The unit test adapter failed to connect to the data source

Question

I'm having an issue with my Datasource for my unit test. I'm wanting to keep the records in XML. As far as I can tell this is supported but I keep getting this error "The unit test adapter failed to connect to the data source...".

I have set up my app.config as follows:

<configuration>
  <configSections>
    <section name="microsoft.visualstudio.testtools" type="Microsoft.VisualStudio.TestTools.UnitTesting.TestConfigurationSection, Microsoft.VisualStudio.QualityTools.UnitTestFramework, Version=10.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a"/>
  </configSections>
  <connectionStrings>
    <add name="PersonTestData" connectionString="Dsn=XML Files;dbq=PersonTestData.xml;defaultdir=.\; driverid=790;maxbuffersize=2048;pagetimeout=5" providerName="System.Data.Odbc" />
  </connectionStrings>
  <microsoft.visualstudio.testtools>
    <dataSources>
      <add name="PersonTestData" connectionString="PersonTestData" dataTableName="PersonData" dataAccessMethod="Sequential"/>
    </dataSources>
  </microsoft.visualstudio.testtools>
</configuration>

The Code that I'm using is this:

[TestMethod()]
[DeploymentItem("PersonTestData.xml")]
[DataSource("PersonTestData")]
public void CompareToTest()
{
    Person Test = (Person)TestContext.DataRow["Person"];
    Int32 result = Main.CompareTo(Test);
    Assert.IsNotNull(result);
}

And Finally the XML file It's self:

<?xml version="1.0" encoding="utf-8" ?>
<PersonData xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
  <Person>
    <LastName>Jones</LastName>
    <FirstName>Bill</FirstName>
    <Age>24</Age>
  </Person>
  <Person>
    <LastName>West</LastName>
    <FirstName>John</FirstName>
    <Age>24</Age>
  </Person>
  <Person>
   <LastName>Jones</LastName>
   <FirstName>Bill</FirstName>
   <Age>24</Age>
  </Person>
</PersonData>

Not sure where I'm going wrong at this point.

Answer 1

I think you don't need an ODBC connection string to read the xml file. Simply use the DataSource attribute as below. Also "PersonTestData.xml" properties. CopyToOutputDirectory set to "CopyAlways".

[TestClass]
public class UnitTest1
{
    private TestContext testContextInstance;
    public TestContext TestContext
    {
        get { return testContextInstance; }
        set { testContextInstance = value; }
    }

    [TestMethod]
    [DeploymentItem("PersonTestData.xml")]
    [DataSource("Microsoft.VisualStudio.TestTools.DataSource.XML",
               "|DataDirectory|\\PersonTestData.xml",
               "Person",
                DataAccessMethod.Sequential)]
    public void CompareToTest()
    {
        var row = TestContext.DataRow;
        var firstName = row["FirstName"].ToString();
        var lastName = row["LastName"].ToString();

        //Asserts...                 
    }
}