具有依赖注入构造函数参数的 XUnit 没有匹配的装置数据

发布于 2025-01-13 03:22:06 字数 573 浏览 1 评论 0原文

当我尝试使用 XUnit 执行简单的单元测试时，出现以下错误。

以下构造函数参数没有匹配的固定装置数据：IMyRepository myRepo

场景：当我提供学生姓名时，我正在检查学生学校是否正确。] 代码

public class UnitTest1
{
        private readonly IMyRepository _myRepo;


        public UnitTest1(IMyRepository myRepo)
        {
            this._myRepo = myRepo;
        }

        [Fact]
        public void TestOne()
        {
            var name = "Hillary";

            var r = this._myRepo.FindName(name);
            Assert.True(r.School == "Capital Hill School");
        }
}

原文

I am getting the following error when I am trying to execute a simple Unit Test using XUnit.

The following constructor parameters did not have matching fixture
data: IMyRepository myRepo

Scenario: When I supplied with the name of a student, I am checking if the student school is correct.]
Code

public class UnitTest1
{
        private readonly IMyRepository _myRepo;


        public UnitTest1(IMyRepository myRepo)
        {
            this._myRepo = myRepo;
        }

        [Fact]
        public void TestOne()
        {
            var name = "Hillary";

            var r = this._myRepo.FindName(name);
            Assert.True(r.School == "Capital Hill School");
        }
}

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我不在是我 2025-01-20 03:22:06

要在 XUnit 测试中注入依赖项，您需要定义一个固定装置。要提供的对象必须具有无参数构造函数，并且测试类必须从 IClassFixture 派生。

所以类似这样的事情应该有效：

public class MyRepository : IMyRepository
{
    public MyRepository() // No parameters
    {
        // ... Initialize your repository
    }
    // ... whatever else the class needs 
}

public class UnitTest1 : IClassFixture<MyRepository>
{
        private readonly IMyRepository _myRepo;

        public UnitTest1(MyRepository myRepo)
        {
            this._myRepo = myRepo;
        }

        [Fact]
        public void TestOne()
        {
            var name = "Hillary";

            var r = this._myRepo.FindName(name);
            Assert.True(r.School == "Capital Hill School");
        }
}

您还可以在 CollectionDefinition 中定义测试 Collection 及其固定装置

https://xunit.net/docs/shared-context 解释了如何操作。

To inject a dependency in an XUnit test you need to define a fixture. The object to be provided must have a paramaterless constructor, and the test class has to be derived from IClassFixture<YourFixture>.

So something like this should work:

public class MyRepository : IMyRepository
{
    public MyRepository() // No parameters
    {
        // ... Initialize your repository
    }
    // ... whatever else the class needs 
}

public class UnitTest1 : IClassFixture<MyRepository>
{
        private readonly IMyRepository _myRepo;

        public UnitTest1(MyRepository myRepo)
        {
            this._myRepo = myRepo;
        }

        [Fact]
        public void TestOne()
        {
            var name = "Hillary";

            var r = this._myRepo.FindName(name);
            Assert.True(r.School == "Capital Hill School");
        }
}

You can also define a test Collection and its fixture in the CollectionDefinition

The documentation at https://xunit.net/docs/shared-context explains how to do it.

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