summaryrefslogtreecommitdiffstats
path: root/testing/web-platform/tests/css/css-images/image-set
diff options
context:
space:
mode:
authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-19 00:47:55 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-19 00:47:55 +0000
commit26a029d407be480d791972afb5975cf62c9360a6 (patch)
treef435a8308119effd964b339f76abb83a57c29483 /testing/web-platform/tests/css/css-images/image-set
parentInitial commit. (diff)
downloadfirefox-26a029d407be480d791972afb5975cf62c9360a6.tar.xz
firefox-26a029d407be480d791972afb5975cf62c9360a6.zip
Adding upstream version 124.0.1.upstream/124.0.1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'testing/web-platform/tests/css/css-images/image-set')
-rw-r--r--testing/web-platform/tests/css/css-images/image-set/WEB_FEATURES.yml3
-rw-r--r--testing/web-platform/tests/css/css-images/image-set/image-set-all-options-invalid.html18
-rw-r--r--testing/web-platform/tests/css/css-images/image-set/image-set-calc-x-rendering-2.html16
-rw-r--r--testing/web-platform/tests/css/css-images/image-set/image-set-calc-x-rendering.html13
-rw-r--r--testing/web-platform/tests/css/css-images/image-set/image-set-computed.sub.html73
-rw-r--r--testing/web-platform/tests/css/css-images/image-set/image-set-conic-gradient-rendering.html15
-rw-r--r--testing/web-platform/tests/css/css-images/image-set/image-set-content-rendering.html17
-rw-r--r--testing/web-platform/tests/css/css-images/image-set/image-set-dpcm-rendering.html15
-rw-r--r--testing/web-platform/tests/css/css-images/image-set/image-set-dpi-rendering-2.html18
-rw-r--r--testing/web-platform/tests/css/css-images/image-set/image-set-dpi-rendering.html15
-rw-r--r--testing/web-platform/tests/css/css-images/image-set/image-set-dppx-rendering.html15
-rw-r--r--testing/web-platform/tests/css/css-images/image-set/image-set-empty-url-rendering.html18
-rw-r--r--testing/web-platform/tests/css/css-images/image-set/image-set-first-match-rendering.html18
-rw-r--r--testing/web-platform/tests/css/css-images/image-set/image-set-linear-gradient-rendering.html15
-rw-r--r--testing/web-platform/tests/css/css-images/image-set/image-set-negative-resolution-rendering-2.html18
-rw-r--r--testing/web-platform/tests/css/css-images/image-set/image-set-negative-resolution-rendering-3.html14
-rw-r--r--testing/web-platform/tests/css/css-images/image-set/image-set-negative-resolution-rendering.html15
-rw-r--r--testing/web-platform/tests/css/css-images/image-set/image-set-no-res-rendering-2.html15
-rw-r--r--testing/web-platform/tests/css/css-images/image-set/image-set-no-res-rendering.html15
-rw-r--r--testing/web-platform/tests/css/css-images/image-set/image-set-no-url-rendering.html15
-rw-r--r--testing/web-platform/tests/css/css-images/image-set/image-set-parsing.html328
-rw-r--r--testing/web-platform/tests/css/css-images/image-set/image-set-radial-gradient-rendering.html15
-rw-r--r--testing/web-platform/tests/css/css-images/image-set/image-set-rendering-2.html18
-rw-r--r--testing/web-platform/tests/css/css-images/image-set/image-set-rendering.html15
-rw-r--r--testing/web-platform/tests/css/css-images/image-set/image-set-repeating-conic-gradient-rendering.html15
-rw-r--r--testing/web-platform/tests/css/css-images/image-set/image-set-repeating-linear-gradient-rendering.html15
-rw-r--r--testing/web-platform/tests/css/css-images/image-set/image-set-repeating-radial-gradient-rendering.html15
-rw-r--r--testing/web-platform/tests/css/css-images/image-set/image-set-resolution-001-ref.html6
-rw-r--r--testing/web-platform/tests/css/css-images/image-set/image-set-resolution-001.html16
-rw-r--r--testing/web-platform/tests/css/css-images/image-set/image-set-resolution-002.html20
-rw-r--r--testing/web-platform/tests/css/css-images/image-set/image-set-resolution-003.html20
-rw-r--r--testing/web-platform/tests/css/css-images/image-set/image-set-type-first-match-rendering.html18
-rw-r--r--testing/web-platform/tests/css/css-images/image-set/image-set-type-rendering-2.html18
-rw-r--r--testing/web-platform/tests/css/css-images/image-set/image-set-type-rendering-3.html15
-rw-r--r--testing/web-platform/tests/css/css-images/image-set/image-set-type-rendering.html15
-rw-r--r--testing/web-platform/tests/css/css-images/image-set/image-set-type-skip-unsupported-rendering.html18
-rw-r--r--testing/web-platform/tests/css/css-images/image-set/image-set-type-unsupported-rendering-2.html31
-rw-r--r--testing/web-platform/tests/css/css-images/image-set/image-set-type-unsupported-rendering.html28
-rw-r--r--testing/web-platform/tests/css/css-images/image-set/image-set-unordered-res-rendering.html18
-rw-r--r--testing/web-platform/tests/css/css-images/image-set/image-set-zero-resolution-rendering-2.html14
-rw-r--r--testing/web-platform/tests/css/css-images/image-set/image-set-zero-resolution-rendering.html14
-rw-r--r--testing/web-platform/tests/css/css-images/image-set/reference/image-set-conic-gradient-rendering-ref.html12
-rw-r--r--testing/web-platform/tests/css/css-images/image-set/reference/image-set-linear-gradient-rendering-ref.html12
-rw-r--r--testing/web-platform/tests/css/css-images/image-set/reference/image-set-radial-gradient-rendering-ref.html12
-rw-r--r--testing/web-platform/tests/css/css-images/image-set/reference/image-set-rendering-ref.html12
-rw-r--r--testing/web-platform/tests/css/css-images/image-set/reference/image-set-repeating-conic-gradient-rendering-ref.html12
-rw-r--r--testing/web-platform/tests/css/css-images/image-set/reference/image-set-repeating-linear-gradient-rendering-ref.html12
-rw-r--r--testing/web-platform/tests/css/css-images/image-set/reference/image-set-repeating-radial-gradient-rendering-ref.html12
48 files changed, 1117 insertions, 0 deletions
diff --git a/testing/web-platform/tests/css/css-images/image-set/WEB_FEATURES.yml b/testing/web-platform/tests/css/css-images/image-set/WEB_FEATURES.yml
new file mode 100644
index 0000000000..91070c242e
--- /dev/null
+++ b/testing/web-platform/tests/css/css-images/image-set/WEB_FEATURES.yml
@@ -0,0 +1,3 @@
+features:
+- name: image-set
+ files: "**"
diff --git a/testing/web-platform/tests/css/css-images/image-set/image-set-all-options-invalid.html b/testing/web-platform/tests/css/css-images/image-set/image-set-all-options-invalid.html
new file mode 100644
index 0000000000..14d3d0b6e5
--- /dev/null
+++ b/testing/web-platform/tests/css/css-images/image-set/image-set-all-options-invalid.html
@@ -0,0 +1,18 @@
+<!doctype html>
+<title>image-set() is an invalid image if all options are invalid</title>
+<link rel="help" href="https://drafts.csswg.org/css-images-4/#image-set-notation">
+<link rel="help" href="https://drafts.csswg.org/css-images-4/#invalid-image">
+<link rel="help" href="https://www.w3.org/TR/css-backgrounds-3/#border-image-source">
+<link rel="match" href="../../reference/ref-filled-green-100px-square-only.html">
+<style>
+ #target {
+ width: 100px;
+ height: 100px;
+ box-sizing: border-box;
+ background-color: red;
+ border: 50px solid green;
+ border-image: 1 / 10px image-set(url('data:image/png;base64,') type('image/unknown'));
+ }
+</style>
+<p>Test passes if there is a filled green square.</p>
+<div id="target"></div>
diff --git a/testing/web-platform/tests/css/css-images/image-set/image-set-calc-x-rendering-2.html b/testing/web-platform/tests/css/css-images/image-set/image-set-calc-x-rendering-2.html
new file mode 100644
index 0000000000..b7c02fce25
--- /dev/null
+++ b/testing/web-platform/tests/css/css-images/image-set/image-set-calc-x-rendering-2.html
@@ -0,0 +1,16 @@
+<!DOCTYPE html>
+<title>Image set calc x rendering</title>
+<link rel="help" href="https://drafts.csswg.org/css-images-4/#image-set-notation">
+<link rel="match" href="reference/image-set-rendering-ref.html">
+<meta name="assert" content="image-set calc x rendering">
+<style>
+ #test {
+ background-image: image-set(
+ url("/images/green.png") calc(0.5x * 2),
+ url("/images/red.png") 2x
+ );
+ width: 100px;
+ height: 100px;
+ }
+</style>
+<div id="test"></div>
diff --git a/testing/web-platform/tests/css/css-images/image-set/image-set-calc-x-rendering.html b/testing/web-platform/tests/css/css-images/image-set/image-set-calc-x-rendering.html
