css/css-images/image-set/image-set-computed.sub.html - external/github.com/web-platform-tests/wpt - Git at Google

 <!DOCTYPE html>
 <title>Image set computed value</title>
 <link rel="help" href="https://drafts.csswg.org/css-images-4/#serialization">
 <link rel="help" href="https://www.w3.org/TR/cssom-1/#serializing-css-values">
 <link rel="help" href="https://www.w3.org/TR/css-values-4/#canonical-unit">
 <link rel="help" href="https://www.w3.org/TR/css-values-4/#resolution">
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
 <script src="/css/support/computed-testcommon.js"></script>
 <body>
 <div id="target"></div>
 <script>
 function test_computed_value_variants(property, specified, computed) {
   if (!computed) computed = specified;
   test_computed_value(property, specified, computed);
   test_computed_value(property, "-webkit-" + specified, computed);
 }

 function test_calculated_resolution_units() {
   test_computed_value_variants(
     'background-image',
     "image-set(url('http://{{host}}/example.png') calc(1x * 2))",
     'image-set(url("http://{{host}}/example.png") 2dppx)'
   );

   test_computed_value_variants(
     'background-image',
     "image-set(url('http://{{host}}/example.png') calc(6dppx / 3))",
     'image-set(url("http://{{host}}/example.png") 2dppx)'
   );

   test_computed_value_variants(
     'background-image',
     "image-set(url('http://{{host}}/example.png') calc(100dpi - 4dpi))",
     'image-set(url("http://{{host}}/example.png") 1dppx)'
   );

   test_computed_value_variants(
     'background-image',
     "image-set(url('http://{{host}}/example.png') calc(37dpcm + 0.79532dpcm))",
     [
       'image-set(url("http://{{host}}/example.png") 1dppx)',
       'image-set(url("http://{{host}}/example.png") 1.000001dppx)'
     ]
   );

   test_computed_value_variants(
     'background-image',
     "image-set(url('http://{{host}}/example.png') calc(-1 * 1x))",
     'image-set(url("http://{{host}}/example.png") 0dppx)'
   );
 }

 // The resolution unit is expected to be converted to the canonical unit 'dppx'
 // for computed style.
 test_computed_value_variants('background-image', "image-set(url(http://{{host}}/example.png) 1x)", 'image-set(url("http://{{host}}/example.png") 1dppx)');
 test_computed_value_variants('background-image', "image-set(url(http://{{host}}/example.png) 1x, 'http://{{host}}/example.png' 2x)", 'image-set(url("http://{{host}}/example.png") 1dppx, url("http://{{host}}/example.png") 2dppx)');
 test_computed_value_variants('background-image', 'image-set(url("http://{{host}}/example.png") 1dppx)');
 test_computed_value_variants('background-image', "image-set(url(http://{{host}}/example.png) 48dpi)", 'image-set(url("http://{{host}}/example.png") 0.5dppx)');
 test_computed_value_variants('background-image', "image-set(url(http://{{host}}/example.png) 2400dpcm, 'http://{{host}}/example.png' 2x)", 'image-set(url("http://{{host}}/example.png") 63.5dppx, url("http://{{host}}/example.png") 2dppx)');
 test_computed_value_variants('background-image', "image-set('http://{{host}}/example.jpeg' 240dpi, url(http://{{host}}/example.png) 3.5x)", 'image-set(url("http://{{host}}/example.jpeg") 2.5dppx, url("http://{{host}}/example.png") 3.5dppx)');
 test_computed_value_variants('background-image', "image-set(linear-gradient(black, white) 1x)", "image-set(linear-gradient(rgb(0, 0, 0), rgb(255, 255, 255)) 1dppx)");
 test_computed_value_variants('background-image', "image-set(url(http://{{host}}/example.png) 1x type('image/png'))", 'image-set(url("http://{{host}}/example.png") 1dppx type("image/png"))');
 test_computed_value_variants('background-image', "image-set(url(http://{{host}}/example.png) type('image/png'))", 'image-set(url("http://{{host}}/example.png") 1dppx type("image/png"))');
 test_computed_value_variants('background-image', "image-set(url(http://{{host}}/example.png) type('image/png') 1x)", 'image-set(url("http://{{host}}/example.png") 1dppx type("image/png"))');
 test_computed_value_variants('content', "image-set(url('http://{{host}}/example.png') 192dpi, linear-gradient(black, white) 1x)", 'image-set(url("http://{{host}}/example.png") 2dppx, linear-gradient(rgb(0, 0, 0), rgb(255, 255, 255)) 1dppx)');

