using WhiteMagic;
using WhiteMagic.Native;
using WhiteMagic.ThreadEnvironment;
using Xunit;

namespace WhiteMagicTest.ThreadEnvironment;

public sealed class ManagedTebTests
{
    [Fact]
    public void Read_current_thread_teb_fields_returns_plausible_values()
    {
        using var magic = Magic.OpenInProcess();
        using var teb = new ManagedTeb(magic.Memory, (int)NativeMethods.GetCurrentThreadId());

        Assert.NotEqual(IntPtr.Zero, teb.ReadTebAddress());
        Assert.NotEqual(IntPtr.Zero, teb.ReadStackBase());
        Assert.NotEqual(IntPtr.Zero, teb.ReadStackLimit());

        // The stack grows down, so the base is above the limit on x86/x64.
        Assert.True((nuint)teb.ReadStackBase() > (nuint)teb.ReadStackLimit());
    }
}