Firebaseがテストで動かない

[TetsuFe]

https://github.com/FirebaseExtended/flutterfire/issues/2761

https://stackoverflow.com/questions/61188604/after-executing-flutter-clean-command-the-project-build-folder-deleted-now

https://stackoverflow.com/questions/57982493/dart-flutter-web-unit-testing-errors-error-not-found-darthtml

[TetsuFe]

channel masterでは動いたが、別のエラーが発生

$ fvm flutter test --platform chrome
00:02 +0: /Users/tetsu/flworks/flutter_novel/test/chat_test.dart: chat list displaying widget test                                                                                                     
══╡ EXCEPTION CAUGHT BY WIDGETS LIBRARY ╞═══════════════════════════════════════════════════════════
The following JSNoSuchMethodError was thrown building MessageListView(dirty):
TypeError: Cannot read property 'firestore' of undefined