Fixed test in checked mode.

Fixed test in checked mode.
Committed: https://code.google.com/p/dart/source/detail?r=11846

[Tom Ball, 2012-09-04 21:54:43]

Fixed cast in new test.

[hausner, 2012-09-04 22:01:49]

I think the test would fail in checked mode.

http://codereview.chromium.org/10918061/diff/1/runtime/tests/vm/dart/assert_w...
File runtime/tests/vm/dart/assert_with_type_test_or_cast_test.dart (right):

http://codereview.chromium.org/10918061/diff/1/runtime/tests/vm/dart/assert_w...
runtime/tests/vm/dart/assert_with_type_test_or_cast_test.dart:23: assert((names
as List<long>).length == 0);
long is not a valid Dart type. This will fail in checked mode for sure.

Try running with --enable_type_checks and see what happens.

[hausner, 2012-09-04 22:10:12]

Ship it!