forked from mirrors/gecko-dev
654ee69c03
Automatic update from web-platform-tests WebKit export of https://bugs.webkit.org/show_bug.cgi?id=250401 (#37853) -- wpt-commits: 31d6b43aa2b1294ff6cb098777c11a2e13bc4866 wpt-pr: 37853
39 lines
No EOL
1.5 KiB
HTML
39 lines
No EOL
1.5 KiB
HTML
<!DOCTYPE html>
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<link rel="help" href="https://drafts.css-houdini.org/css-properties-values-api-1">
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<script src="/resources/testharness.js"></script>
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<script src="/resources/testharnessreport.js"></script>
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<script src="../resources/utils.js"></script>
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<div id="target"></div>
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<script>
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test(() => {
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const customProperty = generate_name();
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CSS.registerProperty({
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name: customProperty,
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syntax: "<number>",
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inherits: false,
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initialValue: "1"
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});
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// Create transitions for our custom property with
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// a longer list of transition-duration values.
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const target = document.getElementById("target");
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target.style.transitionProperty = customProperty;
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target.style.transitionDuration = "100s, 200s";
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// Trigger a style change by getting the custom property
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// value from the computed style.
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getComputedStyle(target).getPropertyValue(customProperty);
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// Set a new value for the custom property, which will yield a
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// transition.
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target.style.setProperty(customProperty, "2");
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const animations = target.getAnimations();
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assert_equals(animations.length, 1, "A single transition was generated");
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const transition = animations[0];
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assert_class_string(transition, "CSSTransition", "A CSSTransition is running");
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assert_equals(transition.transitionProperty, customProperty);
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}, 'Using a single "transition-property" value set to a custom property and two "transition-duration" values correctly yields a CSS Transition.');
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</script> |