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-rw-r--r--testing/web-platform/tests/css/css-transitions/parsing/transition-computed.html34
-rw-r--r--testing/web-platform/tests/css/css-transitions/parsing/transition-delay-computed.html18
-rw-r--r--testing/web-platform/tests/css/css-transitions/parsing/transition-delay-invalid.html22
-rw-r--r--testing/web-platform/tests/css/css-transitions/parsing/transition-delay-valid.html20
-rw-r--r--testing/web-platform/tests/css/css-transitions/parsing/transition-duration-computed.html20
-rw-r--r--testing/web-platform/tests/css/css-transitions/parsing/transition-duration-invalid.html22
-rw-r--r--testing/web-platform/tests/css/css-transitions/parsing/transition-duration-valid.html19
-rw-r--r--testing/web-platform/tests/css/css-transitions/parsing/transition-invalid.html24
-rw-r--r--testing/web-platform/tests/css/css-transitions/parsing/transition-property-computed.html19
-rw-r--r--testing/web-platform/tests/css/css-transitions/parsing/transition-property-invalid.html32
-rw-r--r--testing/web-platform/tests/css/css-transitions/parsing/transition-property-valid.html22
-rw-r--r--testing/web-platform/tests/css/css-transitions/parsing/transition-shorthand.html36
-rw-r--r--testing/web-platform/tests/css/css-transitions/parsing/transition-timing-function-computed.html38
-rw-r--r--testing/web-platform/tests/css/css-transitions/parsing/transition-timing-function-invalid.html38
-rw-r--r--testing/web-platform/tests/css/css-transitions/parsing/transition-timing-function-valid.html38
-rw-r--r--testing/web-platform/tests/css/css-transitions/parsing/transition-valid.html29
16 files changed, 431 insertions, 0 deletions
diff --git a/testing/web-platform/tests/css/css-transitions/parsing/transition-computed.html b/testing/web-platform/tests/css/css-transitions/parsing/transition-computed.html
new file mode 100644
index 0000000000..a82551372f
--- /dev/null
+++ b/testing/web-platform/tests/css/css-transitions/parsing/transition-computed.html
@@ -0,0 +1,34 @@
+<!DOCTYPE html>
+<html>
+<head>
+<meta charset="utf-8">
+<title>CSS Transitions: getComputedStyle().transition</title>
+<link rel="help" href="https://drafts.csswg.org/css-transitions/#transition-shorthand-property">
+<meta name="assert" content="transition computed value is as specified.">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/support/computed-testcommon.js"></script>
+</head>
+<body>
+<div id="target"></div>
+<script>
+// <single-transition> = [ none | <single-transition-property> ] ||
+// <time> || <easing-function> || <time>
+
+test(() => {
+ assert_equals(getComputedStyle(document.getElementById('target')).transition, "all 0s ease 0s");
+}, "Default transition value");
+
+test_computed_value("transition", "1s", "all 1s ease 0s");
+test_computed_value("transition", "cubic-bezier(0, -2, 1, 3)", "all 0s cubic-bezier(0, -2, 1, 3) 0s");
+test_computed_value("transition", "1s -3s", "all 1s ease -3s");
+test_computed_value("transition", "none", "none 0s ease 0s");
+test_computed_value("transition", "top", "top 0s ease 0s");
+
+test_computed_value("transition", "1s -3s cubic-bezier(0, -2, 1, 3) top", "top 1s cubic-bezier(0, -2, 1, 3) -3s");
+test_computed_value("transition", "1s -3s, cubic-bezier(0, -2, 1, 3) top", "all 1s ease -3s, top 0s cubic-bezier(0, -2, 1, 3) 0s");
+
+// TODO: Add test with a single timing-function keyword.
