chromium/third_party/blink/web_tests/external/wpt/css/css-shadow-parts/pseudo-classes-after-part.html

<!DOCTYPE html>
<title>Pseudo-classes allowed after ::part()</title>
<link rel="help" href="https://drafts.csswg.org/css-shadow-parts/">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="../support/parsing-testcommon.js"></script>

<script>
"use strict";

// Test that non-structural pseudo-classes are allowed after ::part().
test_valid_selector("::part(mypart):active");
test_valid_selector("::part(mypart):any-link");
test_valid_selector("::part(mypart):autofill");
test_valid_selector("::part(mypart):checked");
test_valid_selector("::part(mypart):closed");
test_valid_selector("::part(mypart):default");
test_valid_selector("::part(mypart):defined");
test_valid_selector("::part(mypart):dir(ltr)");
test_valid_selector("::part(mypart):disabled");
test_valid_selector("::part(mypart):enabled");
test_valid_selector("::part(mypart):focus");
test_valid_selector("::part(mypart):focus-visible");
test_valid_selector("::part(mypart):focus-within");
test_valid_selector("::part(mypart):fullscreen");
test_valid_selector("::part(mypart):future");
test_valid_selector("::part(mypart):hover");
test_valid_selector("::part(mypart):indeterminate");
test_valid_selector("::part(mypart):in-range");
test_valid_selector("::part(mypart):invalid");
test_valid_selector("::part(mypart):lang(en)");
test_valid_selector("::part(mypart):link");
test_valid_selector("::part(mypart):modal");
test_valid_selector("::part(mypart):open");
test_valid_selector("::part(mypart):optional");
test_valid_selector("::part(mypart):out-of-range");
test_valid_selector("::part(mypart):past");
test_valid_selector("::part(mypart):paused");
test_valid_selector("::part(mypart):picture-in-picture");
test_valid_selector("::part(mypart):placeholder-shown");
test_valid_selector("::part(mypart):playing");
test_valid_selector("::part(mypart):popover-open");
test_valid_selector("::part(mypart):read-only");
test_valid_selector("::part(mypart):read-write");
test_valid_selector("::part(mypart):required");
test_valid_selector("::part(mypart):state(mystate)");
test_valid_selector("::part(mypart):target");
test_valid_selector("::part(mypart):user-invalid");
test_valid_selector("::part(mypart):user-valid");
test_valid_selector("::part(mypart):valid");
test_valid_selector("::part(mypart):visited");
test_valid_selector("::part(mypart):xr-overlay");

// Test that the @page pseudo-classes are not supported after ::part().
test_invalid_selector("::part(mypart):left");
test_invalid_selector("::part(mypart):right");
test_invalid_selector("::part(mypart):first");

// Test that structural pseudo-classes are not allowed after ::part().
test_invalid_selector("::part(mypart):empty");
test_invalid_selector("::part(mypart):first-child");
test_invalid_selector("::part(mypart):first-of-type");
test_invalid_selector("::part(mypart):last-child");
test_invalid_selector("::part(mypart):last-of-type");
test_invalid_selector("::part(mypart):nth-child(1)");
test_invalid_selector("::part(mypart):nth-last-child(1)");
test_invalid_selector("::part(mypart):nth-last-of-type(1)");
test_invalid_selector("::part(mypart):nth-of-type(1)");
test_invalid_selector("::part(mypart):only-child");
test_invalid_selector("::part(mypart):only-of-type");
// These are structural because they only match the root element.
test_invalid_selector("::part(mypart):active-view-transition");
test_invalid_selector("::part(mypart):active-view-transition-type(mytype)");

// Test that pseudo-classes that match based on tree information are not allowed after ::part.
test_invalid_selector("::part(mypart):host");
test_invalid_selector("::part(mypart):host-context(:hover)");
test_invalid_selector("::part(mypart):has(p)");
test_invalid_selector("::part(mypart):has(:hover)");
test_invalid_selector("::part(mypart):scope)");

// Test that :not() applies appropriate constraints for being after ::part(),
// but that :is() and :where() (which accept <forgiving-selector-list>) do
// not.
// Note that the serialization behavior of the last two is as-resolved in
// https://github.com/w3c/csswg-drafts/issues/8356 but it doesn't appear to be
// specified yet.
test_valid_selector("::part(mypart):not(:hover)")
test_valid_selector("::part(mypart):is(:hover)")
test_valid_selector("::part(mypart):where(:hover)")
test_invalid_selector("::part(mypart):not(:first-child)")
test_valid_selector("::part(mypart):is(:first-child)")
test_valid_selector("::part(mypart):where(:first-child)")

</script>