivePort file is ready
+            while not os.path.exists(self.cdp_port_file):
+                time.sleep(0.1)
+
+            # Read the port if needed and the debugger address from the
+            # DevToolsActivePort file
+            lines = open(self.cdp_port_file).readlines()
+            assert len(lines) == 2
+
+            if self.remote_agent_port is None:
+                self.remote_agent_port = int(lines[0].strip())
+            self.debugger_address = lines[1].strip()
+
+    def quit(self, clean_profile=True):
+        if self.is_running:
+            self.runner.stop()
+            self.runner.cleanup()
+
+        if clean_profile:
+            self.profile.cleanup()
+
+
+class Geckodriver:
+    def __init__(self, configuration, hostname=None, extra_args=None):
+        self.config = configuration["webdriver"]
+        self.requested_capabilities = configuration["capabilities"]
+        self.hostname = hostname or configuration["host"]
+        self.extra_args = extra_args or []
+
+        self.command = None
+        self.proc = None
+        self.port = get_free_port()
+
+        capabilities = {"alwaysMatch": self.requested_capabilities}
+        self.session = webdriver.Session(
+            self.hostname, self.port, capabilities=capabilities
+        )
+
+    @property
+    def remote_agent_port(self):
+        webSocketUrl = self.session.capabilities.get("webSocketUrl")
+        assert webSocketUrl is not None
+
+        return urlparse(webSocketUrl).port
+
+    def start(self):
+        self.command = (
+            [self.config["binary"], "--port", str(self.port)]
+            + self.config["args"]
+            + self.extra_args
+        )
+
+        print(f"Running command: {' '.join(self.command)}")
+        self.proc = subprocess.Popen(self.command)
+
+        # Wait for the port to become ready
+        end_time = time.time() + 10
+        while time.time() < end_time:
+            returncode = self.proc.poll()
+            if returncode is not None:
+                raise ChildProcessError(
+                    f"geckodriver terminated with code {returncode}"
+                )
+            with socket.socket() as sock:
+                if sock.connect_ex((self.hostname, self.port)) == 0:
+                    break
+        else:
+            raise ConnectionRefusedError(
+                f"Failed to connect to geckodriver on {self.hostname}:{self.port}"
+            )
+
+        return self
+
+    def stop(self):
+        self.delete_session()
+
+        if self.proc:
+            self.proc.kill()
+
+    def new_session(self):
+        self.session.start()
+
+    def delete_session(self):
+        self.session.end()
diff --git a/testing/web-platform/mozilla/tests/webdriver/support/network.py b/testing/web-platform/mozilla/tests/webdriver/support/network.py
new file mode 100644
index 0000000000..25492ca5e5
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/webdriver/support/network.py
@@ -0,0 +1,78 @@
+import socket
+from http.client import HTTPConnection
+
+
+def websocket_request(
+    remote_agent_host, remote_agent_port, host=None, origin=None, path="/session"
+):
+    real_host = f"{remote_agent_host}:{remote_agent_port}"
+    url = f"http://{real_host}{path}"
+
+    conn = HTTPConnection(real_host)
+
+    skip_host = host is not None
+    conn.putrequest("GET", url, skip_host)
+
+    if host is not None:
+        conn.putheader("Host", host)
+
+    if origin is not None:
+        conn.putheader("Origin", origin)
+
+    conn.putheader("Connection", "upgrade")
+    conn.putheader("Upgrade", "websocket")
+    conn.putheader("Sec-WebSocket-Key", "dGhlIHNhbXBsZSBub25jZQ==")
+    conn.putheader("Sec-WebSocket-Version", "13")
+
+    conn.endheaders()
+
+    return conn.getresponse()
+
+
+def http_request(server_host, server_port, path="/status", host=None, origin=None):
+    url = f"http://{server_host}:{server_port}{path}"
+
+    conn = HTTPConnection(server_host, server_port)
+
+    custom_host = host is not None
+    conn.putrequest("GET", url, skip_host=custom_host)
+    if custom_host:
+        conn.putheader("Host", host)
+
+    if origin is not None:
+        conn.putheader("Origin", origin)
+
+    conn.endheaders()
+
+    return conn.getresponse()
+
+
+def get_free_port():
+    """Get a random unbound port"""
+    max_attempts = 10
+    err = None
+    for _ in range(max_attempts):
+        s = socket.socket()
+        try:
+            s.bind(("127.0.0.1", 0))
+        except OSError as e:
+            err = e
+            continue
+        else:
+            return s.getsockname()[1]
+        finally:
+            s.close()
+    if err is None:
+        err = Exception("Failed to get a free port")
+    raise err
+
+
+def get_host(port_type, hostname, server_port):
+    if port_type == "default_port":
+        return hostname
+    if port_type == "server_port":
+        return f"{hostname}:{server_port}"
+    if port_type == "wrong_port":
+        wrong_port = int(server_port) + 1
+        return f"{hostname}:{wrong_port}"
+    raise Exception(f"Unrecognised port_type {port_type}")
diff --git a/testing/web-platform/mozilla/tests/webgpu/chunked/1/cts.https.html b/testing/web-platform/mozilla/tests/webgpu/chunked/1/cts.https.html
new file mode 100644
index 0000000000..a651e43371
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/webgpu/chunked/1/cts.https.html
@@ -0,0 +1,59 @@
+
+
+
+
+WebGPU CTS
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
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+
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diff --git a/testing/web-platform/mozilla/tests/webgpu/chunked/10/cts.https.html b/testing/web-platform/mozilla/tests/webgpu/chunked/10/cts.https.html
new file mode 100644
index 0000000000..bb938734b0
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/webgpu/chunked/10/cts.https.html
@@ -0,0 +1,59 @@
+
+
+
+
+WebGPU CTS
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
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diff --git a/testing/web-platform/mozilla/tests/webgpu/chunked/11/cts.https.html b/testing/web-platform/mozilla/tests/webgpu/chunked/11/cts.https.html
new file mode 100644
index 0000000000..7e0ba911d2
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/webgpu/chunked/11/cts.https.html
@@ -0,0 +1,59 @@
+
+
+
+
+WebGPU CTS
+
+
+
+
+
+
+
+
+
+
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+