+</script>
+</body>
+</html>
diff --git a/testing/web-platform/tests/css/css-transitions/parsing/transition-delay-computed.html b/testing/web-platform/tests/css/css-transitions/parsing/transition-delay-computed.html
new file mode 100644
index 0000000000..8e5b0e80da
--- /dev/null
+++ b/testing/web-platform/tests/css/css-transitions/parsing/transition-delay-computed.html
@@ -0,0 +1,18 @@
+<!DOCTYPE html>
+<html>
+<head>
+<meta charset="utf-8">
+<title>CSS Transitions: getComputedStyle().transitionDelay</title>
+<link rel="help" href="https://drafts.csswg.org/css-transitions/#propdef-transition-delay">
+<meta name="assert" content="transition-delay converts to seconds.">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/support/computed-testcommon.js"></script>
+</head>
+<body>
+<div id="target"></div>
+<script>
+test_computed_value("transition-delay", "-500ms, calc(2 * 3s)", "-0.5s, 6s");
+</script>
+</body>
+</html>
diff --git a/testing/web-platform/tests/css/css-transitions/parsing/transition-delay-invalid.html b/testing/web-platform/tests/css/css-transitions/parsing/transition-delay-invalid.html
new file mode 100644
index 0000000000..4b7a143286
--- /dev/null
+++ b/testing/web-platform/tests/css/css-transitions/parsing/transition-delay-invalid.html
@@ -0,0 +1,22 @@
+<!DOCTYPE html>
+<html>
+<head>
+<meta charset="utf-8">
+<title>CSS Transitions: parsing transition-delay with invalid values</title>
+<link rel="help" href="https://drafts.csswg.org/css-transitions/#propdef-transition-delay">
+<meta name="assert" content="transition-delay supports only the grammar '<time> #'.">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/support/parsing-testcommon.js"></script>
+</head>
+<body>
+<script>
+test_invalid_value("transition-delay", 'infinite');
+test_invalid_value("transition-delay", '0');
+test_invalid_value("transition-delay", '500ms 0.5s');
+
+test_invalid_value("transition-delay", '-3s, initial');
+test_invalid_value("transition-delay", 'initial, -3s');
+</script>
+</body>
+</html>
diff --git a/testing/web-platform/tests/css/css-transitions/parsing/transition-delay-valid.html b/testing/web-platform/tests/css/css-transitions/parsing/transition-delay-valid.html
new file mode 100644
index 0000000000..d6b42b9c05
--- /dev/null
+++ b/testing/web-platform/tests/css/css-transitions/parsing/transition-delay-valid.html
@@ -0,0 +1,20 @@
+<!DOCTYPE html>
+<html>
+<head>
+<meta charset="utf-8">
+<title>CSS Transitions: parsing transition-delay with valid values</title>
+<link rel="help" href="https://drafts.csswg.org/css-transitions/#propdef-transition-delay">
+<meta name="assert" content="transition-delay supports the full grammar '<time> #'.">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/support/parsing-testcommon.js"></script>
+</head>
+<body>
+<script>
+test_valid_value("transition-delay", '0s');
+test_valid_value("transition-delay", '500ms');
+test_valid_value("transition-delay", '1s, 2s');
+test_valid_value("transition-delay", '-1s, -2s');
+</script>
+</body>
+</html>
diff --git a/testing/web-platform/tests/css/css-transitions/parsing/transition-duration-computed.html b/testing/web-platform/tests/css/css-transitions/parsing/transition-duration-computed.html
new file mode 100644
index 0000000000..f82b4e6d2d
--- /dev/null
+++ b/testing/web-platform/tests/css/css-transitions/parsing/transition-duration-computed.html
@@ -0,0 +1,20 @@
+<!DOCTYPE html>
+<html>
+<head>
+<meta charset="utf-8">
+<title>CSS Transitions: getComputedStyle().transitionDuration</title>
+<link rel="help" href="https://drafts.csswg.org/css-transitions/#propdef-transition-duration">
+<meta name="assert" content="transition-duration converts to seconds.">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/support/computed-testcommon.js"></script>
+</head>
+<body>
+<div id="target"></div>
+<script>
+test_computed_value("transition-duration", "500ms", "0.5s");
+test_computed_value("transition-duration", "calc(2 * 3s)", "6s");
+test_computed_value("transition-duration", "20s, 10s");
+</script>
+</body>
+</html>
diff --git a/testing/web-platform/tests/css/css-transitions/parsing/transition-duration-invalid.html b/testing/web-platform/tests/css/css-transitions/parsing/transition-duration-invalid.html
new file mode 100644
