Using WireMock in UnitTests

WireMock with your favorite UnitTest framework

Obviously you can use your favourite test framework and use WireMock within your tests. In order to avoid flaky tests you should:

• let WireMock choose dynamicaly ports. It might seem common sens, avoid hard coded ports in your tests!
• clean up the request log or shutdown the server at the end of each test

Below a simple example using Nunit and NFluent test assertion library:

[SetUp]
public void StartMockServer()
{
    _server = FluentMockServer.Start();
}

[Test]
public async void Should_respond_to_request()
{
  // given
   _sut = new SomeComponentDoingHttpCalls();

  _server
    .Given(Request.Create().WithUrl("/foo").UsingGet())
    .RespondWith(
      Response.Create()
        .WithStatusCode(200)
        .WithBody(@"{ ""msg"": ""Hello world!"" }")
    );

  // when
  var response = _sut.DoSomething();
    
  // then
  Check.That(response).IsEqualTo(EXPECTED_RESULT);
    
  // and optionnaly
  Check.That(_server.SearchLogsFor(Request.WithUrl("/error*")).IsEmpty();
}

[TearDown]
public void ShutdownServer()
{
    _server.Stop();
}