MSTest 代码覆盖率在 UWP 应用程序中返回空

编程问答 2022-05-28

问题描述

我的 UWP 应用程序中 MSTest 的代码覆盖率有问题。 每次我尝试运行覆盖时，我都会得到以下结果： Empty results generated: No binaries were instrumented. Make sure the tests ran,required binaries were loaded,had matching symbol files,and were not excluded through custom settings. For more @R_184_4045@ion see https://go.microsoft.com/fwlink/?LinkID=253731

我已按照上述链接中的所有不同故障排除事项进行操作。但他们似乎没有解决它。我不知道是什么导致了这种情况，但这里有一些与我的环境相关的信息。

我的测试项目的参考：

enter image description here

我引用的 *.pdb 文件存在于我的测试项目的构建目录中。

[TestClass]
    public class UnitModelTests
    {
        [DataTestMethod]

        #region Metric

        [DaTarow(LengthMetric.MM,"1mm",UnitType.Metric)]
        [DaTarow(LengthMetric.CM - LengthMetric.MM,"9mm",UnitType.Metric)]
        [DaTarow(LengthMetric.CM,"1cm",UnitType.Metric)]
        [DaTarow(LengthMetric.DM - LengthMetric.CM,"9cm",UnitType.Metric)]
        [DaTarow(LengthMetric.DM,"1dm",UnitType.Metric)]
        [DaTarow(LengthMetric.M - LengthMetric.DM,"9dm",UnitType.Metric)]
        [DaTarow(LengthMetric.M,"1m",UnitType.Metric)]
        [DaTarow(LengthMetric.KM - LengthMetric.M,"999m",UnitType.Metric)]
        [DaTarow(LengthMetric.KM,"1km",UnitType.Metric)]
        [DaTarow(LengthMetric.KM * 100,"100km",UnitType.Metric)]

        #endregion

        #region Imperial

        [DaTarow(LengthImperial.Inch,"1 inch",UnitType.Imperial)]
        [DaTarow(LengthImperial.Feet,"1 feet",UnitType.Imperial)]
        [DaTarow(LengthImperial.Yard,"1 yard",UnitType.Imperial)]
        [DaTarow(LengthImperial.Chain,"1 chain",UnitType.Imperial)]
        [DaTarow(LengthImperial.Furlong,"1 furlong",UnitType.Imperial)]
        [DaTarow(LengthImperial.Mile,"1 mile",UnitType.Imperial)]
        [DaTarow(LengthImperial.League,"1 league",UnitType.Imperial)]

        #endregion

        public void LengthToStringTest(double startLength,string expected,UnitType unitType)
        {
            var length = new Length(startLength);
            Assert.AreEqual(expected,length.UnitToString(unitType));
        }

        [DataTestMethod]

        #region Metric

        [DaTarow(VolumeMetric.MM,"1mm^3",UnitType.Metric)]
        [DaTarow(VolumeMetric.MM * 9,"9mm^3",UnitType.Metric)]
        [DaTarow(VolumeMetric.CM,"1cm^3",UnitType.Metric)]
        [DaTarow(VolumeMetric.CM * 9,"9cm^3",UnitType.Metric)]
        [DaTarow(VolumeMetric.DM,"1dm^3",UnitType.Metric)]
        [DaTarow(VolumeMetric.DM * 9,"9dm^3",UnitType.Metric)]
        [DaTarow(VolumeMetric.M,"1m^3",UnitType.Metric)]
        [DaTarow(VolumeMetric.M * 999,"999m^3",UnitType.Metric)]
        [DaTarow(VolumeMetric.KM,"1km^3",UnitType.Metric)]
        [DaTarow(VolumeMetric.KM * 100,"100km^3",UnitType.Metric)]

        #endregion

        #region Imperial

        [DaTarow(VolumeImperial.FluidOunce,"1 Fluid ounce",UnitType.Imperial)]
        [DaTarow(VolumeImperial.Gill,"1 Gill",UnitType.Imperial)]
        [DaTarow(VolumeImperial.Pint,"1 Pint",UnitType.Imperial)]
        [DaTarow(VolumeImperial.Quart,"1 Quart",UnitType.Imperial)]
        [DaTarow(VolumeImperial.gallon,"1 gallon",UnitType.Imperial)]

        #endregion

        public void VolumetoStringTest(double startVolume,UnitType unitType)
        {
            var volume = new Volume(startVolume);
            Assert.AreEqual(expected,volume.UnitToString(unitType));
        }
    }

测试结果： 此处显示的所有测试均返回成功。

构建配置：

Build Configuration

MSTest 项目的 NuGet 包：

NuGet Packages

如果需要更多信息，请发表评论。

解决方法

UWP MSTest 实现目前不支持代码覆盖率。 Here 是一个指向讨论它的博客的链接。解决方法可能是将 UWP Class Libary 更改为 .NET Standard Class Libary。然后将 UWP MSTest project 更改为 .NET Core 变体。更改此设置并通过测试资源管理器运行代码覆盖率后，您将获得所需的结果。 enter image description here

有关此问题的更好解释，您可以访问有关此问题的网站。 https://www.redgreencode.com/unit-testing-uwp-apps/