1 files changed, 64 insertions, 0 deletions
diff --git a/devtools/client/inspector/test/browser_inspector_highlighter-keybinding_02.js b/devtools/client/inspector/test/browser_inspector_highlighter-keybinding_02.js
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+++ b/devtools/client/inspector/test/browser_inspector_highlighter-keybinding_02.js
@@ -0,0 +1,64 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+// Test that the keybindings for Picker work alright
+
+const TEST_URL = URL_ROOT + "doc_inspector_highlighter_dom.html";
+
+add_task(async function () {
+  const { inspector, toolbox, highlighterTestFront } =
+    await openInspectorForURL(TEST_URL);
+  const { waitForHighlighterTypeShown } = getHighlighterTestHelpers(inspector);
+
+  await startPicker(toolbox);
+
+  // Previously chosen child memory
+  info("Testing whether previously chosen child is remembered");
+
+  info("Selecting the ahoy paragraph DIV");
+  await hoverElement(inspector, "#ahoy");
+
+  await doKeyHover("VK_LEFT");
+  ok(
+    await highlighterTestFront.assertHighlightedNode("#simple-div2"),
+    "The highlighter shows #simple-div2. OK."
+  );
+
+  await doKeyHover("VK_RIGHT");
+  ok(
+    await highlighterTestFront.assertHighlightedNode("#ahoy"),
+    "The highlighter shows #ahoy. OK."
+  );
+
+  info("Going back up to the complex-div DIV");
+  await doKeyHover("VK_LEFT");
+  await doKeyHover("VK_LEFT");
+  ok(
+    await highlighterTestFront.assertHighlightedNode("#complex-div"),
+    "The highlighter shows #complex-div. OK."
+  );
+
+  await doKeyHover("VK_RIGHT");
+  ok(
+    await highlighterTestFront.assertHighlightedNode("#simple-div2"),
+    "The highlighter shows #simple-div2. OK."
+  );
+
+  info("Previously chosen child is remembered. Passed.");
+
+  info("Stopping the picker");
+  await toolbox.nodePicker.stop({ canceled: true });
+
+  function doKeyHover(key) {
+    info("Key pressed. Waiting for element to be highlighted/hovered");
+    const onPickerHovered = toolbox.nodePicker.once("picker-node-hovered");
+    const onHighlighterShown = waitForHighlighterTypeShown(
+      inspector.highlighters.TYPES.BOXMODEL
+    );
+    BrowserTestUtils.synthesizeKey(key, {}, gBrowser.selectedBrowser);
+    return Promise.all([onPickerHovered, onHighlighterShown]);
+  }
+});