想为 HttpTrigger GET 编写单元测试。
具有如下方法签名:
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。如何使用此注入(inject)编写单元测试用例,
试图创建
ILogger
的 stub 使用下面的东西,但这需要LoggerFactory
.public class LoggerWriter : Microsoft.Extensions.Logging.Logger<ILogger>
{
public LoggerWriter() : base() // this needs logger factory.
{
}
}
httptrigger azure 函数的任何示例单元测试以克服上述问题(
Ilogger
注入(inject))都是有帮助的。
最佳答案
当主题方法需要可以轻松模拟和注入(inject)的抽象时,确实不需要扩展实现问题。
采取以下简化示例
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,只需提供必要的依赖项以完成测试并断言预期的行为。
[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
}
关于dependency-injection - 如何使用 ILogger 为 azure 函数(Httptrigger)编写单元测试,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/51699663/