using VoxelEngine.World;
using Xunit;

namespace VoxelEngine.Tests;

public class ChunkTests
{
    [Fact]
    public void Size_Is16()
    {
        Assert.Equal(16, Chunk.Size);
    }

    [Fact]
    public void NewChunk_IsAllAir()
    {
        var chunk = new Chunk();
        Assert.Equal((ushort)0, chunk[0, 0, 0]);
        Assert.Equal((ushort)0, chunk[15, 15, 15]);
    }

    [Fact]
    public void Indexer_StoresAndReturnsId()
    {
        var chunk = new Chunk();
        chunk[1, 2, 3] = 7;
        Assert.Equal((ushort)7, chunk[1, 2, 3]);
        Assert.Equal((ushort)0, chunk[3, 2, 1]);
    }

    [Theory]
    [InlineData(0, 0, 0, true)]
    [InlineData(15, 15, 15, true)]
    [InlineData(-1, 0, 0, false)]
    [InlineData(0, 16, 0, false)]
    public void InBounds_ChecksCoordinates(int x, int y, int z, bool expected)
    {
        Assert.Equal(expected, Chunk.InBounds(x, y, z));
    }
}