new file mode 100644
index 0000000000..a5444fd769
--- /dev/null
+++ b/testing/web-platform/tests/css/css-images/image-set/image-set-calc-x-rendering.html
@@ -0,0 +1,13 @@
+<!DOCTYPE html>
+<title>Image set calc x rendering</title>
+<link rel="help" href="https://drafts.csswg.org/css-images-4/#image-set-notation">
+<link rel="match" href="reference/image-set-rendering-ref.html">
+<meta name="assert" content="image-set calc x rendering">
+<style>
+ #test {
+ background-image: image-set(url("/images/green.png") calc(0.5x * 2));
+ width: 100px;
+ height: 100px;
+ }
+</style>
+<div id="test"></div>
diff --git a/testing/web-platform/tests/css/css-images/image-set/image-set-computed.sub.html b/testing/web-platform/tests/css/css-images/image-set/image-set-computed.sub.html
new file mode 100644
index 0000000000..532e48e6e8
--- /dev/null
+++ b/testing/web-platform/tests/css/css-images/image-set/image-set-computed.sub.html
@@ -0,0 +1,73 @@
+<!DOCTYPE html>
+<title>Image set computed value</title>
+<link rel="help" href="https://drafts.csswg.org/css-images-4/#serialization">
+<link rel="help" href="https://www.w3.org/TR/cssom-1/#serializing-css-values">
+<link rel="help" href="https://www.w3.org/TR/css-values-4/#canonical-unit">
+<link rel="help" href="https://www.w3.org/TR/css-values-4/#resolution">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/support/computed-testcommon.js"></script>
+<body>
+<div id="target"></div>
+<script>
+function test_computed_value_variants(property, specified, computed) {
+ if (!computed) computed = specified;
+ test_computed_value(property, specified, computed);
+ test_computed_value(property, "-webkit-" + specified, computed);
+}
+
+function test_calculated_resolution_units() {
+ test_computed_value_variants(
+ 'background-image',
+ "image-set(url('http://{{host}}/example.png') calc(1x * 2))",
+ 'image-set(url("http://{{host}}/example.png") 2dppx)'
+ );
+
+ test_computed_value_variants(
+ 'background-image',
+ "image-set(url('http://{{host}}/example.png') calc(6dppx / 3))",
+ 'image-set(url("http://{{host}}/example.png") 2dppx)'
+ );
+
+ test_computed_value_variants(
+ 'background-image',
+ "image-set(url('http://{{host}}/example.png') calc(100dpi - 4dpi))",
+ 'image-set(url("http://{{host}}/example.png") 1dppx)'
+ );
+
+ test_computed_value_variants(
+ 'background-image',
+ "image-set(url('http://{{host}}/example.png') calc(37dpcm + 0.79532dpcm))",
+ [
+ 'image-set(url("http://{{host}}/example.png") 1dppx)',
+ 'image-set(url("http://{{host}}/example.png") 1.000001dppx)'
+ ]
+ );
+
+ test_computed_value_variants(
+ 'background-image',
+ "image-set(url('http://{{host}}/example.png') calc(-1 * 1x))",
+ 'image-set(url("http://{{host}}/example.png") 0dppx)'
+ );
+}
+
+// The resolution unit is expected to be converted to the canonical unit 'dppx'
+// for computed style.
+test_computed_value_variants('background-image', "image-set(url(http://{{host}}/example.png) 1x)", 'image-set(url("http://{{host}}/example.png") 1dppx)');
+test_computed_value_variants('background-image', "image-set(url(http://{{host}}/example.png) 1x, 'http://{{host}}/example.png' 2x)", 'image-set(url("http://{{host}}/example.png") 1dppx, url("http://{{host}}/example.png") 2dppx)');
+test_computed_value_variants('background-image', 'image-set(url("http://{{host}}/example.png") 1dppx)');
+test_computed_value_variants('background-image', "image-set(url(http://{{host}}/example.png) 48dpi)", 'image-set(url("http://{{host}}/example.png") 0.5dppx)');
+test_computed_value_variants('background-image', "image-set(url(http://{{host}}/example.png) 2400dpcm, 'http://{{host}}/example.png' 2x)", 'image-set(url("http://{{host}}/example.png") 63.5dppx, url("http://{{host}}/example.png") 2dppx)');
+test_computed_value_variants('background-image', "image-set('http://{{host}}/example.jpeg' 240dpi, url(http://{{host}}/example.png) 3.5x)", 'image-set(url("http://{{host}}/example.jpeg") 2.5dppx, url("http://{{host}}/example.png") 3.5dppx)');
+test_computed_value_variants('background-image', "image-set(linear-gradient(black, white) 1x)", "image-set(linear-gradient(rgb(0, 0, 0), rgb(255, 255, 255)) 1dppx)");
+test_computed_value_variants('background-image', "image-set(url(http://{{host}}/example.png) 1x type('image/png'))", 'image-set(url("http://{{host}}/example.png") 1dppx type("image/png"))');
+test_computed_value_variants('background-image', "image-set(url(http://{{host}}/example.png) type('image/png'))", 'image-set(url("http://{{host}}/example.png") 1dppx type("image/png"))');
+test_computed_value_variants('background-image', "image-set(url(http://{{host}}/example.png) type('image/png') 1x)", 'image-set(url("http://{{host}}/example.png") 1dppx type("image/png"))');
+test_computed_value_variants('content', "image-set(url('http://{{host}}/example.png') 192dpi, linear-gradient(black, white) 1x)", 'image-set(url("http://{{host}}/example.png") 2dppx, linear-gradient(rgb(0, 0, 0), rgb(255, 255, 255)) 1dppx)');
+
+// Unsupported type should still serialize.
+test_computed_value_variants('background-image', 'image-set(url("http://{{host}}/example.png") type("image/unsupported"))', 'image-set(url("http://{{host}}/example.png") 1dppx type("image/unsupported"))');
+test_computed_value_variants('background-image', 'image-set(url("http://{{host}}/example.png") 2x type("image/unsupported"), url("http://{{host}}/example.png") 1x type("image/unsupported"))', 'image-set(url("http://{{host}}/example.png") 2dppx type("image/unsupported"), url("http://{{host}}/example.png") 1dppx type("image/unsupported"))');
+
+test_calculated_resolution_units();
+</script>
diff --git a/testing/web-platform/tests/css/css-images/image-set/image-set-conic-gradient-rendering.html b/testing/web-platform/tests/css/css-images/image-set/image-set-conic-gradient-rendering.html
new file mode 100644
index 0000000000..e4f426471a
--- /dev/null
+++ b/testing/web-platform/tests/css/css-images/image-set/image-set-conic-gradient-rendering.html
@@ -0,0 +1,15 @@
+<!DOCTYPE html>
+<title>Image set conic-gradient rendering</title>
+<link rel="author" title="Noam Rosenthal" href="mailto:noam@webkit.org">
+<link rel="author" title="Traian Captan" href="mailto:tcaptan@chromium.org">
+<link rel="help" href="https://drafts.csswg.org/css-images-4/#image-set-notation">
+<link rel="match" href="reference/image-set-conic-gradient-rendering-ref.html">
+<meta name="assert" content="image-set conic-gradient rendering">
+<style>
+ #test {
+ background-image: image-set(conic-gradient(green, lightgreen) 1x);
+ width: 100px;
+ height: 100px;
+ }
+</style>
+<div id="test"></div>
diff --git a/testing/web-platform/tests/css/css-images/image-set/image-set-content-rendering.html b/testing/web-platform/tests/css/css-images/image-set/image-set-content-rendering.html
new file mode 100644
index 0000000000..aa6d1d6f1c
--- /dev/null
+++ b/testing/web-platform/tests/css/css-images/image-set/image-set-content-rendering.html
@@ -0,0 +1,17 @@
+<!DOCTYPE html>
+<title>Image set is supported in the content property</title>
+<link rel="author" title="Emilio Cobos Álvarez" href="mailto:emilio@crisal.io">
+<link rel="author" title="Noam Rosenthal" href="mailto:noam@webkit.org">
+<link rel="author" title="Traian Captan" href="mailto:tcaptan@chromium.org">
+<link rel="help" href="https://drafts.csswg.org/css-images-4/#image-set-notation">
+<link rel="help" href="https://drafts.csswg.org/css-content/#content-property">
+<link rel="match" href="reference/image-set-rendering-ref.html">
+<meta name="assert" content="image-set content rendering">
+<style>
+ #test {
+ content: image-set(url("/images/green.png") 1x);
+ width: 100px;
+ height: 100px;
+ }
+</style>
+<div id="test"></div>
diff --git a/testing/web-platform/tests/css/css-images/image-set/image-set-dpcm-rendering.html b/testing/web-platform/tests/css/css-images/image-set/image-set-dpcm-rendering.html
new file mode 100644
index 0000000000..c9c4f50b5a
--- /dev/null
+++ b/testing/web-platform/tests/css/css-images/image-set/image-set-dpcm-rendering.html
@@ -0,0 +1,15 @@
+<!DOCTYPE html>
+<title>Image set dpi rendering</title>
