Rename set literal tests to end in _test

Change-Id: Ifc33abb2279554373bdfb9c1c54f468d7fd683c2
Reviewed-on: https://dart-review.googlesource.com/c/94480
Commit-Queue: Alexander Thomas <athom@google.com>
Auto-Submit: Aske Simon Christensen <askesc@google.com>
Reviewed-by: Alexander Thomas <athom@google.com>
diff --git a/tests/language_2/set_literal_in_initializer.dart b/tests/language_2/set_literal_in_initializer_test.dart
similarity index 100%
rename from tests/language_2/set_literal_in_initializer.dart
rename to tests/language_2/set_literal_in_initializer_test.dart
diff --git a/tests/language_2/set_literals_in_annotations.dart b/tests/language_2/set_literals_in_annotations_test.dart
similarity index 100%
rename from tests/language_2/set_literals_in_annotations.dart
rename to tests/language_2/set_literals_in_annotations_test.dart