Umbraco-CMS/tests/Umbraco.Tests.Common/Builders/GenericCollectionBuilder.cs

// Copyright (c) Umbraco.
// See LICENSE for more details.

using System.Collections.Generic;
using System.Linq;

namespace Umbraco.Cms.Tests.Common.Builders
{
    public class GenericCollectionBuilder<TBuilder, T>
        : ChildBuilderBase<TBuilder, IEnumerable<T>>
    {
        private readonly IList<T> _collection;

        public GenericCollectionBuilder(TBuilder parentBuilder)
            : base(parentBuilder) => _collection = new List<T>();

        public override IEnumerable<T> Build()
        {
            IEnumerable<T> collection = _collection?.ToList() ?? Enumerable.Empty<T>();
            return collection;
        }

        public GenericCollectionBuilder<TBuilder, T> WithValue(T value)
        {
            _collection.Add(value);
            return this;
        }
    }
}