<!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="GĂ©rard 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 5 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%)", "20px", "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>