Add corelib tests

test/codegen/corelib/strings_test.dart

Index: test/codegen/corelib/strings_test.dart
diff --git a/test/codegen/corelib/strings_test.dart b/test/codegen/corelib/strings_test.dart
new file mode 100644
index 0000000000000000000000000000000000000000..11490d2623d9dd4954474ee5b5243b0ce9f0cb4c
--- /dev/null
+++ b/test/codegen/corelib/strings_test.dart
@@ -0,0 +1,34 @@
+// Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import "package:expect/expect.dart";
+
+// Dart test program for testing class 'Strings'.
+
+class StringsTest {
+
+  StringsTest() {}
+
+  toString() {
+    return "Strings Tester";
+  }
+  static testCreation() {
+    String s = "Hello";
+    List<int> l = new List(s.length);
+    for (int i = 0; i < l.length; i++) {
+      l[i] = s.codeUnitAt(i);
+    }
+    String s2 = new String.fromCharCodes(l);
+    Expect.equals(s, s2);
+  }
+
+  static void testMain() {
+    testCreation();
+  }
+}
+
+
+main() {
+  StringsTest.testMain();
+}