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Automatic update from web-platform-tests Fix background-position-interpolation.html for initial/unset The initial/unset value for background-position is 0% 0%, so any interpolation from/to that involves a calc with a percentage in it. By the calc spec, calcs with percentages in them are not resolved when getting the computed value - even if the percentage is 0%. The test shouldn't pass in Chrome after this CL, but does anyway as it resolves the expected values to not include percentages either! See https://bugzilla.mozilla.org/show_bug.cgi?id=1574913 for where we discovered the test was wrong. Bug: 1002430 Change-Id: Ibacb8f9e1745f13cd2fe92894ac0f8e67e3228fa Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1795842 Reviewed-by: Rune Lillesveen <futhark@chromium.org> Commit-Queue: Stephen McGruer <smcgruer@chromium.org> Cr-Commit-Position: refs/heads/master@{#695277} -- wpt-commits: 3be71869e61972776ed03f04544bf8b21c8608db wpt-pr: 18965
137 lines
6.9 KiB
HTML
137 lines
6.9 KiB
HTML
<!DOCTYPE html>
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<meta charset="UTF-8">
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<link rel="help" href="https://drafts.csswg.org/css-backgrounds-3/#background-position">
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<meta name="test" content="background-position supports animation as a repeatable list">
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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="/css/support/interpolation-testcommon.js"></script>
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<style>
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.parent {
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background-position: 60px 60px;
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}
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.target {
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width: 120px;
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height: 120px;
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display: inline-block;
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border: 2px solid black;
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background-repeat: no-repeat;
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background-image: radial-gradient(20px circle at 20px 20px, red 18px, transparent),
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radial-gradient(20px circle at 20px 20px, yellow 18px, transparent),
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radial-gradient(20px circle at 20px 20px, lime 18px, transparent),
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radial-gradient(20px circle at 20px 20px, blue 18px, transparent);
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background-position: 40px 40px;
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}
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.expected {
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margin-right: 10px;
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}
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</style>
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<body></body>
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<script>
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test_interpolation({
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property: 'background-position',
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from: neutralKeyframe,
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to: '80px 80px, 80px 80px, 80px 80px, 80px 80px',
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}, [
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{at: -0.25, expect: '30px 30px, 30px 30px, 30px 30px, 30px 30px'},
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{at: 0, expect: '40px 40px, 40px 40px, 40px 40px, 40px 40px'},
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{at: 0.25, expect: '50px 50px, 50px 50px, 50px 50px, 50px 50px'},
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{at: 0.5, expect: '60px 60px, 60px 60px, 60px 60px, 60px 60px'},
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{at: 0.75, expect: '70px 70px, 70px 70px, 70px 70px, 70px 70px'},
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{at: 1, expect: '80px 80px, 80px 80px, 80px 80px, 80px 80px'},
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{at: 1.25, expect: '90px 90px, 90px 90px, 90px 90px, 90px 90px'},
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]);
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// background-position's initial value is 0% 0%, and calcs involving percentages
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// are never resolved by the calc spec (even when the percentage is 0%).
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test_interpolation({
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property: 'background-position',
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from: 'initial',
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to: '80px 80px, 80px 80px, 80px 80px, 80px 80px',
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}, [
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{at: -0.25, expect: 'calc(0% - 20px) calc(0% - 20px), calc(0% - 20px) calc(0% - 20px), calc(0% - 20px) calc(0% - 20px), calc(0% - 20px) calc(0% - 20px)'},
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{at: 0, expect: '0% 0%, 0% 0%, 0% 0%, 0% 0%'},
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{at: 0.25, expect: 'calc(0% + 20px) calc(0% + 20px), calc(0% + 20px) calc(0% + 20px), calc(0% + 20px) calc(0% + 20px), calc(0% + 20px) calc(0% + 20px)'},
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{at: 0.5, expect: 'calc(0% + 40px) calc(0% + 40px), calc(0% + 40px) calc(0% + 40px), calc(0% + 40px) calc(0% + 40px), calc(0% + 40px) calc(0% + 40px)'},
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{at: 0.75, expect: 'calc(0% + 60px) calc(0% + 60px), calc(0% + 60px) calc(0% + 60px), calc(0% + 60px) calc(0% + 60px), calc(0% + 60px) calc(0% + 60px)'},
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{at: 1, expect: 'calc(0% + 80px) calc(0% + 80px), calc(0% + 80px) calc(0% + 80px), calc(0% + 80px) calc(0% + 80px), calc(0% + 80px) calc(0% + 80px)'},
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{at: 1.25, expect: 'calc(0% + 100px) calc(0% + 100px), calc(0% + 100px) calc(0% + 100px), calc(0% + 100px) calc(0% + 100px), calc(0% + 100px) calc(0% + 100px)'},
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]);
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test_interpolation({
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property: 'background-position',
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from: 'inherit',
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to: '80px 80px, 80px 80px, 80px 80px, 80px 80px',
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}, [
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{at: -0.25, expect: '55px 55px, 55px 55px, 55px 55px, 55px 55px'},
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{at: 0, expect: '60px 60px, 60px 60px, 60px 60px, 60px 60px'},
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{at: 0.25, expect: '65px 65px, 65px 65px, 65px 65px, 65px 65px'},
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{at: 0.5, expect: '70px 70px, 70px 70px, 70px 70px, 70px 70px'},
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{at: 0.75, expect: '75px 75px, 75px 75px, 75px 75px, 75px 75px'},
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{at: 1, expect: '80px 80px, 80px 80px, 80px 80px, 80px 80px'},
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{at: 1.25, expect: '85px 85px, 85px 85px, 85px 85px, 85px 85px'},
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]);
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// background-position is not inherited, so 'unset' is equivalent to initial.
