1 files changed, 68 insertions, 0 deletions
diff --git a/dom/webgpu/tests/cts/checkout/src/webgpu/shader/execution/expression/call/builtin/cos.spec.ts b/dom/webgpu/tests/cts/checkout/src/webgpu/shader/execution/expression/call/builtin/cos.spec.ts
new file mode 100644
index 0000000000..c81b985dc5
--- /dev/null
+++ b/dom/webgpu/tests/cts/checkout/src/webgpu/shader/execution/expression/call/builtin/cos.spec.ts
@@ -0,0 +1,68 @@
+export const description = `
+Execution tests for the 'cos' builtin function
+
+S is AbstractFloat, f32, f16
+T is S or vecN<S>
+@const fn cos(e: T ) -> T
+Returns the cosine of e. Component-wise when T is a vector.
+
+`;
+
+import { makeTestGroup } from '../../../../../../common/framework/test_group.js';
+import { GPUTest } from '../../../../../gpu_test.js';
+import { TypeF32 } from '../../../../../util/conversion.js';
+import { cosInterval } from '../../../../../util/f32_interval.js';
+import { fullF32Range, linearRange } from '../../../../../util/math.js';
+import { makeCaseCache } from '../../case_cache.js';
+import { allInputSources, generateUnaryToF32IntervalCases, run } from '../../expression.js';
+
+import { builtin } from './builtin.js';
+
+export const g = makeTestGroup(GPUTest);
+
+export const d = makeCaseCache('cos', {
+  f32: () => {
+    return generateUnaryToF32IntervalCases(
+      [
+        // Well defined accuracy range
+        ...linearRange(-Math.PI, Math.PI, 1000),
+        ...fullF32Range(),
+      ],
+      'unfiltered',
+      cosInterval
+    );
+  },
+});
+
+g.test('abstract_float')
+  .specURL('https://www.w3.org/TR/WGSL/#float-builtin-functions')
+  .desc(`abstract float tests`)
+  .params(u =>
+    u.combine('inputSource', allInputSources).combine('vectorize', [undefined, 2, 3, 4] as const)
+  )
+  .unimplemented();
+
+g.test('f32')
+  .specURL('https://www.w3.org/TR/WGSL/#float-builtin-functions')
+  .desc(
+    `
+f32 tests
+
+TODO(#792): Decide what the ground-truth is for these tests. [1]
+`
+  )
+  .params(u =>
+    u.combine('inputSource', allInputSources).combine('vectorize', [undefined, 2, 3, 4] as const)
+  )
+  .fn(async t => {
+    const cases = await d.get('f32');
+    await run(t, builtin('cos'), [TypeF32], TypeF32, t.params, cases);
+  });
+
+g.test('f16')
+  .specURL('https://www.w3.org/TR/WGSL/#float-builtin-functions')
+  .desc(`f16 tests`)
+  .params(u =>
+    u.combine('inputSource', allInputSources).combine('vectorize', [undefined, 2, 3, 4] as const)
+  )
+  .unimplemented();