diff -r 000000000000 -r 6474c204b198 browser/devtools/debugger/test/browser_dbg_breadcrumbs-access.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/browser/devtools/debugger/test/browser_dbg_breadcrumbs-access.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,95 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+/**
+ * Tests if the stackframe breadcrumbs are keyboard accessible.
+ */
+
+const TAB_URL = EXAMPLE_URL + "doc_script-switching-01.html";
+
+function test() {
+  let gTab, gDebuggee, gPanel, gDebugger;
+  let gSources, gFrames;
+
+  initDebugger(TAB_URL).then(([aTab, aDebuggee, aPanel]) => {
+    gTab = aTab;
+    gDebuggee = aDebuggee;
+    gPanel = aPanel;
+    gDebugger = gPanel.panelWin;
+    gSources = gDebugger.DebuggerView.Sources;
+    gFrames = gDebugger.DebuggerView.StackFrames;
+
+    waitForSourceAndCaretAndScopes(gPanel, "-02.js", 1)
+      .then(checkNavigationWhileNotFocused)
+      .then(focusCurrentStackFrame)
+      .then(checkNavigationWhileFocused)
+      .then(() => resumeDebuggerThenCloseAndFinish(gPanel))
+      .then(null, aError => {
+        ok(false, "Got an error: " + aError.message + "\n" + aError.stack);
+      });
+
+    gDebuggee.firstCall();
+  });
+
+  function checkNavigationWhileNotFocused() {
+    checkState({ frame: 3, source: 1, line: 1 });
+
+    EventUtils.sendKey("DOWN", gDebugger);
+    checkState({ frame: 3, source: 1, line: 2 });
+
+    EventUtils.sendKey("UP", gDebugger);
+    checkState({ frame: 3, source: 1, line: 1 });
+  }
+
+  function focusCurrentStackFrame() {
+    EventUtils.sendMouseEvent({ type: "mousedown" },
+      gFrames.selectedItem.target,
+      gDebugger);
+  }
+
+  function checkNavigationWhileFocused() {
+    return Task.spawn(function() {
+      yield promise.all([
+        waitForDebuggerEvents(gPanel, gDebugger.EVENTS.FETCHED_SCOPES),
+        EventUtils.sendKey("UP", gDebugger)
+      ]);
+      checkState({ frame: 2, source: 1, line: 1 });
+
+      yield promise.all([
+        waitForDebuggerEvents(gPanel, gDebugger.EVENTS.FETCHED_SCOPES),
+        waitForSourceAndCaret(gPanel, "-01.js", 1),
+        EventUtils.sendKey("UP", gDebugger)
+      ]);
+      checkState({ frame: 1, source: 0, line: 1 });
+
+      yield promise.all([
+        waitForDebuggerEvents(gPanel, gDebugger.EVENTS.FETCHED_SCOPES),
+        EventUtils.sendKey("UP", gDebugger)
+      ]);
+      checkState({ frame: 0, source: 0, line: 5 });
+
+      yield promise.all([
+        waitForDebuggerEvents(gPanel, gDebugger.EVENTS.FETCHED_SCOPES),
+        waitForSourceAndCaret(gPanel, "-02.js", 1),
+        EventUtils.sendKey("END", gDebugger)
+      ]);
+      checkState({ frame: 3, source: 1, line: 1 });
+
+      yield promise.all([
+        waitForDebuggerEvents(gPanel, gDebugger.EVENTS.FETCHED_SCOPES),
+        waitForSourceAndCaret(gPanel, "-01.js", 1),
+        EventUtils.sendKey("HOME", gDebugger)
+      ]);
+      checkState({ frame: 0, source: 0, line: 5 });
+    });
+  }
+
+  function checkState({ frame, source, line }) {
+    is(gFrames.selectedIndex, frame,
+      "The currently selected stackframe is incorrect.");
+    is(gSources.selectedIndex, source,
+      "The currently selected source is incorrect.");
+    ok(isCaretPos(gPanel, line),
+      "The source editor caret position was incorrect.");
+  }
+}