File: animation-duration-computed.html

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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>CSS Animations: getComputedStyle().animationDuration</title>
<link rel="help" href="https://drafts.csswg.org/css-animations/#propdef-animation-duration">
<meta name="assert" content="animation-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("animation-duration", "500ms", "0.5s");
test_computed_value("animation-duration", "calc(2 * 3s)", "6s");
test_computed_value("animation-duration", "20s, 10s");

// https://github.com/w3c/csswg-drafts/issues/6530
test_computed_value("animation-duration", "auto", "0s");
test_computed_value("animation-duration", "auto, auto", "0s, 0s");

// Test that the resolved value of the specified animation-duration
// is as expected given some value for animation-timeline.
function test_auto_duration(duration, timeline, expected) {
  test((t) => {
    t.add_cleanup(() => {
      target.style = "";
    });
    target.style.animationDuration = duration;
    target.style.animationTimeline = timeline;
    assert_equals(expected, getComputedStyle(target).animationDuration);
  }, `Resolved value of animation-duration:${duration} with animation-timeline:${timeline}`);
}

test_auto_duration("auto", "auto", "0s");
test_auto_duration("auto", "auto, auto", "auto");
test_auto_duration("auto", "--t", "auto");
test_auto_duration("auto", "--t, --t2", "auto");
test_auto_duration("auto", "none", "auto");
test_auto_duration("auto", "scroll()", "auto");
test_auto_duration("auto", "view()", "auto");
test_auto_duration("0s", "auto", "0s");
test_auto_duration("0s", "auto, auto", "0s");

</script>
</body>
</html>