想为HttpTrigger GET编写单元测试。 方法签名如下:
public static async Task<HttpResponseMessage> Run(
[HttpTrigger(AuthorizationLevel.Function, "get", Route = null)]
HttpRequestMessage request,
ILogger log)
在这里,ILogger
是Microsoft.Extensions.Logging的类型。
如何通过此注入编写单元测试用例,
尝试使用以下内容创建ILogger
的存根,但这需要LoggerFactory
。
public class LoggerWriter : Microsoft.Extensions.Logging.Logger<ILogger>
{
public LoggerWriter() : base() // this needs logger factory.
{
}
}
httptrigger天蓝色功能的任何样本单元测试都可以解决上述问题(Ilogger
注入)。
答案 0 :(得分:3)
当主题方法需要可以轻松模拟和注入的抽象时,确实不需要扩展实现问题。
采用以下简化示例
public static async Task<HttpResponseMessage> Run(
[HttpTrigger(AuthorizationLevel.Function, "get", Route = null)]
HttpRequestMessage request,
ILogger log
) {
//...omitted for brevity
}
要单独对上述功能进行单元测试,只需提供要执行的测试所需的依赖关系,并断言预期的行为。
[TestMethod]
public async Task Function_Should_Return_Desired_Response() {
//Arrange
var request = new HttpRequestMessage();
//...populate as needed for test
var logger = Mock.Of<ILogger>(); //using Moq for example
//...setup expected behavior
//Act
var response = await MyFunction.Run(request, logger);
//Assert
//...assert desired behavior in the response
}
答案 1 :(得分:2)
有一篇很棒的博客文章涵盖了这个主题:) https://medium.com/@jeffhollan/serverless-devops-and-ci-cd-part-1-f76f0357cba4