<!DOCTYPE html>
<meta charset="UTF-8">
<title>border-image-width interpolation</title>
<link rel="help" href="https://drafts.csswg.org/css-backgrounds-3/#border-image-width">
<meta name="assert" content="border-image-width supports animation by computed value">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/css/support/interpolation-testcommon.js"></script>
<style>
.parent {
border-image-width: 100px;
}
.target {
width: 80px;
height: 80px;
background-color: black;
display: inline-block;
border: 10px;
border-image-source: linear-gradient(45deg, red, blue, green);
border-image-width: 10px;
}
.expected {
background-color: green;
margin-right: 2px;
}
</style>
<body></body>
<script>
test_interpolation({
property: 'border-image-width',
from: neutralKeyframe,
to: '20px',
}, [
{at: -0.3, expect: '7px'},
{at: 0, expect: '10px'},
{at: 0.3, expect: '13px'},
{at: 0.6, expect: '16px'},
{at: 1, expect: '20px'},
{at: 1.5, expect: '25px'},
{at: 5, expect: '60px'},
{at: 10, expect: '110px'},
]);
test_no_interpolation({
property: 'border-image-width',
from: 'initial',
to: '20px',
});
test_interpolation({
property: 'border-image-width',
from: 'inherit',
to: '20px',
}, [
{at: -0.3, expect: '124px'},
{at: 0, expect: '100px'},
{at: 0.3, expect: '76px'},
{at: 0.6, expect: '52px'},
{at: 1, expect: '20px'},
{at: 1.5, expect: '0px'},
{at: 5, expect: '0px'},
{at: 10, expect: '0px'},
]);
test_no_interpolation({
property: 'border-image-width',
from: 'unset',
to: '20px',
});
test_interpolation({
property: 'border-image-width',
from: '0px',
to: '20px'
}, [
{at: -0.3, expect: '0px'}, // CSS border-image-width can't be negative.
{at: 0, expect: '0px'},
{at: 0.3, expect: '6px'},
{at: 0.6, expect: '12px'},
{at: 1, expect: '20px'},
{at: 1.5, expect: '30px'},
{at: 5, expect: '100px'},
{at: 10, expect: '200px'}
]);
test_interpolation({
property: 'border-image-width',
from: '0%',
to: '20%'
}, [
{at: -0.3, expect: '0%'}, // CSS border-image-width can't be negative.
{at: 0, expect: '0%'},
{at: 0.3, expect: '6%'},
{at: 0.6, expect: '12%'},
{at: 1, expect: '20%'},
{at: 1.5, expect: '30%'},
{at: 5, expect: '100%'},
{at: 10, expect: '200%'}
]);
test_interpolation({
property: 'border-image-width',
from: '0',
to: '20'
}, [
{at: -0.3, expect: '0'}, // CSS border-image-width can't be negative.
{at: 0, expect: '0'},
{at: 0.3, expect: '6'},
{at: 0.6, expect: '12'},
{at: 1, expect: '20'},
{at: 1.5, expect: '30'},
{at: 5, expect: '100'},
{at: 10, expect: '200'}
]);
test_interpolation({
property: 'border-image-width',
from: '10px 20% 30 40px',
to: '80px 70% 60 50px'
}, [
{at: -0.3, expect: '0px 5% 21 37px'}, // CSS border-image-width can't be negative.
{at: 0, expect: '10px 20% 30 40px'},
{at: 0.3, expect: '31px 35% 39 43px'},
{at: 0.6, expect: '52px 50% 48 46px'},
{at: 1, expect: '80px 70% 60 50px'},
{at: 1.5, expect: '115px 95% 75 55px'},
{at: 5, expect: '360px 270% 180 90px'},
{at: 10, expect: '710px 520% 330 140px'}
]);
test_interpolation({
property: 'border-image-width',
from: '10%',
to: '20px'
}, [
// Percentages are relative to the size of the border image area, which is 120px.
{at: -0.3, expect: 'calc(13% + -6px)'}, // Should be parsed as 16px - 6px = 10px
{at: 0, expect: '10%'}, // Should be parsed as 12px
{at: 0.3, expect: 'calc(7% + 6px)'}, // Should be parsed as 8px + 6px = 14px
{at: 0.6, expect: 'calc(4% + 12px)'}, // Should be parsed as 5px + 12px = 17px
{at: 1, expect: 'calc(0% + 20px)'},
{at: 1.5, expect: 'calc(-5% + 30px)'}, // Should be parsed as -6px + 30px = 24px
]);
test_interpolation({
property: 'border-image-width',
from: '10px',
to: '20%'
}, [
// Percentages are relative to the size of the border image area, which is 120px.
{at: -0.3, expect: 'calc(13px + -6%)'}, // Should be parsed as 13px - 7px = 6px
{at: 0, expect: 'calc(0% + 10px)'},
{at: 0.3, expect: 'calc(7px + 6%)'}, // Should be parsed as 7px + 7px = 14px
{at: 0.6, expect: 'calc(4px + 12%)'}, // Should be parsed as 4px + 14px = 18px
{at: 1, expect: '20%'}, // Should be parsed as 24px
{at: 1.5, expect: 'calc(-5px + 30%)'}, // Should be parsed as -5px + 36px = 31px
]);
test_interpolation({
property: 'border-image-width',
from: '10px auto auto 20',
to: '110px auto auto 120'
}, [
{at: -0.3, expect: ' 0px auto auto 0'},
{at: 0, expect: ' 10px auto auto 20'},
{at: 0.3, expect: ' 40px auto auto 50'},
{at: 0.6, expect: ' 70px auto auto 80'},
{at: 1, expect: '110px auto auto 120'},
{at: 1.5, expect: '160px auto auto 170'},
]);
test_no_interpolation({
property: 'border-image-width',
from: '10px auto auto 20',
to: '110px auto 120 auto'
});
test_no_interpolation({
property: 'border-image-width',
from: '10px',
to: '20'
});
test_no_interpolation({
property: 'border-image-width',
from: '10',
to: '20px'
});
test_no_interpolation({
property: 'border-image-width',
from: '10%',
to: '20'
});
test_no_interpolation({
property: 'border-image-width',
from: '10',
to: '20%'
});
</script>
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