Scenarios

gistfile1.cs

[Test]
[TestCase("foo", "bar")]
[TestCase("jack", "jill")]
public void  Transformer(string a, string b)
{
   using (ApprovalResults.ForScenario(a,b))
   {
        Approvals.Verify(Transform(a,b));
   }
}

// Will Produce 
Class.Transformer.ForScenario.foo.bar.approved.txt
Class.Transformer.ForScenario.jack.jill.approved.txt