﻿using System.Collections.Generic;
using Content.Shared.Utility;
using NUnit.Framework;

namespace Content.Tests.Shared.Utility
{
    [Parallelizable]
    [TestFixture]
    [TestOf(typeof(ContentHelpers))]
    public class ContentHelpers_Test
    {

        public static readonly IEnumerable<(double val, double max, int levels, int expected)> TestData = new(double, double, int, int)[]
        {
            // Testing odd level counts. These are easy.
            (-1, 10, 5, 0),
            ( 0, 10, 5, 0),
            ( 0.01f, 10, 5, 1),
            ( 1, 10, 5, 1),
            ( 2, 10, 5, 1),
            ( 2.5f, 10, 5, 1),
            ( 2.51f, 10, 5, 2),
            ( 3, 10, 5, 2),
            ( 4, 10, 5, 2),
            ( 5, 10, 5, 2),
            ( 6, 10, 5, 2),
            ( 7, 10, 5, 2),
            ( 7.49f, 10, 5, 2),
            ( 7.5f, 10, 5, 3),
            ( 8, 10, 5, 3),
            ( 9, 10, 5, 3),
            (10, 10, 5, 4),
            (11, 10, 5, 4),

            // Even level counts though..
            ( 1, 10, 6, 1),
            ( 2, 10, 6, 1),
            ( 3, 10, 6, 2),
            ( 4, 10, 6, 2),
            ( 5, 10, 6, 2),
            ( 6, 10, 6, 3),
            ( 7, 10, 6, 3),
            ( 8, 10, 6, 4),
            ( 9, 10, 6, 4),
            (10, 10, 6, 5),
        };

        [Parallelizable]
        [Test]
        public void Test([ValueSource(nameof(TestData))] (double val, double max, int levels, int expected) data)
        {
            (double val, double max, int levels, int expected) = data;
            Assert.That(ContentHelpers.RoundToLevels(val, max, levels), Is.EqualTo(expected));
        }
    }
}