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diff --git a/testing/web-platform/mozilla/tests/webgpu/chunked/12/cts.https.html b/testing/web-platform/mozilla/tests/webgpu/chunked/12/cts.https.html
new file mode 100644
index 0000000000..b5a0044f96
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/webgpu/chunked/12/cts.https.html
@@ -0,0 +1,59 @@
+
+
+
+
+WebGPU CTS
+
+
+
+
+
+
+
+
+
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diff --git a/testing/web-platform/mozilla/tests/webgpu/chunked/13/cts.https.html b/testing/web-platform/mozilla/tests/webgpu/chunked/13/cts.https.html
new file mode 100644
index 0000000000..defa0b68a6
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/webgpu/chunked/13/cts.https.html
@@ -0,0 +1,59 @@
+
+
+
+
+WebGPU CTS
+
+
+
+
+
+
+
+
+
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+
+
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diff --git a/testing/web-platform/mozilla/tests/webgpu/chunked/14/cts.https.html b/testing/web-platform/mozilla/tests/webgpu/chunked/14/cts.https.html
new file mode 100644
index 0000000000..8b785ba326
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/webgpu/chunked/14/cts.https.html
@@ -0,0 +1,59 @@
+
+
+
+
+WebGPU CTS
+
+
+
+
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diff --git a/testing/web-platform/mozilla/tests/webgpu/chunked/15/cts.https.html b/testing/web-platform/mozilla/tests/webgpu/chunked/15/cts.https.html
new file mode 100644
index 0000000000..9daf585acb
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/webgpu/chunked/15/cts.https.html
@@ -0,0 +1,59 @@
+
+
+
+
+WebGPU CTS
+
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diff --git a/testing/web-platform/mozilla/tests/webgpu/chunked/16/cts.https.html b/testing/web-platform/mozilla/tests/webgpu/chunked/16/cts.https.html
new file mode 100644
index 0000000000..81ca6c2d5e
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/webgpu/chunked/16/cts.https.html
@@ -0,0 +1,59 @@
+
+
+
+
+WebGPU CTS
+
+
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diff --git a/testing/web-platform/mozilla/tests/webgpu/chunked/17/cts.https.html b/testing/web-platform/mozilla/tests/webgpu/chunked/17/cts.https.html
new file mode 100644
index 0000000000..2839312856
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/webgpu/chunked/17/cts.https.html
@@ -0,0 +1,59 @@
+
+
+
+
+WebGPU CTS
+
+
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diff --git a/testing/web-platform/mozilla/tests/webgpu/chunked/18/cts.https.html b/testing/web-platform/mozilla/tests/webgpu/chunked/18/cts.https.html
new file mode 100644
index 0000000000..0b87d0004a
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/webgpu/chunked/18/cts.https.html
@@ -0,0 +1,59 @@
+
+
+
+
+WebGPU CTS
+
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diff --git a/testing/web-platform/mozilla/tests/webgpu/chunked/19/cts.https.html b/testing/web-platform/mozilla/tests/webgpu/chunked/19/cts.https.html
new file mode 100644
index 0000000000..7fd8995cdd
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/webgpu/chunked/19/cts.https.html
@@ -0,0 +1,59 @@
+
+
+
+
+WebGPU CTS
+
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diff --git a/testing/web-platform/mozilla/tests/webgpu/chunked/2/cts.https.html b/testing/web-platform/mozilla/tests/webgpu/chunked/2/cts.https.html
new file mode 100644
index 0000000000..89410c8078
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/webgpu/chunked/2/cts.https.html
@@ -0,0 +1,59 @@
+
+
+
+
+WebGPU CTS
+
+
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diff --git a/testing/web-platform/mozilla/tests/webgpu/chunked/20/cts.https.html b/testing/web-platform/mozilla/tests/webgpu/chunked/20/cts.https.html
new file mode 100644
index 0000000000..eb21d5a792
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/webgpu/chunked/20/cts.https.html
@@ -0,0 +1,59 @@
+
+
+
+
+WebGPU CTS
+
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diff --git a/testing/web-platform/mozilla/tests/webgpu/chunked/21/cts.https.html b/testing/web-platform/mozilla/tests/webgpu/chunked/21/cts.https.html
new file mode 100644
index 0000000000..d2480074f9
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/webgpu/chunked/21/cts.https.html
@@ -0,0 +1,59 @@
+
+
+
+
+WebGPU CTS
+
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diff --git a/testing/web-platform/mozilla/tests/webgpu/chunked/22/cts.https.html b/testing/web-platform/mozilla/tests/webgpu/chunked/22/cts.https.html
new file mode 100644
index 0000000000..b7d9a0443d
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/webgpu/chunked/22/cts.https.html
@@ -0,0 +1,59 @@
+
+
+
+
+WebGPU CTS
+
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diff --git a/testing/web-platform/mozilla/tests/webgpu/chunked/23/cts.https.html b/testing/web-platform/mozilla/tests/webgpu/chunked/23/cts.https.html
new file mode 100644
index 0000000000..f2bd7c06ce
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/webgpu/chunked/23/cts.https.html
@@ -0,0 +1,59 @@
+
+
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+WebGPU CTS
+
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diff --git a/testing/web-platform/mozilla/tests/webgpu/chunked/24/cts.https.html b/testing/web-platform/mozilla/tests/webgpu/chunked/24/cts.https.html
new file mode 100644
index 0000000000..f524b4e131
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/webgpu/chunked/24/cts.https.html
@@ -0,0 +1,59 @@
+
+
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+WebGPU CTS
+
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diff --git a/testing/web-platform/mozilla/tests/webgpu/chunked/25/cts.https.html b/testing/web-platform/mozilla/tests/webgpu/chunked/25/cts.https.html
new file mode 100644
index 0000000000..74ea4bb85f
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/webgpu/chunked/25/cts.https.html
@@ -0,0 +1,59 @@
+
+
+
+
+WebGPU CTS
+
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diff --git a/testing/web-platform/mozilla/tests/webgpu/chunked/26/cts.https.html b/testing/web-platform/mozilla/tests/webgpu/chunked/26/cts.https.html
new file mode 100644
index 0000000000..e4db92b95a
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/webgpu/chunked/26/cts.https.html
@@ -0,0 +1,59 @@
+
+
+
+
+WebGPU CTS
+
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diff --git a/testing/web-platform/mozilla/tests/webgpu/chunked/27/cts.https.html b/testing/web-platform/mozilla/tests/webgpu/chunked/27/cts.https.html
