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-rw-r--r--layout/reftests/bugs/1371130.xhtml29
1 files changed, 29 insertions, 0 deletions
diff --git a/layout/reftests/bugs/1371130.xhtml b/layout/reftests/bugs/1371130.xhtml
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+++ b/layout/reftests/bugs/1371130.xhtml
@@ -0,0 +1,29 @@
+<html xmlns="http://www.w3.org/1999/xhtml">
+ <head>
+ <script>
+ customElements.define("custom-div", class extends HTMLDivElement {
+ constructor() {
+ super();
+ this.attachShadow({ mode: "open" });
+
+ let p = document.createElement("p");
+ p.append(document.createElement("slot"));
+ let span = document.createElement("span");
+ span.textContent = "This should not be green.";
+ this.shadowRoot.append(p, span);
+ }
+ }, {
+ extends: "div",
+ });
+ </script>
+ <style>
+ span { color: red; }
+ div.x > span { color: green; }
+ </style>
+ </head>
+ <body onload="document.body.offsetTop; document.querySelector('div').className = 'x'">
+ <div is="custom-div">
+ <span>This should be green.</span>
+ </div>
+ </body>
+</html>