c# - 在单元测试中设置 IHostingEnvironment

Question

我目前正在将项目从 .NET Core RC1 升级到新的 RTM 1.0 版本。在 RC1 中，有一个 IApplicationEnvironment，在 1.0 版本中被替换为 IHostingEnvironment

在 RC1 中我可以做到这一点

public class MyClass
{
    protected static IApplicationEnvironment ApplicationEnvironment { get;private set; }

    public MyClass()
    {
        ApplicationEnvironment = PlatformServices.Default.Application;
    }
}

有人知道如何在 v1.0 中实现这一点吗？

public class MyClass
{
    protected static IHostingEnvironment HostingEnvironment { get;private set; }

    public MyClass()
    {
        HostingEnvironment = ???????????;
    }
}

Answer 1

如果需要，您可以使用模拟框架来模拟IHostEnvironment，或者通过实现接口(interface)来创建假版本。

开设这样的类(class)...

public class MyClass {
    protected IHostingEnvironment HostingEnvironment { get;private set; }

    public MyClass(IHostingEnvironment host) {
        HostingEnvironment = host;
    }
}

您可以使用 Moq 设置单元测试示例...

public void TestMyClass() {
    //Arrange
    var mockEnvironment = new Mock<IHostingEnvironment>();
    //...Setup the mock as needed
    mockEnvironment
        .Setup(m => m.EnvironmentName)
        .Returns("Hosting:UnitTestEnvironment");
    //...other setup for mocked IHostingEnvironment...

    //create your SUT and pass dependencies
    var sut = new MyClass(mockEnvironment.Object);

    //Act
    //...call you SUT

    //Assert
    //...assert expectations
}