new file mode 100644
index 0000000000..ee9bf405f7
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/webgpu/chunked/27/cts.https.html
@@ -0,0 +1,59 @@
+
+
+
+
+WebGPU CTS
+
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diff --git a/testing/web-platform/mozilla/tests/webgpu/chunked/28/cts.https.html b/testing/web-platform/mozilla/tests/webgpu/chunked/28/cts.https.html
new file mode 100644
index 0000000000..1e73abddfd
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/webgpu/chunked/28/cts.https.html
@@ -0,0 +1,59 @@
+
+
+
+
+WebGPU CTS
+
+
+
+
+
+
+
+
+
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+
+
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diff --git a/testing/web-platform/mozilla/tests/webgpu/chunked/29/cts.https.html b/testing/web-platform/mozilla/tests/webgpu/chunked/29/cts.https.html
new file mode 100644
index 0000000000..82a166b876
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/webgpu/chunked/29/cts.https.html
@@ -0,0 +1,59 @@
+
+
+
+
+WebGPU CTS
+
+
+
+
+
+
+
+
+
+
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+
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+
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+
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diff --git a/testing/web-platform/mozilla/tests/webgpu/chunked/3/cts.https.html b/testing/web-platform/mozilla/tests/webgpu/chunked/3/cts.https.html
new file mode 100644
index 0000000000..c548ceb9da
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/webgpu/chunked/3/cts.https.html
@@ -0,0 +1,59 @@
+
+
+
+
+WebGPU CTS
+
+
+
+
+
+
+
+
+
+
+
+
+
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+
+
+
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+
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diff --git a/testing/web-platform/mozilla/tests/webgpu/chunked/30/cts.https.html b/testing/web-platform/mozilla/tests/webgpu/chunked/30/cts.https.html
new file mode 100644
index 0000000000..17fb900ab5
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/webgpu/chunked/30/cts.https.html
@@ -0,0 +1,59 @@
+
+
+
+
+WebGPU CTS
+
+
+
+
+
+
+
+
+
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+
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+
+
+
+
+
+
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+
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diff --git a/testing/web-platform/mozilla/tests/webgpu/chunked/31/cts.https.html b/testing/web-platform/mozilla/tests/webgpu/chunked/31/cts.https.html
new file mode 100644
index 0000000000..f91e1a9f6d
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/webgpu/chunked/31/cts.https.html
@@ -0,0 +1,59 @@
+
+
+
+
+WebGPU CTS
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
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+
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diff --git a/testing/web-platform/mozilla/tests/webgpu/chunked/32/cts.https.html b/testing/web-platform/mozilla/tests/webgpu/chunked/32/cts.https.html
new file mode 100644
index 0000000000..3ad2c39a44
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/webgpu/chunked/32/cts.https.html
@@ -0,0 +1,59 @@
+
+
+
+
+WebGPU CTS
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
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+
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diff --git a/testing/web-platform/mozilla/tests/webgpu/chunked/33/cts.https.html b/testing/web-platform/mozilla/tests/webgpu/chunked/33/cts.https.html
new file mode 100644
index 0000000000..2d89a48d30
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/webgpu/chunked/33/cts.https.html
@@ -0,0 +1,59 @@
+
+
+
+
+WebGPU CTS
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
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+
+
diff --git a/testing/web-platform/mozilla/tests/webgpu/chunked/34/cts.https.html b/testing/web-platform/mozilla/tests/webgpu/chunked/34/cts.https.html
new file mode 100644
index 0000000000..26118bcce3
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/webgpu/chunked/34/cts.https.html
@@ -0,0 +1,59 @@
+
+
+
+
+WebGPU CTS
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
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+
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diff --git a/testing/web-platform/mozilla/tests/webgpu/chunked/35/cts.https.html b/testing/web-platform/mozilla/tests/webgpu/chunked/35/cts.https.html
new file mode 100644
index 0000000000..2692ffa37e
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/webgpu/chunked/35/cts.https.html
@@ -0,0 +1,59 @@
+
+
+
+
+WebGPU CTS
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
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+
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diff --git a/testing/web-platform/mozilla/tests/webgpu/chunked/36/cts.https.html b/testing/web-platform/mozilla/tests/webgpu/chunked/36/cts.https.html
new file mode 100644
index 0000000000..79277d99e1
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/webgpu/chunked/36/cts.https.html
@@ -0,0 +1,59 @@
+
+
+
+
+WebGPU CTS
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
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+
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diff --git a/testing/web-platform/mozilla/tests/webgpu/chunked/37/cts.https.html b/testing/web-platform/mozilla/tests/webgpu/chunked/37/cts.https.html
new file mode 100644
index 0000000000..467d037984
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/webgpu/chunked/37/cts.https.html
@@ -0,0 +1,59 @@
+
+
+
+
+WebGPU CTS
+
+
+
+
+
+
+
+
+
+
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+
+
+
+
+
+
+
+
+
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diff --git a/testing/web-platform/mozilla/tests/webgpu/chunked/38/cts.https.html b/testing/web-platform/mozilla/tests/webgpu/chunked/38/cts.https.html
new file mode 100644
index 0000000000..e80e64d29b
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/webgpu/chunked/38/cts.https.html
@@ -0,0 +1,59 @@
+
+
+
+
+WebGPU CTS
+
+
+
+
+
+
+
+
+
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+
+
+
+
+
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diff --git a/testing/web-platform/mozilla/tests/webgpu/chunked/39/cts.https.html b/testing/web-platform/mozilla/tests/webgpu/chunked/39/cts.https.html
new file mode 100644