+<link rel="author" title="Noam Rosenthal" href="mailto:noam@webkit.org">
+<link rel="author" title="Traian Captan" href="mailto:tcaptan@chromium.org">
+<link rel="help" href="https://drafts.csswg.org/css-images-4/#image-set-notation">
+<link rel="match" href="reference/image-set-rendering-ref.html">
+<meta name="assert" content="image-set dpi rendering">
+<style>
+ #test {
+ background-image: image-set(url("/images/green.png") 37dpcm);
+ width: 100px;
+ height: 100px;
+ }
+</style>
+<div id="test"></div>
diff --git a/testing/web-platform/tests/css/css-images/image-set/image-set-dpi-rendering-2.html b/testing/web-platform/tests/css/css-images/image-set/image-set-dpi-rendering-2.html
new file mode 100644
index 0000000000..688c60a688
--- /dev/null
+++ b/testing/web-platform/tests/css/css-images/image-set/image-set-dpi-rendering-2.html
@@ -0,0 +1,18 @@
+<!DOCTYPE html>
+<title>Image set dpi rendering</title>
+<link rel="author" title="Noam Rosenthal" href="mailto:noam@webkit.org">
+<link rel="author" title="Traian Captan" href="mailto:tcaptan@chromium.org">
+<link rel="help" href="https://drafts.csswg.org/css-images-4/#image-set-notation">
+<link rel="match" href="reference/image-set-rendering-ref.html">
+<meta name="assert" content="image-set dpi rendering">
+<style>
+ #test {
+ background-image: image-set(
+ url("/images/green.png") 96dpi,
+ url("/images/red.png") 100dpi
+ );
+ width: 100px;
+ height: 100px;
+ }
+</style>
+<div id="test"></div>
diff --git a/testing/web-platform/tests/css/css-images/image-set/image-set-dpi-rendering.html b/testing/web-platform/tests/css/css-images/image-set/image-set-dpi-rendering.html
new file mode 100644
index 0000000000..3288034d52
--- /dev/null
+++ b/testing/web-platform/tests/css/css-images/image-set/image-set-dpi-rendering.html
@@ -0,0 +1,15 @@
+<!DOCTYPE html>
+<title>Image set dpi rendering</title>
+<link rel="author" title="Noam Rosenthal" href="mailto:noam@webkit.org">
+<link rel="author" title="Traian Captan" href="mailto:tcaptan@chromium.org">
+<link rel="help" href="https://drafts.csswg.org/css-images-4/#image-set-notation">
+<link rel="match" href="reference/image-set-rendering-ref.html">
+<meta name="assert" content="image-set dpi rendering">
+<style>
+ #test {
+ background-image: image-set(url("/images/green.png") 96dpi);
+ width: 100px;
+ height: 100px;
+ }
+</style>
+<div id="test"></div>
diff --git a/testing/web-platform/tests/css/css-images/image-set/image-set-dppx-rendering.html b/testing/web-platform/tests/css/css-images/image-set/image-set-dppx-rendering.html
new file mode 100644
index 0000000000..d111dfb7ff
--- /dev/null
+++ b/testing/web-platform/tests/css/css-images/image-set/image-set-dppx-rendering.html
@@ -0,0 +1,15 @@
+<!DOCTYPE html>
+<title>Image set dppx rendering</title>
+<link rel="author" title="Noam Rosenthal" href="mailto:noam@webkit.org">
+<link rel="author" title="Traian Captan" href="mailto:tcaptan@chromium.org">
+<link rel="help" href="https://drafts.csswg.org/css-images-4/#image-set-notation">
+<link rel="match" href="reference/image-set-rendering-ref.html">
+<meta name="assert" content="image-set dppx rendering">
+<style>
+ #test {
+ background-image: image-set(url("/images/green.png") 1dppx);
+ width: 100px;
+ height: 100px;
+ }
+</style>
+<div id="test"></div>
diff --git a/testing/web-platform/tests/css/css-images/image-set/image-set-empty-url-rendering.html b/testing/web-platform/tests/css/css-images/image-set/image-set-empty-url-rendering.html
new file mode 100644
index 0000000000..f5b9992221
--- /dev/null
+++ b/testing/web-platform/tests/css/css-images/image-set/image-set-empty-url-rendering.html
@@ -0,0 +1,18 @@
+<!DOCTYPE html>
+<title>Image set empty url rendering</title>
+<link rel="author" title="Noam Rosenthal" href="mailto:noam@webkit.org">
+<link rel="author" title="Traian Captan" href="mailto:tcaptan@chromium.org">
+<link rel="help" href="https://drafts.csswg.org/css-images-4/#image-set-notation">
+<link rel="match" href="reference/image-set-rendering-ref.html">
+<meta name="assert" content="image-set rendering when 2x url is empty">
+<style>
+ #test {
+ background-image: image-set(
+ url("/images/green.png") 1x,
+ url("") 2x
+ );
+ width: 100px;
+ height: 100px;
+ }
+</style>
+<div id="test"></div>
diff --git a/testing/web-platform/tests/css/css-images/image-set/image-set-first-match-rendering.html b/testing/web-platform/tests/css/css-images/image-set/image-set-first-match-rendering.html
new file mode 100644
index 0000000000..51d6aeeb24
--- /dev/null
+++ b/testing/web-platform/tests/css/css-images/image-set/image-set-first-match-rendering.html
@@ -0,0 +1,18 @@
+<!DOCTYPE html>
+<title>Image set type first match rendering</title>
+<link rel="author" title="Noam Rosenthal" href="mailto:noam@webkit.org">
+<link rel="author" title="Traian Captan" href="mailto:tcaptan@chromium.org">
+<link rel="help" href="https://drafts.csswg.org/css-images-4/#image-set-notation">
+<link rel="match" href="reference/image-set-rendering-ref.html">
+<meta name="assert" content="image-set rendering picks first valid match">
+<style>
+ #test {
+ background-image: image-set(
+ url("/images/green.png") 1x,
+ url("/images/red.png") 1x
+ );
+ width: 100px;
+ height: 100px;
+ }
+</style>
+<div id="test"></div>
diff --git a/testing/web-platform/tests/css/css-images/image-set/image-set-linear-gradient-rendering.html b/testing/web-platform/tests/css/css-images/image-set/image-set-linear-gradient-rendering.html
new file mode 100644
index 0000000000..2fc31b95a8
--- /dev/null
+++ b/testing/web-platform/tests/css/css-images/image-set/image-set-linear-gradient-rendering.html
@@ -0,0 +1,15 @@
+<!DOCTYPE html>
+<title>Image set linear-gradient rendering</title>
+<link rel="author" title="Noam Rosenthal" href="mailto:noam@webkit.org">
+<link rel="author" title="Traian Captan" href="mailto:tcaptan@chromium.org">
+<link rel="help" href="https://drafts.csswg.org/css-images-4/#image-set-notation">
+<link rel="match" href="reference/image-set-linear-gradient-rendering-ref.html">
+<meta name="assert" content="image-set linear-gradient rendering">
+<style>
+ #test {
+ background-image: image-set(linear-gradient(green, lightgreen) 1x);
+ width: 100px;
+ height: 100px;
+ }
+</style>
+<div id="test"></div>
diff --git a/testing/web-platform/tests/css/css-images/image-set/image-set-negative-resolution-rendering-2.html b/testing/web-platform/tests/css/css-images/image-set/image-set-negative-resolution-rendering-2.html
new file mode 100644
index 0000000000..c686b9a694
--- /dev/null
+++ b/testing/web-platform/tests/css/css-images/image-set/image-set-negative-resolution-rendering-2.html
@@ -0,0 +1,18 @@
+<!DOCTYPE html>
+<title>Image set negative resolution rendering</title>
+<link rel="author" title="Traian Captan" href="mailto:tcaptan@chromium.org">
+<link rel="help" href="https://drafts.csswg.org/css-images-4/#image-set-notation">
+<link rel="match" href="reference/image-set-rendering-ref.html">
+<meta name="assert" content="image-set rendering with negative resolution">
+<style>
+ #test {
+ background-image: url("/images/green.png");
+ background-image: image-set(
+ url("/images/red.png") -1x,
+ url("/images/red.png") 2x
+ );
+ width: 100px;
+ height: 100px;
+ }
+</style>
+<div id="test"></div>
diff --git a/testing/web-platform/tests/css/css-images/image-set/image-set-negative-resolution-rendering-3.html b/testing/web-platform/tests/css/css-images/image-set/image-set-negative-resolution-rendering-3.html
new file mode 100644
index 0000000000..78eec0f2c1
--- /dev/null
+++ b/testing/web-platform/tests/css/css-images/image-set/image-set-negative-resolution-rendering-3.html
@@ -0,0 +1,14 @@
+<!DOCTYPE html>
+<title>Image set negative resolution rendering</title>
+<link rel="help" href="https://drafts.csswg.org/css-images-4/#image-set-notation">
+<link rel="match" href="/css/reference/blank.html">
+<meta name="assert" content="image-set rendering with negative resolution">
+<style>
+ #test {
+ background-image: url("/images/red.png");
+ background-image: image-set(url("/images/red.png") calc(-1 * 1x));
+ width: 100px;
+ height: 100px;
+ }
+</style>
+<div id="test"></div>
