使用xUnit框架在C# Net Core2.1函数应用程序中模拟

Question

我正在尝试使用xUnit框架在C# .Net Core2.1函数应用程序中编写单元测试，其中类变量通过Autofac依赖项注入进行初始化。

public class TestClass
{
    private readonly ISampleLogger<SampleReporting> sampleLogger;
    private readonly IRequestSender requestSender;

    public SampleReporting(IDependencyResolver dependencyResolver)
    {
        dependencyResolver?.Resolve<ISampleLoggingStartup>().Configure();
        this.sampleLogger = dependencyResolver.Resolve<ISampleLogger<SampleReporting>>();
        this.requestSender = dependencyResolver.Resolve<IRequestSender>();
    }
...

public void FunctionToTest(string s)
{
    ...

我试图模拟dependencyresolver对象，但不知道如何模拟变量sampleLogger和requestSender，因为它们是在构造函数中进行内部设置的。任何线索都将不胜感激。

我试着这样模拟IDependencyResolver，但无法让它工作：

private readonly Mock<IDependencyResolver> dependencyResolverMock;

[Fact]
public void Test1()
{
    dependencyResolverMock.Setup(x => x.Resolve<It.IsAny<ISampleLoggingStartup>>().Configure());

Answer 1

在测试构造函数中使用以下代码对我来说效果很好：

public ReportingTest()
{
    dependencyResolverMock = new Mock<IDependencyResolver>();

    dependencyResolverMock.Setup(x => x.Resolve<ISampleLogger<SampleReporting>>()).Returns(Mock.Of<ISampleLogger<SampleReporting>>());
    dependencyResolverMock.Setup(x => x.Resolve<IRequestSender()).Returns(Mock.Of<IRequestSender>());
}