index 0000000000..b46895a8f9
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/webgpu/chunked/39/cts.https.html
@@ -0,0 +1,59 @@
+
+
+
+
+WebGPU CTS
+
+
+
+
+
+
+
+
+
+
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+
+
+
+
+
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+
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diff --git a/testing/web-platform/mozilla/tests/webgpu/chunked/4/cts.https.html b/testing/web-platform/mozilla/tests/webgpu/chunked/4/cts.https.html
new file mode 100644
index 0000000000..df1890201d
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/webgpu/chunked/4/cts.https.html
@@ -0,0 +1,59 @@
+
+
+
+
+WebGPU CTS
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
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+
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+
diff --git a/testing/web-platform/mozilla/tests/webgpu/chunked/40/cts.https.html b/testing/web-platform/mozilla/tests/webgpu/chunked/40/cts.https.html
new file mode 100644
index 0000000000..c28d043dba
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/webgpu/chunked/40/cts.https.html
@@ -0,0 +1,59 @@
+
+
+
+
+WebGPU CTS
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
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+
+
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diff --git a/testing/web-platform/mozilla/tests/webgpu/chunked/41/cts.https.html b/testing/web-platform/mozilla/tests/webgpu/chunked/41/cts.https.html
new file mode 100644
index 0000000000..13eff1789f
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/webgpu/chunked/41/cts.https.html
@@ -0,0 +1,59 @@
+
+
+
+
+WebGPU CTS
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
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+
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+
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+
+
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diff --git a/testing/web-platform/mozilla/tests/webgpu/chunked/42/cts.https.html b/testing/web-platform/mozilla/tests/webgpu/chunked/42/cts.https.html
new file mode 100644
index 0000000000..c0bffe766a
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/webgpu/chunked/42/cts.https.html
@@ -0,0 +1,59 @@
+
+
+
+
+WebGPU CTS
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
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+
+
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+
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diff --git a/testing/web-platform/mozilla/tests/webgpu/chunked/43/cts.https.html b/testing/web-platform/mozilla/tests/webgpu/chunked/43/cts.https.html
new file mode 100644
index 0000000000..30eb586b56
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/webgpu/chunked/43/cts.https.html
@@ -0,0 +1,59 @@
+
+
+
+
+WebGPU CTS
+
+
+
+
+
+
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+
+
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+
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diff --git a/testing/web-platform/mozilla/tests/webgpu/chunked/44/cts.https.html b/testing/web-platform/mozilla/tests/webgpu/chunked/44/cts.https.html
new file mode 100644
index 0000000000..d87d4661ad
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/webgpu/chunked/44/cts.https.html
@@ -0,0 +1,59 @@
+
+
+
+
+WebGPU CTS
+
+
+
+
+
+
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+
+
+
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+
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+
+
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+
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+
+
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+
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diff --git a/testing/web-platform/mozilla/tests/webgpu/chunked/45/cts.https.html b/testing/web-platform/mozilla/tests/webgpu/chunked/45/cts.https.html
new file mode 100644
index 0000000000..aa8fddb4f1
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/webgpu/chunked/45/cts.https.html
@@ -0,0 +1,59 @@
+
+
+
+
+WebGPU CTS
+
+
+
+
+
+
+
+
+
+
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+
+
+
+
+
+
+
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+
+
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diff --git a/testing/web-platform/mozilla/tests/webgpu/chunked/46/cts.https.html b/testing/web-platform/mozilla/tests/webgpu/chunked/46/cts.https.html
new file mode 100644
index 0000000000..048c73733e
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/webgpu/chunked/46/cts.https.html
@@ -0,0 +1,59 @@
+
+
+
+
+WebGPU CTS
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
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+
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+
diff --git a/testing/web-platform/mozilla/tests/webgpu/chunked/47/cts.https.html b/testing/web-platform/mozilla/tests/webgpu/chunked/47/cts.https.html
new file mode 100644
index 0000000000..a1455d2756
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/webgpu/chunked/47/cts.https.html
@@ -0,0 +1,59 @@
+
+
+
+
+WebGPU CTS
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
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+
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+
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+
+
+
diff --git a/testing/web-platform/mozilla/tests/webgpu/chunked/48/cts.https.html b/testing/web-platform/mozilla/tests/webgpu/chunked/48/cts.https.html
new file mode 100644
index 0000000000..0ee13cb4fd
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/webgpu/chunked/48/cts.https.html
@@ -0,0 +1,59 @@
+
+
+
+
+WebGPU CTS
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
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+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/mozilla/tests/webgpu/chunked/49/cts.https.html b/testing/web-platform/mozilla/tests/webgpu/chunked/49/cts.https.html
new file mode 100644
index 0000000000..94244c93b4
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/webgpu/chunked/49/cts.https.html
@@ -0,0 +1,59 @@
+
+
+
+
+WebGPU CTS
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/mozilla/tests/webgpu/chunked/5/cts.https.html b/testing/web-platform/mozilla/tests/webgpu/chunked/5/cts.https.html
new file mode 100644
index 0000000000..9df144950d
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/webgpu/chunked/5/cts.https.html
@@ -0,0 +1,59 @@
+
+
+
+
+WebGPU CTS
