public void When_CastTo_called_with_null_as_example_Null_variable_type_is_used()
{
object obj = new Random();
Random example = null;
Assert.That(Change.CastTo(obj, example), Is.EqualTo(obj));
}
public void When_CastTo_called_with_mismatched_types_Exception_is_thrown()
{
Assert.Throws <InvalidCastException>(() => Change.CastTo(new Random(), new List()));
}