C#协议.消费者驱动的接触测试.提供者的书写测试

Question

我正试图了解协约，并且正在使用PACT网库来实现这一点。

我对消费者的测试运行良好，但我试图在提供者上设置测试。我使用的是在Visual中使用Web模板时加载的基本Web项目--它创建了值API控制器。我只是测试Get IEumerable<string>方法作为对流程的端到端测试。我也在仿效PACT-Net github网站上的例子。下面是我到目前为止的测试：

    [Fact]
    public void EnsureValuesReturnedFromApi()
    {
        var config = new PactVerifierConfig
        {
            Outputters = new List<IOutput>
            {
                new XUnitOutput(_output)
            }
        };

    using (WebApp.Start<TestStartup>(serviceUri))
    {
        var pactVerifier = new PactVerifier(config);
        pactVerifier.ProviderState($"{serviceUri}/provider-states")
            .ServiceProvider("Values API", serviceUri)
            .HonoursPactWith("Consumer")
            .PactUri("http://localhost:8080/pacts/provider/Values%20API/consumer/Consumer/latest")
            .Verify();
    }
}

当我运行单元测试时，我会得到以下错误：

Reading pact at http://localhost:8080/pacts/provider/Values%20API/consumer/Consumer/latest

Verifying a pact between Consumer and Values API
  Given When I want the values
    Getting a list
      with GET /api/values
        returns a response which
          has status code 200 (FAILED - 1)
          has a matching body (FAILED - 2)
          includes headers
            "Accept" with value "application/json" (FAILED - 3)
            "Content-Type" with value "application/json" (FAILED - 4)

Failures:

  1) Verifying a pact between Consumer and Values API Given When I want the values Getting a list with GET /api/values returns a response which has status code 200
     Failure/Error: set_up_provider_state interaction.provider_state, options[:consumer]

     Pact::ProviderVerifier::SetUpProviderStateError:
       Error setting up provider state 'When I want the values' for consumer 'Consumer' at http://localhost:9222/provider-states. response status=500 response body=

  2) Verifying a pact between Consumer and Values API Given When I want the values Getting a list with GET /api/values returns a response which has a matching body
     Failure/Error: set_up_provider_state interaction.provider_state, options[:consumer]

     Pact::ProviderVerifier::SetUpProviderStateError:
       Error setting up provider state 'When I want the values' for consumer 'Consumer' at http://localhost:9222/provider-states. response status=500 response body=

  3) Verifying a pact between Consumer and Values API Given When I want the values Getting a list with GET /api/values returns a response which includes headers "Accept" with value "application/json"
     Failure/Error: set_up_provider_state interaction.provider_state, options[:consumer]

     Pact::ProviderVerifier::SetUpProviderStateError:
       Error setting up provider state 'When I want the values' for consumer 'Consumer' at http://localhost:9222/provider-states. response status=500 response body=

  4) Verifying a pact between Consumer and Values API Given When I want the values Getting a list with GET /api/values returns a response which includes headers "Content-Type" with value "application/json"
     Failure/Error: set_up_provider_state interaction.provider_state, options[:consumer]

     Pact::ProviderVerifier::SetUpProviderStateError:
       Error setting up provider state 'When I want the values' for consumer 'Consumer' at http://localhost:9222/provider-states. response status=500 response body=

1 interaction, 1 failure

Failed interactions:

* Getting a list given When I want the values

我想我的问题是，我是否需要实际测试对/api/value的HTTP调用，还是遗漏了其他东西？

谢谢

Answer 1

因此，在与同事交谈并得到提示后，这要归功于创业班。我没有意识到它有效地启动了web应用程序，所以

public class TestStartup
{
    public void Configuration(IAppBuilder app)
    {
        var startup = new Startup();
        app.Use<ProviderStateMiddleware>(); 
        startup.Configuration(app);
    }
}

调用应用程序中的启动类：

public class Startup
{
    public void Configuration(IAppBuilder app)
    {
        var httpConfig = new HttpConfiguration();
        httpConfig.MapHttpAttributeRoutes();

        httpConfig.Routes.MapHttpRoute(
            name: "DefaultApi",
            routeTemplate: "api/{controller}/{id}",
            defaults: new { id = RouteParameter.Optional }
        );

        var appXmlType = httpConfig.Formatters.XmlFormatter.SupportedMediaTypes
                                   .FirstOrDefault(t => t.MediaType == "application/xml");
        httpConfig.Formatters.XmlFormatter.SupportedMediaTypes.Remove(appXmlType);

        app.UseWebApi(httpConfig);
    }
}

我的单元测试通过了。希望这能帮上忙。