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/mozilla/tests/webgpu/chunked/50/cts.https.html b/testing/web-platform/mozilla/tests/webgpu/chunked/50/cts.https.html
new file mode 100644
index 0000000000..66e37df757
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/webgpu/chunked/50/cts.https.html
@@ -0,0 +1,59 @@
+
+
+
+
+WebGPU CTS
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
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+
+
+
diff --git a/testing/web-platform/mozilla/tests/webgpu/chunked/51/cts.https.html b/testing/web-platform/mozilla/tests/webgpu/chunked/51/cts.https.html
new file mode 100644
index 0000000000..db8ad7c5cc
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/webgpu/chunked/51/cts.https.html
@@ -0,0 +1,58 @@
+
+
+
+
+WebGPU CTS
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
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+
+
+
+
+
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+
+
+
diff --git a/testing/web-platform/mozilla/tests/webgpu/chunked/6/cts.https.html b/testing/web-platform/mozilla/tests/webgpu/chunked/6/cts.https.html
new file mode 100644
index 0000000000..d6d9a9c0c1
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/webgpu/chunked/6/cts.https.html
@@ -0,0 +1,59 @@
+
+
+
+
+WebGPU CTS
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/mozilla/tests/webgpu/chunked/7/cts.https.html b/testing/web-platform/mozilla/tests/webgpu/chunked/7/cts.https.html
new file mode 100644
index 0000000000..f1f9e5ec02
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/webgpu/chunked/7/cts.https.html
@@ -0,0 +1,59 @@
+
+
+
+
+WebGPU CTS
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
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+
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+
+
+
+
diff --git a/testing/web-platform/mozilla/tests/webgpu/chunked/8/cts.https.html b/testing/web-platform/mozilla/tests/webgpu/chunked/8/cts.https.html
new file mode 100644
index 0000000000..b23ee54868
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/webgpu/chunked/8/cts.https.html
@@ -0,0 +1,59 @@
+
+
+
+
+WebGPU CTS
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/mozilla/tests/webgpu/chunked/9/cts.https.html b/testing/web-platform/mozilla/tests/webgpu/chunked/9/cts.https.html
new file mode 100644
index 0000000000..d0ebb3eae6
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/webgpu/chunked/9/cts.https.html
@@ -0,0 +1,59 @@
+
+
+
+
+WebGPU CTS
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/mozilla/tests/webgpu/common/framework/data_cache.js b/testing/web-platform/mozilla/tests/webgpu/common/framework/data_cache.js
new file mode 100644
index 0000000000..e426ffbbc9
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/webgpu/common/framework/data_cache.js
@@ -0,0 +1,89 @@
+/**
+ * AUTO-GENERATED - DO NOT EDIT. Source: https://github.com/gpuweb/cts
+ **/
+
+/** DataCache is an interface to a data store used to hold cached data */
+export class DataCache {
+  /** setDataStore() sets the backing data store used by the data cache */
+  setStore(dataStore) {
+    this.dataStore = dataStore;
+  }
+
+  /** setDebugLogger() sets the verbose logger */
+  setDebugLogger(logger) {
+    this.debugLogger = logger;
+  }
+
+  /**
+   * fetch() retrieves cacheable data from the data cache, first checking the
+   * in-memory cache, then the data store (if specified), then resorting to
+   * building the data and storing it in the cache.
+   */
+  async fetch(cacheable) {
+    // First check the in-memory cache
+    let data = this.cache.get(cacheable.path);
+    if (data !== undefined) {
+      this.log('in-memory cache hit');
+      return Promise.resolve(data);
+    }
+    this.log('in-memory cache miss');
+    // In in-memory cache miss.
+    // Next, try the data store.
+    if (this.dataStore !== null && !this.unavailableFiles.has(cacheable.path)) {
+      let serialized;
+      try {
+        serialized = await this.dataStore.load(cacheable.path);
+        this.log('loaded serialized');
+      } catch (err) {
+        // not found in data store
+        this.log(`failed to load (${cacheable.path}): ${err}`);
+        this.unavailableFiles.add(cacheable.path);
+      }
+      if (serialized !== undefined) {
+        this.log(`deserializing`);
+        data = cacheable.deserialize(serialized);
+        this.cache.set(cacheable.path, data);
+        return data;
+      }
+    }
+    // Not found anywhere. Build the data, and cache for future lookup.
+    this.log(`cache: building (${cacheable.path})`);
+    data = await cacheable.build();
+    this.cache.set(cacheable.path, data);
+    return data;
+  }
+
+  log(msg) {
+    if (this.debugLogger !== null) {
+      this.debugLogger(`DataCache: ${msg}`);
+    }
+  }
+
+  cache = new Map();
+  unavailableFiles = new Set();
+  dataStore = null;
+  debugLogger = null;
+}
+
+/** The data cache */
+export const dataCache = new DataCache();
+
+/** true if the current process is building the cache */
+let isBuildingDataCache = false;
+
+/** @returns true if the data cache is currently being built */
+export function getIsBuildingDataCache() {
+  return isBuildingDataCache;
+}
+
+/** Sets whether the data cache is currently being built */
+export function setIsBuildingDataCache(value = true) {
+  isBuildingDataCache = value;
+}
+
+/**
+ * Cacheable is the interface to something that can be stored into the
+ * DataCache.
+ * The 'npm run gen_cache' tool will look for module-scope variables of this
+ * interface, with the name `d`.
+ */
diff --git a/testing/web-platform/mozilla/tests/webgpu/common/framework/fixture.js b/testing/web-platform/mozilla/tests/webgpu/common/framework/fixture.js
new file mode 100644
index 0000000000..1611e9a742
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/webgpu/common/framework/fixture.js
@@ -0,0 +1,310 @@
+/**
+ * AUTO-GENERATED - DO NOT EDIT. Source: https://github.com/gpuweb/cts
+ **/ import { assert, unreachable } from '../util/util.js';
+
+export class SkipTestCase extends Error {}
+export class UnexpectedPassError extends Error {}
+
+export { TestCaseRecorder } from '../internal/logging/test_case_recorder.js';
+
+/** The fully-general type for params passed to a test function invocation. */
+
+export class SubcaseBatchState {
+  constructor(params) {
+    this._params = params;
+  }
+
+  /**
+   * Returns the case parameters for this test fixture shared state. Subcase params
+   * are not included.
