mozilla-release/testing/web-platform/tests/loading/preloader-css-import-no-semicolon.tentative.html

<!DOCTYPE html>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script>
    var t = async_test('Imported inline CSS with no semicolon is not blocked on pending CSS');
</script>
<link rel=stylesheet href="resources/dummy.css?first&pipe=trickle(d1)">
<script>
    var this_script_is_neccessary_to_block_the_inline_style_processing = true;
</script>
<style>
@import url("resources/dummy.css?second")
</style>
<script>
    window.addEventListener("load", t.step_func_done(() => {
        let entries = performance.getEntriesByType('resource');
        let first;
        let second;
        for (entry of entries) {
            if (entry.name.includes("first")) {
                first = entry;
            }
            if (entry.name.includes("second")) {
                second = entry;
            }
        }
        assert_true(first.responseEnd > second.startTime, "The second resource start time should not be blocked on the first resource response");
    }));
</script>