diff -r 000000000000 -r 6474c204b198 browser/devtools/debugger/test/browser_dbg_break-on-dom-01.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/browser/devtools/debugger/test/browser_dbg_break-on-dom-01.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,52 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+/**
+ * Tests that event listeners aren't fetched when the events tab isn't selected.
+ */
+
+const TAB_URL = EXAMPLE_URL + "doc_event-listeners-02.html";
+
+function test() {
+  initDebugger(TAB_URL).then(([aTab, aDebuggee, aPanel]) => {
+    let gDebugger = aPanel.panelWin;
+    let gView = gDebugger.DebuggerView;
+    let gEvents = gView.EventListeners;
+
+    gDebugger.on(gDebugger.EVENTS.EVENT_LISTENERS_FETCHED, () => {
+      ok(false, "Shouldn't have fetched any event listeners.");
+    });
+    gDebugger.on(gDebugger.EVENTS.EVENT_BREAKPOINTS_UPDATED, () => {
+      ok(false, "Shouldn't have updated any event breakpoints.");
+    });
+
+    gView.toggleInstrumentsPane({ visible: true, animated: false });
+
+    is(gView.instrumentsPaneHidden, false,
+      "The instruments pane should be visible now.");
+    is(gView.instrumentsPaneTab, "variables-tab",
+      "The variables tab should be selected by default.");
+
+    Task.spawn(function() {
+      yield waitForSourceShown(aPanel, ".html");
+      is(gEvents.itemCount, 0, "There should be no events before reloading.");
+
+      let reloaded = waitForSourcesAfterReload();
+      gDebugger.DebuggerController._target.activeTab.reload();
+
+      is(gEvents.itemCount, 0, "There should be no events while reloading.");
+      yield reloaded;
+      is(gEvents.itemCount, 0, "There should be no events after reloading.");
+
+      yield closeDebuggerAndFinish(aPanel);
+    });
+
+    function waitForSourcesAfterReload() {
+      return promise.all([
+        waitForDebuggerEvents(aPanel, gDebugger.EVENTS.NEW_SOURCE),
+        waitForDebuggerEvents(aPanel, gDebugger.EVENTS.SOURCES_ADDED),
+        waitForDebuggerEvents(aPanel, gDebugger.EVENTS.SOURCE_SHOWN)
+      ]);
+    }
+  });
+}