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diff --git a/js/src/tests/ecma_2/RegExp/unicode-001.js b/js/src/tests/ecma_2/RegExp/unicode-001.js
new file mode 100644
index 000000000..ab6fbd372
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+++ b/js/src/tests/ecma_2/RegExp/unicode-001.js
@@ -0,0 +1,59 @@
+/* -*- indent-tabs-mode: nil; js-indent-level: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+
+/**
+ *  File Name:          RegExp/unicode-001.js
+ *  ECMA Section:       15.7.3.1
+ *  Description:        Based on ECMA 2 Draft 7 February 1999
+ *  Positive test cases for constructing a RegExp object
+ *  Author:             christine@netscape.com
+ *  Date:               19 February 1999
+ */
+var SECTION = "RegExp/unicode-001.js";
+var VERSION = "ECMA_2";
+var TITLE   = "new RegExp( pattern, flags )";
+
+startTest();
+
+// These examples come from 15.7.1, UnicodeEscapeSequence
+
+AddRegExpCases( /\u0041/, "/\\u0041/",   "A", "A", 1, 0, ["A"] );
+AddRegExpCases( /\u00412/, "/\\u00412/", "A2", "A2", 1, 0, ["A2"] );
+AddRegExpCases( /\u00412/, "/\\u00412/", "A2", "A2", 1, 0, ["A2"] );
+AddRegExpCases( /\u001g/, "/\\u001g/", "u001g", "u001g", 1, 0, ["u001g"] );
+
+AddRegExpCases( /A/,  "/A/",  "\u0041", "\\u0041",   1, 0, ["A"] );
+AddRegExpCases( /A/,  "/A/",  "\u00412", "\\u00412", 1, 0, ["A"] );
+AddRegExpCases( /A2/, "/A2/", "\u00412", "\\u00412", 1, 0, ["A2"]);
+AddRegExpCases( /A/,  "/A/",  "A2",      "A2",       1, 0, ["A"] );
+
+test();
+
+function AddRegExpCases(
+  regexp, str_regexp, pattern, str_pattern, length, index, matches_array ) {
+
+  AddTestCase(
+    str_regexp + " .exec(" + str_pattern +").length",
+    length,
+    regexp.exec(pattern).length );
+
+  AddTestCase(
+    str_regexp + " .exec(" + str_pattern +").index",
+    index,
+    regexp.exec(pattern).index );
+
+  AddTestCase(
+    str_regexp + " .exec(" + str_pattern +").input",
+    pattern,
+    regexp.exec(pattern).input );
+
+  for ( var matches = 0; matches < matches_array.length; matches++ ) {
+    AddTestCase(
+      str_regexp + " .exec(" + str_pattern +")[" + matches +"]",
+      matches_array[matches],
+      regexp.exec(pattern)[matches] );
+  }
+}