 // Unsupported type should still serialize.
 test_computed_value_variants('background-image', 'image-set(url("http://{{host}}/example.png") type("image/unsupported"))', 'image-set(url("http://{{host}}/example.png") 1dppx type("image/unsupported"))');
 test_computed_value_variants('background-image', 'image-set(url("http://{{host}}/example.png") 2x type("image/unsupported"), url("http://{{host}}/example.png") 1x type("image/unsupported"))', 'image-set(url("http://{{host}}/example.png") 2dppx type("image/unsupported"), url("http://{{host}}/example.png") 1dppx type("image/unsupported"))');

 test_calculated_resolution_units();
 </script>
	<!DOCTYPE html>
	<title>Image set computed value</title>
	<link rel="help" href="https://drafts.csswg.org/css-images-4/#serialization">
	<link rel="help" href="https://www.w3.org/TR/cssom-1/#serializing-css-values">
	<link rel="help" href="https://www.w3.org/TR/css-values-4/#canonical-unit">
	<link rel="help" href="https://www.w3.org/TR/css-values-4/#resolution">
	<script src="/resources/testharness.js"></script>
	<script src="/resources/testharnessreport.js"></script>
	<script src="/css/support/computed-testcommon.js"></script>
	<body>
	<div id="target"></div>
	<script>
	function test_computed_value_variants(property, specified, computed) {
	if (!computed) computed = specified;
	test_computed_value(property, specified, computed);
	test_computed_value(property, "-webkit-" + specified, computed);
	}

	function test_calculated_resolution_units() {
	test_computed_value_variants(
	'background-image',
	"image-set(url('http://{{host}}/example.png') calc(1x * 2))",
	'image-set(url("http://{{host}}/example.png") 2dppx)'
	);

	test_computed_value_variants(
	'background-image',
	"image-set(url('http://{{host}}/example.png') calc(6dppx / 3))",
	'image-set(url("http://{{host}}/example.png") 2dppx)'
	);

	test_computed_value_variants(
	'background-image',
	"image-set(url('http://{{host}}/example.png') calc(100dpi - 4dpi))",
	'image-set(url("http://{{host}}/example.png") 1dppx)'
	);

	test_computed_value_variants(
	'background-image',
	"image-set(url('http://{{host}}/example.png') calc(37dpcm + 0.79532dpcm))",
	[
	'image-set(url("http://{{host}}/example.png") 1dppx)',
	'image-set(url("http://{{host}}/example.png") 1.000001dppx)'
	]
	);

	test_computed_value_variants(
	'background-image',
	"image-set(url('http://{{host}}/example.png') calc(-1 * 1x))",
	'image-set(url("http://{{host}}/example.png") 0dppx)'
	);
	}

	// The resolution unit is expected to be converted to the canonical unit 'dppx'
	// for computed style.
	test_computed_value_variants('background-image', "image-set(url(http://{{host}}/example.png) 1x)", 'image-set(url("http://{{host}}/example.png") 1dppx)');
	test_computed_value_variants('background-image', "image-set(url(http://{{host}}/example.png) 1x, 'http://{{host}}/example.png' 2x)", 'image-set(url("http://{{host}}/example.png") 1dppx, url("http://{{host}}/example.png") 2dppx)');
	test_computed_value_variants('background-image', 'image-set(url("http://{{host}}/example.png") 1dppx)');
	test_computed_value_variants('background-image', "image-set(url(http://{{host}}/example.png) 48dpi)", 'image-set(url("http://{{host}}/example.png") 0.5dppx)');
	test_computed_value_variants('background-image', "image-set(url(http://{{host}}/example.png) 2400dpcm, 'http://{{host}}/example.png' 2x)", 'image-set(url("http://{{host}}/example.png") 63.5dppx, url("http://{{host}}/example.png") 2dppx)');
	test_computed_value_variants('background-image', "image-set('http://{{host}}/example.jpeg' 240dpi, url(http://{{host}}/example.png) 3.5x)", 'image-set(url("http://{{host}}/example.jpeg") 2.5dppx, url("http://{{host}}/example.png") 3.5dppx)');
	test_computed_value_variants('background-image', "image-set(linear-gradient(black, white) 1x)", "image-set(linear-gradient(rgb(0, 0, 0), rgb(255, 255, 255)) 1dppx)");
	test_computed_value_variants('background-image', "image-set(url(http://{{host}}/example.png) 1x type('image/png'))", 'image-set(url("http://{{host}}/example.png") 1dppx type("image/png"))');
	test_computed_value_variants('background-image', "image-set(url(http://{{host}}/example.png) type('image/png'))", 'image-set(url("http://{{host}}/example.png") 1dppx type("image/png"))');
	test_computed_value_variants('background-image', "image-set(url(http://{{host}}/example.png) type('image/png') 1x)", 'image-set(url("http://{{host}}/example.png") 1dppx type("image/png"))');
	test_computed_value_variants('content', "image-set(url('http://{{host}}/example.png') 192dpi, linear-gradient(black, white) 1x)", 'image-set(url("http://{{host}}/example.png") 2dppx, linear-gradient(rgb(0, 0, 0), rgb(255, 255, 255)) 1dppx)');

	// Unsupported type should still serialize.
	test_computed_value_variants('background-image', 'image-set(url("http://{{host}}/example.png") type("image/unsupported"))', 'image-set(url("http://{{host}}/example.png") 1dppx type("image/unsupported"))');
	test_computed_value_variants('background-image', 'image-set(url("http://{{host}}/example.png") 2x type("image/unsupported"), url("http://{{host}}/example.png") 1x type("image/unsupported"))', 'image-set(url("http://{{host}}/example.png") 2dppx type("image/unsupported"), url("http://{{host}}/example.png") 1dppx type("image/unsupported"))');

	test_calculated_resolution_units();
	</script>