Visual Studio :: Unit Test Visual Studio 2008 Professional Edition?

I have VS 2008 Professional Edition.....I want to test a function like this:

public int getIdByName(string name)
{
var item=from x in DATAB
where x.name=name
select x.id;
.
.
return idValue;
}

now I test end I have:

[TestMethod()]
public getIdByNameTest()
{
string name="Bob"
int expected = 1;
int actual;
actual = ClassGET.getIdByName(name);
Assert.AreEqual(expected, actual);
Assert.Inconclusive("Verify the correctness of this test method.");
}

The error in "test run" is:

Failed ......[Class]....... Test method threw exception: System.ArgumentException: The specified named connection is either not found in the configuration that is not for use with the EntityClient provider or thought is invalid