using System;
using System.Utility;
using Chernobyl.Extensions;
using NUnit.Framework;

namespace Chernobyl.Generation.Test
{
    [TestFixture, Description("Tests for the Beat type.")]
    public class BeatTests
    {
        [Test]
        public void AddBeatThrowsWhenGivenDistanceLessThanZero()
        {
            Assert.Throws<ArgumentOutOfRangeException>(() => Func.StaticFactory(0).AddBeat(-1, () => 1));
        }

        [Test]
        public void AddBeatProducesCorrectOutput()
        {
            var pattern = Func.StaticFactory(0).AddBeat(3, () => 1);

            new[] { pattern(), pattern(), pattern(), pattern(), pattern(), pattern() }
                .IsEqualTo(new [] { 0, 0, 1, 0, 0, 1}, "pattern");
        }
    }
}