diff --git a/testing/web-platform/tests/css/css-images/image-set/image-set-negative-resolution-rendering.html b/testing/web-platform/tests/css/css-images/image-set/image-set-negative-resolution-rendering.html
new file mode 100644
index 0000000000..416b6929f2
--- /dev/null
+++ b/testing/web-platform/tests/css/css-images/image-set/image-set-negative-resolution-rendering.html
@@ -0,0 +1,15 @@
+<!DOCTYPE html>
+<title>Image set negative resolution rendering</title>
+<link rel="author" title="Traian Captan" href="mailto:tcaptan@chromium.org">
+<link rel="help" href="https://drafts.csswg.org/css-images-4/#image-set-notation">
+<link rel="match" href="reference/image-set-rendering-ref.html">
+<meta name="assert" content="image-set rendering with negative resolution">
+<style>
+ #test {
+ background-image: url("/images/green.png");
+ background-image: image-set(url("/images/red.png") -1x);
+ width: 100px;
+ height: 100px;
+ }
+</style>
+<div id="test"></div>
diff --git a/testing/web-platform/tests/css/css-images/image-set/image-set-no-res-rendering-2.html b/testing/web-platform/tests/css/css-images/image-set/image-set-no-res-rendering-2.html
new file mode 100644
index 0000000000..f588980be3
--- /dev/null
+++ b/testing/web-platform/tests/css/css-images/image-set/image-set-no-res-rendering-2.html
@@ -0,0 +1,15 @@
+<!DOCTYPE html>
+<title>Image set no resolution rendering</title>
+<link rel="author" title="Noam Rosenthal" href="mailto:noam@webkit.org">
+<link rel="author" title="Traian Captan" href="mailto:tcaptan@chromium.org">
+<link rel="help" href="https://drafts.csswg.org/css-images-4/#image-set-notation">
+<link rel="match" href="reference/image-set-rendering-ref.html">
+<meta name="assert" content="image-set rendering with no resolution defined">
+<style>
+ #test {
+ background-image: image-set(url("/images/green.png"), url("/images/green.png"));
+ width: 100px;
+ height: 100px;
+ }
+</style>
+<div id="test"></div>
diff --git a/testing/web-platform/tests/css/css-images/image-set/image-set-no-res-rendering.html b/testing/web-platform/tests/css/css-images/image-set/image-set-no-res-rendering.html
new file mode 100644
index 0000000000..577728894d
--- /dev/null
+++ b/testing/web-platform/tests/css/css-images/image-set/image-set-no-res-rendering.html
@@ -0,0 +1,15 @@
+<!DOCTYPE html>
+<title>Image set no resolution rendering</title>
+<link rel="author" title="Noam Rosenthal" href="mailto:noam@webkit.org">
+<link rel="author" title="Traian Captan" href="mailto:tcaptan@chromium.org">
+<link rel="help" href="https://drafts.csswg.org/css-images-4/#image-set-notation">
+<link rel="match" href="reference/image-set-rendering-ref.html">
+<meta name="assert" content="image-set rendering with no resolution defined">
+<style>
+ #test {
+ background-image: image-set(url("/images/green.png"));
+ width: 100px;
+ height: 100px;
+ }
+</style>
+<div id="test"></div>
diff --git a/testing/web-platform/tests/css/css-images/image-set/image-set-no-url-rendering.html b/testing/web-platform/tests/css/css-images/image-set/image-set-no-url-rendering.html
new file mode 100644
index 0000000000..f50ebb676a
--- /dev/null
+++ b/testing/web-platform/tests/css/css-images/image-set/image-set-no-url-rendering.html
@@ -0,0 +1,15 @@
+<!DOCTYPE html>
+<title>Image set no url rendering</title>
+<link rel="author" title="Noam Rosenthal" href="mailto:noam@webkit.org">
+<link rel="author" title="Traian Captan" href="mailto:tcaptan@chromium.org">
+<link rel="help" href="https://drafts.csswg.org/css-images-4/#image-set-notation">
+<link rel="match" href="reference/image-set-rendering-ref.html">
+<meta name="assert" content="image-set without url functional notation rendering">
+<style>
+ #test {
+ background-image: image-set("/images/green.png" 1x);
+ width: 100px;
+ height: 100px;
+ }
+</style>
+<div id="test"></div>
diff --git a/testing/web-platform/tests/css/css-images/image-set/image-set-parsing.html b/testing/web-platform/tests/css/css-images/image-set/image-set-parsing.html
new file mode 100644
index 0000000000..801cb828c5
--- /dev/null
+++ b/testing/web-platform/tests/css/css-images/image-set/image-set-parsing.html
@@ -0,0 +1,328 @@
+<!DOCTYPE html>
+<title>Image set parsing</title>
+<link rel="author" title="Noam Rosenthal" href="mailto:noam.j.rosenthal@gmail.com">
+<link rel="author" title="Traian Captan" href="mailto:tcaptan@chromium.org">
+<link rel="help" href="https://drafts.csswg.org/css-images-4/#image-set-notation">
+<meta name="assert" content="General image-set parsing follows CSS Images 4 rules.">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/support/parsing-testcommon.js"></script>
+<body>
+<script>
+function test_valid_value_variants(property, value, serializedValue) {
+ if (!serializedValue) serializedValue = value;
+ test_valid_value(property, value, serializedValue);
+
+ // The '-webkit-' prefixed 'image-set' is expected to serialize to the same
+ // value as standard 'image-set'.
+ // https://drafts.csswg.org/css-images-4/#deprecated
+ // "Implementations must accept -webkit-image-set() as a parse-time alias of
+ // image-set(). (It’s a valid value, with identical arguments to image-set(),
+ // and is turned into image-set() during parsing.)"
+ test_valid_value(property, "-webkit-" + value, serializedValue);
+}
+
+function test_invalid_value_variants(property, value) {
+ test_invalid_value(property, value);
+ test_invalid_value(property, "-webkit-" + value);
+}
+
+function test_default_resolution_parsing() {
+ // Based on the spec, the resolution is optional and should default
+ // to 1x if not specified.
+ // This set of tests verify this expectation.
+
+ // Test when the only image is missing it's resolution
+ test_valid_value_variants(
+ 'background-image',
+ 'image-set(url(foo))',
+ 'image-set(url("foo") 1x)'
+ );
+
+ // Test when the 1st of 2 images is missing it's resolution
+ test_valid_value_variants(
+ 'background-image',
+ 'image-set(url(foo), url(bar) 1x)',
+ 'image-set(url("foo") 1x, url("bar") 1x)'
+ );
+
+ // Test when the 2nd of 2 images is missing it's resolution
+ test_valid_value_variants(
+ 'background-image',
+ 'image-set(url(foo) 1x, url(bar))',
+ 'image-set(url("foo") 1x, url("bar") 1x)'
+ );
+
+ // Test when both images are missing their resolutions
+ test_valid_value_variants(
+ 'background-image',
+ 'image-set(url(foo), url(bar))',
+ 'image-set(url("foo") 1x, url("bar") 1x)'
+ );
+
+ // Test when the middle of 3 images is missing it's resolution
+ test_valid_value_variants(
+ 'background-image',
+ 'image-set(url(foo) 1x, url(bar), url(baz) 2x)',
+ 'image-set(url("foo") 1x, url("bar") 1x, url("baz") 2x)'
+ );
+}
+
+function test_resolution_units_parsing() {
+ test_valid_value_variants(
+ 'background-image',
+ 'image-set(url("example.png") 1x)'
+ );
+ test_valid_value_variants(
+ 'background-image',
+ 'image-set(url("example.png") calc(2x * 3))',
+ 'image-set(url("example.png") calc(6dppx))'
+ );
+ test_valid_value_variants(
+ 'background-image',
+ 'image-set(url("example.png") 1dppx)'
+ );
+ test_valid_value_variants(
+ 'background-image',
+ 'image-set(url("example.png") calc(1dppx * 1))',
+ 'image-set(url("example.png") calc(1dppx))'
+ );
+ test_valid_value_variants(
+ 'background-image',
+ 'image-set(url("example.png") 1dpi)'
+ );
+ test_valid_value_variants(
+ 'background-image',
+ 'image-set(url("example.png") calc(96dpi * 2))',
+ 'image-set(url("example.png") calc(2dppx))'
+ );
+ test_valid_value_variants(
+ 'background-image',
+ 'image-set(url("example.png") 1dpcm)'
+ );
+ test_valid_value_variants(
+ 'background-image',
+ 'image-set(url("example.png") calc(1dpcm * 96/2.54))',
+ 'image-set(url("example.png") calc(1dppx))'
+ );
+ test_valid_value_variants(
+ 'background-image',
+ 'image-set(url("example.png") 1x, url("example.png") 2dppx, "example.png" 250dpi, "example.png" 1dpcm)',
+ 'image-set(url("example.png") 1x, url("example.png") 2dppx, url("example.png") 250dpi, url("example.png") 1dpcm)'
+ );
+ test_valid_value_variants(
+ 'content',
+ 'image-set(url("example.png") 1dpi)'
+ );
+ test_valid_value_variants(
+ 'content',
+ 'image-set(url("example.png") calc(1 * 96dpi))',
+ 'image-set(url("example.png") calc(1dppx))'
