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317 lines
10 KiB
HTML
317 lines
10 KiB
HTML
<!DOCTYPE html>
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<title>Image set parsing</title>
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<link rel="author" title="Noam Rosenthal" href="mailto:noam.j.rosenthal@gmail.com">
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<link rel="author" title="Traian Captan" href="mailto:tcaptan@chromium.org">
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<link rel="help" href="https://drafts.csswg.org/css-images-4/#image-set-notation">
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<meta name="assert" content="General image-set parsing follows CSS Images 4 rules.">
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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/parsing-testcommon.js"></script>
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<body>
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<script>
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function test_valid_value_variants(property, value, serializedValue) {
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if (!serializedValue) serializedValue = value;
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test_valid_value(property, value, serializedValue);
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// The '-webkit-' prefixed 'image-set' is expected to serialize to the same
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// value as standard 'image-set'.
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// https://drafts.csswg.org/css-images-4/#deprecated
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// "Implementations must accept -webkit-image-set() as a parse-time alias of
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// image-set(). (It’s a valid value, with identical arguments to image-set(),
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// and is turned into image-set() during parsing.)"
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test_valid_value(property, "-webkit-" + value, serializedValue);
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}
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function test_invalid_value_variants(property, value) {
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test_invalid_value(property, value);
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test_invalid_value(property, "-webkit-" + value);
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}
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function test_default_resolution_parsing() {
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// Based on the spec, the resolution is optional and should default
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// to 1x if not specified.
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// This set of tests verify this expectation.
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// Test when the only image is missing it's resolution
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test_valid_value_variants(
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'background-image',
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'image-set(url(foo))',
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'image-set(url("foo") 1x)'
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);
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// Test when the 1st of 2 images is missing it's resolution
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test_valid_value_variants(
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'background-image',
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'image-set(url(foo), url(bar) 1x)',
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'image-set(url("foo") 1x, url("bar") 1x)'
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);
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// Test when the 2nd of 2 images is missing it's resolution
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test_valid_value_variants(
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'background-image',
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'image-set(url(foo) 1x, url(bar))',
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'image-set(url("foo") 1x, url("bar") 1x)'
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);
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// Test when both images are missing their resolutions
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test_valid_value_variants(
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'background-image',
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'image-set(url(foo), url(bar))',
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'image-set(url("foo") 1x, url("bar") 1x)'
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);
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// Test when the middle of 3 images is missing it's resolution
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test_valid_value_variants(
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'background-image',
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'image-set(url(foo) 1x, url(bar), url(baz) 2x)',
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'image-set(url("foo") 1x, url("bar") 1x, url("baz") 2x)'
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);
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}
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function test_resolution_units_parsing() {
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test_valid_value_variants(
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'background-image',
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'image-set(url("example.png") 1x)'
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);
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test_valid_value_variants(
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'background-image',
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'image-set(url("example.png") calc(2x * 3))',
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'image-set(url("example.png") calc(6dppx))'
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);
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test_valid_value_variants(
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'background-image',
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'image-set(url("example.png") 1dppx)'
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);
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test_valid_value_variants(
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'background-image',
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'image-set(url("example.png") calc(1dppx * 1))',
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'image-set(url("example.png") calc(1dppx))'
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);
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test_valid_value_variants(
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'background-image',
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'image-set(url("example.png") 1dpi)'
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);
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test_valid_value_variants(
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'background-image',
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'image-set(url("example.png") calc(96dpi * 2))',
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'image-set(url("example.png") calc(2dppx))'
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);
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test_valid_value_variants(
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'background-image',
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'image-set(url("example.png") 1dpcm)'
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);
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test_valid_value_variants(
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'background-image',
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'image-set(url("example.png") calc(1dpcm * 96/2.54))',
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'image-set(url("example.png") calc(1dppx))'
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);
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test_valid_value_variants(
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'background-image',
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'image-set(url("example.png") 1x, url("example.png") 2dppx, "example.png" 250dpi, "example.png" 1dpcm)',
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'image-set(url("example.png") 1x, url("example.png") 2dppx, url("example.png") 250dpi, url("example.png") 1dpcm)'
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);
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test_valid_value_variants(
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'content',
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'image-set(url("example.png") 1dpi)'
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);
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test_valid_value_variants(
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'content',
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'image-set(url("example.png") calc(1 * 96dpi))',
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'image-set(url("example.png") calc(1dppx))'
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);
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test_invalid_value_variants(
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'background-image',
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'image-set(url("example.png") 1invalidResUnit)'
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);
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test_invalid_value_variants(
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'background-image',
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'image-set(url("example.png") calc(3 * 4))'
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);
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test_invalid_value_variants(
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'background-image',
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'image-set(url("example.png") calc(2 - 1))'
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);
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test_invalid_value_variants(
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'background-image',
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'image-set(url("example.png") calc(2x - 1))'
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);
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test_invalid_value_variants(
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'background-image',
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'image-set(url("example.png") calc(1 + 4dpi))'
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);
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}
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function test_non_positive_resolutions_parsing() {
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test_valid_value_variants(
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'background-image',
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'image-set(url("example.png") 0x)'
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);
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test_valid_value_variants(
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'background-image',
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'image-set(url("example.png") 0dppx)'
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);
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test_valid_value_variants(
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'background-image',
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'image-set(url("example.png") 0dpi)'
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);
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test_valid_value_variants(
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'background-image',
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'image-set(url("example.png") 0dpcm)'
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);
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test_invalid_value_variants(
