bloc_signals_test 0.1.3

Declarative unit testing utilities for BlocSignal and CubitSignal.

⚡ bloc_signals_test

"With the rigor of Bloc and the flex and speed of Signal"

Declarative unit testing utilities for bloc_signals and CubitSignal instances.

bloc_signals_test provides blocSignalTest, a declarative helper tailored specifically for synchronous reactive signal state propagation, state de-duplication, and observer isolation.

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🌐 Ecosystem Packages

Package	Purpose	Pub.dev Link
bloc_signals	Core pure-Dart state containers, event registry, & VM Service telemetry	📦 pub.dev
bloc_signals_flutter	Flutter UI widgets (BlocSignalProvider, BlocSignalBuilder, BlocSignalListener, BlocSignalConsumer, BlocSignalSelector)	📦 pub.dev
bloc_signals_riverpod	Bidirectional Riverpod interop adapters (toBlocSignal(ref), toProvider())	📦 pub.dev
bloc_signals_hydrate	Persistent state storage (HydratedCubitSignal, HydratedBlocSignal)	📦 pub.dev
bloc_signals_devtools	Dedicated Flutter DevTools extension inspector UI	📦 pub.dev
bloc_signals_test	Declarative unit testing helpers (blocSignalTest)	📦 pub.dev
bloc_signals_lint	Static analysis lints & IDE quick-fixes	📦 pub.dev
otel_bloc_signals	OpenTelemetry tracing observers	📦 pub.dev

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⚡ Key Features

• 🎯 Declarative Assertions: Verify emitted states in exact order using expect.
• ⏱️ Async Support: Await asynchronous event handlers or timers using wait.
• ⏭️ State Skipping: Skip initial emissions using skip.
• 🚨 Error Testing: Verify exceptions caught in onError using errors.
• 🧹 Automatic Cleanup: Guarantees observer restoration and bloc.close() post-test.

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🚀 Getting Started

Add bloc_signals_test to your pubspec.yaml:

dev_dependencies:
  bloc_signals_test: ^0.1.0
  test: ^1.24.0

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💡 Quick Examples

1. Cubit Unit Test (blocSignalTest)

import 'package:bloc_signals_test/bloc_signals_test.dart';
import 'package:test/test.dart';

void main() {
  group('CounterCubit', () {
    blocSignalTest<CounterCubit, int>(
      'emits [1] when increment is called',
      build: CounterCubit.new,
      act: (cubit) => cubit.increment(),
      expect: () => [1],
    );
  });
}

2. Async Event Bloc Test (wait & errors)

blocSignalTest<DataBloc, DataState>(
  'emits [DataLoading, DataLoaded] when FetchData succeeds',
  build: () => DataBloc(repository: mockRepo),
  act: (bloc) => bloc.add(FetchData()),
  wait: const Duration(milliseconds: 100),
  expect: () => [
    const DataLoading(),
    const DataLoaded('sample_data'),
  ],
);

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📜 License

MIT License. See LICENSE for details.