index 0000000000..4474089bbb
--- /dev/null
+++ b/testing/web-platform/tests/css/css-transitions/parsing/transition-duration-invalid.html
@@ -0,0 +1,22 @@
+<!DOCTYPE html>
+<html>
+<head>
+<meta charset="utf-8">
+<title>CSS Transitions: parsing transition-duration with invalid values</title>
+<link rel="help" href="https://drafts.csswg.org/css-transitions/#propdef-transition-duration">
+<meta name="assert" content="transition-duration supports only the grammar '<time> #'.">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/support/parsing-testcommon.js"></script>
+</head>
+<body>
+<script>
+test_invalid_value("transition-duration", 'infinite');
+test_invalid_value("transition-duration", '-500ms');
+test_invalid_value("transition-duration", '1s 2s');
+
+test_invalid_value("transition-duration", '1s, initial');
+test_invalid_value("transition-duration", 'initial, 1s');
+</script>
+</body>
+</html>
diff --git a/testing/web-platform/tests/css/css-transitions/parsing/transition-duration-valid.html b/testing/web-platform/tests/css/css-transitions/parsing/transition-duration-valid.html
new file mode 100644
index 0000000000..311ca08669
--- /dev/null
+++ b/testing/web-platform/tests/css/css-transitions/parsing/transition-duration-valid.html
@@ -0,0 +1,19 @@
+<!DOCTYPE html>
+<html>
+<head>
+<meta charset="utf-8">
+<title>CSS Transitions: parsing transition-duration with valid values</title>
+<link rel="help" href="https://drafts.csswg.org/css-transitions/#propdef-transition-duration">
+<meta name="assert" content="transition-duration supports the full grammar '<time> #'.">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/support/parsing-testcommon.js"></script>
+</head>
+<body>
+<script>
+test_valid_value("transition-duration", '0s');
+test_valid_value("transition-duration", '500ms');
+test_valid_value("transition-duration", '1s, 2s');
+</script>
+</body>
+</html>
diff --git a/testing/web-platform/tests/css/css-transitions/parsing/transition-invalid.html b/testing/web-platform/tests/css/css-transitions/parsing/transition-invalid.html
new file mode 100644
index 0000000000..64310b13a1
--- /dev/null
+++ b/testing/web-platform/tests/css/css-transitions/parsing/transition-invalid.html
@@ -0,0 +1,24 @@
+<!DOCTYPE html>
+<html>
+<head>
+<meta charset="utf-8">
+<title>CSS Transitions: parsing transition with invalid values</title>
+<link rel="help" href="https://drafts.csswg.org/css-transitions/#transition-shorthand-property">
+<meta name="assert" content="transition supports only the grammar '<single-transition> #'.">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/support/parsing-testcommon.js"></script>
+</head>
+<body>
+<script>
+// <single-transition> = [ none | <single-transition-property> ] ||
+// <time> || <easing-function> || <time>
+test_invalid_value("transition", "1s 2s 3s");
+test_invalid_value("transition", "-1s -2s");
+
+test_invalid_value("transition", "steps(1) steps(2)");
+
+test_invalid_value("transition", "none top");
+</script>
+</body>
+</html>
diff --git a/testing/web-platform/tests/css/css-transitions/parsing/transition-property-computed.html b/testing/web-platform/tests/css/css-transitions/parsing/transition-property-computed.html
new file mode 100644
index 0000000000..1e8cfeb22d
--- /dev/null
+++ b/testing/web-platform/tests/css/css-transitions/parsing/transition-property-computed.html
@@ -0,0 +1,19 @@
+<!DOCTYPE html>
+<html>
+<head>
+<meta charset="utf-8">
+<title>CSS Transitions: getComputedStyle().transitionProperty</title>
+<link rel="help" href="https://drafts.csswg.org/css-transitions/#propdef-transition-property">
+<meta name="assert" content="transition-property keeps unrecognized properties.">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/support/computed-testcommon.js"></script>
+</head>
+<body>
+<div id="target"></div>
+<script>
+test_computed_value("transition-property", "left, top, right, bottom");
+test_computed_value("transition-property", "one, two, three");
+</script>
+</body>
+</html>
diff --git a/testing/web-platform/tests/css/css-transitions/parsing/transition-property-invalid.html b/testing/web-platform/tests/css/css-transitions/parsing/transition-property-invalid.html
new file mode 100644
index 0000000000..f71963f52c
--- /dev/null
