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calc-background-position-003.html
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calc-background-position-003.html
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<!DOCTYPE html>
<meta charset="UTF-8">
<title>CSS Values and Units Test: serialization of 'background-position' when specified with calc() function</title>
<link rel="author" title="Gérard Talbot" href="http://www.gtalbot.org/BrowserBugsSection/css21testsuite/">
<link rel="help" href="https://www.w3.org/TR/css-values-4/#calc-serialize">
<meta content="This test verifies how 6 calc() functions are serialized for 'background-position'." name="assert">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<div id="target"></div>
<script>
function startTesting()
{
var targetElement = document.getElementById("target");
function verifySerialization(specified_value, serialization_expected, description)
{
test(function()
{
targetElement.style.backgroundPosition = specified_value;
assert_equals(targetElement.style.backgroundPosition, serialization_expected);
}, description);
}
/*
verifySerialization(specified_value, serialization_expected, description)
*/
verifySerialization("calc(2px + 3px) calc(4px + 5px)", "calc(5px) calc(9px)", "testing background-position: calc(2px + 3px) calc(4px + 5px)");
verifySerialization("calc(18px - 7px) calc(19px - 7px)", "calc(11px) calc(12px)", "testing background-position: calc(18px - 7px) calc(19px - 7px)");
verifySerialization("calc(4 * 5px) calc(6px * 4)", "calc(20px) calc(24px)", "testing background-position: calc(4 * 5px) calc(6px * 4)");
verifySerialization("calc(100px / 4) calc(119px / 7)", "calc(25px) calc(17px)", "testing background-position: calc(100px / 4) calc(119px / 7)");
/*
verifySerialization(specified_value, serialization_expected, description)
*/
verifySerialization("calc(6px + 21%) calc(7em + 22%)", "calc(21% + 6px) calc(22% + 7em)", "testing background-position: calc(6px + 21%) calc(7em + 22%)");
verifySerialization("calc(-8px + 23%) calc(-9em + 24%)", "calc(23% - 8px) calc(24% - 9em)", "testing background-position: calc(-8px + 23%) calc(-9em + 24%)");
/*
"
Sort the terms in the following order:
The number, if present
The percentage, if present
The dimensions, ordered by their units ASCII case-insensitive alphabetically
"
https://www.w3.org/TR/css-values-4/#math-function-serialize-a-summation
*/
}
startTesting();
</script>