+   */
+  get params() {
+    return this._params;
+  }
+
+  /**
+   * Runs before the `.before()` function.
+   * @internal MAINTENANCE_TODO: Make this not visible to test code?
+   */
+  async init() {}
+  /**
+   * Runs between the `.before()` function and the subcases.
+   * @internal MAINTENANCE_TODO: Make this not visible to test code?
+   */
+  async postInit() {}
+  /**
+   * Runs after all subcases finish.
+   * @internal MAINTENANCE_TODO: Make this not visible to test code?
+   */
+  async finalize() {}
+}
+
+/**
+ * A Fixture is a class used to instantiate each test sub/case at run time.
+ * A new instance of the Fixture is created for every single test subcase
+ * (i.e. every time the test function is run).
+ */
+export class Fixture {
+  /**
+   * Interface for recording logs and test status.
+   *
+   * @internal
+   */
+
+  eventualExpectations = [];
+  numOutstandingAsyncExpectations = 0;
+  objectsToCleanUp = [];
+
+  static MakeSharedState(params) {
+    return new SubcaseBatchState(params);
+  }
+
+  /** @internal */
+  constructor(sharedState, rec, params) {
+    this._sharedState = sharedState;
+    this.rec = rec;
+    this._params = params;
+  }
+
+  /**
+   * Returns the (case+subcase) parameters for this test function invocation.
+   */
+  get params() {
+    return this._params;
+  }
+
+  /**
+   * Gets the test fixture's shared state. This object is shared between subcases
+   * within the same testcase.
+   */
+  get sharedState() {
+    return this._sharedState;
+  }
+
+  /**
+   * Override this to do additional pre-test-function work in a derived fixture.
+   * This has to be a member function instead of an async `createFixture` function, because
+   * we need to be able to ergonomically override it in subclasses.
+   *
+   * @internal MAINTENANCE_TODO: Make this not visible to test code?
+   */
+  async init() {}
+
+  /**
+   * Override this to do additional post-test-function work in a derived fixture.
+   *
+   * Called even if init was unsuccessful.
+   *
+   * @internal MAINTENANCE_TODO: Make this not visible to test code?
+   */
+  async finalize() {
+    assert(
+      this.numOutstandingAsyncExpectations === 0,
+      'there were outstanding immediateAsyncExpectations (e.g. expectUncapturedError) at the end of the test'
+    );
+
+    // Loop to exhaust the eventualExpectations in case they chain off each other.
+    while (this.eventualExpectations.length) {
+      const p = this.eventualExpectations.shift();
+      try {
+        await p;
+      } catch (ex) {
+        this.rec.threw(ex);
+      }
+    }
+
+    // And clean up any objects now that they're done being used.
+    for (const o of this.objectsToCleanUp) {
+      if ('getExtension' in o) {
+        const WEBGL_lose_context = o.getExtension('WEBGL_lose_context');
+        if (WEBGL_lose_context) WEBGL_lose_context.loseContext();
+      } else if ('destroy' in o) {
+        o.destroy();
+      } else {
+        o.close();
+      }
+    }
+  }
+
+  /**
+   * Tracks an object to be cleaned up after the test finishes.
+   *
+   * MAINTENANCE_TODO: Use this in more places. (Will be easier once .destroy() is allowed on
+   * invalid objects.)
+   */
+  trackForCleanup(o) {
+    this.objectsToCleanUp.push(o);
+    return o;
+  }
+
+  /** Tracks an object, if it's destroyable, to be cleaned up after the test finishes. */
+  tryTrackForCleanup(o) {
+    if (typeof o === 'object' && o !== null) {
+      if (
+        'destroy' in o ||
+        'close' in o ||
+        o instanceof WebGLRenderingContext ||
+        o instanceof WebGL2RenderingContext
+      ) {
+        this.objectsToCleanUp.push(o);
+      }
+    }
+    return o;
+  }
+
+  /** Log a debug message. */
+  debug(msg) {
+    this.rec.debug(new Error(msg));
+  }
+
+  /** Throws an exception marking the subcase as skipped. */
+  skip(msg) {
+    throw new SkipTestCase(msg);
+  }
+
+  /** Log a warning and increase the result status to "Warn". */
+  warn(msg) {
+    this.rec.warn(new Error(msg));
+  }
+
+  /** Log an error and increase the result status to "ExpectFailed". */
+  fail(msg) {
+    this.rec.expectationFailed(new Error(msg));
+  }
+
+  /**
+   * Wraps an async function. Tracks its status to fail if the test tries to report a test status
+   * before the async work has finished.
+   */
+  async immediateAsyncExpectation(fn) {
+    this.numOutstandingAsyncExpectations++;
+    const ret = await fn();
+    this.numOutstandingAsyncExpectations--;
+    return ret;
+  }
+
+  /**
+   * Wraps an async function, passing it an `Error` object recording the original stack trace.
+   * The async work will be implicitly waited upon before reporting a test status.
