WireMock.Net VS AutoFixture

I'd say that without wanting to refactor the code a little bit (maybe moving those HttpClients into a service so that they are easily mocked) your best bet would be to use something like WireMock or MockHttp.

WireMock

WiremockNet https://github.com/WireMock-Net/WireMock.Net

In this post, I'll explain how to create mocks for HTTP APIs in narrow integration tests using the WireMock.Net library.

Recently was pointed to WireMock for testing purposes.

I use WireMock (@ Java) to start a local webserver alongside the tests, this webserver will provide ‘real’ responses to the client. Here’s the C# equivalent: https://github.com/WireMock-Net/WireMock.Net

You could try out WireMock.Net: https://github.com/WireMock-Net/WireMock.Net/wiki/Using-WireMock-in-UnitTests

Use WireMock to mock responses from the endpoint that FooClient interacts with. This lets you exercise all of the code contained in FooClient in a realistic way, without using mocks, but still get the different responses you expect.

Yes, it does feel like some of the "standard stuff" in other more nuanced languages are missing (especially miss AutoFixture ngl). Some of those are a conscious decison by the golang team for example.

Our first test is very easy, I like to name my tests as MethodName_GivenCondition_ShouldExpectedResult to follow the pattern, I have added GetById_GivenRecordDoesNotExist_ShouldReturnNull and I am going to leavarage excellent AutoFixture to get a new Guid as parameter. For this test we don't need arrange part, we would skip to the act and then assert. For Assertion I am going to use FluentAssertions. For this test we need to assert the returned result is null.

The next test to talk about, is that if this was a bank, we would have multiple customers, who can hold multiple accounts that we need to calculate the interest for. You could manually construct these objects if you want, but I'm going to use a package called AutoFixture to make life easier.

AutoFixture is an amazing library that simplifies the process of creating test data in .NET. If for some reason you don't use this fantastic tool, it's time to consider it. Today, I'm going to share some tips for using AutoFixture that will be beneficial for developers of all skill levels. Let's get started!

AutoFixture

Ensuring that your test is still readable and not bloated by the setup of those variables may be quite a challenge but hopefully no more with AutoFixture, let's see how!

One neat library for creating and generating test data is AutoFixture.  The creators describe it as follows:

First time I heard of Bogus, looks interesting, been using AutoFixture for those will definitely take a look at it.