<!DOCTYPE html>
<title>calc-size() on flex-basis</title>
<link rel="help" href="https://drafts.csswg.org/css-values-5/#calc-size">
<link rel="help" href="https://drafts.csswg.org/css-flexbox/#flex-basis-property">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<link rel="stylesheet" href="/fonts/ahem.css">
<style>
#container {
display: flex;
flex-direction: column;
font-family: 'Ahem';
font-size: 20px;
height: 200px;
}
#target {
height: 50px;
flex-grow: 0;
flex-shrink: 0;
}
</style>
<div id="container">
<!--
Given the contents of #target (and the Ahem font), intrinsic height is 1ch or 20px
-->
<div id="target">hello</div>
</div>
<script>
setup({explicit_done: true});
document.fonts.ready.then(()=> {
let basic_tests = [
/* I think flex layout rules require expectations be >= 20px */
{ value: "274px", expected: "274px" },
{ value: "min-content", expected: "20px" },
{ value: "fit-content", expected: "20px" },
{ value: "max-content", expected: "20px" },
{ value: "content", expected: "20px" },
{ value: "auto", expected: "50px" },
{ value: "calc-size(any, 357px)", expected: "357px" },
{ value: "calc-size(any, 220%)", expected: "440px" },
{ value: "calc-size(max-content, 350%)", expected: "700px" },
{ value: "calc-size(fit-content, 172px)", expected: "172px" },
{ value: "calc-size(37px, 193px)", expected: "193px" },
{ value: "calc-size(83px, size * 3)", expected: "249px" },
{ value: "calc-size(min-content, size / 0.25)", expected: "80px" },
{ value: "calc-size(max-content, size * 5.2)", expected: "104px" },
{ value: "calc-size(fit-content, size / 4 + 60px)", expected: "65px" },
{ value: "calc-size(stretch, size * 2 - 10%)", expected: "90px" },
{ value: "calc-size(30px, 15em)", expected: "300px" },
{ value: "calc-size(calc-size(any, 30px), 15em)", expected: "300px" },
{ value: "calc-size(calc-size(2in, 30px), 15em)", expected: "300px" },
{ value: "calc-size(calc-size(min-content, 30px), 15em)", expected: "300px" },
{ value: "calc-size(calc-size(min-content, size), size * 3)", expected: "60px" },
{ value: "calc-size(auto, size)", expected: "50px" },
{ value: "calc-size(auto, size * 1.6 + 23px)", expected: "103px" },
{ value: "calc-size(content, size)", expected: "20px" },
{ value: "calc-size(content, size * 1.6 + 23px)", expected: "55px" },
{ value: "auto", height_value: "auto", expected: "20px" },
{ value: "calc-size(auto, size * 3)", height_value: "auto", expected: "60px" },
{ value: "auto", height_value: "calc-size(auto, size * 7)", expected: "140px" },
{ value: "calc-size(auto, size * 7)", height_value: "calc-size(auto, size * 3)", expected: "420px" },
{ value: "auto", height_value: "calc-size(max-content, size + 12px)", expected: "32px" },
{ value: "calc-size(auto, size + 4px)", height_value: "calc-size(fit-content, size + 12px)", expected: "36px" },
{ value: "372px", height_value: "calc-size(fit-content, size + 12px)", expected: "372px" },
{ value: "calc-size(content, size * 7)", height_value: "321px", expected: "140px" },
];
const container = document.getElementById("container");
const target = document.getElementById("target");
const target_cs = getComputedStyle(target);
for (const obj of basic_tests) {
test((t) => {
target.style.removeProperty("flex-basis");
target.style.flexBasis = obj.value;
assert_not_equals(target.style.flexBasis, "", "flex-basis value is accepted");
target.style.removeProperty("height");
if ("height_value" in obj) {
target.style.height = obj.height_value;
assert_not_equals(target.style.height, "", "height value is accepted");
}
assert_equals(target_cs.height, obj.expected, "resulting height is correct");
}, `resolved value for height resulting from flex-basis: ${obj.value}${obj.height_value ? ` and height: ${obj.height_value}` : ""}`);
}
done();
});
</script>
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