diff -r 000000000000 -r 6474c204b198 browser/devtools/styleinspector/test/browser_computedview_original-source-link.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/browser/devtools/styleinspector/test/browser_computedview_original-source-link.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,68 @@
+/* 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 that the computed view shows the original source link when source maps
+// are enabled
+
+const TESTCASE_URI = TEST_URL_ROOT_SSL + "doc_sourcemaps.html";
+const PREF = "devtools.styleeditor.source-maps-enabled";
+const SCSS_LOC = "doc_sourcemaps.scss:4";
+const CSS_LOC = "doc_sourcemaps.css:1";
+
+let test = asyncTest(function*() {
+  info("Turning the pref " + PREF + " on");
+  Services.prefs.setBoolPref(PREF, true);
+
+  yield addTab(TESTCASE_URI);
+  let {toolbox, inspector, view} = yield openComputedView();
+
+  info("Select the test node");
+  yield selectNode("div", inspector);
+
+  info("Expanding the first property");
+  yield expandComputedViewPropertyByIndex(view, inspector, 0);
+
+  info("Verifying the link text");
+  yield verifyLinkText(view, SCSS_LOC);
+
+  info("Toggling the pref");
+  Services.prefs.setBoolPref(PREF, false);
+
+  info("Verifying that the link text has changed after the pref change");
+  yield verifyLinkText(view, CSS_LOC);
+
+  info("Toggling the pref again");
+  Services.prefs.setBoolPref(PREF, true);
+
+  info("Testing that clicking on the link works");
+  yield testClickingLink(toolbox, view);
+
+  info("Turning the pref " + PREF + " off");
+  Services.prefs.clearUserPref(PREF);
+});
+
+function* testClickingLink(toolbox, view) {
+  let onEditor = waitForStyleEditor(toolbox, "doc_sourcemaps.scss");
+
+  info("Clicking the computedview stylesheet link");
+  let link = getComputedViewLinkByIndex(view, 0);
+  link.scrollIntoView();
+  link.click();
+
+  let editor = yield onEditor;
+
+  let {line, col} = editor.sourceEditor.getCursor();
+  is(line, 3, "cursor is at correct line number in original source");
+}
+
+function verifyLinkText(view, text) {
+  let link = getComputedViewLinkByIndex(view, 0);
+
+  return waitForSuccess(
+    () => link.textContent == text,
+    "link text changed to display correct location: " + text
+  );
+}