127 lines
3.4 KiB
HTML
127 lines
3.4 KiB
HTML
<!doctype html>
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<html>
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<head>
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<meta charset=utf-8>
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<title>CSS Transitions Test: Transitions do not run for an element that is not being rendered</title>
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<link rel="help" title="Starting transitions"
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href="https://drafts.csswg.org/css-transitions/#starting">
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<script src="/resources/testharness.js" type="text/javascript"></script>
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<script src="/resources/testharnessreport.js" type="text/javascript"></script>
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<script src="./support/helper.js" type="text/javascript"></script>
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</head>
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<body>
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<div id="log"></div>
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<script>
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promise_test(async t => {
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// Create element that is not rendered
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const div = addDiv(t, {
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style:
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'transition: background-color 100s;' +
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'background-color: red;' +
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'display: none',
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});
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// Attach event listeners
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div.addEventListener(
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'transitionrun',
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t.step_func(() => {
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assert_unreached('transitionrun event should not be fired');
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})
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);
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// Resolve before-change style
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getComputedStyle(div).backgroundColor;
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// Set up and resolve after-change style
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div.style.backgroundColor = 'green';
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getComputedStyle(div).backgroundColor;
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// There should be no events received for the triggered transition.
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await waitForFrame();
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await waitForFrame();
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}, 'Transitions do not run on an element not being rendered');
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test(t => {
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// Create element that is not rendered
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const div = addDiv(t, {
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style:
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'transition: background-color 100s;' +
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'background-color: red;' +
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'display: none',
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});
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// Resolve before-change style
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getComputedStyle(div).backgroundColor;
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// Make it rendered
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div.style.display = 'block';
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// Set up and resolve after-change style
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div.style.backgroundColor = 'green';
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getComputedStyle(div).backgroundColor;
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// We should have jumped immediately to the after-change style rather than
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// transitioning to it.
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assert_equals(
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getComputedStyle(div).backgroundColor,
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'rgb(0, 128, 0)',
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'No transition should run'
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);
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}, 'Transitions do not run for an element newly rendered');
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promise_test(async t => {
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// Create element
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const div = addDiv(t, {
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style: 'transition: background-color 100s; background-color: red',
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});
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// Attach event listeners
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div.addEventListener('transitionrun', t.step_func(() => {
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assert_unreached('transitionrun event should not be fired');
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}));
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// Resolve before-change style
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getComputedStyle(div).backgroundColor;
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// Set up after-change style
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div.style.backgroundColor = 'green';
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// But make the element non-rendered
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div.style.display = 'none';
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// There should be no events received for the triggered transition.
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await waitForFrame();
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await waitForFrame();
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}, 'Transitions do not run for an element newly made not rendered');
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promise_test(async t => {
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// Create element
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const div = addDiv(t, {
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style: 'transition: background-color 100s; background-color: red',
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});
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// Attach event listeners
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const eventWatcher = new EventWatcher(t, div, [
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'transitionrun',
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'transitioncancel',
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]);
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// Trigger transition
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getComputedStyle(div).backgroundColor;
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div.style.backgroundColor = 'green';
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getComputedStyle(div).backgroundColor;
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await eventWatcher.wait_for('transitionrun');
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// Make the element no longer rendered
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div.style.display = 'none';
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await eventWatcher.wait_for('transitioncancel');
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}, 'Transitions are canceled when an element is no longer rendered');
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</script>
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</body>
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</html>
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