forked from mirrors/gecko-dev
2553719e9c
Automatic update from web-platform-tests Add additional tests for multiplication/division of mixed units (#42517) This PR adds tests for testing multiplication/division of mixed units, both in simple expressions as well as calc() inside @media query expressions. This is done in support of Interop 2024 ticket: https://github.com/web-platform-tests/interop/issues/513 -- wpt-commits: 47d5fbd0947420fa271416f2ae3e06f1c3bc0dd2 wpt-pr: 42517
77 lines
2.7 KiB
HTML
77 lines
2.7 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 'background-position' when specified with calc() function</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-3/#calc-computed-value">
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<meta content="This test verifies how 6 calc() functions are computed for 'background-position'." 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)
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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 6 consecutive tests on the same element,
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then it is necessary to 'reset' its property to an
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initial 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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}, `testing ${property_name}: ${specified_value}`);
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}
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/* verifyComputedStyle(property_name, initial_value, specified_value, expected_value) */
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verifyComputedStyle("background-position", "initial", "calc(2px + 3px) calc(4px + 5px)", "5px 9px");
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verifyComputedStyle("background-position", "initial", "calc(18px - 7px) calc(19px - 7px)", "11px 12px");
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verifyComputedStyle("background-position", "initial", "calc(4 * 5px) calc(6px * 4)", "20px 24px");
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verifyComputedStyle("background-position", "initial", "calc(100px / 4) calc(119px / 7)", "25px 17px");
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verifyComputedStyle("background-position", "initial", "calc(6px + 21%) calc(7em + 22%)", "calc(21% + 6px) calc(22% + 112px)");
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/*
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"
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(...) background-position has layout-dependent behavior for
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percentage values, and thus does not resolve percentages
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until used-value time. Due to this, background-position
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computation preserves the percentage in a calc(). (...)
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"
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https://www.w3.org/TR/css-values-3/#calc-computed-value
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*/
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verifyComputedStyle("background-position", "initial", "calc(-8px + 23%) calc(-9em + 24%)", "calc(23% - 8px) calc(24% - 144px)");
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/* verifyComputedStyle(property_name, initial_value, specified_value, expected_value) */
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}
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startTesting();
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</script>
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