public async Task GetAsync_should_return_state_from_factory_if_message_can_start_saga()
{
var expectedState = new DummySagaState(Guid.NewGuid());
var message = StartDummySaga.New();
var messageContext = NSubstitute.Substitute.For <IMessageContext <StartDummySaga> >();
messageContext.Message.Returns(message);
var sagaStateFactory = NSubstitute.Substitute.For <ISagaStateFactory <DummySagaState> >();
sagaStateFactory.Create(message)
.Returns(expectedState);
var sagaStateRepo = NSubstitute.Substitute.For <ISagaStateRepository>();
sagaStateRepo.LockAsync(message.CorrelationId, expectedState, Arg.Any <CancellationToken>())
.Returns(Task.FromResult((expectedState, Guid.NewGuid())));
var sut = new SagaStateService <DummySaga, DummySagaState>(sagaStateFactory, sagaStateRepo);
var result = await sut.GetAsync(messageContext, CancellationToken.None);
result.state.Should().Be(expectedState);
}
public async Task SaveAsync_should_unlock_state()
{
var sagaStateFactory = NSubstitute.Substitute.For <ISagaStateFactory <DummySagaState> >();
var sagaStateRepo = NSubstitute.Substitute.For <ISagaStateRepository>();
var sut = new SagaStateService <DummySaga, DummySagaState>(sagaStateFactory, sagaStateRepo);
var state = new DummySagaState(Guid.NewGuid());
var lockId = Guid.NewGuid();
await sut.SaveAsync(state, lockId, null, CancellationToken.None);
await sagaStateRepo.Received(1)
.ReleaseLockAsync(state, lockId, null, CancellationToken.None);
}
public async Task GetAsync_should_throw_StateCreationException_if_saga_state_cannot_be_build()
{
var sagaStateFactory = NSubstitute.Substitute.For <ISagaStateFactory <DummySagaState> >();
var sagaStateRepo = NSubstitute.Substitute.For <ISagaStateRepository>();
var sut = new SagaStateService <DummySaga, DummySagaState>(sagaStateFactory, sagaStateRepo);
var message = StartDummySaga.New();
var messageContext = NSubstitute.Substitute.For <IMessageContext <StartDummySaga> >();
messageContext.Message.Returns(message);
var ex = await Assert.ThrowsAsync <StateCreationException>(() =>
sut.GetAsync(messageContext, CancellationToken.None));
ex.Message.Should().Contain("unable to create State instance with type");
}
public async Task GetAsync_should_throw_MessageException_if_message_cannot_start_saga()
{
var sagaStateFactory = NSubstitute.Substitute.For <ISagaStateFactory <DummySagaState> >();
var sagaStateRepo = NSubstitute.Substitute.For <ISagaStateRepository>();
var sut = new SagaStateService <DummySaga, DummySagaState>(sagaStateFactory, sagaStateRepo);
var message = DummySagaStarted.New();
var messageContext = NSubstitute.Substitute.For <IMessageContext <DummySagaStarted> >();
messageContext.Message.Returns(message);
var ex = await Assert.ThrowsAsync <MessageException>(() =>
sut.GetAsync(messageContext, CancellationToken.None));
ex.Message.Should().Contain($"Saga '{message.CorrelationId}' cannot be started by message");
}
public async Task SaveAsync_should_persist_outbox()
{
var sagaStateFactory = NSubstitute.Substitute.For <ISagaStateFactory <DummySagaState> >();
var sagaStateRepo = NSubstitute.Substitute.For <ISagaStateRepository>();
var outboxRepository = NSubstitute.Substitute.For <IOutboxRepository>();
var sut = new SagaStateService <DummySaga, DummySagaState>(sagaStateFactory, sagaStateRepo, outboxRepository);
var state = new DummySagaState(Guid.NewGuid());
var message = StartDummySaga.New();
state.AddToOutbox(message);
var lockId = Guid.NewGuid();
await sut.SaveAsync(state, lockId, CancellationToken.None);
await outboxRepository.Received(1)
.AppendAsync(message, Arg.Any <CancellationToken>());
}
