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-rw-r--r--layout/reftests/bugs/334829-1b-shadow.xhtml35
1 files changed, 35 insertions, 0 deletions
diff --git a/layout/reftests/bugs/334829-1b-shadow.xhtml b/layout/reftests/bugs/334829-1b-shadow.xhtml
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--- /dev/null
+++ b/layout/reftests/bugs/334829-1b-shadow.xhtml
@@ -0,0 +1,35 @@
+<html xmlns="http://www.w3.org/1999/xhtml">
+<head>
+ <script type="application/x-javascript">
+ customElements.define("custom-element", class extends HTMLElement {
+ constructor() {
+ super();
+ const template = document.getElementById("template");
+ const shadowRoot = this.attachShadow({mode: "open"})
+ .appendChild(template.content.cloneNode(true));
+ }
+ });
+ function runTest() {
+ var div = document.getElementById("testDiv");
+
+ // First we have to make sure that we've looked up the primary frame for
+ // the previous child span. Appending text to it should do the trick.
+ div.firstChild.
+ appendChild(document.createTextNode("This is text in a div "));
+
+ // Now flush out reflow
+ document.body.offsetWidth;
+
+ var node = document.createElementNS("http://www.w3.org/1999/xhtml",
+ "span");
+ div.appendChild(node);
+ node.appendChild(document.createTextNode("This text should appear"));
+ }
+ </script>
+</head>
+
+<body onload="runTest()">
+<template id="binding"><span><slot/></span></template>
+<custom-element id="testDiv" style="width: 0; display: block;"><span></span></custom-element>
+</body>
+</html>