+ );
+
+ test_invalid_value_variants(
+ 'background-image',
+ 'image-set(url("example.png") 1invalidResUnit)'
+ );
+ test_invalid_value_variants(
+ 'background-image',
+ 'image-set(url("example.png") calc(3 * 4))'
+ );
+ test_invalid_value_variants(
+ 'background-image',
+ 'image-set(url("example.png") calc(2 - 1))'
+ );
+ test_invalid_value_variants(
+ 'background-image',
+ 'image-set(url("example.png") calc(2x - 1))'
+ );
+ test_invalid_value_variants(
+ 'background-image',
+ 'image-set(url("example.png") calc(1 + 4dpi))'
+ );
+}
+
+function test_non_positive_resolutions_parsing() {
+ test_valid_value_variants(
+ 'background-image',
+ 'image-set(url("example.png") 0x)'
+ );
+ test_valid_value_variants(
+ 'background-image',
+ 'image-set(url("example.png") 0dppx)'
+ );
+ test_valid_value_variants(
+ 'background-image',
+ 'image-set(url("example.png") 0dpi)'
+ );
+ test_valid_value_variants(
+ 'background-image',
+ 'image-set(url("example.png") 0dpcm)'
+ );
+ test_valid_value_variants(
+ 'background-image',
+ 'image-set(url("example.png") calc(-1 * 1x))',
+ 'image-set(url("example.png") calc(-1dppx))',
+ );
+ test_valid_value_variants(
+ 'background-image',
+ 'image-set(url("example.png") calc(1x + -1x))',
+ 'image-set(url("example.png") calc(0dppx))',
+ );
+
+ test_invalid_value_variants(
+ 'background-image',
+ 'image-set(url("example.png") -1x)'
+ );
+ test_invalid_value_variants(
+ 'background-image',
+ 'image-set(url("example.png") -3dppx)'
+ );
+ test_invalid_value_variants(
+ 'background-image',
+ 'image-set(url("example.png") -96dpi)'
+ );
+ test_invalid_value_variants(
+ 'background-image',
+ 'image-set(url("example.png") -113dpcm)'
+ );
+}
+
+function test_gradient_images_parsing() {
+ test_valid_value_variants(
+ 'background-image',
+ "image-set(linear-gradient(black, white) 1x)"
+ );
+ test_valid_value_variants(
+ 'background-image',
+ "image-set(repeating-linear-gradient(red, blue 25%) 1x)"
+ );
+ test_valid_value_variants(
+ 'background-image',
+ "image-set(radial-gradient(black, white) 1x)"
+ );
+ test_valid_value_variants(
+ 'background-image',
+ "image-set(repeating-radial-gradient(red, blue 25%) 1x)"
+ );
+ test_valid_value_variants(
+ 'background-image',
+ "image-set(conic-gradient(black, white) 1x)"
+ );
+ test_valid_value_variants(
+ 'background-image',
+ "image-set(repeating-conic-gradient(red, blue 25%) 1x)"
+ );
+ test_valid_value_variants(
+ 'content',
+ 'image-set(linear-gradient(black, white) 1x, url("example.png") 4x)'
+ );
+ test_valid_value_variants(
+ 'content',
+ 'image-set(url("example.png") 192dpi, linear-gradient(black, white) 1x)'
+ );
+
+ test_invalid_value_variants(
+ 'cursor',
+ "image-set(linear-gradient(black, white) 1x)"
+ );
+ test_invalid_value_variants(
+ 'background-image',
+ "image-set(linear-gradient(red) 1x)"
+ );
+}
+
+function test_image_type_parsing() {
+ test_valid_value_variants(
+ 'background-image',
+ 'image-set(url("example.png") 1x type("image/png"))'
+ );
+ test_valid_value_variants(
+ 'background-image',
+ "image-set(url(example.png) type('image/png'))",
+ 'image-set(url("example.png") 1x type("image/png"))'
+ );
+ test_valid_value_variants(
+ 'background-image',
+ "image-set(url(example.png) type('image/png') 1x)",
+ 'image-set(url("example.png") 1x type("image/png"))'
+ );
+ test_valid_value_variants(
+ 'background-image',
+ "image-set(url(example.png) 1x type('image/jpeg'))",
+ 'image-set(url("example.png") 1x type("image/jpeg"))'
+ );
+
+ test_invalid_value_variants(
+ 'background-image',
+ "image-set(url(example.png) type(image/png))"
+ );
+ test_invalid_value_variants(
+ 'background-image',
+ "image-set(url(example.png) type('image/png') type('image/png'))"
+ );
+ test_invalid_value_variants(
+ 'background-image',
+ "image-set(url(example.png) type('image/png' 'image/png'))"
+ );
+ test_invalid_value_variants(
+ 'background-image',
+ "image-set(url(example.png) type(url('image/png')))"
+ );
+ test_invalid_value_variants(
+ 'background-image',
+ "image-set(url(example.png) 1xtype('image/png'))"
+ );
+ test_invalid_value_variants(
+ 'background-image',
+ "image-set(type('image/png') url(example.png) 1x)"
+ );
+}
+
+function test_no_images_set_nesting() {
+ // Spec definition:
+ // "The image-set() function can not be nested inside of itself,
+ // either directly or indirectly (as an argument to another <image> type)."
+
+ // Direct nesting
+ test_invalid_value_variants(
+ 'background-image',
+ "image-set(image-set(url(example.png)) 2x)"
+ );
+
+ // Indirect nesting
+ test_invalid_value_variants(
+ 'background-image',
+ "image-set(image(image-set(url(example.png)) 2x) 2x)"
+ );
+}
+
+function test_image_set_parsing() {
+ test_valid_value_variants('background-image', "image-set(url(example.png) 1x)", 'image-set(url("example.png") 1x)');
+ test_valid_value_variants('background-image', "image-set('example.jpg' 1x)", 'image-set(url("example.jpg") 1x)');
+ test_valid_value_variants('background-image', "image-set(url(example.png) 1x, 'example.png' 2x)", 'image-set(url("example.png") 1x, url("example.png") 2x)');
+ test_valid_value_variants('background-image', "image-set(url(example.png) 1dpcm, 'example.png' 2x)", 'image-set(url("example.png") 1dpcm, url("example.png") 2x)');
+ test_valid_value_variants('background-image', "image-set('example.jpeg' 222dpi, url(example.png) 3.5x)", 'image-set(url("example.jpeg") 222dpi, url("example.png") 3.5x)');
+
+ test_valid_value_variants('content', 'image-set(url("example.png") 1x)', 'image-set(url("example.png") 1x)');
+ test_valid_value_variants('content', 'image-set(url("example.png") 1x, "example.png" 3x)', 'image-set(url("example.png") 1x, url("example.png") 3x)');
+ test_valid_value_variants('border-image-source', 'image-set(url("example.png") 1x)', 'image-set(url("example.png") 1x)');
+ test_valid_value_variants('border-image-source', 'image-set(url("example.png") 1x, "example.png" 3x)', 'image-set(url("example.png") 1x, url("example.png") 3x)');
+
+ test_invalid_value_variants('background-image', 'image-set(url("example.png") -20x)');
+ test_invalid_value_variants('background-image', "image-set(none, url(example.png) 1x)");
+ test_invalid_value_variants('background-image', "image-set()");
+ test_invalid_value_variants('background-image', "image-set('example.jpeg' 92pid url(example.png) 1x)");
+ test_invalid_value_variants('background-image', "image-set(url(example.png) 1x url(example.jpeg))");
+ test_invalid_value_variants('background-image', "image-set(url(example.png) 1x 2x)");
+
+ test_default_resolution_parsing();
+ test_resolution_units_parsing();
+ test_non_positive_resolutions_parsing();
+ test_gradient_images_parsing();
+ test_image_type_parsing();
+ test_no_images_set_nesting();
+}
+
+test_image_set_parsing();
+</script>
diff --git a/testing/web-platform/tests/css/css-images/image-set/image-set-radial-gradient-rendering.html b/testing/web-platform/tests/css/css-images/image-set/image-set-radial-gradient-rendering.html
new file mode 100644
index 0000000000..b4e09ea351
--- /dev/null
+++ b/testing/web-platform/tests/css/css-images/image-set/image-set-radial-gradient-rendering.html
@@ -0,0 +1,15 @@
+<!DOCTYPE html>
+<title>Image set radial-gradient rendering</title>
+<link rel="author" title="Noam Rosenthal" href="mailto:noam@webkit.org">
+<link rel="author" title="Traian Captan" href="mailto:tcaptan@chromium.org">
+<link rel="help" href="https://drafts.csswg.org/css-images-4/#image-set-notation">
+<link rel="match" href="reference/image-set-radial-gradient-rendering-ref.html">
+<meta name="assert" content="image-set radial-gradient rendering">
+<style>
+ #test {
+ background-image: image-set(radial-gradient(green, lightgreen) 1x);
+ width: 100px;
+ height: 100px;
+ }
+</style>
+<div id="test"></div>
diff --git a/testing/web-platform/tests/css/css-images/image-set/image-set-rendering-2.html b/testing/web-platform/tests/css/css-images/image-set/image-set-rendering-2.html
new file mode 100644
index 0000000000..fa1749518f
--- /dev/null
+++ b/testing/web-platform/tests/css/css-images/image-set/image-set-rendering-2.html
@@ -0,0 +1,18 @@
+<!DOCTYPE html>
+<title>Image set rendering</title>
