public void MultipleValuesArgumentMustBeTheLastArgument()
{
var app = new CommandLineApplication();
app.Argument("first", "First argument", multipleValues: true);
var ex = Assert.Throws<InvalidOperationException>(() => app.Argument("second", "Second argument"));
Assert.Contains($"The last argument 'first' accepts multiple values. No more argument can be added.",
ex.Message);
}
internal void AddCommandLineParameterTo(CommandLineApplication command)
{
var isBoolProperty = Property.PropertyType == typeof(bool);
var optionAttribute = Property.GetOptionAttribute();
//Note: This means all bool properties are treated as options by default.
//ArgumentAttribute on such a property is ignored.
if (isBoolProperty || optionAttribute != null)
{
//This is just so that all the below code does not need to
//check for null on attribute. Not pure but works.
var nullSafeOptionAttribute = optionAttribute ?? new OptionAttribute();
var template = GetOptionTemplate(nullSafeOptionAttribute);
var optionType = isBoolProperty ? CommandOptionType.NoValue : CommandOptionType.SingleValue;
var option = command.Option(template, nullSafeOptionAttribute.Description ?? "", optionType);
_valueAccessor = () =>
{
if (isBoolProperty)
{
return option.HasValue() ? true : (nullSafeOptionAttribute.DefaultValue ?? false);
}
else
{
return option.HasValue() ? option.Value() : (nullSafeOptionAttribute.DefaultValue ?? "");
}
};
}
else
{
//And all other string properties are considered arguments by default
//even if the ArgumentAttribute is not mentioned on them.
var argumentAttribute = Property.GetArgumentAttribute();
var description = argumentAttribute != null && !string.IsNullOrWhiteSpace(argumentAttribute.Description)
? argumentAttribute.Description
: "";
var argument = command.Argument(Property.Name, description);
_valueAccessor = () => argument.Value;
}
}