MSTest数据驱动测试集来自DataSource的行的DisplayName

Question

如何在数据驱动的测试中设置数据行的DisplayName,其中数据源是XML,提供者是Microsoft.VisualStudio.TestTools.DataSource.XML.

XML:

<?xml version="1.0" encoding="utf-8" ?>
<environments>
    <environment><name>IE</name></environment>
    <environment><name>Chrome</name></environment>
</environments>

App配置:

<!-- CONNECTION STRINGS SETTINGS -->
<connectionStrings>
    <add name="IE_Chrome" connectionString="IE_Chrome.xml" providerName="Microsoft.VisualStudio.TestTools.DataSource.XML"/>
</connectionStrings>
<!-- PARAMETERIZING TEST SETTINGS -->
<microsoft.visualstudio.testtools>
    <dataSources>
        <add name="IE_Chrome" connectionString="IE_Chrome" dataTableName="environment" dataAccessMethod="Sequential"/>
    </dataSources>
</microsoft.visualstudio.testtools>

输出:

我想显示环境名称而不是"数据行0".

Answer 1

是否可以使用自定义数据源属性。一个例子可以是：

public class XmlCustomDataSourceAttribute : Attribute, ITestDataSource
{
    public IEnumerable<object[]> GetData(MethodInfo methodInfo)
    {
        foreach (var environment in YourStaticXmlParser.GetEnvironments())
        {
            yield return new object[] { environment.Name };
        }
    }

    public string GetDisplayName(MethodInfo methodInfo, object[] data)
    {
        if (data != null)
        { 
            return string.Format("Target Environmment- {0} ({1})", methodInfo.Name, data[0]); 
        }

        return null;
    }
}

测试方法应该如下所示：

        [DataTestMethod]
        [XmlCustomDataSource]
        public void Should_Blur(string environmentName)
        {
            var actualEnvironment = SomeMethodToGetActualEnvironment();
            Assert.AreEqual(environmentName, actualEnvironment);
        }

最后你的测试细节将是：