+<link rel="author" title="Noam Rosenthal" href="mailto:noam@webkit.org">
+<link rel="author" title="Traian Captan" href="mailto:tcaptan@chromium.org">
+<link rel="help" href="https://drafts.csswg.org/css-images-4/#image-set-notation">
+<link rel="match" href="reference/image-set-rendering-ref.html">
+<meta name="assert" content="image-set rendering">
+<style>
+ #test {
+ background-image: image-set(
+ url("/images/green.png") 1x,
+ url("/images/red.png") 2x
+ );
+ width: 100px;
+ height: 100px;
+ }
+</style>
+<div id="test"></div>
diff --git a/testing/web-platform/tests/css/css-images/image-set/image-set-rendering.html b/testing/web-platform/tests/css/css-images/image-set/image-set-rendering.html
new file mode 100644
index 0000000000..a105438cc4
--- /dev/null
+++ b/testing/web-platform/tests/css/css-images/image-set/image-set-rendering.html
@@ -0,0 +1,15 @@
+<!DOCTYPE html>
+<title>Image set rendering</title>
+<link rel="author" title="Noam Rosenthal" href="mailto:noam@webkit.org">
+<link rel="author" title="Traian Captan" href="mailto:tcaptan@chromium.org">
+<link rel="help" href="https://drafts.csswg.org/css-images-4/#image-set-notation">
+<link rel="match" href="reference/image-set-rendering-ref.html">
+<meta name="assert" content="image-set rendering">
+<style>
+ #test {
+ background-image: image-set(url("/images/green.png") 1x);
+ width: 100px;
+ height: 100px;
+ }
+</style>
+<div id="test"></div>
diff --git a/testing/web-platform/tests/css/css-images/image-set/image-set-repeating-conic-gradient-rendering.html b/testing/web-platform/tests/css/css-images/image-set/image-set-repeating-conic-gradient-rendering.html
new file mode 100644
index 0000000000..89060996f6
--- /dev/null
+++ b/testing/web-platform/tests/css/css-images/image-set/image-set-repeating-conic-gradient-rendering.html
@@ -0,0 +1,15 @@
+<!DOCTYPE html>
+<title>Image set repeating-conic-gradient rendering</title>
+<link rel="author" title="Noam Rosenthal" href="mailto:noam@webkit.org">
+<link rel="author" title="Traian Captan" href="mailto:tcaptan@chromium.org">
+<link rel="help" href="https://drafts.csswg.org/css-images-4/#image-set-notation">
+<link rel="match" href="reference/image-set-repeating-conic-gradient-rendering-ref.html">
+<meta name="assert" content="image-set repeating-conic-gradient rendering">
+<style>
+ #test {
+ background-image: image-set(repeating-conic-gradient(red, blue 25%) 1x);
+ width: 100px;
+ height: 100px;
+ }
+</style>
+<div id="test"></div>
diff --git a/testing/web-platform/tests/css/css-images/image-set/image-set-repeating-linear-gradient-rendering.html b/testing/web-platform/tests/css/css-images/image-set/image-set-repeating-linear-gradient-rendering.html
new file mode 100644
index 0000000000..a9cd6125a9
--- /dev/null
+++ b/testing/web-platform/tests/css/css-images/image-set/image-set-repeating-linear-gradient-rendering.html
@@ -0,0 +1,15 @@
+<!DOCTYPE html>
+<title>Image set repeating-linear-gradient rendering</title>
+<link rel="author" title="Noam Rosenthal" href="mailto:noam@webkit.org">
+<link rel="author" title="Traian Captan" href="mailto:tcaptan@chromium.org">
+<link rel="help" href="https://drafts.csswg.org/css-images-4/#image-set-notation">
+<link rel="match" href="reference/image-set-repeating-linear-gradient-rendering-ref.html">
+<meta name="assert" content="image-set repeating-linear-gradient rendering">
+<style>
+ #test {
+ background-image: image-set(repeating-linear-gradient(red, blue 25%) 1x);
+ width: 100px;
+ height: 100px;
+ }
+</style>
+<div id="test"></div>
diff --git a/testing/web-platform/tests/css/css-images/image-set/image-set-repeating-radial-gradient-rendering.html b/testing/web-platform/tests/css/css-images/image-set/image-set-repeating-radial-gradient-rendering.html
new file mode 100644
index 0000000000..ec8fd54421
--- /dev/null
+++ b/testing/web-platform/tests/css/css-images/image-set/image-set-repeating-radial-gradient-rendering.html
@@ -0,0 +1,15 @@
+<!DOCTYPE html>
+<title>Image set repeating-radial-gradient rendering</title>
+<link rel="author" title="Noam Rosenthal" href="mailto:noam@webkit.org">
+<link rel="author" title="Traian Captan" href="mailto:tcaptan@chromium.org">
+<link rel="help" href="https://drafts.csswg.org/css-images-4/#image-set-notation">
+<link rel="match" href="reference/image-set-repeating-radial-gradient-rendering-ref.html">
+<meta name="assert" content="image-set repeating-radial-gradient rendering">
+<style>
+ #test {
+ background-image: image-set(repeating-radial-gradient(red, blue 25%) 1x);
+ width: 100px;
+ height: 100px;
+ }
+</style>
+<div id="test"></div>
diff --git a/testing/web-platform/tests/css/css-images/image-set/image-set-resolution-001-ref.html b/testing/web-platform/tests/css/css-images/image-set/image-set-resolution-001-ref.html
new file mode 100644
index 0000000000..46c4d729ed
--- /dev/null
+++ b/testing/web-platform/tests/css/css-images/image-set/image-set-resolution-001-ref.html
@@ -0,0 +1,6 @@
+<!doctype html>
+<title>CSS Test Reference</title>
+<style>
+ body { margin: 0 }
+</style>
+<img srcset="/images/green.png 0.5x">
diff --git a/testing/web-platform/tests/css/css-images/image-set/image-set-resolution-001.html b/testing/web-platform/tests/css/css-images/image-set/image-set-resolution-001.html
new file mode 100644
index 0000000000..aaa750217d
--- /dev/null
+++ b/testing/web-platform/tests/css/css-images/image-set/image-set-resolution-001.html
@@ -0,0 +1,16 @@
+<!doctype html>
+<title>Image set resolution affects intrinsic size of the image</title>
+<link rel="match" href="image-set-resolution-001-ref.html">
+<link rel="author" href="mailto:emilio@crisal.io" title="Emilio Cobos Álvarez">
+<link rel="author" href="https://mozilla.org" title="Mozilla">
+<link rel="help" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1705877">
+<link rel="help" href="https://drafts.csswg.org/css-images-4/#image-set-notation">
+<style>
+ body { margin: 0 }
+ div {
+ /* green.png is 100x50, should be 200x100 instead */
+ content: -webkit-image-set(url('/images/green.png') 0.5x);
+ content: image-set(url('/images/green.png') 0.5x);
+ }
+</style>
+<div></div>
diff --git a/testing/web-platform/tests/css/css-images/image-set/image-set-resolution-002.html b/testing/web-platform/tests/css/css-images/image-set/image-set-resolution-002.html
new file mode 100644
index 0000000000..e5795e172f
--- /dev/null
+++ b/testing/web-platform/tests/css/css-images/image-set/image-set-resolution-002.html
@@ -0,0 +1,20 @@
+<!doctype html>
+<title>Image set resolution affects intrinsic size of the image</title>
+<link rel="match" href="image-set-resolution-001-ref.html">
+<link rel="author" href="mailto:emilio@crisal.io" title="Emilio Cobos Álvarez">
+<link rel="author" href="https://mozilla.org" title="Mozilla">
+<link rel="help" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1705877">
+<link rel="help" href="https://drafts.csswg.org/css-images-4/#image-set-notation">
+<style>
+ body { margin: 0 }
+ div {
+ /* green.png is 100x50, should be 200x100 instead */
+ background-image: -webkit-image-set(url('/images/green.png') 0.5x);
+ background-image: image-set(url('/images/green.png') 0.5x);
+ background-repeat: no-repeat;
+ background-origin: 0 0;
+ width: 100vw;
+ height: 100vh;
+ }
+</style>
+<div></div>
diff --git a/testing/web-platform/tests/css/css-images/image-set/image-set-resolution-003.html b/testing/web-platform/tests/css/css-images/image-set/image-set-resolution-003.html
new file mode 100644
index 0000000000..734ee05ecd
--- /dev/null
+++ b/testing/web-platform/tests/css/css-images/image-set/image-set-resolution-003.html
@@ -0,0 +1,20 @@
+<!doctype html>
+<title>Image set resolution affects intrinsic size of the image</title>
+<link rel="match" href="image-set-resolution-001-ref.html">
+<link rel="author" href="mailto:emilio@crisal.io" title="Emilio Cobos Álvarez">
+<link rel="author" href="https://mozilla.org" title="Mozilla">
+<link rel="help" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1705877">
+<link rel="help" href="https://drafts.csswg.org/css-images-4/#image-set-notation">
+<style>
+ body { margin: 0 }
+ ul, li { margin: 0; padding: 0 }
