public async Task PublishAsync_should_return_directly_if_there_are_no_more_jobs()
{
var storage = Substitute.For<IFileStorage>();
var container = Substitute.For<IContainer>();
var sut = new ContainerEventBus(storage, container);
await sut.PublishAsync(Substitute.For<ApplicationEvent>());
container.ReceivedCalls().Should().BeEmpty();
}
public async Task executed_job_should_be_stored()
{
var storage = Substitute.For<IFileStorage>();
var container = Substitute.For<IContainer>();
var appEvent = new ApplicationEvent();
var sut = new ContainerEventBus(storage, container);
await sut.PublishAsync(appEvent);
storage.Received().PushAsync(appEvent);
}
public void a_comamnd_handlr_is_mandatory()
{
var storage = Substitute.For<IFileStorage>();
var container = Substitute.For<IContainer>();
var scope = Substitute.For<IContainerScope>();
storage.PopEventAsync().Returns(Task.FromResult(new ApplicationEvent()));
container.CreateScope().Returns(scope);
scope.ResolveAll(typeof(IApplicationEventSubscriber<ApplicationEvent>))
.Returns(new object[0]);
var sut = new ContainerEventBus(storage, container);
var task = sut.PublishAsync(Substitute.For<ApplicationEvent>());
task.Wait();
}
public void make_sure_That_both_handlers_are_invoked()
{
var storage = Substitute.For<IFileStorage>();
var container = Substitute.For<IContainer>();
var scope = Substitute.For<IContainerScope>();
var handler1 = Substitute.For<IApplicationEventSubscriber<ApplicationEvent>>();
var handler2 = Substitute.For<IApplicationEventSubscriber<ApplicationEvent>>();
storage.PopEventAsync().Returns(Task.FromResult(new ApplicationEvent()));
container.CreateScope().Returns(scope);
scope.ResolveAll(typeof(IApplicationEventSubscriber<ApplicationEvent>))
.Returns(new object[] {handler1, handler2});
var sut = new ContainerEventBus(storage, container);
var task = sut.PublishAsync(Substitute.For<ApplicationEvent>());
task.Wait();
sut.ExecuteJobAsync().Wait();
handler1.ReceivedWithAnyArgs().HandleAsync(null);
handler2.ReceivedWithAnyArgs().HandleAsync(null);
}
public async Task invoke_the_handler_successfully()
{
var storage = Substitute.For<IFileStorage>();
var container = Substitute.For<IContainer>();
var scope = Substitute.For<IContainerScope>();
var handler1 = Substitute.For<IApplicationEventSubscriber<ApplicationEvent>>();
storage.PopEventAsync().Returns(Task.FromResult(new ApplicationEvent()));
container.CreateScope().Returns(scope);
scope.ResolveAll(typeof(IApplicationEventSubscriber<ApplicationEvent>))
.Returns(new object[] { handler1 });
var sut = new ContainerEventBus(storage, container);
await sut.PublishAsync(Substitute.For<ApplicationEvent>());
sut.ExecuteJobAsync().Wait();
handler1.ReceivedWithAnyArgs().HandleAsync(null);
}
public async Task make_sure_that_the_Second_handler_is_invoked_if_the_first_fails()
{
var storage = Substitute.For<IFileStorage>();
var container = Substitute.For<IContainer>();
var scope = Substitute.For<IContainerScope>();
var handler1 = Substitute.For<IApplicationEventSubscriber<ApplicationEvent>>();
var handler2 = Substitute.For<IApplicationEventSubscriber<ApplicationEvent>>();
var ApplicationEvent = new ApplicationEvent();
handler1
.When(x => x.HandleAsync(ApplicationEvent))
.Do(x => { throw new InvalidCastException(); });
storage.PopEventAsync().Returns(Task.FromResult(ApplicationEvent));
container.CreateScope().Returns(scope);
scope.ResolveAll(typeof(IApplicationEventSubscriber<ApplicationEvent>))
.Returns(new object[] { handler1, handler2 });
EventHandlerFailedEventArgs actual = null;
var sut = new ContainerEventBus(storage, container);
sut.HandlerFailed += (sender, args) => actual = args;
await sut.PublishAsync(Substitute.For<ApplicationEvent>());
await sut.ExecuteJobAsync();
handler2.ReceivedWithAnyArgs().HandleAsync(null);
}
public async Task trigger_failed_event_When_handler_throws_an_Exception()
{
var storage = Substitute.For<IFileStorage>();
var container = Substitute.For<IContainer>();
var scope = Substitute.For<IContainerScope>();
var handler1 = Substitute.For<IApplicationEventSubscriber<ApplicationEvent>>();
var ApplicationEvent = new ApplicationEvent();
handler1
.When(x => x.HandleAsync(ApplicationEvent))
.Do(x => { throw new InvalidCastException(); });
storage.PopEventAsync().Returns(Task.FromResult(ApplicationEvent));
container.CreateScope().Returns(scope);
scope.ResolveAll(typeof(IApplicationEventSubscriber<ApplicationEvent>))
.Returns(new object[] { handler1 });
EventHandlerFailedEventArgs actual = null;
var sut = new ContainerEventBus(storage, container);
sut.HandlerFailed += (sender, args) => actual = args;
await sut.PublishAsync(Substitute.For<ApplicationEvent>());
await sut.ExecuteJobAsync();
actual.Should().NotBeNull();
actual.ApplicationEvent.Should().BeSameAs(ApplicationEvent);
actual.HandlerCount.Should().Be(1);
actual.Failures[0].Handler.Should().Be(handler1);
actual.Failures[0].Exception.Should().BeOfType<InvalidCastException>();
}
