Support up to 6 digits after the decimal point in Date.fromString.

tests/corelib/date_time4_test.dart

+// Copyright (c) 2012, 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.
+
+// Test fromString with 6 digits after the decimal point.
+
+main() {
+  // We only support milliseconds. If the user supplies more data (the "51"
+  // here), we round.
+  // If (eventually) we support more than just milliseconds this test could
+  // fail. Please update the test in this case.
+  Date dt1 = new Date.fromString("1999-01-02 23:59:59.999519");
+  Expect.equals(1999, dt1.year);
+  Expect.equals(1, dt1.month);
+  Expect.equals(3, dt1.day);
+  Expect.equals(0, dt1.hours);
+  Expect.equals(0, dt1.minutes);
+  Expect.equals(0, dt1.seconds);
+  Expect.equals(0, dt1.milliseconds);
+  Expect.equals(false, dt1.isUtc());
+  dt1 = new Date.fromString("1999-01-02 23:58:59.999519Z");
+  Expect.equals(1999, dt1.year);
+  Expect.equals(1, dt1.month);
+  Expect.equals(2, dt1.day);
+  Expect.equals(23, dt1.hours);
+  Expect.equals(59, dt1.minutes);
+  Expect.equals(0, dt1.seconds);
+  Expect.equals(0, dt1.milliseconds);
+  Expect.equals(true, dt1.isUtc());
+  dt1 = new Date.fromString("0009-09-09 09:09:09.009411Z");
+  Expect.equals(9, dt1.year);
+  Expect.equals(9, dt1.month);
+  Expect.equals(9, dt1.day);
+  Expect.equals(9, dt1.hours);
+  Expect.equals(9, dt1.minutes);
+  Expect.equals(9, dt1.seconds);
+  Expect.equals(9, dt1.milliseconds);
+  Expect.equals(true, dt1.isUtc());
+  String svnDate = "2012-03-30T04:28:13.752341Z";
+  dt1 = new Date.fromString(svnDate);
+  Expect.equals(2012, dt1.year);
+  Expect.equals(3, dt1.month);
+  Expect.equals(30, dt1.day);
+  Expect.equals(4, dt1.hours);
+  Expect.equals(28, dt1.minutes);
+  Expect.equals(13, dt1.seconds);
+  Expect.equals(752, dt1.milliseconds);
+  Expect.equals(true, dt1.isUtc());
+  
+}