1 files changed, 49 insertions, 0 deletions
diff --git a/browser/base/content/test/general/browser_tabReorder.js b/browser/base/content/test/general/browser_tabReorder.js
new file mode 100644
index 000000000..9e0503e95
--- /dev/null
+++ b/browser/base/content/test/general/browser_tabReorder.js
@@ -0,0 +1,49 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/ */
+
+function test() {
+  let initialTabsLength = gBrowser.tabs.length;
+
+  let newTab1 = gBrowser.selectedTab = gBrowser.addTab("about:robots", {skipAnimation: true});
+  let newTab2 = gBrowser.selectedTab = gBrowser.addTab("about:about", {skipAnimation: true});
+  let newTab3 = gBrowser.selectedTab = gBrowser.addTab("about:config", {skipAnimation: true});
+  registerCleanupFunction(function () {
+    while (gBrowser.tabs.length > initialTabsLength) {
+      gBrowser.removeTab(gBrowser.tabs[initialTabsLength]);
+    }
+  });
+
+  is(gBrowser.tabs.length, initialTabsLength + 3, "new tabs are opened");
+  is(gBrowser.tabs[initialTabsLength], newTab1, "newTab1 position is correct");
+  is(gBrowser.tabs[initialTabsLength + 1], newTab2, "newTab2 position is correct");
+  is(gBrowser.tabs[initialTabsLength + 2], newTab3, "newTab3 position is correct");
+
+  let scriptLoader = Cc["@mozilla.org/moz/jssubscript-loader;1"].
+                     getService(Ci.mozIJSSubScriptLoader);
+  let EventUtils = {};
+  scriptLoader.loadSubScript("chrome://mochikit/content/tests/SimpleTest/EventUtils.js", EventUtils);
+
+  function dragAndDrop(tab1, tab2, copy) {
+    let rect = tab2.getBoundingClientRect();
+    let event = {
+      ctrlKey: copy,
+      altKey: copy,
+      clientX: rect.left + rect.width / 2 + 10,
+      clientY: rect.top + rect.height / 2,
+    };
+
+    EventUtils.synthesizeDrop(tab1, tab2, null, copy ? "copy" : "move", window, window, event);
+  }
+
+  dragAndDrop(newTab1, newTab2, false);
+  is(gBrowser.tabs.length, initialTabsLength + 3, "tabs are still there");
+  is(gBrowser.tabs[initialTabsLength], newTab2, "newTab2 and newTab1 are swapped");
+  is(gBrowser.tabs[initialTabsLength + 1], newTab1, "newTab1 and newTab2 are swapped");
+  is(gBrowser.tabs[initialTabsLength + 2], newTab3, "newTab3 stays same place");
+
+  dragAndDrop(newTab2, newTab1, true);
+  is(gBrowser.tabs.length, initialTabsLength + 4, "a tab is duplicated");
+  is(gBrowser.tabs[initialTabsLength], newTab2, "newTab2 stays same place");
+  is(gBrowser.tabs[initialTabsLength + 1], newTab1, "newTab1 stays same place");
+  is(gBrowser.tabs[initialTabsLength + 3], newTab3, "a new tab is inserted before newTab3");
+}