运行在构造函数和析构函数中输出一次初始化和拆卸代码

Question

在 xUnit 中，我需要运行一些代码 once，在执行任何测试之前，以及之后的一些代码所有测试都已完成。虽然这thread explains how to do it quite well, I want to do some printing inside the constructor and destructor, like shown in the code below, and that's the tricky part. Since Console.Writeline won't work, I looked for a workaround, which I found in this link。

public class TestsFixture : IDisposable
{
    protected readonly ITestOutputHelper _output;

    public TestsFixture(ITestOutputHelper output)
    {
        _output = output;

        // Do "global" initialization here; Only called once.
        _output.WriteLine("global init");
    }

    public void Dispose()
    {
        // Do "global" teardown here; Only called once.
        _output.WriteLine("global teardown");
    }
} 

public class HandlerTests : IClassFixture<TestsFixture>
{
    // All my tests are here
}

关于这里发生的事情的简要解释：

This code uses the IUseFixture interface to ensure that the global initialization/teardown functionality is only called once. For this version, you don't extend a base class from your test class but implement the IUseFixture interface where T refers to your fixture class

一切似乎都很好，但是当我运行测试时，出现错误（如下）。知道如何解决这个问题吗？

Test Outcome: Failed
Test Duration:    0:00:00,001

Result Message:   Class fixture type 'TestsPlatform.TestsFixture' had one or more unresolved constructor arguments: ITestOutputHelper output

Answer 1

documentation 说你可以在 test class 的构造函数中添加类型 ITestOutputHelper 的参数。我没有看到任何内容表明您可以将它作为参数添加到 test fixture class...

的构造函数中

此输出通过 ITestOutputHelper 没有意义，因为该机制的全部意义在于允许输出与特定测试相关联。您的 setup/teardown 是全局的，而不是每次测试。

您需要找到另一种方式来输出这些诊断信息。

运行在构造函数和析构函数中输出一次初始化和拆卸代码

run initialisation and teardown code once while outputting in the constructor and destructor

c#

xunit

运行 在构造函数和析构函数中输出一次初始化和拆卸代码

run initialisation and teardown code once while outputting in the constructor and destructor

c#

xunit

运行在构造函数和析构函数中输出一次初始化和拆卸代码