+ li {
+ list-style-position: inside;
+ /* green.png is 100x50, should be 200x100 instead */
+ list-style-image: -webkit-image-set(url('/images/green.png') 0.5x);
+ list-style-image: image-set(url('/images/green.png') 0.5x);
+ }
+</style>
+<ul>
+ <li></li>
+</ul>
diff --git a/testing/web-platform/tests/css/css-images/image-set/image-set-type-first-match-rendering.html b/testing/web-platform/tests/css/css-images/image-set/image-set-type-first-match-rendering.html
new file mode 100644
index 0000000000..eafe5bfb2c
--- /dev/null
+++ b/testing/web-platform/tests/css/css-images/image-set/image-set-type-first-match-rendering.html
@@ -0,0 +1,18 @@
+<!DOCTYPE html>
+<title>Image set type first match rendering</title>
+<link rel="author" title="Noam Rosenthal" href="mailto:noam@webkit.org">
+<link rel="author" title="Traian Captan" href="mailto:tcaptan@chromium.org">
+<link rel="help" href="https://drafts.csswg.org/css-images-4/#image-set-notation">
+<link rel="match" href="reference/image-set-rendering-ref.html">
+<meta name="assert" content="image-set rendering with type picks first valid match">
+<style>
+ #test {
+ background-image: image-set(
+ url("/images/green.png") 0.0001x type('image/png'),
+ url("/images/red.png") 0.0001x type('image/png')
+ );
+ width: 100px;
+ height: 100px;
+ }
+</style>
+<div id="test"></div>
diff --git a/testing/web-platform/tests/css/css-images/image-set/image-set-type-rendering-2.html b/testing/web-platform/tests/css/css-images/image-set/image-set-type-rendering-2.html
new file mode 100644
index 0000000000..23e90ea9e4
--- /dev/null
+++ b/testing/web-platform/tests/css/css-images/image-set/image-set-type-rendering-2.html
@@ -0,0 +1,18 @@
+<!DOCTYPE html>
+<title>Image set type rendering</title>
+<link rel="author" title="Noam Rosenthal" href="mailto:noam@webkit.org">
+<link rel="author" title="Traian Captan" href="mailto:tcaptan@chromium.org">
+<link rel="help" href="https://drafts.csswg.org/css-images-4/#image-set-notation">
+<link rel="match" href="reference/image-set-rendering-ref.html">
+<meta name="assert" content="image-set rendering for images with same type but different resolutions">
+<style>
+ #test {
+ background-image: image-set(
+ url("/images/green.png") type('image/png') 1x,
+ url("/images/red.png") type('image/png') 2x
+ );
+ width: 100px;
+ height: 100px;
+ }
+</style>
+<div id="test"></div>
diff --git a/testing/web-platform/tests/css/css-images/image-set/image-set-type-rendering-3.html b/testing/web-platform/tests/css/css-images/image-set/image-set-type-rendering-3.html
new file mode 100644
index 0000000000..b47c4d82a3
--- /dev/null
+++ b/testing/web-platform/tests/css/css-images/image-set/image-set-type-rendering-3.html
@@ -0,0 +1,15 @@
+<!DOCTYPE html>
+<title>Image set type rendering</title>
+<link rel="author" title="Noam Rosenthal" href="mailto:noam@webkit.org">
+<link rel="author" title="Traian Captan" href="mailto:tcaptan@chromium.org">
+<link rel="help" href="https://drafts.csswg.org/css-images-4/#image-set-notation">
+<link rel="match" href="reference/image-set-rendering-ref.html">
+<meta name="assert" content="image-set rendering with type before resolution">
+<style>
+ #test {
+ background-image: image-set(url("/images/green.png") type('image/png') 1x);
+ width: 100px;
+ height: 100px;
+ }
+</style>
+<div id="test"></div>
diff --git a/testing/web-platform/tests/css/css-images/image-set/image-set-type-rendering.html b/testing/web-platform/tests/css/css-images/image-set/image-set-type-rendering.html
new file mode 100644
index 0000000000..069e2c867f
--- /dev/null
+++ b/testing/web-platform/tests/css/css-images/image-set/image-set-type-rendering.html
@@ -0,0 +1,15 @@
+<!DOCTYPE html>
+<title>Image set type rendering</title>
+<link rel="author" title="Noam Rosenthal" href="mailto:noam@webkit.org">
+<link rel="author" title="Traian Captan" href="mailto:tcaptan@chromium.org">
+<link rel="help" href="https://drafts.csswg.org/css-images-4/#image-set-notation">
+<link rel="match" href="reference/image-set-rendering-ref.html">
+<meta name="assert" content="image-set rendering with type">
+<style>
+ #test {
+ background-image: image-set(url("/images/green.png") 1x type('image/png'));
+ width: 100px;
+ height: 100px;
+ }
+</style>
+<div id="test"></div>
diff --git a/testing/web-platform/tests/css/css-images/image-set/image-set-type-skip-unsupported-rendering.html b/testing/web-platform/tests/css/css-images/image-set/image-set-type-skip-unsupported-rendering.html
new file mode 100644
index 0000000000..4473e816bd
--- /dev/null
+++ b/testing/web-platform/tests/css/css-images/image-set/image-set-type-skip-unsupported-rendering.html
@@ -0,0 +1,18 @@
+<!DOCTYPE html>
+<title>Image set type skip unsupported rendering</title>
+<link rel="author" title="Noam Rosenthal" href="mailto:noam@webkit.org">
+<link rel="author" title="Traian Captan" href="mailto:tcaptan@chromium.org">
+<link rel="help" href="https://drafts.csswg.org/css-images-4/#image-set-notation">
+<link rel="match" href="reference/image-set-rendering-ref.html">
+<meta name="assert" content="image-set rendering with type skips unsupported type">
+<style>
+ #test {
+ background-image: image-set(
+ url("/images/red.png") 1x type('image/unsupported'),
+ url("/images/green.png") 1x type('image/png')
+ );
+ width: 100px;
+ height: 100px;
+ }
+</style>
+<div id="test"></div>
diff --git a/testing/web-platform/tests/css/css-images/image-set/image-set-type-unsupported-rendering-2.html b/testing/web-platform/tests/css/css-images/image-set/image-set-type-unsupported-rendering-2.html
new file mode 100644
index 0000000000..bebc32d87d
--- /dev/null
+++ b/testing/web-platform/tests/css/css-images/image-set/image-set-type-unsupported-rendering-2.html
@@ -0,0 +1,31 @@
+<!DOCTYPE html>
+<title>Image set type rendering</title>
+<link rel="author" title="Noam Rosenthal" href="mailto:noam@webkit.org">
+<link rel="author" title="Traian Captan" href="mailto:tcaptan@chromium.org">
+<link rel="help" href="https://drafts.csswg.org/css-images-4/#image-set-notation">
+<link rel="match" href="/css/reference/blank.html">
+<meta name="assert" content="image-set rendering with all unsupported types">
+<!--
+Spec definition:
+"An image-set() function contains a list of one or more <image-set-option>s,
+ and must select only one of them to determine what image it will represent:
+ First, remove any <image-set-option>s from the list that specify
+ an unknown or unsupported MIME type in their type() value."
+
+If all the values in the image set are of an unsupported type,
+the set should be empty.
+
+"This has no effect on the validity of the image-set() function"
+-->
+<style>
+ #test {
+ background-image: url("/images/red.png");
+ background-image: image-set(
+ url("/images/green.png") 1x type('image/unsupported'),
+ url("/images/green.png") 1x type('image/unsupported')
+ );
+ width: 100px;
+ height: 100px;
+ }
+</style>
+<div id="test"></div>
diff --git a/testing/web-platform/tests/css/css-images/image-set/image-set-type-unsupported-rendering.html b/testing/web-platform/tests/css/css-images/image-set/image-set-type-unsupported-rendering.html
new file mode 100644
index 0000000000..486fcb3a8e
--- /dev/null
+++ b/testing/web-platform/tests/css/css-images/image-set/image-set-type-unsupported-rendering.html
@@ -0,0 +1,28 @@
+<!DOCTYPE html>
+<title>Image set type rendering</title>
+<link rel="author" title="Noam Rosenthal" href="mailto:noam@webkit.org">
+<link rel="author" title="Traian Captan" href="mailto:tcaptan@chromium.org">
+<link rel="help" href="https://drafts.csswg.org/css-images-4/#image-set-notation">
+<link rel="match" href="/css/reference/blank.html">
+<meta name="assert" content="image-set rendering with unsupported type">
+<!--
+Spec definition:
+"An image-set() function contains a list of one or more <image-set-option>s,
+ and must select only one of them to determine what image it will represent:
+ First, remove any <image-set-option>s from the list that specify
+ an unknown or unsupported MIME type in their type() value."
+
+If all the values in the image set are of an unsupported type,
+the set should be empty.
