Enum with 0 value not shown on Example

[DimonSmart]

public class MyOption { [Option('t', "type", Required = true, HelpText = "My entity")] public EntityType MyEntityType { get; set; } public enum MyEntityType { X0, // Example for X0 is empty. If change this line to X0 =1, everything is ok X1, X2 }

    [Usage(ApplicationAlias = "...")]
    public static IEnumerable<Example> Examples
    {
        get
        {
            foreach (EntityType entityType in Enum.GetValues(typeof(EntityType)))
            {
                yield return new Example(entityType.ToString(), new MyOption { MyEntityType = entityType});
            }
        }
    }
}

[nemec]

This looks like a bug around examples with Required set to true. The example is empty because X0 is the default value for this enum - if you remove Required you'll find that myapp.exe with no arguments sets MyEntityType to X0 automatically. myapp.exe and myapp.exe -t X0 produce the exact same result.

But the example generator should look at whether the option is required and include it whether or not it's the default value.

[njqdev]

I took a look at this again and noticed that other value types have the same issue.

   class Options_With_Examples_Having_Default_Values
    {
        [Option('t', "type", HelpText = "My entity")]
        public EntityType MyEntityType { get; set; }

        public enum EntityType
        {
            T0
        }

        [Option('v', "value")]
        public int Value { get; set; }
        [Option('d')]
        public double Double { get; set; }
        [Option('b')]
        public bool Bool { get; set; }

        [Usage(ApplicationAlias = "test.exe")]
        public static IEnumerable<Example> Examples
        {
            get
            {
                yield return new Example("1", new Options_With_Examples_Having_Default_Values { MyEntityType = EntityType.T0 });
                yield return new Example("2", new Options_With_Examples_Having_Default_Values { Value = 1, Double = 0.1, Bool = true });
            }
        }
    }

Returns

1:
  test.exe --type T0
2:
  test.exe --type T0

and the same example with non-default values returns

1:
  test.exe --type T0
2:
  test.exe -d 0,1 --type T0 --value 1

The enum is included in both examples too, because of the change I made in #452.

[shubhiroy]

If you are looking for help on this.. I would be glad to take it up @nemec @ericnewton76 @moh-hassan

It would be my first open-source contribution

Thanks In Advance :)