public void AddBlankFirstValue_ShouldAddABlankValueToBeginingOfList()
{
var values = new[]
{
new StringValue("First"),
new StringValue("Second")
};
var enumerator = values.AddBlankFirstValue().GetEnumerator();
enumerator.MoveNext();
Assert.That(enumerator.Current.Value, Is.EqualTo("0"));
enumerator.MoveNext();
Assert.That(enumerator.Current.Value, Is.EqualTo("First"));
enumerator.MoveNext();
Assert.That(enumerator.Current.Value, Is.EqualTo("Second"));
}