+   */
+  eventualAsyncExpectation(fn) {
+    const promise = fn(new Error());
+    this.eventualExpectations.push(promise);
+  }
+
+  expectErrorValue(expectedError, ex, niceStack) {
+    if (!(ex instanceof Error)) {
+      niceStack.message = `THREW non-error value, of type ${typeof ex}: ${ex}`;
+      this.rec.expectationFailed(niceStack);
+      return;
+    }
+    const actualName = ex.name;
+    if (expectedError !== true && actualName !== expectedError) {
+      niceStack.message = `THREW ${actualName}, instead of ${expectedError}: ${ex}`;
+      this.rec.expectationFailed(niceStack);
+    } else {
+      niceStack.message = `OK: threw ${actualName}: ${ex.message}`;
+      this.rec.debug(niceStack);
+    }
+  }
+
+  /** Expect that the provided promise resolves (fulfills). */
+  shouldResolve(p, msg) {
+    this.eventualAsyncExpectation(async niceStack => {
+      const m = msg ? ': ' + msg : '';
+      try {
+        await p;
+        niceStack.message = 'resolved as expected' + m;
+      } catch (ex) {
+        niceStack.message = `REJECTED${m}`;
+        if (ex instanceof Error) {
+          niceStack.message += '\n' + ex.message;
+        }
+        this.rec.expectationFailed(niceStack);
+      }
+    });
+  }
+
+  /** Expect that the provided promise rejects, with the provided exception name. */
+  shouldReject(expectedName, p, msg) {
+    this.eventualAsyncExpectation(async niceStack => {
+      const m = msg ? ': ' + msg : '';
+      try {
+        await p;
+        niceStack.message = 'DID NOT REJECT' + m;
+        this.rec.expectationFailed(niceStack);
+      } catch (ex) {
+        niceStack.message = 'rejected as expected' + m;
+        this.expectErrorValue(expectedName, ex, niceStack);
+      }
+    });
+  }
+
+  /**
+   * Expect that the provided function throws.
+   * If an `expectedName` is provided, expect that the throw exception has that name.
+   */
+  shouldThrow(expectedError, fn, msg) {
+    const m = msg ? ': ' + msg : '';
+    try {
+      fn();
+      if (expectedError === false) {
+        this.rec.debug(new Error('did not throw, as expected' + m));
+      } else {
+        this.rec.expectationFailed(new Error('unexpectedly did not throw' + m));
+      }
+    } catch (ex) {
+      if (expectedError === false) {
+        this.rec.expectationFailed(new Error('threw unexpectedly' + m));
+      } else {
+        this.expectErrorValue(expectedError, ex, new Error(m));
+      }
+    }
+  }
+
+  /** Expect that a condition is true. */
+  expect(cond, msg) {
+    if (cond) {
+      const m = msg ? ': ' + msg : '';
+      this.rec.debug(new Error('expect OK' + m));
+    } else {
+      this.rec.expectationFailed(new Error(msg));
+    }
+    return cond;
+  }
+
+  /**
+   * If the argument is an `Error`, fail (or warn). If it's `undefined`, no-op.
+   * If the argument is an array, apply the above behavior on each of elements.
+   */
+  expectOK(error, { mode = 'fail', niceStack } = {}) {
+    const handleError = error => {
+      if (error instanceof Error) {
+        if (niceStack) {
+          error.stack = niceStack.stack;
+        }
+        if (mode === 'fail') {
+          this.rec.expectationFailed(error);
+        } else if (mode === 'warn') {
+          this.rec.warn(error);
+        } else {
+          unreachable();
+        }
+      }
+    };
+
+    if (Array.isArray(error)) {
+      for (const e of error) {
+        handleError(e);
+      }
+    } else {
+      handleError(error);
+    }
+  }
+
+  eventualExpectOK(error, { mode = 'fail' } = {}) {
+    this.eventualAsyncExpectation(async niceStack => {
+      this.expectOK(await error, { mode, niceStack });
+    });
+  }
+}
diff --git a/testing/web-platform/mozilla/tests/webgpu/common/framework/params_builder.js b/testing/web-platform/mozilla/tests/webgpu/common/framework/params_builder.js
new file mode 100644
index 0000000000..787911f964
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/webgpu/common/framework/params_builder.js
@@ -0,0 +1,213 @@
+/**
+ * AUTO-GENERATED - DO NOT EDIT. Source: https://github.com/gpuweb/cts
+ **/ import { mergeParams } from '../internal/params_utils.js';
+import { stringifyPublicParams } from '../internal/query/stringify_params.js';
+import { assert, mapLazy } from '../util/util.js';
+
+// ================================================================
+// "Public" ParamsBuilder API / Documentation
+// ================================================================
+
+/**
+ * Provides doc comments for the methods of CaseParamsBuilder and SubcaseParamsBuilder.
+ * (Also enforces rough interface match between them.)
+ */
+
+/**
+ * Base class for `CaseParamsBuilder` and `SubcaseParamsBuilder`.
+ */
+export class ParamsBuilderBase {
+  constructor(cases) {
+    this.cases = cases;
+  }
+
+  /**
+   * Hidden from test files. Use `builderIterateCasesWithSubcases` to access this.
+   */
+}
+
+/**
+ * Calls the (normally hidden) `iterateCasesWithSubcases()` method.
+ */
+export function builderIterateCasesWithSubcases(builder) {
+  return builder.iterateCasesWithSubcases();
+}
+
+/**
+ * Builder for combinatorial test **case** parameters.
+ *
+ * CaseParamsBuilder is immutable. Each method call returns a new, immutable object,
+ * modifying the list of cases according to the method called.
+ *
+ * This means, for example, that the `unit` passed into `TestBuilder.params()` can be reused.
+ */
+export class CaseParamsBuilder extends ParamsBuilderBase {
+  *iterateCasesWithSubcases() {
+    for (const a of this.cases()) {
+      yield [a, undefined];
+    }
+  }
+
+  [Symbol.iterator]() {
+    return this.cases();
+  }
+
+  /** @inheritDoc */
+  expandWithParams(expander) {
+    const newGenerator = expanderGenerator(this.cases, expander);
+    return new CaseParamsBuilder(() => newGenerator({}));
+  }
+
+  /** @inheritDoc */
+  expand(key, expander) {
+    return this.expandWithParams(function* (p) {
+      for (const value of expander(p)) {
+        yield { [key]: value };
+      }
+    });
+  }
+
+  /** @inheritDoc */
+  combineWithParams(newParams) {
+    assertNotGenerator(newParams);
+    const seenValues = new Set();
+    for (const params of newParams) {
+      const paramsStr = stringifyPublicParams(params);
+      assert(!seenValues.has(paramsStr), `Duplicate entry in combine[WithParams]: ${paramsStr}`);
+      seenValues.add(paramsStr);
+    }
+
+    return this.expandWithParams(() => newParams);
+  }
+
+  /** @inheritDoc */
+  combine(key, values) {
+    assertNotGenerator(values);
+    const mapped = mapLazy(values, v => ({ [key]: v }));
+    return this.combineWithParams(mapped);
+  }
+
+  /** @inheritDoc */
+  filter(pred) {
+    const newGenerator = filterGenerator(this.cases, pred);
+    return new CaseParamsBuilder(() => newGenerator({}));
+  }
+
+  /** @inheritDoc */
+  unless(pred) {
+    return this.filter(x => !pred(x));
+  }
+
+  /**
+   * "Finalize" the list of cases and begin defining subcases.
