Description:

riverpod test

Package #
Package is a port of felangel's bloc_test, modified to work with Riverpod Providers.
Increase code coverage by testing all riverpod providers.
Installation #
For a Flutter project:
flutter pub add --dev riverpod_test
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For a Dart project:
dart pub add --dev riverpod_test
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Usage #
testProvider
import 'package:riverpod_test.dart';

testProvider(
'expect [0]',
provider: counterProvider,
expect: () => [0],
);

final counterProvider = Provider<int>((ref) => 0);
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testNotifier
testNotifier(
'expect [2] when increment is called twice and skip: 1',
provider: counterNotifierProvider,
act: (notifier) => notifier
..increment()
..increment(),
skip: 1,
expect: () => [2],
);

final counterNotifierProvider =
NotifierProvider<CounterNotifier, int>(CounterNotifier.new);

class CounterNotifier extends Notifier<int> {
@override
int build() => 0;

void increment() => state++;
}

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testAsyncNotifier
testAsyncNotifier<CounterAsyncNotifier, int>(
'expect [AsyncData(1)] when call increment',
provider: counterAsyncNotifierProvider(0),
act: (notifier) => notifier.increment(),
expect: () => <AsyncValue<int>>[const AsyncData(1)],
);

testAsyncNotifier(
'verify if mockRepository sideEffect is called',
provider: sideEffectAsyncNotifierProvider(1),
overrides: [repositoryProvider.overrideWithValue(mockRepository)],
act: (notifier) => notifier.increment(),
verify: (_) => verify(mockRepository.sideEffect).called(1),
);

final counterAsyncNotifierProvider =
AsyncNotifierProviderFamily<CounterAsyncNotifier, int, int>(
CounterAsyncNotifier.new,
);

class CounterAsyncNotifier extends FamilyAsyncNotifier<int, int> {
@override
FutureOr<int> build(int initialValue) => initialValue;

void increment() => state = AsyncData(value + 1);
}

class MockRepository extends Mock implements Repository {}

final sideEffectAsyncNotifierProvider =
AsyncNotifierProviderFamily<SideEffectAsyncNotifier, int, int>(
SideEffectAsyncNotifier.new,
);

class SideEffectAsyncNotifier extends FamilyAsyncNotifier<int, int> {
@override
FutureOr<int> build(int initialValue) => initialValue;

Repository get repository => ref.watch(repositoryProvider);

void increment() {
repository.sideEffect();
state = AsyncData(value + 1);
}
}
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testResultProvider
testResultProvider<Repository>(
'expect [1] when incrementCounter is called',
provider: repositoryProvider,
act: (result) => result.incrementCounter(),
expect: () => [1],
);

final repositoryProvider = Provider<Repository>((ref) => Repository());

class Repository {
int incrementCounter() => 1;
}

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testStateNotifier
testStateNotifier<CounterStateNotifier, int>(
'expect [0] when decrement is called and seed: 1',
provider: counterStateNotifierProvider,
act: (notifier) => notifier.decrement(),
seed: 1,
wait: const Duration(milliseconds: 100),
expect: () => <int>[0],
);

final counterStateNotifierProvider =
StateNotifierProvider<CounterStateNotifier, int>(
(ref) => CounterStateNotifier(),
);

class CounterStateNotifier extends StateNotifier<int> {
CounterStateNotifier() : super(0);

void increment() => state++;

Future<void> decrement() async {
await Future<void>.delayed(const Duration(milliseconds: 100));
state--;
}
}

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License

For personal and professional use. You cannot resell or redistribute these repositories in their original state.

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