1 files changed, 42 insertions, 0 deletions
diff --git a/dom/base/test/test_anonymousContent_insert.html b/dom/base/test/test_anonymousContent_insert.html
new file mode 100644
index 0000000000..ce73a1521f
--- /dev/null
+++ b/dom/base/test/test_anonymousContent_insert.html
@@ -0,0 +1,42 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=1020244
+-->
+<meta charset="utf-8">
+<title>Test for Bug 1020244 - Insert content using the AnonymousContent API, several times, and don't remove it</title>
+<script src="/tests/SimpleTest/SimpleTest.js"></script>
+<link rel="stylesheet" href="/tests/SimpleTest/test.css"/>
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1020244">Mozilla Bug 1020244</a>
+<div>
+  <div id="id" class="test">text content</div>
+</div>
+  <script>
+  const INSERTED_NB = 5;
+
+  // Insert the same content several times
+  let chromeDocument = SpecialPowers.wrap(document);
+  let testElement = document.querySelector("div");
+
+  let anonymousContents = [];
+  for (let i = 0; i < INSERTED_NB; i ++) {
+    let content = chromeDocument.insertAnonymousContent();
+    content.root.appendChild(testElement.cloneNode(true));
+    // Adding an expando pointing to the document to make sure this doesn't
+    // cause leaks.
+    content.dummyExpando = testElement.ownerDocument;
+    anonymousContents.push(content);
+  }
+
+  // Make sure that modifying one of the inserted elements does not modify the
+  // other ones.
+  anonymousContents[0].root.getElementById("id").className = "updated";
+  for (let i = 1; i < INSERTED_NB; i ++) {
+    is(
+      anonymousContents[i].root.getElementById("id").className,
+      "test",
+      "Element " + i + " didn't change when element 0 was changed"
+    );
+  }
+  // Do not remove inserted elements on purpose to test for potential leaks too.
+</script>