Visual Studio 2013 测试资源管理器

Question

我创建了一个包含 2 个项目的简单 C#/.Net 解决方案：

• 一个类库。
• 具有单个 UnitTest 类的单元测试项目，我已将 Moq 添加到该项目中。

然后我创建了三个 UnitTest 方法，它们使用 Moq 模拟单个类，然后将其注入另一个类。

using System;
using System.Collections.Generic;
using Microsoft.VisualStudio.TestTools.UnitTesting;
using Moq;

namespace MockSimple.Test
{
    [TestClass]
    public class UnitTest1
    {
        [TestMethod]
        public void TestMethod1()
        {
            var mock = new Mock<ClassImplementingFunctionality>();
            mock.Setup(functionality => functionality.Add(It.IsAny<int>(), It.IsAny<int>())).Returns(4);
            var classUnderTest = new ClassUnderTest(mock.Object);
            classUnderTest.Method(2,2);
            mock.Verify(m => m.Add(It.IsAny<int>(), It.IsAny<int>()), Times.Exactly(1));
        }

        [TestMethod]
        [ExpectedException(typeof(ArgumentException))]
        public void TestMethod2()
        {
            var mock = new Mock<ClassImplementingFunctionality>();
            mock.Setup(functionality => functionality.Add(It.IsAny<int>(), It.IsAny<int>())).Returns(0);
            var classUnderTest = new ClassUnderTest(mock.Object);
            classUnderTest.Method(10,5);
        }

        [TestMethod]
        public void TestMethod3()
        {
            var ints = new List<int> {1, 2, 3, 4};
            var mock = new Mock<ClassImplementingFunctionality>();
            mock.Setup(functionality => functionality.Add(It.IsAny<int>(), It.IsAny<int>())).Returns(4);
            var classUnderTest = new ClassUnderTest(mock.Object);
            classUnderTest.LoopInts(ints);
            mock.Verify(m => m.Add(It.IsAny<int>(), It.IsAny<int>()), Times.Exactly(ints.Count));
        }

        [TestMethod]
        public void TestMethod4()
        {
            var ints = new List<int> { 1, 2, 3, 4, -5, -2, -7 };
            var mock = new Mock<ClassImplementingFunctionality>();
            mock.Setup(functionality => functionality.Add(It.IsAny<int>(), It.IsAny<int>())).Returns(4);
            var classUnderTest = new ClassUnderTest(mock.Object);
            classUnderTest.LoopInts(ints);
            mock.Verify(m => m.Add(It.IsAny<int>(), It.IsAny<int>()), Times.Exactly(4));
        }

    }
}

但是当尝试使用 VS2013 中的内置测试管理器运行测试方法时，我在测试输出窗口中收到以下错误：

------ Run test started ------
The composition produced a single composition error. The root cause is provided below. Review the CompositionException.Errors property for more detailed information.
Value does not fall within the expected range.
 Resulting in: An exception occurred while trying to create an instance of type 'Microsoft.VisualStudio.TestWindow.Model.TestGroupCollection'.
 Resulting in: Cannot activate part 'Microsoft.VisualStudio.TestWindow.Model.TestGroupCollection'.
 Element: 'Microsoft.VisualStudio.TestWindow.Model.TestGroupCollection' -->  Microsoft.VisualStudio.TestWindow.Model.TestGroupCollection
 Resulting in: Cannot get export 'Microsoft.VisualStudio.TestWindow.Model.TestGroupCollection (ContractName="Microsoft.VisualStudio.TestWindow.Model.TestGroupCollection")' from part 'Microsoft.VisualStudio.TestWindow.Model.TestGroupCollection'.
 Element: Microsoft.VisualStudio.TestWindow.Model.TestGroupCollection (ContractName="Microsoft.VisualStudio.TestWindow.Model.TestGroupCollection") -->  Microsoft.VisualStudio.TestWindow.Model.TestGroupCollection
 ========== Run test finished: 4 run (0:00:00,3464634) ==========* 

我可以使用 Resharper 单元测试框架轻松运行测试方法。

对于我来说，MSTest 似乎正在尝试进行一些依赖注入或寻找 MEF 或 Unity 配置。

有什么想法吗？

Answer 1

格雷西，格雷西...

在开发者命令提示符下运行 devenv /rootSuffix exp

上面的命令解决了问题:-)