1 files changed, 24 insertions, 0 deletions
diff --git a/browser/components/places/tests/browser/browser_library_tree_leak.js b/browser/components/places/tests/browser/browser_library_tree_leak.js
new file mode 100644
index 0000000000..9e552f5c31
--- /dev/null
+++ b/browser/components/places/tests/browser/browser_library_tree_leak.js
@@ -0,0 +1,24 @@
+/* -*- Mode: indent-tabs-mode: nil; js-indent-level: 2 -*- */
+/* vim: set sts=2 sw=2 et tw=80: */
+
+"use strict";
+
+add_task(async function bookmark_leak_window() {
+  // A library window has two trees after selecting a bookmark item:
+  // A left tree (#placesList) and a right tree (#placeContent).
+  // Upon closing the window, both trees are destructed, in an unspecified
+  // order. In bug 1520047, a memory leak was observed when the left tree
+  // was destroyed last.
+
+  let library = await promiseLibrary("BookmarksToolbar");
+  let tree = library.document.getElementById("placesList");
+  tree.selectItems(["toolbar_____"]);
+
+  await synthesizeClickOnSelectedTreeCell(tree);
+  await promiseLibraryClosed(library);
+
+  Assert.ok(
+    true,
+    "Closing a window after selecting a node in the tree should not cause a leak"
+  );
+});