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Bug 1577592 - Test case for Shadow Parts not applying with fragment containing XUL element r=emilio

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Differential Revision: https://phabricator.services.mozilla.com/D44034

--HG--
extra : moz-landing-system : lando
This commit is contained in:
Brian Grinstead 2019-08-29 22:28:23 +00:00
parent 7a79edccc2
commit 081ae7cb3f
2 changed files with 45 additions and 0 deletions
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1
toolkit/content/tests/chrome/chrome.ini
View File

@ -104,6 +104,7 @@ skip-if = toolkit == "cocoa"
[test_contextmenu_list.xul]
[test_custom_element_base.xul]
[test_custom_element_delay_connection.xul]
[test_custom_element_parts.html]
[test_deck.xul]
[test_dialogfocus.xul]
[test_edit_contextmenu.html]

44
toolkit/content/tests/chrome/test_custom_element_parts.html Normal file
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@ -0,0 +1,44 @@
<!DOCTYPE HTML>
<html>
<head>
<meta charset="utf-8">
<title><!-- Shadow Parts issue with xul/xbl domparser --></title>
<script src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"></script>
<link rel="stylesheet" href="chrome://mochikit/content/tests/SimpleTest/test.css"/>
<style>custom-button::part(foo) { background: red; }</style>
<script>
add_task(async function test() {
// A simplified version of what MozXULElement.parseXULToFragment does
let parser = new DOMParser();
parser.forceEnableXULXBL();
let doc = parser.parseFromString(`<box xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"><box part="foo">there</box></box>`, `application/xml`);
let range = doc.createRange();
range.selectNodeContents(doc.querySelector("box"));
let frag = range.extractContents();
customElements.define("custom-button", class extends HTMLElement {
constructor() {
super();
this.attachShadow({mode: "open"});
this.shadowRoot.appendChild(document.importNode(frag, true));
}
});
let button = document.createElement("custom-button");
document.body.appendChild(button);
let box = button.shadowRoot.querySelector("box");
// XXX: this fixes it
// box.removeAttribute("part");
// box.setAttribute("part", "foo");
is(window.getComputedStyle(box).getPropertyValue("background-color"), "rgb(255, 0, 0)", "part applied");
});
</script>
</head>
<body>
<p id="display"></p>
<div id="content" style="display: none"></div>
<pre id="test"></pre>
</body>
</html>