This tests basic null safety use cases:
Sound null safety
An opted-in app (test_app/bin/test_app_sound.dart)) that uses an opted in
package (test_pkg).
Run with:
$ cd test_app
$ dart run bin/test_app_sound.dart
Running with sound null safety: true
Hello: 42, null
Unsound null safety
An opted-in app (test_app/bin/test_app_unsound.dart)) that uses an opted in
package (test_pkg) and an unmigrated package (test_pkg_unmigrated).
Run with:
$ cd test_app
$ dart --no-sound-null-safety run bin/test_app_unsound.dart
Running with sound null safety: false
Hello: 42, 42
Running tests
Sound tests
Run the sound test test with:
$ cd test_app
$ dart test test/test_app_test.dart
00:01 +3: All tests passed!
Unound tests
Run the unsound test test with:
$ cd test_app
$ dart --no-sound-null-safety test test/test_app_unsound_test.dart
00:01 +2: All tests passed!