+++ b/testing/web-platform/tests/css/css-transitions/parsing/transition-property-invalid.html
@@ -0,0 +1,32 @@
+<!DOCTYPE html>
+<html>
+<head>
+<meta charset="utf-8">
+<title>CSS Transitions: parsing transition-property with invalid values</title>
+<link rel="help" href="https://drafts.csswg.org/css-transitions/#propdef-transition-property">
+<meta name="assert" content="transition-property supports only the grammar 'none | <single-transition-property> #'.">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/support/parsing-testcommon.js"></script>
+</head>
+<body>
+<script>
+test_invalid_value("transition-property", 'one two three');
+test_invalid_value("transition-property", '1, 2, 3');
+test_invalid_value("transition-property", 'none, one');
+
+test_invalid_value("transition-property", 'initial, top');
+test_invalid_value("transition-property", 'top, initial');
+test_invalid_value("transition-property", 'inherit, top');
+test_invalid_value("transition-property", 'top, inherit');
+test_invalid_value("transition-property", 'unset, top');
+test_invalid_value("transition-property", 'top, unset');
+test_invalid_value("transition-property", 'default, top');
+test_invalid_value("transition-property", 'top, default');
+test_invalid_value("transition-property", 'revert, top');
+test_invalid_value("transition-property", 'top, revert');
+test_invalid_value("transition-property", 'revert-layer, top');
+test_invalid_value("transition-property", 'top, revert-layer');
+</script>
+</body>
+</html>
diff --git a/testing/web-platform/tests/css/css-transitions/parsing/transition-property-valid.html b/testing/web-platform/tests/css/css-transitions/parsing/transition-property-valid.html
new file mode 100644
index 0000000000..4e3894f5aa
--- /dev/null
+++ b/testing/web-platform/tests/css/css-transitions/parsing/transition-property-valid.html
@@ -0,0 +1,22 @@
+<!DOCTYPE html>
+<html>
+<head>
+<meta charset="utf-8">
+<title>CSS Transitions: parsing transition-property with valid values</title>
+<link rel="help" href="https://drafts.csswg.org/css-transitions/#propdef-transition-property">
+<meta name="assert" content="transition-property supports the full grammar 'none | <single-transition-property> #'.">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/support/parsing-testcommon.js"></script>
+</head>
+<body>
+<script>
+test_valid_value("transition-property", 'none');
+test_valid_value("transition-property", 'all');
+test_valid_value("transition-property", 'one');
+test_valid_value("transition-property", 'one-two-three');
+test_valid_value("transition-property", 'one, two, three');
+test_valid_value("transition-property", 'width, all');
+</script>
+</body>
+</html>
diff --git a/testing/web-platform/tests/css/css-transitions/parsing/transition-shorthand.html b/testing/web-platform/tests/css/css-transitions/parsing/transition-shorthand.html
new file mode 100644
index 0000000000..caffb3978c
--- /dev/null
+++ b/testing/web-platform/tests/css/css-transitions/parsing/transition-shorthand.html
@@ -0,0 +1,36 @@
+<!DOCTYPE html>
+<html>
+<head>
+<meta charset="utf-8">
+<title>CSS Transitions: transition sets longhands</title>
+<link rel="help" href="https://drafts.csswg.org/css-transitions/#transition-shorthand-property">
+<meta name="assert" content="transition supports the full grammar '<single-transition> #'.">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/support/shorthand-testcommon.js"></script>
+</head>
+<body>
+<script>
+test_shorthand_value('transition', '1s -3s cubic-bezier(0, -2, 1, 3) top', {
+ 'transition-property': 'top',
+ 'transition-duration': '1s',
+ 'transition-timing-function': 'cubic-bezier(0, -2, 1, 3)',
+ 'transition-delay': '-3s'
+});
+
+test_shorthand_value('transition', '1s -3s, cubic-bezier(0, -2, 1, 3) top', {
+ 'transition-property': 'all, top',
+ 'transition-duration': '1s, 0s',
+ 'transition-timing-function': 'ease, cubic-bezier(0, -2, 1, 3)',
+ 'transition-delay': '-3s, 0s'
+});
+
+test_shorthand_value('transition', 'cubic-bezier(0, -2, 1, 3) top, 1s -3s', {
+ 'transition-property': 'top, all',
+ 'transition-duration': '0s, 1s',
+ 'transition-timing-function': 'cubic-bezier(0, -2, 1, 3), ease',
+ 'transition-delay': '0s, -3s'
+});
+</script>
+</body>
+</html>
