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<!DOCTYPE html>
<meta charset="UTF-8">
<title>CSS Values and Units Test: computed value of 'letter-spacing' when specified with calc() function</title>
<!--
Original test is:
https://chromium.googlesource.com/chromium/src/+/c825d655f6aaf73484f9d56e9012793f5b9668cc/third_party/WebKit/LayoutTests/css3/calc/letter-spacing.html
-->
<link rel="author" title="Gérard Talbot" href="http://www.gtalbot.org/BrowserBugsSection/css21testsuite/">
<link rel="help" href="https://www.w3.org/TR/css3-values/#calc-computed-value">
<meta name="flags" content="invalid">
<meta content="This test verifies how 6 calc() functions are computed for 'letter-spacing'." name="assert">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<div id="target"></div>
<script>
function startTesting()
{
function verifyComputedStyle(property_name, initial_value, specified_value, expected_value, description)
{
var elemTarget = document.getElementById("target");
test(function()
{
elemTarget.style.setProperty(property_name, initial_value);
/*
In exactly 4 out of the 6 sub-tests, the initial_value will
act as a fallback value because the calc() function in the
specified value generates an invalid value. Since we are
running 6 consecutive tests on the same element, then
it is necessary to 'reset' its property to an initial
value.
*/
elemTarget.style.setProperty(property_name, specified_value);
assert_equals(getComputedStyle(elemTarget)[property_name], expected_value, specified_value + ' should compute to ' + expected_value);
}, description);
}
/* verifyComputedStyle(property_name, initial_value, specified_value, expected_value, description) */
verifyComputedStyle("letter-spacing", "20px", "calc(1 + 1px)", "20px", "testing letter-spacing: calc(1 + 1px)");
verifyComputedStyle("letter-spacing", "20px", "calc(1 + 100%)", "20px", "testing letter-spacing: calc(1 + 100%)");
verifyComputedStyle("letter-spacing", "20px", "calc(100%)", "100%", "testing letter-spacing: calc(100%)");
verifyComputedStyle("letter-spacing", "20px", "calc(10px) bla", "20px", "testing letter-spacing: calc(10px) bla");
verifyComputedStyle("letter-spacing", "20px", "calc(bla) 10px", "20px", "testing letter-spacing: calc(bla) 10px");
verifyComputedStyle("letter-spacing", "initial", "calc(10px)", "10px", "testing letter-spacing: calc(10px)");
}
startTesting();
</script>
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