diff -r 000000000000 -r 6474c204b198 browser/devtools/markupview/test/browser_markupview_highlight_hover_02.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/browser/devtools/markupview/test/browser_markupview_highlight_hover_02.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,28 @@
+/* vim: set 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 that when after an element is selected and highlighted on hover, if the
+// mouse leaves the markup-view and comes back again on the same element, that
+// the highlighter is shown again on the node
+
+let test = asyncTest(function*() {
+  let {inspector} = yield addTab("data:text/html,<p>Select me!</p>").then(openInspector);
+
+  info("hover over the <p> line in the markup-view so that it's the currently hovered node");
+  yield hoverContainer("p", inspector);
+
+  info("select the <p> markup-container line by clicking");
+  yield clickContainer("p", inspector);
+  ok(isHighlighterVisible(), "the highlighter is shown");
+
+  info("mouse-leave the markup-view");
+  yield mouseLeaveMarkupView(inspector);
+  ok(!isHighlighterVisible(), "the highlighter is hidden after mouseleave");
+
+  info("hover over the <p> line again, which is still selected");
+  yield hoverContainer("p", inspector);
+  ok(isHighlighterVisible(), "the highlighter is visible again");
+});