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Test Info:
- This WPT test may be referenced by the following Test IDs:
- /css/css-cascade/import-conditions.html - WPT Dashboard Interop Dashboard
<!DOCTYPE html>
<title>CSS Cascade Test: import conditions</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<style>
@layer {
.target { color: red; }
}
</style>
<div id="target" class="target"></div>
<script>
const testCases = [
{
importCondition: "supports(display:block)",
matches: true
},
{
importCondition: "supports((display:flex))",
matches: true
},
{
importCondition: "supports((display:block) and (display:flex))",
matches: true
},
{
importCondition: "supports((display:block) and (foo:bar))",
matches: false
},
{
importCondition: "supports((display:block) or (display:flex))",
matches: true
},
{
importCondition: "supports((display:block) or (foo:bar))",
matches: true
},
{
importCondition: "supports(not (display: flex))",
matches: false
},
{
importCondition: "supports(display: block !important)",
matches: true
},
{
importCondition: "supports(foo:bar)",
matches: false
},
{
importCondition: "supports(display:block) (width >= 0px)",
matches: true
},
{
importCondition: "(width >= 0px) supports(foo:bar)",
matches: false
},
{
importCondition: "(width >= 0px) supports(display:block)",
matches: false
},
// selector()
{
importCondition: "supports(selector(a))",
matches: true
},
{
importCondition: "supports(selector(p a))",
matches: true
},
{
importCondition: "supports(selector(p > a))",
matches: true
},
{
importCondition: "supports(selector(p + a))",
matches: true
},
// font-tech()
{
importCondition: "supports(font-tech(color-COLRv1))",
matches: true
},
{
importCondition: "supports(font-tech(invalid))",
matches: false
},
// font-format()
{
importCondition: "supports(font-format(opentype))",
matches: true
},
{
importCondition: "supports(font-format(woff))",
matches: true
},
{
importCondition: "supports(font-format(invalid))",
matches: false
},
{
importCondition: "layer(A.B) supports(font-format(opentype))",
matches: true
},
{
importCondition: "layer supports(selector(a))",
matches: true
},
];
let target = document.getElementById("target");
for (let testCase of testCases) {
promise_test(async t => {
let styleElement = document.createElement("style");
styleElement.innerText = "@import url(data:text/css,.target{color:green}) " + testCase.importCondition + ";";
await new Promise(resolve => {
styleElement.onload = resolve;
styleElement.onerror = resolve;
document.head.appendChild(styleElement);
});
try {
assert_equals(getComputedStyle(target).color, testCase.matches ? "rgb(0, 128, 0)" : "rgb(255, 0, 0)");
} finally {
styleElement.remove();
}
}, testCase.importCondition + " is " + (testCase.matches ? "" : "not ") + "a valid import condition");
}
</script>