LSL.FluentAssertions.Rebus 1.0.4

LSL.FluentAssertions.Rebus

A convenience library to short cut common assertions when using the Rebus.TestHelpers library.

Each of the HaveXXX methods returns a the standard collection assertion object provided by FluentAssertions

Simple assertion of a sent message

As we can see in the following example we are just asserting the message content via the regular collection assertion method SatisfyRespectively that is provided by FluentAsserttions

using LSL.FluentAssertions.Rebus;
...
var bus = new FakeBus();
bus.Send("a message");
bus.Should().HaveMessageCount(1)
    .And
    .HaveSentMessages<string>()
    .And
    .SatisfyRespectively(m => m.CommandMessage.Should().Be("a message"));

Testing for multiple messages

Here we assert against a sent message and a published event.

NOTE: Since each method returns the underlying message type supported by Rebus.TestHelpers we had to use CommandMessage to access the sent message and EventMessage to access the published event.

using LSL.FluentAssertions.Rebus;
...
var bus = new FakeBus();
bus.Send("a message");
bus.Publish("an event");

bus.Should().HaveMessageCount(2);
bus.Should().HaveSentMessages<string>()
    .And.SatisfyRespectively(m => m.CommandMessage.Should().Be("a message"));

bus.Should().HavePublishedMessages<string>()
    .And.SatisfyRespectively(m => m.EventMessage.Should().Be("an event"));

Assertion method mappings to Rebus

The following table outlines what type of message is returned by each assertion method.