1 files changed, 56 insertions, 0 deletions
diff --git a/toolkit/components/places/tests/unit/test_bookmark-tags-changed_frequency.js b/toolkit/components/places/tests/unit/test_bookmark-tags-changed_frequency.js
new file mode 100644
index 0000000000..568ad43841
--- /dev/null
+++ b/toolkit/components/places/tests/unit/test_bookmark-tags-changed_frequency.js
@@ -0,0 +1,56 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+// This test checks that changing a tag for a bookmark with multiple tags
+// notifies bookmark-tags-changed event only once, and not once per tag.
+
+add_task(async function run_test() {
+  let tags = ["a", "b", "c"];
+  let uri = Services.io.newURI("http://1.moz.org/");
+
+  let bookmark = await PlacesUtils.bookmarks.insert({
+    parentGuid: PlacesUtils.bookmarks.unfiledGuid,
+    url: uri,
+    title: "Bookmark 1",
+  });
+  PlacesUtils.tagging.tagURI(uri, tags);
+
+  let promise = PromiseUtils.defer();
+
+  let bookmarksObserver = {
+    _changedCount: 0,
+    handlePlacesEvents(events) {
+      for (let event of events) {
+        switch (event.type) {
+          case "bookmark-removed":
+            if (event.guid == bookmark.guid) {
+              PlacesUtils.observers.removeListener(
+                ["bookmark-removed"],
+                this.handlePlacesEvents
+              );
+              Assert.equal(this._changedCount, 2);
+              promise.resolve();
+            }
+            break;
+          case "bookmark-tags-changed":
+            Assert.equal(event.guid, bookmark.guid);
+            this._changedCount++;
+            break;
+        }
+      }
+    },
+  };
+  bookmarksObserver.handlePlacesEvents =
+    bookmarksObserver.handlePlacesEvents.bind(bookmarksObserver);
+  PlacesUtils.observers.addListener(
+    ["bookmark-removed", "bookmark-tags-changed"],
+    bookmarksObserver.handlePlacesEvents
+  );
+
+  PlacesUtils.tagging.tagURI(uri, ["d"]);
+  PlacesUtils.tagging.tagURI(uri, ["e"]);
+
+  await promise;
+
+  await PlacesUtils.bookmarks.remove(bookmark.guid);
+});