diff -r 000000000000 -r 6474c204b198 browser/devtools/debugger/test/browser_dbg_stack-05.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/browser/devtools/debugger/test/browser_dbg_stack-05.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,169 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+/**
+ * Test that switching between stack frames properly sets the current debugger
+ * location in the source editor.
+ */
+
+const TAB_URL = EXAMPLE_URL + "doc_script-switching-01.html";
+
+let gTab, gDebuggee, gPanel, gDebugger;
+let gEditor, gSources, gFrames, gClassicFrames;
+
+function test() {
+  initDebugger(TAB_URL).then(([aTab, aDebuggee, aPanel]) => {
+    gTab = aTab;
+    gDebuggee = aDebuggee;
+    gPanel = aPanel;
+    gDebugger = gPanel.panelWin;
+    gEditor = gDebugger.DebuggerView.editor;
+    gSources = gDebugger.DebuggerView.Sources;
+    gFrames = gDebugger.DebuggerView.StackFrames;
+    gClassicFrames = gDebugger.DebuggerView.StackFramesClassicList;
+
+    waitForSourceAndCaretAndScopes(gPanel, "-02.js", 1)
+      .then(initialChecks)
+      .then(testNewestTwoFrames)
+      .then(testOldestTwoFrames)
+      .then(testAfterResume)
+      .then(() => closeDebuggerAndFinish(gPanel))
+      .then(null, aError => {
+        ok(false, "Got an error: " + aError.message + "\n" + aError.stack);
+      });
+
+    gDebuggee.firstCall();
+  });
+}
+
+function initialChecks() {
+  is(gDebugger.gThreadClient.state, "paused",
+    "Should only be getting stack frames while paused.");
+  is(gFrames.itemCount, 4,
+    "Should have four frames.");
+  is(gClassicFrames.itemCount, 4,
+    "Should also have four frames in the mirrored view.");
+}
+
+function testNewestTwoFrames() {
+  let deferred = promise.defer();
+
+  is(gFrames.selectedIndex, 3,
+    "Newest frame should be selected by default.");
+  is(gClassicFrames.selectedIndex, 0,
+    "Newest frame should be selected in the mirrored view as well.");
+  is(gSources.selectedIndex, 1,
+    "The second source is selected in the widget.");
+  ok(isCaretPos(gPanel, 1),
+    "Editor caret location is correct (1).");
+
+  // The editor's debug location takes a tick to update.
+  executeSoon(() => {
+    is(gEditor.getDebugLocation(), 0,
+      "Editor debug location is correct.");
+
+    EventUtils.sendMouseEvent({ type: "mousedown" },
+      gFrames.getItemAtIndex(2).target,
+      gDebugger);
+
+    is(gFrames.selectedIndex, 2,
+      "Third frame should be selected after click.");
+    is(gClassicFrames.selectedIndex, 1,
+      "Third frame should be selected in the mirrored view as well.");
+    is(gSources.selectedIndex, 1,
+      "The second source is still selected in the widget.");
+    ok(isCaretPos(gPanel, 6),
+      "Editor caret location is correct (2).");
+
+    // The editor's debug location takes a tick to update.
+    executeSoon(() => {
+      is(gEditor.getDebugLocation(), 5,
+        "Editor debug location is correct.");
+
+      deferred.resolve();
+    });
+  });
+
+  return deferred.promise;
+}
+
+function testOldestTwoFrames() {
+  let deferred = promise.defer();
+
+  waitForSourceAndCaret(gPanel, "-01.js", 1).then(waitForTick).then(() => {
+    is(gFrames.selectedIndex, 1,
+      "Second frame should be selected after click.");
+    is(gClassicFrames.selectedIndex, 2,
+      "Second frame should be selected in the mirrored view as well.");
+    is(gSources.selectedIndex, 0,
+      "The first source is now selected in the widget.");
+    ok(isCaretPos(gPanel, 1),
+      "Editor caret location is correct (3).");
+
+    // The editor's debug location takes a tick to update.
+    executeSoon(() => {
+      is(gEditor.getDebugLocation(), 0,
+        "Editor debug location is correct.");
+
+      EventUtils.sendMouseEvent({ type: "mousedown" },
+        gFrames.getItemAtIndex(0).target,
+        gDebugger);
+
+      is(gFrames.selectedIndex, 0,
+        "Oldest frame should be selected after click.");
+      is(gClassicFrames.selectedIndex, 3,
+        "Oldest frame should be selected in the mirrored view as well.");
+      is(gSources.selectedIndex, 0,
+        "The first source is still selected in the widget.");
+      ok(isCaretPos(gPanel, 5),
+        "Editor caret location is correct (4).");
+
+      // The editor's debug location takes a tick to update.
+      executeSoon(() => {
+        is(gEditor.getDebugLocation(), 4,
+          "Editor debug location is correct.");
+
+        deferred.resolve();
+      });
+    });
+  });
+
+  EventUtils.sendMouseEvent({ type: "mousedown" },
+    gDebugger.document.querySelector("#stackframe-2"),
+    gDebugger);
+
+  return deferred.promise;
+}
+
+function testAfterResume() {
+  let deferred = promise.defer();
+
+  gDebugger.once(gDebugger.EVENTS.AFTER_FRAMES_CLEARED, () => {
+    is(gFrames.itemCount, 0,
+      "Should have no frames after resume.");
+    is(gClassicFrames.itemCount, 0,
+      "Should have no frames in the mirrored view as well.");
+    ok(isCaretPos(gPanel, 5),
+      "Editor caret location is correct after resume.");
+    is(gEditor.getDebugLocation(), null,
+      "Editor debug location is correct after resume.");
+
+    deferred.resolve();
+  }, true);
+
+  gDebugger.gThreadClient.resume();
+
+  return deferred.promise;
+}
+
+registerCleanupFunction(function() {
+  gTab = null;
+  gDebuggee = null;
+  gPanel = null;
+  gDebugger = null;
+  gEditor = null;
+  gSources = null;
+  gFrames = null;
+  gClassicFrames = null;
+});
+