Second filter conditions test - Support boolean properties to flutter_bloc_list_manager

filter_conditions_bloc_test.dart

blocTest(
  'filtering one item on a boolean property should still add both items',
  build: () async {
    whenListen(
      _sourceBloc,
      Stream.value(MockSourceBlocClassItems([_mockItem1])),
    );

    return FilterConditionsBloc<MockSourceBlocClassItems>(
      sourceBloc: _sourceBloc,
      filterProperties: ['conditional'],
    );
  },
  expect: [
    ConditionsInitialized(
      activeConditions: <String>{},
      availableConditions: {
        'conditional': [
          'True',
          'False',
        ],
      },
    )
  ],
);