diff -r 000000000000 -r 6474c204b198 browser/devtools/debugger/test/browser_dbg_search-autofill-identifier.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/browser/devtools/debugger/test/browser_dbg_search-autofill-identifier.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,135 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+/**
+ * Tests that Debugger Search uses the identifier under cursor if nothing is
+ * selected or manually passed and searching using certain operators.
+ */
+"use strict";
+
+function test() {
+  const TAB_URL = EXAMPLE_URL + "doc_function-search.html";
+
+  initDebugger(TAB_URL).then(([aTab, aDebuggee, aPanel]) => {
+    let Source = 'code_function-search-01.js';
+    let Debugger = aPanel.panelWin;
+    let Editor = Debugger.DebuggerView.editor;
+    let Filtering = Debugger.DebuggerView.Filtering;
+
+    function doSearch(aOperator) {
+      Editor.dropSelection();
+      Filtering._doSearch(aOperator);
+    }
+
+    waitForSourceShown(aPanel, Source).then(() => {
+      info("Testing with cursor at the beginning of the file...");
+
+      doSearch();
+      is(Filtering._searchbox.value, "",
+        "The searchbox value should not be auto-filled when searching for files.");
+      is(Filtering._searchbox.selectionStart, Filtering._searchbox.selectionEnd,
+        "The searchbox contents should not be selected");
+      is(Editor.getSelection(), "",
+        "The selection in the editor should be empty.");
+
+      doSearch("!");
+      is(Filtering._searchbox.value, "!",
+        "The searchbox value should not be auto-filled when searching across all files.");
+      is(Filtering._searchbox.selectionStart, Filtering._searchbox.selectionEnd,
+        "The searchbox contents should not be selected");
+      is(Editor.getSelection(), "",
+        "The selection in the editor should be empty.");
+
+      doSearch("@");
+      is(Filtering._searchbox.value, "@",
+        "The searchbox value should not be auto-filled when searching for functions.");
+      is(Filtering._searchbox.selectionStart, Filtering._searchbox.selectionEnd,
+        "The searchbox contents should not be selected");
+      is(Editor.getSelection(), "",
+        "The selection in the editor should be empty.");
+
+      doSearch("#");
+      is(Filtering._searchbox.value, "#",
+        "The searchbox value should not be auto-filled when searching inside a file.");
+      is(Filtering._searchbox.selectionStart, Filtering._searchbox.selectionEnd,
+        "The searchbox contents should not be selected");
+      is(Editor.getSelection(), "",
+        "The selection in the editor should be empty.");
+
+      doSearch(":");
+      is(Filtering._searchbox.value, ":",
+        "The searchbox value should not be auto-filled when searching for a line.");
+      is(Filtering._searchbox.selectionStart, Filtering._searchbox.selectionEnd,
+        "The searchbox contents should not be selected");
+      is(Editor.getSelection(), "",
+        "The selection in the editor should be empty.");
+
+      doSearch("*");
+      is(Filtering._searchbox.value, "*",
+        "The searchbox value should not be auto-filled when searching for variables.");
+      is(Filtering._searchbox.selectionStart, Filtering._searchbox.selectionEnd,
+        "The searchbox contents should not be selected");
+      is(Editor.getSelection(), "",
+        "The selection in the editor should be empty.");
+
+      Editor.setCursor({ line: 7, ch: 0});
+      info("Testing with cursor at line 8 and char 1...");
+
+      doSearch();
+      is(Filtering._searchbox.value, "",
+        "The searchbox value should not be auto-filled when searching for files.");
+      is(Filtering._searchbox.selectionStart, Filtering._searchbox.selectionEnd,
+        "The searchbox contents should not be selected");
+      is(Editor.getSelection(), "",
+        "The selection in the editor should be empty.");
+
+      doSearch("!");
+      is(Filtering._searchbox.value, "!test",
+        "The searchbox value was incorrect when searching across all files.");
+      is(Filtering._searchbox.selectionStart, 1,
+        "The searchbox operator should not be selected");
+      is(Filtering._searchbox.selectionEnd, 5,
+        "The searchbox contents should be selected");
+      is(Editor.getSelection(), "",
+        "The selection in the editor should be empty.");
+
+      doSearch("@");
+      is(Filtering._searchbox.value, "@test",
+        "The searchbox value was incorrect when searching for functions.");
+      is(Filtering._searchbox.selectionStart, 1,
+        "The searchbox operator should not be selected");
+      is(Filtering._searchbox.selectionEnd, 5,
+        "The searchbox contents should be selected");
+      is(Editor.getSelection(), "",
+        "The selection in the editor should be empty.");
+
+      doSearch("#");
+      is(Filtering._searchbox.value, "#test",
+        "The searchbox value should be auto-filled when searching inside a file.");
+      is(Filtering._searchbox.selectionStart, 1,
+        "The searchbox operator should not be selected");
+      is(Filtering._searchbox.selectionEnd, 5,
+        "The searchbox contents should be selected");
+      is(Editor.getSelection(), "test",
+        "The selection in the editor should be 'test'.");
+
+      doSearch(":");
+      is(Filtering._searchbox.value, ":",
+        "The searchbox value should not be auto-filled when searching for a line.");
+      is(Filtering._searchbox.selectionStart, Filtering._searchbox.selectionEnd,
+        "The searchbox contents should not be selected");
+      is(Editor.getSelection(), "",
+        "The selection in the editor should be empty.");
+
+      doSearch("*");
+      is(Filtering._searchbox.value, "*",
+        "The searchbox value should not be auto-filled when searching for variables.");
+      is(Filtering._searchbox.selectionStart, Filtering._searchbox.selectionEnd,
+        "The searchbox contents should not be selected");
+      is(Editor.getSelection(), "",
+        "The selection in the editor should be empty.");
+
+      closeDebuggerAndFinish(aPanel);
+    });
+  });
+};