diff -r 000000000000 -r 6474c204b198 browser/devtools/debugger/test/browser_dbg_pause-warning.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/browser/devtools/debugger/test/browser_dbg_pause-warning.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,98 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+/**
+ * Tests if a warning is shown in the inspector when debugger is paused.
+ */
+
+const TAB_URL = EXAMPLE_URL + "doc_inline-script.html";
+
+let gTab, gDebuggee, gPanel, gDebugger;
+let gTarget, gToolbox;
+
+function test() {
+  initDebugger(TAB_URL).then(([aTab, aDebuggee, aPanel]) => {
+    gTab = aTab;
+    gDebuggee = aDebuggee;
+    gPanel = aPanel;
+    gDebugger = gPanel.panelWin;
+    gTarget = gPanel.target;
+    gToolbox = gPanel._toolbox;
+
+    testPause();
+  });
+}
+
+function testPause() {
+  gDebugger.gThreadClient.addOneTimeListener("paused", () => {
+    ok(gTarget.isThreadPaused,
+      "target.isThreadPaused has been updated to true.");
+
+    gToolbox.once("inspector-selected", testNotificationIsUp1);
+    gToolbox.selectTool("inspector");
+  });
+
+  EventUtils.sendMouseEvent({ type: "mousedown" },
+    gDebugger.document.getElementById("resume"),
+    gDebugger);
+}
+
+function testNotificationIsUp1() {
+  let notificationBox = gToolbox.getNotificationBox();
+  let notification = notificationBox.getNotificationWithValue("inspector-script-paused");
+
+  ok(notification,
+    "Inspector notification is present (1).");
+
+  gToolbox.once("jsdebugger-selected", testNotificationIsHidden);
+  gToolbox.selectTool("jsdebugger");
+}
+
+function testNotificationIsHidden() {
+  let notificationBox = gToolbox.getNotificationBox();
+  let notification = notificationBox.getNotificationWithValue("inspector-script-paused");
+
+  ok(!notification,
+    "Inspector notification is hidden (2).");
+
+  gToolbox.once("inspector-selected", testNotificationIsUp2);
+  gToolbox.selectTool("inspector");
+}
+
+function testNotificationIsUp2() {
+  let notificationBox = gToolbox.getNotificationBox();
+  let notification = notificationBox.getNotificationWithValue("inspector-script-paused");
+
+  ok(notification,
+    "Inspector notification is present again (3).");
+
+  testResume();
+}
+
+function testResume() {
+  gDebugger.gThreadClient.addOneTimeListener("resumed", () => {
+    ok(!gTarget.isThreadPaused,
+      "target.isThreadPaused has been updated to false.");
+
+    let notificationBox = gToolbox.getNotificationBox();
+    let notification = notificationBox.getNotificationWithValue("inspector-script-paused");
+
+    ok(!notification,
+      "Inspector notification was removed once debugger resumed.");
+
+    closeDebuggerAndFinish(gPanel);
+  });
+
+  EventUtils.sendMouseEvent({ type: "mousedown" },
+    gDebugger.document.getElementById("resume"),
+    gDebugger);
+}
+
+registerCleanupFunction(function() {
+  gTab = null;
+  gDebuggee = null;
+  gPanel = null;
+  gDebugger = null;
+  gTarget = null;
+  gToolbox = null;
+});