diff -r 000000000000 -r 6474c204b198 browser/devtools/debugger/test/browser_dbg_search-sources-03.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/browser/devtools/debugger/test/browser_dbg_search-sources-03.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,100 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+/**
+ * Tests that while searching for files, the sources list remains unchanged.
+ */
+
+const TAB_URL = EXAMPLE_URL + "doc_editor-mode.html";
+
+let gTab, gDebuggee, gPanel, gDebugger;
+let gSources, gSearchBox;
+
+function test() {
+  initDebugger(TAB_URL).then(([aTab, aDebuggee, aPanel]) => {
+    gTab = aTab;
+    gDebuggee = aDebuggee;
+    gPanel = aPanel;
+    gDebugger = gPanel.panelWin;
+    gSources = gDebugger.DebuggerView.Sources;
+    gSearchBox = gDebugger.DebuggerView.Filtering._searchbox;
+
+    waitForSourceShown(gPanel, "-01.js")
+      .then(superGenericSearch)
+      .then(verifySourcesPane)
+      .then(kindaInterpretableSearch)
+      .then(verifySourcesPane)
+      .then(incrediblySpecificSearch)
+      .then(verifySourcesPane)
+      .then(returnAndHide)
+      .then(verifySourcesPane)
+      .then(() => closeDebuggerAndFinish(gPanel))
+      .then(null, aError => {
+        ok(false, "Got an error: " + aError.message + "\n" + aError.stack);
+      });
+  });
+}
+
+function waitForMatchFoundAndResultsShown() {
+  return promise.all([
+    once(gDebugger, "popupshown"),
+    waitForDebuggerEvents(gPanel, gDebugger.EVENTS.FILE_SEARCH_MATCH_FOUND)
+  ]).then(() => promise.all([
+    ensureSourceIs(gPanel, "-01.js"),
+    ensureCaretAt(gPanel, 1)
+  ]));
+}
+
+function waitForResultsHidden() {
+  return once(gDebugger, "popuphidden").then(() => promise.all([
+    ensureSourceIs(gPanel, "-01.js"),
+    ensureCaretAt(gPanel, 1)
+  ]));
+}
+
+function superGenericSearch() {
+  let finished = waitForMatchFoundAndResultsShown();
+  setText(gSearchBox, ".");
+  return finished;
+}
+
+function kindaInterpretableSearch() {
+  let finished = waitForMatchFoundAndResultsShown();
+  typeText(gSearchBox, "-0");
+  return finished;
+}
+
+function incrediblySpecificSearch() {
+  let finished = waitForMatchFoundAndResultsShown();
+  typeText(gSearchBox, "1.js");
+  return finished;
+}
+
+function returnAndHide() {
+  let finished = waitForResultsHidden();
+  EventUtils.sendKey("RETURN", gDebugger);
+  return finished;
+}
+
+function verifySourcesPane() {
+  is(gSources.itemCount, 3,
+    "There should be 3 items present in the sources container.");
+  is(gSources.visibleItems.length, 3,
+    "There should be no hidden items in the sources container.");
+
+  ok(gSources.getItemForAttachment(e => e.label == "code_script-switching-01.js"),
+    "The first source's label should be correct.");
+  ok(gSources.getItemForAttachment(e => e.label == "code_test-editor-mode"),
+    "The second source's label should be correct.");
+  ok(gSources.getItemForAttachment(e => e.label == "doc_editor-mode.html"),
+    "The third source's label should be correct.");
+}
+
+registerCleanupFunction(function() {
+  gTab = null;
+  gDebuggee = null;
+  gPanel = null;
+  gDebugger = null;
+  gSources = null;
+  gSearchBox = null;
+});