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diff --git a/tools/addon-sdk-1.4/packages/api-utils/lib/unit-test-finder.js b/tools/addon-sdk-1.4/packages/api-utils/lib/unit-test-finder.js
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@@ -0,0 +1,106 @@
+/* ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0/LGPL 2.1
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Jetpack.
+ *
+ * The Initial Developer of the Original Code is Mozilla.
+ * Portions created by the Initial Developer are Copyright (C) 2007
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   Atul Varma <atul@mozilla.com>
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * either the GNU General Public License Version 2 or later (the "GPL"), or
+ * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
+ * in which case the provisions of the GPL or the LGPL are applicable instead
+ * of those above. If you wish to allow use of your version of this file only
+ * under the terms of either the GPL or the LGPL, and not to allow others to
+ * use your version of this file under the terms of the MPL, indicate your
+ * decision by deleting the provisions above and replace them with the notice
+ * and other provisions required by the GPL or the LGPL. If you do not delete
+ * the provisions above, a recipient may use your version of this file under
+ * the terms of any one of the MPL, the GPL or the LGPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+"use strict";
+
+const file = require("./file");
+const packaging = require('@packaging');
+const suites = packaging.allTestModules;
+
+const NOT_TESTS = ['setup', 'teardown'];
+
+var TestFinder = exports.TestFinder = function TestFinder(options) {
+  memory.track(this);
+  this.filter = options.filter;
+  this.testInProcess = options.testInProcess === false ? false : true;
+  this.testOutOfProcess = options.testOutOfProcess === true ? true : false;
+};
+
+TestFinder.prototype = {
+  _makeTest: function _makeTest(suite, name, test) {
+    function runTest(runner) {
+      console.info("executing '" + suite + "." + name + "'");
+      test(runner);
+    }
+    return runTest;
+  },
+
+  findTests: function findTests(cb) {
+    var self = this;
+    var tests = [];
+    var filter;
+    // A filter string is {fileNameRegex}[:{testNameRegex}] - ie, a colon
+    // optionally separates a regex for the test fileName from a regex for the
+    // testName.
+    if (this.filter) {
+      var colonPos = this.filter.indexOf(':');
+      var filterFileRegex, filterNameRegex;
+      if (colonPos === -1) {
+        filterFileRegex = new RegExp(self.filter);
+      } else {
+        filterFileRegex = new RegExp(self.filter.substr(0, colonPos));
+        filterNameRegex = new RegExp(self.filter.substr(colonPos + 1));
+      }
+      // This function will first be called with just the filename; if
+      // it returns true the module will be loaded then the function
+      // called again with both the filename and the testname.
+      filter = function(filename, testname) {
+        return filterFileRegex.test(filename) &&
+               ((testname && filterNameRegex) ? filterNameRegex.test(testname)
+                                              : true);
+      };
+    } else
+      filter = function() {return true};
+
+    suites.forEach(
+      function(suite) {
+        var module = require(suite);
+        if (self.testInProcess)
+          for each (let name in Object.keys(module).sort()) {
+            if(NOT_TESTS.indexOf(name) === -1 && filter(suite, name)) {
+              tests.push({
+                           setup: module.setup,
+                           teardown: module.teardown,
+                           testFunction: self._makeTest(suite, name, module[name]),
+                           name: suite + "." + name
+                         });
+            }
+          }
+      });
+
+    cb(tests);
+  }
+};