Add corelib tests

test/codegen/corelib/date_time_parse_test.dart

Index: test/codegen/corelib/date_time_parse_test.dart
diff --git a/test/codegen/corelib/date_time_parse_test.dart b/test/codegen/corelib/date_time_parse_test.dart
new file mode 100644
index 0000000000000000000000000000000000000000..85f183a54f28669728c04390e39b06cbfcc58619
--- /dev/null
+++ b/test/codegen/corelib/date_time_parse_test.dart
@@ -0,0 +1,54 @@
+// Copyright (c) 2013, 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";
+
+check(DateTime expected, String str) {
+  DateTime actual = DateTime.parse(str);
+  Expect.equals(expected, actual);  // Only checks if they are at the same time.
+  Expect.equals(expected.isUtc, actual.isUtc);
+}
+
+bool get supportsMicroseconds =>
+    new DateTime.fromMicrosecondsSinceEpoch(1).microsecondsSinceEpoch == 1;
+
+main() {
+  check(new DateTime(2012, 02, 27, 13, 27), "2012-02-27 13:27:00");
+  if (supportsMicroseconds) {
+    check(new DateTime.utc(2012, 02, 27, 13, 27, 0, 123, 456),
+          "2012-02-27 13:27:00.123456z");
+  } else {
+    check(new DateTime.utc(2012, 02, 27, 13, 27, 0, 123, 456),
+          "2012-02-27 13:27:00.123z");
+  }
+  check(new DateTime(2012, 02, 27, 13, 27), "20120227 13:27:00");
+  check(new DateTime(2012, 02, 27, 13, 27), "20120227T132700");
+  check(new DateTime(2012, 02, 27), "20120227");
+  check(new DateTime(2012, 02, 27), "+20120227");
+  check(new DateTime.utc(2012, 02, 27, 14), "2012-02-27T14Z");
+  check(new DateTime.utc(-12345, 1, 1), "-123450101 00:00:00 Z");
+  check(new DateTime.utc(2012, 02, 27, 14), "2012-02-27T14+00");
+  check(new DateTime.utc(2012, 02, 27, 14), "2012-02-27T14+0000");
+  check(new DateTime.utc(2012, 02, 27, 14), "2012-02-27T14+00:00");
+  check(new DateTime.utc(2012, 02, 27, 14), "2012-02-27T14 +00:00");
+
+  check(new DateTime.utc(2015, 02, 14, 13, 0, 0, 0),
+        "2015-02-15T00:00+11");
+  check(new DateTime.utc(2015, 02, 14, 13, 0, 0, 0),
+        "2015-02-15T00:00:00+11");
+  check(new DateTime.utc(2015, 02, 14, 13, 0, 0, 0),
+        "2015-02-15T00:00:00+11:00");
+
+  if (supportsMicroseconds) {
+    check(new DateTime.utc(2015, 02, 15, 0, 0, 0, 500, 500),
+        "2015-02-15T00:00:00.500500Z");
+    check(new DateTime.utc(2015, 02, 15, 0, 0, 0, 511, 500),
+        "2015-02-15T00:00:00.511500Z");
+  } else {
+    check(new DateTime.utc(2015, 02, 15, 0, 0, 0, 501),
+        "2015-02-15T00:00:00.501Z");
+    check(new DateTime.utc(2015, 02, 15, 0, 0, 0, 512),
+        "2015-02-15T00:00:00.512Z");
+  }
+}