+   * Returns a new SubcaseParamsBuilder. Methods called on SubcaseParamsBuilder
+   * generate new subcases instead of new cases.
+   */
+  beginSubcases() {
+    return new SubcaseParamsBuilder(
+      () => this.cases(),
+      function* () {
+        yield {};
+      }
+    );
+  }
+}
+
+/**
+ * The unit CaseParamsBuilder, representing a single case with no params: `[ {} ]`.
+ *
+ * `punit` is passed to every `.params()`/`.paramsSubcasesOnly()` call, so `kUnitCaseParamsBuilder`
+ * is only explicitly needed if constructing a ParamsBuilder outside of a test builder.
+ */
+export const kUnitCaseParamsBuilder = new CaseParamsBuilder(function* () {
+  yield {};
+});
+
+/**
+ * Builder for combinatorial test _subcase_ parameters.
+ *
+ * SubcaseParamsBuilder is immutable. Each method call returns a new, immutable object,
+ * modifying the list of subcases according to the method called.
+ */
+export class SubcaseParamsBuilder extends ParamsBuilderBase {
+  constructor(cases, generator) {
+    super(cases);
+    this.subcases = generator;
+  }
+
+  *iterateCasesWithSubcases() {
+    for (const caseP of this.cases()) {
+      const subcases = Array.from(this.subcases(caseP));
+      if (subcases.length) {
+        yield [caseP, subcases];
+      }
+    }
+  }
+
+  /** @inheritDoc */
+  expandWithParams(expander) {
+    return new SubcaseParamsBuilder(this.cases, expanderGenerator(this.subcases, expander));
+  }
+
+  /** @inheritDoc */
+  expand(key, expander) {
+    return this.expandWithParams(function* (p) {
+      for (const value of expander(p)) {
+        // TypeScript doesn't know here that NewPKey is always a single literal string type.
+        yield { [key]: value };
+      }
+    });
+  }
+
+  /** @inheritDoc */
+  combineWithParams(newParams) {
+    assertNotGenerator(newParams);
+    return this.expandWithParams(() => newParams);
+  }
+
+  /** @inheritDoc */
+  combine(key, values) {
+    assertNotGenerator(values);
+    return this.expand(key, () => values);
+  }
+
+  /** @inheritDoc */
+  filter(pred) {
+    return new SubcaseParamsBuilder(this.cases, filterGenerator(this.subcases, pred));
+  }
+
+  /** @inheritDoc */
+  unless(pred) {
+    return this.filter(x => !pred(x));
+  }
+}
+
+function expanderGenerator(baseGenerator, expander) {
+  return function* (base) {
+    for (const a of baseGenerator(base)) {
+      for (const b of expander(mergeParams(base, a))) {
+        yield mergeParams(a, b);
+      }
+    }
+  };
+}
+
+function filterGenerator(baseGenerator, pred) {
+  return function* (base) {
+    for (const a of baseGenerator(base)) {
+      if (pred(mergeParams(base, a))) {
+        yield a;
+      }
+    }
+  };
+}
+
+/** Assert an object is not a Generator (a thing returned from a generator function). */
+function assertNotGenerator(x) {
+  if ('constructor' in x) {
+    assert(
+      x.constructor !== (function* () {})().constructor,
+      'Argument must not be a generator, as generators are not reusable'
+    );
+  }
+}
diff --git a/testing/web-platform/mozilla/tests/webgpu/common/framework/resources.js b/testing/web-platform/mozilla/tests/webgpu/common/framework/resources.js
new file mode 100644
index 0000000000..72eabeda4e
--- /dev/null
+++ b/testing/web-platform/mozilla/tests/webgpu/common/framework/resources.js
@@ -0,0 +1,111 @@
+/**
+ * AUTO-GENERATED - DO NOT EDIT. Source: https://github.com/gpuweb/cts
+ **/ /**
+ * Base path for resources. The default value is correct for non-worker WPT, but standalone and
+ * workers must access resources using a different base path, so this is overridden in
+ * `test_worker-worker.ts` and `standalone.ts`.
+ */ let baseResourcePath = './resources';
+let crossOriginHost = '';
+
+function getAbsoluteBaseResourcePath(path) {
+  // Path is already an absolute one.
+  if (path[0] === '/') {
+    return path;
+  }
+
+  // Path is relative
+  const relparts = window.location.pathname.split('/');
+  relparts.pop();
+  const pathparts = path.split('/');
+
+  let i;
+  for (i = 0; i < pathparts.length; ++i) {
+    switch (pathparts[i]) {
+      case '':
+        break;
+      case '.':
+        break;
+      case '..':
+        relparts.pop();
+        break;
+      default:
+        relparts.push(pathparts[i]);
+        break;
+    }
+  }
+
+  return relparts.join('/');
+}
+
+function runningOnLocalHost() {
+  const hostname = window.location.hostname;
+  return hostname === 'localhost' || hostname === '127.0.0.1' || hostname === '::1';
+}
+
+/**
+ * Get a path to a resource in the `resources` directory relative to the current execution context
+ * (html file or worker .js file), for `fetch()`, ``, `