css/css-backgrounds/parsing/background-image-computed.sub.html

<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>CSS Backgrounds and Borders: getComputedStyle().backgroundImage</title>
<link rel="help" href="https://drafts.csswg.org/css-backgrounds/#background-image">
<meta name="assert" content="background-image computed value is as specified.">
<meta name="assert" content="Colors and lengths are computed, with radii clamped.">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/css/support/computed-testcommon.js"></script>
<style>
  #target {
    font-size: 40px;
  }
</style>
</head>
<body>
<!-- target is used by test_computed_value -->
<div id="target"></div>
<script>
test_computed_value("background-image", "none");

test_computed_value("background-image", 'url("http://{{host}}/")');
test_computed_value("background-image", 'none, url("http://{{host}}/")');

test_computed_value('background-image', 'linear-gradient(to left bottom, red, blue)', 'linear-gradient(to left bottom, rgb(255, 0, 0), rgb(0, 0, 255))');

test_computed_value('background-image', 'radial-gradient(rgb(255, 0, 0), rgb(0, 0, 255))');
test_computed_value('background-image', 'radial-gradient(at center, red, blue)', 'radial-gradient(rgb(255, 0, 0), rgb(0, 0, 255))');
test_computed_value('background-image', 'radial-gradient(at 50%, red, blue)', 'radial-gradient(rgb(255, 0, 0), rgb(0, 0, 255))');
test_computed_value('background-image', 'radial-gradient(at 10px 10px, rgb(255, 0, 0), rgb(0, 0, 255))');
test_computed_value('background-image', 'radial-gradient(farthest-side, rgb(255, 0, 0), rgb(0, 0, 255))');
test_computed_value('background-image', 'radial-gradient(farthest-side at 10px 10px, rgb(255, 0, 0), rgb(0, 0, 255))');
test_computed_value('background-image', 'radial-gradient(farthest-corner, red, blue)', 'radial-gradient(rgb(255, 0, 0), rgb(0, 0, 255))');
test_computed_value('background-image', 'radial-gradient(farthest-corner at center, red, blue)', 'radial-gradient(rgb(255, 0, 0), rgb(0, 0, 255))');
test_computed_value('background-image', 'radial-gradient(farthest-corner at 50%, red, blue)', 'radial-gradient(rgb(255, 0, 0), rgb(0, 0, 255))');
test_computed_value('background-image', 'radial-gradient(farthest-corner at 10px 10px, red, blue)', 'radial-gradient(at 10px 10px, rgb(255, 0, 0), rgb(0, 0, 255))');

test_computed_value('background-image', 'radial-gradient(10px at 20px 30px, rgb(255, 0, 0), rgb(0, 0, 255))');
test_computed_value('background-image', 'radial-gradient(circle calc(-0.5em + 10px) at calc(-1em + 10px) calc(-2em + 10px), red, blue)', 'radial-gradient(0px at -30px -70px, rgb(255, 0, 0), rgb(0, 0, 255))');
test_computed_value('background-image', 'radial-gradient(ellipse calc(-0.5em + 10px) calc(0.5em + 10px) at 20px 30px, red, blue)', 'radial-gradient(0px 30px at 20px 30px, rgb(255, 0, 0), rgb(0, 0, 255))');
test_computed_value('background-image', 'radial-gradient(ellipse calc(0.5em + 10px) calc(-0.5em + 10px) at 20px 30px, red, blue)', 'radial-gradient(30px 0px at 20px 30px, rgb(255, 0, 0), rgb(0, 0, 255))');

test_computed_value('background-image', 'conic-gradient(rgb(255, 0, 0), rgb(0, 0, 255))');
test_computed_value('background-image', 'conic-gradient(at center, red, blue)', 'conic-gradient(rgb(255, 0, 0), rgb(0, 0, 255))');
test_computed_value('background-image', 'conic-gradient(at 50%, red, blue)', 'conic-gradient(rgb(255, 0, 0), rgb(0, 0, 255))');
test_computed_value('background-image', 'conic-gradient(at 10px 10px, rgb(255, 0, 0), rgb(0, 0, 255))');
test_computed_value('background-image', 'conic-gradient(from 0deg, red, blue)', 'conic-gradient(rgb(255, 0, 0), rgb(0, 0, 255))');
test_computed_value('background-image', 'conic-gradient(from 0deg at center, red, blue)', 'conic-gradient(rgb(255, 0, 0), rgb(0, 0, 255))');
test_computed_value('background-image', 'conic-gradient(from 0deg at 50%, red, blue)', 'conic-gradient(rgb(255, 0, 0), rgb(0, 0, 255))');
test_computed_value('background-image', 'conic-gradient(from 0deg at 10px 10px, red, blue)', 'conic-gradient(at 10px 10px, rgb(255, 0, 0), rgb(0, 0, 255))');
test_computed_value('background-image', 'conic-gradient(from 45deg, rgb(255, 0, 0), rgb(0, 0, 255))');
test_computed_value('background-image', 'conic-gradient(from 45deg at center, red, blue)', 'conic-gradient(from 45deg, rgb(255, 0, 0), rgb(0, 0, 255))');
test_computed_value('background-image', 'conic-gradient(from 45deg at 50%, red, blue)', 'conic-gradient(from 45deg, rgb(255, 0, 0), rgb(0, 0, 255))');
test_computed_value('background-image', 'conic-gradient(from 45deg at 10px 10px, red, blue)', 'conic-gradient(from 45deg at 10px 10px, rgb(255, 0, 0), rgb(0, 0, 255))');
test_computed_value('background-image', 'conic-gradient(from -45deg, rgb(255, 0, 0), rgb(0, 0, 255))');
test_computed_value('background-image', 'conic-gradient(from -45deg at center, red, blue)', 'conic-gradient(from -45deg, rgb(255, 0, 0), rgb(0, 0, 255))');
test_computed_value('background-image', 'conic-gradient(from -45deg at 50%, red, blue)', 'conic-gradient(from -45deg, rgb(255, 0, 0), rgb(0, 0, 255))');
test_computed_value('background-image', 'conic-gradient(from -45deg at 10px 10px, red, blue)', 'conic-gradient(from -45deg at 10px 10px, rgb(255, 0, 0), rgb(0, 0, 255))');
</script>
</body>
</html>