XUnit Net Core Web API 集成测试："The ConnectionString property has not been initialized."

Question

只是想为 NET Core Web 构建一个集成测试项目 API。因此，我遵循了几个示例，包括这个 (https://dotnetcorecentral.com/blog/asp-net-core-web-api-integration-testing-with-xunit/)，自然而然地，我运行进入了问题。当我运行简单的 GET 测试时，我得到一个异常： "System.InvalidOperationException : The ConnectionString property has not been initialized."

如有任何帮助，我们将不胜感激。

Answer 1

对于server = new TestServer(new WebHostBuilder().UseStartup<Startup>());，您需要像

一样手动配置appsettings.json路径

var server = new TestServer(WebHost.CreateDefaultBuilder()
                    .UseContentRoot(@"D:\Edward\SourceCode\AspNetCore\Tests\IntegrationTestMVC") 
                    // This is the path for project which needs to be test
                    .UseStartup<Startup>()
    );

为方便起见，我建议您尝试 Basic tests with the default WebApplicationFactory。

The WebApplicationFactory constructor infers the app content root path by searching for a WebApplicationFactoryContentRootAttribute on the assembly containing the integration tests with a key equal to the TEntryPoint assembly System.Reflection.Assembly.FullName. In case an attribute with the correct key isn't found, WebApplicationFactory falls back to searching for a solution file (*.sln) and appends the TEntryPoint assembly name to the solution directory. The app root directory (the content root path) is used to discover views and content files.

参考：How the test infrastructure infers the app content root path

Answer 2

我必须在派生的 WebApplicationFactory 中覆盖 CreateHostBuilder 以添加连接字符串的配置（因为它是从用户机密中读取的）。

    public class CustomApplicationFactory : WebApplicationFactory<Sedab.MemberAuth.Startup>
    {
        protected override IHostBuilder CreateHostBuilder()
        {
            var initialData = new List<KeyValuePair<string, string>> {
                new KeyValuePair<string, string>("ConnectionStrings:DefaultConnection", "test")
            };

            return base.CreateHostBuilder().ConfigureHostConfiguration(config => config.AddInMemoryCollection(initialData));
        }
    }

XUnit Net Core Web API 集成测试："The ConnectionString property has not been initialized."

XUnit Net Core Web API Integration Test: "The ConnectionString property has not been initialized."

integration-testing

xunit

asp.net-core-webapi