1 files changed, 42 insertions, 0 deletions
diff --git a/browser/base/content/test/newtab/browser_newtab_bug723121.js b/browser/base/content/test/newtab/browser_newtab_bug723121.js
new file mode 100644
index 000000000..82f45ebd5
--- /dev/null
+++ b/browser/base/content/test/newtab/browser_newtab_bug723121.js
@@ -0,0 +1,42 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+add_task(function* () {
+  yield setLinks("0,1,2,3,4,5,6,7,8");
+  setPinnedLinks("");
+
+  yield* addNewTabPageTab();
+
+  yield ContentTask.spawn(gBrowser.selectedBrowser, {}, function*() {
+    let grid = content.gGrid;
+    let cell = grid.cells[0];
+    let site = cell.site.node;
+    let link = site.querySelector(".newtab-link");
+
+    function checkGridLocked(aLocked, aMessage) {
+      Assert.equal(grid.node.hasAttribute("locked"), aLocked, aMessage);
+    }
+
+    function sendDragEvent(aEventType, aTarget) {
+      let dataTransfer = new content.DataTransfer(aEventType, false);
+      let event = content.document.createEvent("DragEvent");
+      event.initDragEvent(aEventType, true, true, content, 0, 0, 0, 0, 0,
+                          false, false, false, false, 0, null, dataTransfer);
+      aTarget.dispatchEvent(event);
+    }
+
+    checkGridLocked(false, "grid is unlocked");
+
+    sendDragEvent("dragstart", link);
+    checkGridLocked(true, "grid is now locked");
+
+    sendDragEvent("dragend", link);
+    checkGridLocked(false, "grid isn't locked anymore");
+
+    sendDragEvent("dragstart", cell.node);
+    checkGridLocked(false, "grid isn't locked - dragstart was ignored");
+
+    sendDragEvent("dragstart", site);
+    checkGridLocked(false, "grid isn't locked - dragstart was ignored");
+  });
+});