public void Name_DuplicateName_ShouldThrowException()
{
var commandParser = A.Fake <CommandParser <DataTypesCommandOptions> >();
var targetProperty = typeof(DataTypesCommandOptions).GetProperty("Decimals");
var optionParser = A.Fake <DecimalListOptionParser>(ob => ob.WithArgumentsForConstructor(() => new DecimalListOptionParser(targetProperty, "decimals")));
var setup = new DecimalListOptionSetup <DataTypesCommandOptions>(commandParser, optionParser);
A.CallTo(() => commandParser.CanOptionParserUseOptionName(optionParser, "newName")).Returns(false);
setup.Invoking(a => a.Name("newName"))
.Should()
.Throw <ArgumentException>();
}
