public void Parse_DeberiaRechazarParse()
{
Assert.False(Cuit.TryParse("27-5001941-9", out var cuit));
Assert.Null(cuit);
}
public void Parse_DeberiaValidarParse()
{
Assert.True(Cuit.TryParse("27-5001941-7", out var cuit));
Assert.Equal("27-05001941-7", cuit.ToString());
}