47 lines
2.5 KiB
HTML
47 lines
2.5 KiB
HTML
<!doctype html>
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<meta charset="utf-8" />
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<title>:has-slotted with manual assignment</title>
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<link rel="help" href="https://github.com/w3c/csswg-drafts/pull/10586" />
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<script src="/resources/testharness.js"></script>
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<script src="/resources/testharnessreport.js"></script>
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<test-element id="host"></test-element>
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<script>
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customElements.define('test-element', class extends HTMLElement {
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connectedCallback() {
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this.attachShadow({mode: 'open', slotAssignment: 'manual'});
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this.shadowRoot.append(document.createElement('slot'))
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}
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assign(...nodes) {
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this.shadowRoot.querySelector('slot').assign(...nodes)
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}
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});
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const slot = host.shadowRoot.querySelector('slot');
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test(function () {
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assert_equals(slot.assignedNodes().length, 0, "slot element should not match :has-slotted");
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assert_equals(host.shadowRoot.querySelectorAll(':has-slotted').length, 0, "slot element should not match :has-slotted");
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assert_false(slot.matches(':has-slotted'), "slot element should not match :has-slotted");
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}, ":has-slotted does not match or querySelector with no manual assigned nodes");
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test(function () {
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host.append(document.createElement("div"));
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assert_equals(slot.assignedNodes().length, 0, "slot element should not match :has-slotted");
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assert_equals(host.shadowRoot.querySelectorAll(':has-slotted').length, 0, "slot element should not match :has-slotted");
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assert_false(slot.matches(':has-slotted'), "slot element should not match :has-slotted");
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}, ":has-slotted does not match or querySelector with no manual assigned nodes - 2");
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test(function () {
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host.assign(...host.children);
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assert_equals(slot.assignedNodes().length, 1, "slot element should match :has-slotted with 1 child node");
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assert_equals(host.shadowRoot.querySelectorAll(':has-slotted').length, 1, "slot element should match :has-slotted with 1 child node");
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assert_true(slot.matches(':has-slotted'), "slot element should match :has-slotted with 1 child node");
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}, ":has-slotted does match when a child is manually assigned");
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test(function () {
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host.assign();
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assert_equals(slot.assignedNodes().length, 0, "slot element should not match :has-slotted after empty");
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assert_equals(host.shadowRoot.querySelectorAll(':has-slotted').length, 0, "slot element should not match :has-slotted after empty");
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assert_false(slot.matches(':has-slotted'), "slot element should not match :has-slotted after empty");
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}, ":has-slotted no longer matches when no children become manually assigned");
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</script>
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