ASP.NET Core Integration testing

 Integration testing your ASP.NET Core API's shouldn't be too difficult thanks to the Microsoft.AspNetCore.Mvc.Testing package.

First add the package to your project:

dotnet add package Microsoft.AspNetCore.Mvc.Testing

Now you can inject the WebApplicationFactory<TEntryPoint> in your tests:

	public class ApiTests:IClassFixture<WebApplicationFactory<Api.Startup>>
	{
	public HttpClient Client { get; }
	public ApiTests(WebApplicationFactory<Api.Startup> fixture)
	{
	Client = fixture.CreateClient();
	}
	[Fact]
	public async Task Test()
	{
	var request = new HttpRequestMessage();
	var response = await Client.SendAsync(request);
	response.EnsureSuccessStatusCode();
	}
	}

view raw ApiTests.cs hosted with ❤ by GitHub

You can tweak the configuration by inheriting from the WebApplicationFactory and use one of the overrides:

	public sealed class SelfHostedApi : WebApplicationFactory<Api.Startup>
	{
	protected override IHostBuilder CreateHostBuilder()
	{
	return Host.CreateDefaultBuilder().ConfigureWebHostDefaults(builder =>
	builder.UseStartup<Api.Startup>());
	}
	protected override void ConfigureWebHost(IWebHostBuilder builder)
	{
	builder.ConfigureServices(services =>
	{
	});
	}
	}

view raw SelfHostedApi.cs hosted with ❤ by GitHub