1 files changed, 48 insertions, 0 deletions
diff --git a/devtools/client/inspector/test/browser_inspector_keyboard-shortcuts.js b/devtools/client/inspector/test/browser_inspector_keyboard-shortcuts.js
new file mode 100644
index 000000000..f03a33fd1
--- /dev/null
+++ b/devtools/client/inspector/test/browser_inspector_keyboard-shortcuts.js
@@ -0,0 +1,48 @@
+/* vim: set ft=javascript ts=2 et sw=2 tw=80: */
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+"use strict";
+
+// Tests that the keybindings for highlighting different elements work as
+// intended.
+
+const TEST_URI = "data:text/html;charset=utf-8," +
+  "<html><head><title>Test for the highlighter keybindings</title></head>" +
+  "<body><p><strong>Greetings, earthlings!</strong>" +
+  " I come in peace.</p></body></html>";
+
+const TEST_DATA = [
+  { key: "VK_LEFT", selectedNode: "p" },
+  { key: "VK_LEFT", selectedNode: "body" },
+  { key: "VK_LEFT", selectedNode: "html" },
+  { key: "VK_RIGHT", selectedNode: "body" },
+  { key: "VK_RIGHT", selectedNode: "p" },
+  { key: "VK_RIGHT", selectedNode: "strong" },
+];
+
+add_task(function* () {
+  let { inspector } = yield openInspectorForURL(TEST_URI);
+
+  info("Selecting the deepest element to start with");
+  yield selectNode("strong", inspector);
+
+  let nodeFront = yield getNodeFront("strong", inspector);
+  is(inspector.selection.nodeFront, nodeFront,
+     "<strong> should be selected initially");
+
+  info("Focusing the currently active breadcrumb button");
+  let bc = inspector.breadcrumbs;
+  bc.nodeHierarchy[bc.currentIndex].button.focus();
+
+  for (let { key, selectedNode } of TEST_DATA) {
+    info("Pressing " + key + " to select " + selectedNode);
+
+    let updated = inspector.once("inspector-updated");
+    EventUtils.synthesizeKey(key, {});
+    yield updated;
+
+    let selectedNodeFront = yield getNodeFront(selectedNode, inspector);
+    is(inspector.selection.nodeFront, selectedNodeFront,
+      selectedNode + " is selected.");
+  }
+});