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'background-image',
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'image-set(url("example.png") -1x)'
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);
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test_invalid_value_variants(
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'background-image',
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'image-set(url("example.png") -3dppx)'
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);
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test_invalid_value_variants(
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'background-image',
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'image-set(url("example.png") -96dpi)'
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);
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test_invalid_value_variants(
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'background-image',
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'image-set(url("example.png") -113dpcm)'
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);
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}
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function test_gradient_images_parsing() {
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test_valid_value_variants(
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'background-image',
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"image-set(linear-gradient(black, white) 1x)"
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);
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test_valid_value_variants(
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'background-image',
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"image-set(repeating-linear-gradient(red, blue 25%) 1x)"
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);
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test_valid_value_variants(
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'background-image',
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"image-set(radial-gradient(black, white) 1x)"
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);
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test_valid_value_variants(
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'background-image',
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"image-set(repeating-radial-gradient(red, blue 25%) 1x)"
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);
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test_valid_value_variants(
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'background-image',
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"image-set(conic-gradient(black, white) 1x)"
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);
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test_valid_value_variants(
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'background-image',
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"image-set(repeating-conic-gradient(red, blue 25%) 1x)"
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);
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test_valid_value_variants(
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'content',
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'image-set(linear-gradient(black, white) 1x, url("example.png") 4x)'
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);
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test_valid_value_variants(
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'content',
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'image-set(url("example.png") 192dpi, linear-gradient(black, white) 1x)'
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);
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test_invalid_value_variants(
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'cursor',
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"image-set(linear-gradient(black, white) 1x)"
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);
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test_invalid_value_variants(
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'background-image',
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"image-set(linear-gradient(red) 1x)"
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);
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}
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function test_image_type_parsing() {
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test_valid_value_variants(
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'background-image',
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'image-set(url("example.png") 1x type("image/png"))'
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);
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test_valid_value_variants(
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'background-image',
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"image-set(url(example.png) type('image/png'))",
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'image-set(url("example.png") 1x type("image/png"))'
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);
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test_valid_value_variants(
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'background-image',
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"image-set(url(example.png) type('image/png') 1x)",
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'image-set(url("example.png") 1x type("image/png"))'
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);
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test_valid_value_variants(
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'background-image',
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"image-set(url(example.png) 1x type('image/jpeg'))",
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'image-set(url("example.png") 1x type("image/jpeg"))'
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);
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test_invalid_value_variants(
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'background-image',
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"image-set(url(example.png) type(image/png))"
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);
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test_invalid_value_variants(
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'background-image',
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"image-set(url(example.png) type('image/png') type('image/png'))"
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);
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test_invalid_value_variants(
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'background-image',
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"image-set(url(example.png) type('image/png' 'image/png'))"
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);
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test_invalid_value_variants(
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'background-image',
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"image-set(url(example.png) type(url('image/png')))"
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);
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test_invalid_value_variants(
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'background-image',
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"image-set(url(example.png) 1xtype('image/png'))"
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);
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test_invalid_value_variants(
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'background-image',
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"image-set(type('image/png') url(example.png) 1x)"
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);
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}
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function test_no_images_set_nesting() {
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// Spec definition:
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// "The image-set() function can not be nested inside of itself,
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// either directly or indirectly (as an argument to another <image> type)."
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// Direct nesting
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test_invalid_value_variants(
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'background-image',
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"image-set(image-set(url(example.png)) 2x)"
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);
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// Indirect nesting
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test_invalid_value_variants(
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'background-image',
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"image-set(image(image-set(url(example.png)) 2x) 2x)"
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);
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}
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function test_image_set_parsing() {
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test_valid_value_variants('background-image', "image-set(url(example.png) 1x)", 'image-set(url("example.png") 1x)');
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test_valid_value_variants('background-image', "image-set('example.jpg' 1x)", 'image-set(url("example.jpg") 1x)');
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test_valid_value_variants('background-image', "image-set(url(example.png) 1x, 'example.png' 2x)", 'image-set(url("example.png") 1x, url("example.png") 2x)');
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test_valid_value_variants('background-image', "image-set(url(example.png) 1dpcm, 'example.png' 2x)", 'image-set(url("example.png") 1dpcm, url("example.png") 2x)');
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test_valid_value_variants('background-image', "image-set('example.jpeg' 222dpi, url(example.png) 3.5x)", 'image-set(url("example.jpeg") 222dpi, url("example.png") 3.5x)');
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test_valid_value_variants('content', 'image-set(url("example.png") 1x)', 'image-set(url("example.png") 1x)');
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test_valid_value_variants('content', 'image-set(url("example.png") 1x, "example.png" 3x)', 'image-set(url("example.png") 1x, url("example.png") 3x)');
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test_valid_value_variants('border-image-source', 'image-set(url("example.png") 1x)', 'image-set(url("example.png") 1x)');
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test_valid_value_variants('border-image-source', 'image-set(url("example.png") 1x, "example.png" 3x)', 'image-set(url("example.png") 1x, url("example.png") 3x)');
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test_invalid_value_variants('background-image', "image-set(none, url(example.png) 1x)");
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test_invalid_value_variants('background-image', "image-set()");
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test_invalid_value_variants('background-image', "image-set('example.jpeg' 92pid url(example.png) 1x)");
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test_invalid_value_variants('background-image', "image-set(url(example.png) 1x url(example.jpeg))");
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test_invalid_value_variants('background-image', "image-set(url(example.png) 1x 2x)");
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test_default_resolution_parsing();
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test_resolution_units_parsing();
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test_non_positive_resolutions_parsing();
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test_gradient_images_parsing();
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test_image_type_parsing();
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test_no_images_set_nesting();
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}
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test_image_set_parsing();
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</script>
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