diff --git a/testing/web-platform/tests/css/css-transitions/parsing/transition-timing-function-computed.html b/testing/web-platform/tests/css/css-transitions/parsing/transition-timing-function-computed.html
new file mode 100644
index 0000000000..cb110549d0
--- /dev/null
+++ b/testing/web-platform/tests/css/css-transitions/parsing/transition-timing-function-computed.html
@@ -0,0 +1,38 @@
+<!DOCTYPE html>
+<html>
+<head>
+<meta charset="utf-8">
+<title>CSS Animations: getComputedStyle().transitionTimingFunction</title>
+<link rel="help" href="https://drafts.csswg.org/css-transitions/#propdef-transition-timing-function">
+<meta name="assert" content="transition-timing-function computed value is a computed <easing-function> list.">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/support/computed-testcommon.js"></script>
+</head>
+<body>
+<div id="target"></div>
+<script>
+test_computed_value("transition-timing-function", "linear");
+
+test_computed_value("transition-timing-function", "ease");
+test_computed_value("transition-timing-function", "ease-in");
+test_computed_value("transition-timing-function", "ease-out");
+test_computed_value("transition-timing-function", "ease-in-out");
+test_computed_value("transition-timing-function", "cubic-bezier(0.1, 0.2, 0.8, 0.9)");
+test_computed_value("transition-timing-function", "cubic-bezier(0, -2, 1, 3)");
+test_computed_value("transition-timing-function", "cubic-bezier(0, 0.7, 1, 1.3)");
+
+test_computed_value("transition-timing-function", "step-start", "steps(1, start)");
+test_computed_value("transition-timing-function", "step-end", "steps(1)");
+test_computed_value("transition-timing-function", "steps(4)");
+test_computed_value("transition-timing-function", "steps(4, start)");
+test_computed_value("transition-timing-function", "steps(2, end)", "steps(2)");
+test_computed_value("transition-timing-function", "steps(2, jump-start)");
+test_computed_value("transition-timing-function", "steps(2, jump-end)", "steps(2)");
+test_computed_value("transition-timing-function", "steps(2, jump-both)");
+test_computed_value("transition-timing-function", "steps(2, jump-none)");
+
+test_computed_value("transition-timing-function", "linear, ease, linear");
+</script>
+</body>
+</html>
diff --git a/testing/web-platform/tests/css/css-transitions/parsing/transition-timing-function-invalid.html b/testing/web-platform/tests/css/css-transitions/parsing/transition-timing-function-invalid.html
new file mode 100644
index 0000000000..c69b7e75d3
--- /dev/null
+++ b/testing/web-platform/tests/css/css-transitions/parsing/transition-timing-function-invalid.html
@@ -0,0 +1,38 @@
+<!DOCTYPE html>
+<html>
+<head>
+<meta charset="utf-8">
+<title>CSS Animations: parsing transition-timing-function with invalid values</title>
+<link rel="help" href="https://drafts.csswg.org/css-transitions/#propdef-transition-timing-function">
+<link rel="help" href="https://drafts.csswg.org/css-easing-1/#typedef-timing-function">
+<meta name="assert" content="transition-timing-function supports only the grammar '<timing-function> #'.">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/support/parsing-testcommon.js"></script>
+</head>
+<body>
+<script>
+test_invalid_value("transition-timing-function", "auto");
+test_invalid_value("transition-timing-function", "ease-in ease-out");
+
+test_invalid_value("transition-timing-function", "cubic-bezier(foobar)");
+test_invalid_value("transition-timing-function", "cubic-bezier(1, 2, 3)");
+test_invalid_value("transition-timing-function", "cubic-bezier(1, 2, 3, infinite)");
+test_invalid_value("transition-timing-function", "cubic-bezier(1, 2, 3, 4, 5)");
+test_invalid_value("transition-timing-function", "cubic-bezier(-0.1, 0.1, 0.5, 0.9)");
+test_invalid_value("transition-timing-function", "cubic-bezier(0.5, 0.1, 1.1, 0.9)");
+
+test_invalid_value("transition-timing-function", "steps(foobar)");
+test_invalid_value("transition-timing-function", "steps(3.3, end)");
+test_invalid_value("transition-timing-function", "steps(3, top)");
+test_invalid_value("transition-timing-function", "steps(-3, top)");
+test_invalid_value("transition-timing-function", "steps(0, jump-start)");
+test_invalid_value("transition-timing-function", "steps(0, jump-end)");
+test_invalid_value("transition-timing-function", "steps(0, jump-both)");
