Version: 9.2.0

Testing

Cleaning your providers#

Before or after each test you will need the default state of all StateNotifier or Bloc. So you can use ProvidersContainer.clear();

setUp((){
  ProviderScope.clear();
});

or


tearDown((){
  ProviderScope.clear();
});

Overriding providers#

Consider the next provider

final loginProvider = Provider.state<LoginNotifier, LoginState>(
  (_) => LoginNotifier(
    LoginState(),
    someRepo: SomeRepo(),
  ),
);

Sometimes, for our unit tests or widget tests, we need to mock the behavior of a certain class. In those cases, we can use the overrideCreator function to override the way our provider creates our notifiers.

class MockSomeRepo extends Mock implements SomeRepo {}

Next before your test you can use the setUp method.

setUp((){
  loginProvider.overrideCreator(
    (_) => LoginNotifier(
      LoginState(),
      someRepo: MockSomeRepo(), // mocked repo
    ),
  );

});