Why I _love_ event sourcing

gistfile1.cs

[Test]
public void After_successfully_deploying_a_component_it_triggers_its_start()
{
    Given("id",
            Created(),
            LockRequested(),
            Locked(),
            VersionDetermined(),
            DeploymentPlanned("A", "1"),
            DeploymentPlanned("B", "2"),
            DeploymentRequested("A", "1", "opId"))
        .When(x => x.HandleDeploySuccess("opId", "deplId", new FakeUniqueIdGenerator("id")))
        .Then(
            DeploymentSucceeded(),
            StartRequested("1", "deplId"));
}