+
+"This has no effect on the validity of the image-set() function"
+-->
+<style>
+ #test {
+ background-image: url("/images/red.png");
+ background-image: image-set(url("/images/green.png") 1x type('image/unsupported'));
+ width: 100px;
+ height: 100px;
+ }
+</style>
+<div id="test"></div>
diff --git a/testing/web-platform/tests/css/css-images/image-set/image-set-unordered-res-rendering.html b/testing/web-platform/tests/css/css-images/image-set/image-set-unordered-res-rendering.html
new file mode 100644
index 0000000000..2085b416b6
--- /dev/null
+++ b/testing/web-platform/tests/css/css-images/image-set/image-set-unordered-res-rendering.html
@@ -0,0 +1,18 @@
+<!DOCTYPE html>
+<title>Image set type unordered resolutions rendering</title>
+<link rel="author" title="Noam Rosenthal" href="mailto:noam@webkit.org">
+<link rel="author" title="Traian Captan" href="mailto:tcaptan@chromium.org">
+<link rel="help" href="https://drafts.csswg.org/css-images-4/#image-set-notation">
+<link rel="match" href="reference/image-set-rendering-ref.html">
+<meta name="assert" content="image-set rendering when resolutions are unordered">
+<style>
+ #test {
+ background-image: image-set(
+ url("/images/red.png") 2x,
+ url("/images/green.png") 1x
+ );
+ width: 100px;
+ height: 100px;
+ }
+</style>
+<div id="test"></div>
diff --git a/testing/web-platform/tests/css/css-images/image-set/image-set-zero-resolution-rendering-2.html b/testing/web-platform/tests/css/css-images/image-set/image-set-zero-resolution-rendering-2.html
new file mode 100644
index 0000000000..ae1c765049
--- /dev/null
+++ b/testing/web-platform/tests/css/css-images/image-set/image-set-zero-resolution-rendering-2.html
@@ -0,0 +1,14 @@
+<!DOCTYPE html>
+<link rel="help" href="https://drafts.csswg.org/css-images-4/#image-set-notation">
+<link rel="match" href="/css/reference/blank.html">
+<meta name="assert" content="image-set rendering with zero resolution">
+<style>
+#test {
+ background-image: url("/images/red.png");
+ background-image: image-set(url("/images/red.png") calc(0dppx * -1));
+ width: 100px;
+ height: 100px;
+}
+</style>
+<div id="test"></div>
+
diff --git a/testing/web-platform/tests/css/css-images/image-set/image-set-zero-resolution-rendering.html b/testing/web-platform/tests/css/css-images/image-set/image-set-zero-resolution-rendering.html
new file mode 100644
index 0000000000..0da39b7581
--- /dev/null
+++ b/testing/web-platform/tests/css/css-images/image-set/image-set-zero-resolution-rendering.html
@@ -0,0 +1,14 @@
+<!DOCTYPE html>
+<link rel="help" href="https://drafts.csswg.org/css-images-4/#image-set-notation">
+<link rel="match" href="/css/reference/blank.html">
+<meta name="assert" content="image-set rendering with zero resolution">
+<style>
+#test {
+ background-image: url("/images/red.png");
+ background-image: image-set(url("/images/red.png") 0x);
+ width: 100px;
+ height: 100px;
+}
+</style>
+<div id="test"></div>
+
diff --git a/testing/web-platform/tests/css/css-images/image-set/reference/image-set-conic-gradient-rendering-ref.html b/testing/web-platform/tests/css/css-images/image-set/reference/image-set-conic-gradient-rendering-ref.html
new file mode 100644
index 0000000000..2a5133ee94
--- /dev/null
+++ b/testing/web-platform/tests/css/css-images/image-set/reference/image-set-conic-gradient-rendering-ref.html
@@ -0,0 +1,12 @@
+<!DOCTYPE html>
+<title>Image set conic-gradient rendering</title>
+<link rel="author" title="Noam Rosenthal" href="mailto:noam@webkit.org">
+<link rel="author" title="Traian Captan" href="mailto:tcaptan@chromium.org">
+<style>
+ #test {
+ width: 100px;
+ height: 100px;
+ background: conic-gradient(green, lightgreen);
+ }
+</style>
+<div id="test"></div>
diff --git a/testing/web-platform/tests/css/css-images/image-set/reference/image-set-linear-gradient-rendering-ref.html b/testing/web-platform/tests/css/css-images/image-set/reference/image-set-linear-gradient-rendering-ref.html
new file mode 100644
index 0000000000..7f95f46eaf
--- /dev/null
+++ b/testing/web-platform/tests/css/css-images/image-set/reference/image-set-linear-gradient-rendering-ref.html
@@ -0,0 +1,12 @@
+<!DOCTYPE html>
+<title>Image set linear-gradient rendering</title>
+<link rel="author" title="Noam Rosenthal" href="mailto:noam@webkit.org">
+<link rel="author" title="Traian Captan" href="mailto:tcaptan@chromium.org">
+<style>
+ #test {
+ width: 100px;
+ height: 100px;
+ background: linear-gradient(green, lightgreen);
+ }
+</style>
+<div id="test"></div>
diff --git a/testing/web-platform/tests/css/css-images/image-set/reference/image-set-radial-gradient-rendering-ref.html b/testing/web-platform/tests/css/css-images/image-set/reference/image-set-radial-gradient-rendering-ref.html
new file mode 100644
index 0000000000..3c49f87d91
--- /dev/null
+++ b/testing/web-platform/tests/css/css-images/image-set/reference/image-set-radial-gradient-rendering-ref.html
@@ -0,0 +1,12 @@
+<!DOCTYPE html>
+<title>Image set radial-gradient rendering</title>
+<link rel="author" title="Noam Rosenthal" href="mailto:noam@webkit.org">
+<link rel="author" title="Traian Captan" href="mailto:tcaptan@chromium.org">
+<style>
+ #test {
+ width: 100px;
+ height: 100px;
+ background: radial-gradient(green, lightgreen);
+ }
+</style>
+<div id="test"></div>
diff --git a/testing/web-platform/tests/css/css-images/image-set/reference/image-set-rendering-ref.html b/testing/web-platform/tests/css/css-images/image-set/reference/image-set-rendering-ref.html
new file mode 100644
index 0000000000..8a56bbf4d2
--- /dev/null
+++ b/testing/web-platform/tests/css/css-images/image-set/reference/image-set-rendering-ref.html
@@ -0,0 +1,12 @@
+<!DOCTYPE html>
+<title>Image set rendering</title>
+<link rel="author" title="Noam Rosenthal" href="mailto:noam@webkit.org">
+<link rel="author" title="Traian Captan" href="mailto:tcaptan@chromium.org">
+<style>
+ #test {
+ width: 100px;
+ height: 100px;
+ background-color: lime;
+ }
+</style>
+<div id="test"></div>
diff --git a/testing/web-platform/tests/css/css-images/image-set/reference/image-set-repeating-conic-gradient-rendering-ref.html b/testing/web-platform/tests/css/css-images/image-set/reference/image-set-repeating-conic-gradient-rendering-ref.html
new file mode 100644
index 0000000000..02466664c6
--- /dev/null
+++ b/testing/web-platform/tests/css/css-images/image-set/reference/image-set-repeating-conic-gradient-rendering-ref.html
@@ -0,0 +1,12 @@
+<!DOCTYPE html>
+<title>Image set repeating-conic-gradient rendering</title>
+<link rel="author" title="Noam Rosenthal" href="mailto:noam@webkit.org">
+<link rel="author" title="Traian Captan" href="mailto:tcaptan@chromium.org">
+<style>
+ #test {
+ width: 100px;
+ height: 100px;
+ background: repeating-conic-gradient(red, blue 25%);
+ }
+</style>
+<div id="test"></div>
diff --git a/testing/web-platform/tests/css/css-images/image-set/reference/image-set-repeating-linear-gradient-rendering-ref.html b/testing/web-platform/tests/css/css-images/image-set/reference/image-set-repeating-linear-gradient-rendering-ref.html
new file mode 100644
index 0000000000..e2915b1331
--- /dev/null
+++ b/testing/web-platform/tests/css/css-images/image-set/reference/image-set-repeating-linear-gradient-rendering-ref.html
@@ -0,0 +1,12 @@
+<!DOCTYPE html>
+<title>Image set repeating-linear-gradient rendering</title>
+<link rel="author" title="Noam Rosenthal" href="mailto:noam@webkit.org">
+<link rel="author" title="Traian Captan" href="mailto:tcaptan@chromium.org">
+<style>
+ #test {
+ width: 100px;
+ height: 100px;
+ background: repeating-linear-gradient(red, blue 25%);
+ }
+</style>
+<div id="test"></div>
diff --git a/testing/web-platform/tests/css/css-images/image-set/reference/image-set-repeating-radial-gradient-rendering-ref.html b/testing/web-platform/tests/css/css-images/image-set/reference/image-set-repeating-radial-gradient-rendering-ref.html
new file mode 100644
index 0000000000..00035b3998
--- /dev/null
+++ b/testing/web-platform/tests/css/css-images/image-set/reference/image-set-repeating-radial-gradient-rendering-ref.html
@@ -0,0 +1,12 @@
+<!DOCTYPE html>
+<title>Image set repeating-radial-gradient rendering</title>
+<link rel="author" title="Noam Rosenthal" href="mailto:noam@webkit.org">
+<link rel="author" title="Traian Captan" href="mailto:tcaptan@chromium.org">
+<style>
+ #test {
+ width: 100px;
+ height: 100px;
+ background: repeating-radial-gradient(red, blue 25%);
+ }
+</style>
+<div id="test"></div>