// <copyright file="HlcTimestampTests.Causality.cs" company="StellaOps">
// Copyright (c) StellaOps. Licensed under BUSL-1.1.
// </copyright>
using FluentAssertions;
using Xunit;

namespace StellaOps.HybridLogicalClock.Tests;

public sealed partial class HlcTimestampTests
{
    [Fact]
    public void IsBefore_And_IsAfter_RespectOrdering()
    {
        var earlier = CreateTimestamp(1000, "node1", 1);
        var later = CreateTimestamp(1000, "node1", 2);

        earlier.IsBefore(later).Should().BeTrue();
        later.IsAfter(earlier).Should().BeTrue();
    }

    [Fact]
    public void IsConcurrent_SameTimeCounterDifferentNode_ReturnsTrue()
    {
        var a = CreateTimestamp(1000, "node-a", 3);
        var b = CreateTimestamp(1000, "node-b", 3);

        a.IsConcurrent(b).Should().BeTrue();
        b.IsConcurrent(a).Should().BeTrue();
    }
}