using System;
using NUnit.Framework;

namespace Chernobyl.Creation
{
    [TestFixture, Description("Tests for StaticFactory<T> type and its " +
        "base classes.")]
    public class StaticFactoryTests : FactoryTests<string>
    {
        [Test, Description("Ensures the StaticFactory<T> can return a null " +
            "value as it's single instance.")]
        public void NullStaticFactoryTest()
        {
            var factory = new StaticFactory<string>(null);
            var result = factory.Create();
            Assert.AreEqual(null, result,
                "The created instance was not null when it was expected to be.");

            Assert.Fail();
        }

        protected override IFactory<string> CreateSuccessfulFactory()
        {
            return new StaticFactory<string>(_instance);
        }

        protected override IFactory<string> CreateFailureFactory()
        {
            // This class does not have a fail condition.
            return null;
        }

        protected override string GetProperlyCreatedItem()
        {
            return _instance;
        }

        String _instance = new string('A', 1);
    }
}