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e945fed0d4
Automatic update from web-platform-tests Added 1 test about z-index and fractional values -- useless change to trigger a rebuild make sure to squash before merging -- wpt-commits: 6d6e82c1e7ad2632f91b167fc286000f50e0ad95, 88615a15e4acdb02646750dcdf3f1606ecbcf1b8 wpt-pr: 15401
59 lines
1.9 KiB
HTML
59 lines
1.9 KiB
HTML
<!DOCTYPE html>
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<meta charset="UTF-8">
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<title>CSS Values and Units Test: computed value of 'z-index' when specified with calc() function and fractional values</title>
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<link rel="author" title="Gérard Talbot" href="http://www.gtalbot.org/BrowserBugsSection/css21testsuite/">
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<link rel="help" href="https://www.w3.org/TR/css-values-4/#calc-range">
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<meta name="flags" content="">
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<meta content="This test verifies how 2 calc() functions are computed for 'z-index' when involved expressions end up being numbers halfway between adjacent integers." name="assert">
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<script src="/resources/testharness.js"></script>
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<script src="/resources/testharnessreport.js"></script>
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<div id="target"></div>
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<script>
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function startTesting()
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{
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var targetElement = document.getElementById("target");
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function verifyComputedStyle(property_name, initial_value, specified_value, expected_value, description)
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{
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test(function()
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{
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targetElement.style.setProperty(property_name, initial_value);
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/*
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The purpose of the initial_value is to act as a fallback
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value in case the calc() function in the specified value
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fails or in case it generates an invalid value. Since we
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are running 2 consecutive tests on the same element,
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then it is necessary to reset its property to an initial
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value.
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*/
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targetElement.style.setProperty(property_name, specified_value);
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assert_equals(getComputedStyle(targetElement)[property_name], expected_value);
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}, description);
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}
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/* verifyComputedStyle(property_name, initial_value, specified_value, expected_value, description) */
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verifyComputedStyle("z-index", "auto", "calc(3 / 2)", "2", "testing z-index: calc(3 / 2)");
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verifyComputedStyle("z-index", "auto", "calc(-3 / 2)", "-1", "testing z-index: calc(-3 / 2)");
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}
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startTesting();
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</script>
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