becf615d11
Add a test where a class that has no generative constructors declares an instance variable which is final and has no initializing expression. With https://github.com/dart-lang/language/pull/1130 this is an error, and that error is expected by the test. Also test that it is not an error to have an uninitialized final variable which is abstract or external. Change-Id: I6c4a46393f46587448612bd91fb99fa65f89704c Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/157490 Commit-Queue: Erik Ernst <eernst@google.com> Reviewed-by: Bob Nystrom <rnystrom@google.com>