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<!DOCTYPE html>
<link rel="help" href="https://drafts.csswg.org/css-values-4/#trig-funcs">
<link rel="help" href="https://drafts.csswg.org/css-values-4/#numbers">
<link rel="help" href="https://drafts.csswg.org/css-values-4/#calc-serialize">
<link rel="author" title="Apple Inc">
<link rel="author" title="Seokho Song" href="seokho@chromium.org">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="../support/numeric-testcommon.js"></script>
<div id=target></div>
<script>
function test_serialization(specified, expected, approx = false) {
let options = {type: "number"};
if (approx) {
options.approx = 1e-6;
}
test_math_specified(specified, `calc(${expected})`, options);
test_math_computed(specified, expected == "NaN" ? "0" : expected, options);
test_math_used(specified, expected == "NaN" ? "0" : expected, options);
}
//test case, expected, approx
var test_array = [
["cos(0)" , "1"],
["sin(0)" , "0"],
["tan(0)" , "0"],
["calc(sin(0) + 0.5)" , "0.5"],
["calc(sin(0) + cos(0) + tan(0))" , "1"],
["calc(cos(0) + 0.5)" , "1.5"],
["calc(tan(0) + 0.5)" , "0.5"],
["cos(0deg)" , "1"],
["sin(0deg)" , "0"],
["tan(0deg)" , "0"],
["sin(30deg)" , "0.5"],
["sin(0.523599)" , "0.5"],
["sin(0.523599rad)" , "0.5"],
["sin(33.333333grad)" , "0.5"],
["sin(0.08333333turn)" , "0.5"],
["cos(60deg)" , "0.5"],
["cos(66.66666666grad)" , "0.5"],
["cos(1.047197551)" , "0.5"],
["cos(1.047197551rad)" , "0.5"],
["cos(0.16666666666turn)" , "0.5"],
["tan(45deg)" , "1"],
["tan(50grad)" , "1"],
["tan(0.78539816)" , "1"],
["tan(0.78539816rad)" , "1"],
["tan(0.125turn)" , "1"],
["sin(180deg)" , "0", true],
["cos(180deg)" , "-1"],
["tan(180deg)" , "0", true],
["sin(270deg)" , "-1"],
["cos(270deg)" , "0", true],
["sin(-180deg)" , "0", true],
["cos(-180deg)" , "-1"],
["tan(-180deg)" , "0", true],
["sin(-270deg)" , "1"],
["cos(-270deg)" , "0", true],
["calc(sin(30deg) + cos(60deg) + tan(45deg))" , "2"],
["calc(sin(infinity))" , "NaN"],
["calc(cos(infinity))" , "NaN"],
["calc(tan(infinity))" , "NaN"],
["calc(sin(-infinity))" , "NaN"],
["calc(cos(-infinity))" , "NaN"],
["calc(tan(-infinity))" , "NaN"],
["calc(sin(NaN))" , "NaN"],
["calc(cos(NaN))" , "NaN"],
["calc(tan(NaN))" , "NaN"],
];
for (let [test, expected, approx] of test_array) {
test_serialization(test, expected, approx);
test_serialization(`calc(${test})`, expected, approx);
}
</script>
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