+test_invalid_value("transition-timing-function", "steps(1, jump-none)");
+
+test_invalid_value("transition-timing-function", "initial, cubic-bezier(0, -2, 1, 3)");
+test_invalid_value("transition-timing-function", "cubic-bezier(0, -2, 1, 3), initial");
+</script>
+</body>
+</html>
diff --git a/testing/web-platform/tests/css/css-transitions/parsing/transition-timing-function-valid.html b/testing/web-platform/tests/css/css-transitions/parsing/transition-timing-function-valid.html
new file mode 100644
index 0000000000..5402fdac19
--- /dev/null
+++ b/testing/web-platform/tests/css/css-transitions/parsing/transition-timing-function-valid.html
@@ -0,0 +1,38 @@
+<!DOCTYPE html>
+<html>
+<head>
+<meta charset="utf-8">
+<title>CSS Transitions: parsing transition-timing-function with valid values</title>
+<link rel="help" href="https://drafts.csswg.org/css-transitions/#propdef-transition-timing-function">
+<link rel="help" href="https://drafts.csswg.org/css-easing-1/#typedef-timing-function">
+<meta name="assert" content="transition-timing-function supports the full grammar '<timing-function> #'.">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/support/parsing-testcommon.js"></script>
+</head>
+<body>
+<script>
+test_valid_value("transition-timing-function", "linear");
+
+test_valid_value("transition-timing-function", "ease");
+test_valid_value("transition-timing-function", "ease-in");
+test_valid_value("transition-timing-function", "ease-out");
+test_valid_value("transition-timing-function", "ease-in-out");
+test_valid_value("transition-timing-function", "cubic-bezier(0.1, 0.2, 0.8, 0.9)");
+test_valid_value("transition-timing-function", "cubic-bezier(0, -2, 1, 3)");
+test_valid_value("transition-timing-function", "cubic-bezier(0, 0.7, 1, 1.3)");
+
+test_valid_value("transition-timing-function", "step-start", "steps(1, start)");
+test_valid_value("transition-timing-function", "step-end", "steps(1)");
+test_valid_value("transition-timing-function", "steps(4)");
+test_valid_value("transition-timing-function", "steps(4, start)");
+test_valid_value("transition-timing-function", "steps(2, end)", "steps(2)");
+test_valid_value("transition-timing-function", "steps(2, jump-start)");
+test_valid_value("transition-timing-function", "steps(2, jump-end)", "steps(2)");
+test_valid_value("transition-timing-function", "steps(2, jump-both)");
+test_valid_value("transition-timing-function", "steps(2, jump-none)");
+
+test_valid_value("transition-timing-function", "linear, ease, linear");
+</script>
+</body>
+</html>
diff --git a/testing/web-platform/tests/css/css-transitions/parsing/transition-valid.html b/testing/web-platform/tests/css/css-transitions/parsing/transition-valid.html
new file mode 100644
index 0000000000..c4651f5f12
--- /dev/null
+++ b/testing/web-platform/tests/css/css-transitions/parsing/transition-valid.html
@@ -0,0 +1,29 @@
+<!DOCTYPE html>
+<html>
+<head>
+<meta charset="utf-8">
+<title>CSS Transitions: parsing transition with valid values</title>
+<link rel="help" href="https://drafts.csswg.org/css-transitions/#transition-shorthand-property">
+<meta name="assert" content="transition supports the full grammar '<single-transition> #'.">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/support/parsing-testcommon.js"></script>
+</head>
+<body>
+<script>
+// <single-transition> = [ none | <single-transition-property> ] ||
+// <time> || <easing-function> || <time>
+test_valid_value("transition", "1s", ["1s", "all 1s ease 0s"]);
+test_valid_value("transition", "cubic-bezier(0, -2, 1, 3)", ["cubic-bezier(0, -2, 1, 3)", "all 0s cubic-bezier(0, -2, 1, 3) 0s"]);
+test_valid_value("transition", "1s -3s", ["1s -3s", "all 1s ease -3s"]);
+test_valid_value("transition", "none", ["none", "none 0s ease 0s"]);
+test_valid_value("transition", "top", ["top", "top 0s ease 0s"]);
+
+test_valid_value("transition", "1s -3s cubic-bezier(0, -2, 1, 3) top", "top 1s cubic-bezier(0, -2, 1, 3) -3s");
+test_valid_value("transition", "1s -3s, cubic-bezier(0, -2, 1, 3) top", ["1s -3s, top cubic-bezier(0, -2, 1, 3)", "all 1s ease -3s, top 0s cubic-bezier(0, -2, 1, 3) 0s"]);
+
+// TODO: Add test with a single negative time.
+// TODO: Add test with a single timing-function keyword.
+</script>
+</body>
+</html>