using System;
using System.Buffers.Binary;
using AcDream.Core.Net.Messages;
using Xunit;

namespace AcDream.Core.Net.Tests.Messages;

public sealed class AllegianceRequestsTests
{
    [Fact]
    public void BuildSwear_EncodesOpcodeAndTarget()
    {
        byte[] body = AllegianceRequests.BuildSwear(gameActionSequence: 3, patronGuid: 0xAAAAu);

        Assert.Equal(16, body.Length);
        Assert.Equal(AllegianceRequests.GameActionEnvelope,
            BinaryPrimitives.ReadUInt32LittleEndian(body));
        Assert.Equal(3u,
            BinaryPrimitives.ReadUInt32LittleEndian(body.AsSpan(4)));
        Assert.Equal(AllegianceRequests.SwearOpcode,
            BinaryPrimitives.ReadUInt32LittleEndian(body.AsSpan(8)));
        Assert.Equal(0xAAAAu,
            BinaryPrimitives.ReadUInt32LittleEndian(body.AsSpan(12)));
    }

    [Fact]
    public void BuildBreak_EncodesOpcodeAndTarget()
    {
        byte[] body = AllegianceRequests.BuildBreak(gameActionSequence: 5, targetGuid: 0xBBBBu);
        Assert.Equal(AllegianceRequests.BreakOpcode,
            BinaryPrimitives.ReadUInt32LittleEndian(body.AsSpan(8)));
        Assert.Equal(0xBBBBu,
            BinaryPrimitives.ReadUInt32LittleEndian(body.AsSpan(12)));
    }
}