public void SendCommand_WithStoredEvents_AppliesEventsBeforeHandlingCommand()
{
// Arrange
var stubEventStore = new FakeEventStore();
var mockEvent = new FakeEvent();
stubEventStore.Save(new AdditionalEvents(Guid.NewGuid(),
new ArrayList()
{
mockEvent
}));
var stubMessageDispatcher = new EventSourcedMessageDispatcher(stubEventStore);
stubMessageDispatcher
.RegisteredHandlerFor <AppliesFakeEventHandlesFakeCommand, FakeCommand>();
var mockCommand = new FakeCommand();
// Act
stubMessageDispatcher.SendCommand(mockCommand);
// Assert
Assert.Equal(mockEvent,
AppliesFakeEventHandlesFakeCommand.applied_event);
Assert.Equal(mockCommand,
AppliesFakeEventHandlesFakeCommand.handled_command);
}
public void SendCommand_WithoutRegisteredHandler_ThrowsNoHandlerRegisteredException()
{
// Arrange
var fakeMessageDispatcher = new EventSourcedMessageDispatcher(
new FakeEventStore());
var mockCommand = new FakeCommand();
// Act
Action sendUnhandledCommand = () => fakeMessageDispatcher
.SendCommand(mockCommand);
// Assert
Assert.Throws <NoHandlerRegistered>(sendUnhandledCommand);
}
public void SendCommand_WithRegisteredHandler_IsHandledByRegisteredHandler()
{
// Arrange
var fakeMessageDispatcher = new EventSourcedMessageDispatcher(
new FakeEventStore());
var mockCommand = new FakeCommand();
fakeMessageDispatcher
.RegisteredHandlerFor <HandlesFakeCommand, FakeCommand>();
// Act
fakeMessageDispatcher.SendCommand(mockCommand);
// Assert
Assert.Equal(mockCommand, HandlesFakeCommand.handled_command);
}
public void RegisterHandlerFor_SameCommand_ThrowsCommandHandlerAlreadyRegisteredException()
{
// Arrange
var fakeMessageDispatcher = new EventSourcedMessageDispatcher(
new FakeEventStore());
fakeMessageDispatcher
.RegisteredHandlerFor <FirstFakeCommandHandler, FakeCommand>();
// Act
Action RegisterHandlerForSameCommand = () => fakeMessageDispatcher
.RegisteredHandlerFor <SecondFakeCommandHandler, FakeCommand>();
// Assert
Assert.Throws <CommandHandlerAlreadyRegistered>(
RegisterHandlerForSameCommand);
}
public void ScanInstance_WithEventSubscriber_RegistersEventSubscriber()
{
// Arrange
var stubMessageDispatcher = new EventSourcedMessageDispatcher(
new FakeEventStore());
var mockGuid = Guid.NewGuid();
stubMessageDispatcher.ScanInstance(new HandlesFakeCommandEmitsFakeEvents());
stubMessageDispatcher.ScanInstance(new StaticFakeEventSubscriber());
// Act
stubMessageDispatcher.SendCommand(
new FakeCommand()
{
Id = mockGuid
});
// Assert
Assert.Equal(mockGuid, StaticFakeEventSubscriber.handled_event.Id);
}
public void SendCommand_WithCommandThatEmitsEvent_SavesEventInEventStore()
{
// Arrange
var stubEventStore = new FakeEventStore();
var stubMessageDispatcher = new EventSourcedMessageDispatcher(stubEventStore);
var mockGuid = Guid.NewGuid();
stubMessageDispatcher
.RegisteredHandlerFor <HandlesFakeCommandEmitsFakeEvents, FakeCommand>();
// Act
stubMessageDispatcher.SendCommand(
new FakeCommand()
{
Id = mockGuid
});
// Assert
Assert.Equal(mockGuid, ((FakeEvent)(stubEventStore
.LoadEventsFor(mockGuid) as ArrayList)[0]).Id);
}
public void RegisterSubscriberFor_EventEmittedFromCommand_HandlesCommand()
{
// Arrange
var stubMessageDispatcher = new EventSourcedMessageDispatcher(
new FakeEventStore());
var mockSubscriber = new SubscribesToFakeEvent();
var mockGuid = Guid.NewGuid();
stubMessageDispatcher
.RegisterSubscriberFor <FakeEvent>(mockSubscriber);
stubMessageDispatcher
.RegisteredHandlerFor <HandlesFakeCommandEmitsFakeEvents, FakeCommand>();
// Act
stubMessageDispatcher.SendCommand(
new FakeCommand()
{
Id = mockGuid
});
// Assert
Assert.Equal(mockGuid, mockSubscriber.handled_event.Id);
}