Add corelib tests

test/codegen/corelib/list_sort_test.dart

Index: test/codegen/corelib/list_sort_test.dart
diff --git a/test/codegen/corelib/list_sort_test.dart b/test/codegen/corelib/list_sort_test.dart
new file mode 100644
index 0000000000000000000000000000000000000000..335f201efc6dd5519c8daad80f2263e1f0821f64
--- /dev/null
+++ b/test/codegen/corelib/list_sort_test.dart
@@ -0,0 +1,23 @@
+// 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.
+
+library list_sort_test;
+import 'sort_helper.dart';
+
+class ListSortTest {
+  static void testMain() {
+    var compare = Comparable.compare;
+    var sort = (list) => list.sort(compare);
+    new SortHelper(sort, compare).run();
+
+    new SortHelper((list) => list.sort(), compare).run();
+
+    compare = (a, b) => -a.compareTo(b);
+    new SortHelper(sort, compare).run();
+  }
+}
+
+main() {
+  ListSortTest.testMain();
+}