diff -r 000000000000 -r 6474c204b198 browser/devtools/styleinspector/test/browser_computedview_keybindings_01.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/browser/devtools/styleinspector/test/browser_computedview_keybindings_01.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,79 @@
+/* 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";
+
+// Test computed view key bindings
+
+let test = asyncTest(function*() {
+  yield addTab("data:text/html,default styles test");
+
+  info("Adding content to the test page");
+  content.document.body.innerHTML = '<style type="text/css"> ' +
+    '.matches {color: #F00;}</style>' +
+    '<span class="matches">Some styled text</span>' +
+    '</div>';
+
+  let {toolbox, inspector, view} = yield openComputedView();
+
+  info("Selecting the test node");
+  yield selectNode(".matches", inspector);
+
+  let propView = getFirstVisiblePropertyView(view);
+  let rulesTable = propView.matchedSelectorsContainer;
+  let matchedExpander = propView.element;
+
+  info("Focusing the property");
+  let onMatchedExpanderFocus = once(matchedExpander, "focus", true);
+  EventUtils.synthesizeMouseAtCenter(matchedExpander, {}, view.styleWindow);
+  yield onMatchedExpanderFocus;
+
+  yield checkToggleKeyBinding(view.styleWindow, "VK_SPACE", rulesTable, inspector);
+  yield checkToggleKeyBinding(view.styleWindow, "VK_RETURN", rulesTable, inspector);
+  yield checkHelpLinkKeybinding(view);
+});
+
+function getFirstVisiblePropertyView(view) {
+  let propView = null;
+  view.propertyViews.some(p => {
+    if (p.visible) {
+      propView = p;
+      return true;
+    }
+    return false;
+  });
+
+  return propView;
+}
+
+function* checkToggleKeyBinding(win, key, rulesTable, inspector) {
+  info("Pressing " + key + " key a couple of times to check that the property gets expanded/collapsed");
+
+  let onExpand = inspector.once("computed-view-property-expanded");
+  let onCollapse = inspector.once("computed-view-property-collapsed");
+
+  info("Expanding the property");
+  EventUtils.synthesizeKey(key, {}, win);
+  yield onExpand;
+  isnot(rulesTable.innerHTML, "", "The property has been expanded");
+
+  info("Collapsing the property");
+  EventUtils.synthesizeKey(key, {}, win);
+  yield onCollapse;
+  is(rulesTable.innerHTML, "", "The property has been collapsed");
+}
+
+function checkHelpLinkKeybinding(view) {
+  info("Check that MDN link is opened on \"F1\"");
+  let def = promise.defer();
+
+  let propView = getFirstVisiblePropertyView(view);
+  propView.mdnLinkClick = function(aEvent) {
+    ok(true, "Pressing F1 opened the MDN link");
+    def.resolve();
+  };
+
+  EventUtils.synthesizeKey("VK_F1", {}, view.styleWindow);
+  return def.promise;
+}