I have followed the docs and setup a testing project, with a

UmbracoTestServerBase

test class https://docs.umbraco.com/umbraco-cms/implementation/integration-testing#testing-from-controller-to-database, there's a

UmbracoApiController

that I wanted to run an integration test on, following the docs, I wrote:

c#
[TestFixture]
[UmbracoTest(Database = UmbracoTestOptions.Database.NewSchemaPerTest)]
public class CustomApiControllerTest: UmbracoTestServerTestBase
{
  [Test]
  public async Task EnsureSuccessStatusCode()
  {
    var url = PrepareApiControllerUrl<CustomApiController>(x => x.Get());
    var response = await Client.GetAsync(url);
    Assert.That(response.StatusCode, Is.EqualTo(HttpStatusCode.OK));
  }
}

The

Get()

endpoint just returns

Ok()

, however I am repeatedly getting a 404 not found error, running the test in debug mode, it doesn't appear that the controller endpoint is being hit at all, is there some steps required for UmbracoTestServerTestBase to find the controllers in a project?