public void Should_throw_on_set_state_to_null()
{
var process = new PizzaFulfillmentProcess();
Should.Throw <InvalidOperationException>(
() => process.SetState(null)
);
}
public void Should_leave_current_state_null_when_set_state_with_null()
{
var process = new PizzaFulfillmentProcess();
process.SetState(new PizzaFulfillmentState()
{
CurrentState = null
});
process.State.CurrentState.ShouldBeNull();
}
public void Should_throw_on_set_state_with_invalid_state_string()
{
var process = new PizzaFulfillmentProcess();
Should.Throw <Exception>(
() => process.SetState(new PizzaFulfillmentState()
{
CurrentState = "InvalidStateName"
})
);
}
public async Task Should_transition_on_message_to_completion()
{
var process = new PizzaFulfillmentProcess();
process.SetState(new PizzaFulfillmentState()
{
CurrentState = "Ordered"
});
process.State.CurrentState.ShouldBe("Ordered");
var prepareDate = DateTime.UtcNow;
await process.Handle(new PizzaPreparedEvent()
{
PreparedAt = prepareDate
}, _fixture.FakeContext);
process.State.CurrentState.ShouldBe("Ordered");
process.State.PreparedAtUtc.ShouldBe(prepareDate);
var payDate = DateTime.UtcNow;
await process.Handle(new PizzaPaidForEvent()
{
PaidAt = payDate
}, _fixture.FakeContext);
process.State.CurrentState.ShouldBe("Ready");
process.State.PaidAtUtc.ShouldBe(payDate);
var shipDate = DateTime.UtcNow;
await process.Handle(new PizzaShippedEvent()
{
ShippedAt = shipDate
}, _fixture.FakeContext);
process.State.CurrentState.ShouldBe("OutForDelivery");
process.State.ShippedAtUtc.ShouldBe(shipDate);
var deliverDate = DateTime.UtcNow;
await process.Handle(new PizzaDeliveredEvent()
{
DeliveredAt = deliverDate
}, _fixture.FakeContext);
process.State.CurrentState.ShouldBe("Complete");
process.State.DeliveredAtUtc.ShouldBe(deliverDate);
process.State.CompletedAtUtc.Value.ShouldBeGreaterThan(deliverDate);
}
public void Should_throw_on_message_with_no_handler_in_state()
{
var process = new PizzaFulfillmentProcess();
process.SetState(new PizzaFulfillmentState()
{
CurrentState = "Ordered"
});
Should.Throw <InvalidMessageForStateException>(
() => process.Handle(
new PizzaDeliveredEvent()
{
DeliveredAt = DateTime.UtcNow
},
_fixture.FakeContext)
);
}
public void Should_not_instantiate_state_on_new()
{
var process = new PizzaFulfillmentProcess();
process.State.ShouldBeNull();
}
