Unable to cast object of type 'HashSet' to type 'IList'

[peter-perot]

Hi,

I have an object with a property of type 'HashSet'.

When I try to fill it, the following exception occurs:

Unable to cast object of type 'System.Collections.Generic.HashSet`1[System.String]' to type 'System.Collections.IList'.

In the source code a check is made against 'IEnumerable', and if true, a cast to 'IList' is made, which causes an exception.

[Tynamix]

Hey!
Thanks for your report, i will look for it!

[Tynamix]

Yes, thats a bug 😞 !
I will fix it with the next version. If you need it really fast, then you can use a custom RandomizerPlugin.
I wrote one for you:

public class HashSetPlugin<T> : IRandomizerPlugin<HashSet<T>>
{
    private readonly int minCount;
    private readonly int maxCount;

    public HashSetPlugin(uint minCount = 0, uint maxCount = UInt32.MaxValue)
    {
        this.minCount = (int)minCount;
        this.maxCount = (int)maxCount;
    }

    public HashSet<T> GetValue()
    {
        int countOfItems = Randomizer<int>.Create(new IntRange(this.minCount, this.maxCount));
        var createdItems = Randomizer<T>.Create(countOfItems);

        HashSet<T> result = new HashSet<T>();

        foreach (var createdItem in createdItems)
        {
            result.Add(createdItem);
        }

        return result;
    }
}

You can then use it as below:

public class Bug68Poco
{
    public HashSet<string> TestHashset { get; set; }
}

static void Main(string[] args)
{

    Filler<Bug68Poco> filler = new Filler<Bug68Poco>();
    filler.Setup()
            .OnType<HashSet<string>>().Use(new HashSetPlugin<string>(0, 100));

    Bug68Poco bug68Poco = filler.Create();

    foreach (string s in bug68Poco.TestHashset)
    {
        Console.WriteLine(s);
    }

    Console.ReadLine();
}

Hope this helps right now. Will fix it in the next version!

[peter-perot]

Thank you, it works with the plugin. :-)

Q: In the setup chain you wrote OnType<HashSet<string>>. Is there a way to configure it with kind of an open generic HashSet (HashSet<>), so that I'm not tied to string hash-sets?

[Tynamix]

hmm... i think this is not possible... But you are not really tied to string hashsets... You have just to setup the hashsets which have another typeparameter ... Like so:

Filler<Bug68Poco> filler = new Filler<Bug68Poco>();
    filler.Setup()
            .OnType<HashSet<string>>().Use(new HashSetPlugin<string>(0, 100))
            .OnType<HashSet<int>>().Use(new HashSetPlugin<int>(0, 10))
            .OnType<HashSet<SomeObject>>().Use(new HashSetPlugin<SomeObject>());

Its a little bit of annoying, i know! But i will fix that in the next version! Then you will not need a seperate plugin for that!

[peter-perot]

TY. 👍

[Tynamix]

will be fixed with #72