Testing

Testing

The GenHTTP.Testing package provides an easy way to write component tests for your application using a test framework of your choice. It provides both the ability to host your project in an isolated mode as well as convenience methods to run HTTP requests against your server.

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Projects created via project templates already feature a basic test setup.

Writing Tests

The following code shows how the TestHost can be used to spin up a server instance hosting the functionality of the app to be tested and how to run requests against this instance.

using GenHTTP.Testing;

[TestClass]
public sealed class MyTests
{

    [TestMethod]
    public async Task TestMyApp()
    {
        var app = ... // setup your app here

        using var runner = TestHost.Run(app);

        using var response = await runner.GetResponseAsync("/some/path");

        Assert.AreEqual(HttpStatusCode.OK, response.StatusCode);
    }

}

The framework uses the HttpClient to execute requests, so that the semantics are the same, e.g. when performing POST requests with a body:

var request = runner.GetRequest();

request.Method = HttpMethod.Post;
request.Content = new StringContent("My Body");

using var response = await runner.GetResponseAsync(request);

Response Handling

The test framework provides some extension methods to simplify reading typed responses.

using var response = await runner.GetResponseAsync();

var typed = await response.GetContentAsync<MyType>();

var typedNullable = await response.GetOptionalContentAsync<MyType>(); // might be null

Those methods allows to deserialize all formats supported by the GenHTTP framework (JSON, XML, form encoded, Protobuf).

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