This will result in:
tools/test.py -n foobar
The named configuration "foobar" does not exist. The following configurations are available:
* analyzer-asserts-linux
* analyzer-asserts-mac
* analyzer-asserts-win
* ...
Change-Id: I2fadc2ab3ae6f2b34dd373d84365d44ef27c7b8b
Reviewed-on: https://dart-review.googlesource.com/c/87325
Reviewed-by: Daco Harkes <dacoharkes@google.com>
Reviewed-by: Alexander Thomas <athom@google.com>
Commit-Queue: Martin Kustermann <kustermann@google.com>