diff -r 000000000000 -r 6474c204b198 browser/devtools/styleinspector/test/browser_ruleview_media-queries.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/browser/devtools/styleinspector/test/browser_ruleview_media-queries.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,31 @@
+/* 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 we correctly display appropriate media query titles in the
+// rule view.
+
+const TEST_URI = TEST_URL_ROOT + "doc_media_queries.html";
+
+let test = asyncTest(function*() {
+  yield addTab(TEST_URI);
+  let {inspector, view} = yield openRuleView();
+
+  yield selectNode("div", inspector);
+
+  let elementStyle = view._elementStyle;
+
+  let _strings = Services.strings
+    .createBundle("chrome://global/locale/devtools/styleinspector.properties");
+
+  let inline = _strings.GetStringFromName("rule.sourceInline");
+
+  is(elementStyle.rules.length, 3, "Should have 3 rules.");
+  is(elementStyle.rules[0].title, inline, "check rule 0 title");
+  is(elementStyle.rules[1].title, inline +
+    ":15 @media screen and (min-width: 1px)", "check rule 1 title");
+  is(elementStyle.rules[2].title, inline + ":8", "check rule 2 title");
+});
+