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test_interpolation({
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property: 'background-position',
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from: 'unset',
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to: '80px 80px, 80px 80px, 80px 80px, 80px 80px',
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}, [
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{at: -0.25, expect: 'calc(0% - 20px) calc(0% - 20px), calc(0% - 20px) calc(0% - 20px), calc(0% - 20px) calc(0% - 20px), calc(0% - 20px) calc(0% - 20px)'},
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{at: 0, expect: '0% 0%, 0% 0%, 0% 0%, 0% 0%'},
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{at: 0.25, expect: 'calc(0% + 20px) calc(0% + 20px), calc(0% + 20px) calc(0% + 20px), calc(0% + 20px) calc(0% + 20px), calc(0% + 20px) calc(0% + 20px)'},
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{at: 0.5, expect: 'calc(0% + 40px) calc(0% + 40px), calc(0% + 40px) calc(0% + 40px), calc(0% + 40px) calc(0% + 40px), calc(0% + 40px) calc(0% + 40px)'},
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{at: 0.75, expect: 'calc(0% + 60px) calc(0% + 60px), calc(0% + 60px) calc(0% + 60px), calc(0% + 60px) calc(0% + 60px), calc(0% + 60px) calc(0% + 60px)'},
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{at: 1, expect: 'calc(0% + 80px) calc(0% + 80px), calc(0% + 80px) calc(0% + 80px), calc(0% + 80px) calc(0% + 80px), calc(0% + 80px) calc(0% + 80px)'},
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{at: 1.25, expect: 'calc(0% + 100px) calc(0% + 100px), calc(0% + 100px) calc(0% + 100px), calc(0% + 100px) calc(0% + 100px), calc(0% + 100px) calc(0% + 100px)'},
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]);
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// Test equal number of position values as background images.
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test_interpolation({
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property: 'background-position',
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from: '0px 0px, 0px 0px, 0px 0px, 0px 0px',
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to: '80px 80px, 80px 80px, 80px 80px, 80px 80px',
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}, [
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{at: -0.25, expect: '-20px -20px, -20px -20px, -20px -20px, -20px -20px'},
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{at: 0, expect: ' 0px 0px, 0px 0px, 0px 0px, 0px 0px'},
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{at: 0.25, expect: ' 20px 20px, 20px 20px, 20px 20px, 20px 20px'},
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{at: 0.5, expect: ' 40px 40px, 40px 40px, 40px 40px, 40px 40px'},
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{at: 0.75, expect: ' 60px 60px, 60px 60px, 60px 60px, 60px 60px'},
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{at: 1, expect: ' 80px 80px, 80px 80px, 80px 80px, 80px 80px'},
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{at: 1.25, expect: '100px 100px, 100px 100px, 100px 100px, 100px 100px'},
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]);
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// Test single position value repeated over background images.
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test_interpolation({
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property: 'background-position',
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from: 'top 0px left 0px',
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to: 'left 80px top 80px',
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}, [
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{at: -0.25, expect: '-20px -20px, -20px -20px, -20px -20px, -20px -20px'},
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{at: 0, expect: ' 0px 0px, 0px 0px, 0px 0px, 0px 0px'},
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{at: 0.25, expect: ' 20px 20px, 20px 20px, 20px 20px, 20px 20px'},
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{at: 0.5, expect: ' 40px 40px, 40px 40px, 40px 40px, 40px 40px'},
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{at: 0.75, expect: ' 60px 60px, 60px 60px, 60px 60px, 60px 60px'},
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{at: 1, expect: ' 80px 80px, 80px 80px, 80px 80px, 80px 80px'},
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{at: 1.25, expect: '100px 100px, 100px 100px, 100px 100px, 100px 100px'},
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]);
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// Test mismatched numbers of position values.
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test_interpolation({
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property: 'background-position',
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from: '0px 0px, 80px 0px',
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to: '40px 40px, 80px 80px, 0px 80px',
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}, [
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{at: -0.25, expect: '-10px -10px, 80px -20px, 0px -20px, 90px -10px'},
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{at: 0, expect: ' 0px 0px, 80px 0px, 0px 0px, 80px 0px'},
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{at: 0.25, expect: ' 10px 10px, 80px 20px, 0px 20px, 70px 10px'},
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{at: 0.5, expect: ' 20px 20px, 80px 40px, 0px 40px, 60px 20px'},
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{at: 0.75, expect: ' 30px 30px, 80px 60px, 0px 60px, 50px 30px'},
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{at: 1, expect: ' 40px 40px, 80px 80px, 0px 80px, 40px 40px'},
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{at: 1.25, expect: ' 50px 50px, 80px 100px, 0px 100px, 30px 50px'},
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]);
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</script>
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