using NUnit.Framework;
using SVSim.BattleNode.Reliability;

namespace SVSim.UnitTests.BattleNode.Reliability;

[TestFixture]
public class InboundTrackerTests
{
    [Test]
    public void Observe_FirstSeenPubSeq_ReturnsDispatchTrue()
    {
        var t = new InboundTracker();
        Assert.That(t.Observe(pubSeq: 1), Is.True);
    }

    [Test]
    public void Observe_SamePubSeqTwice_SecondReturnsFalse()
    {
        var t = new InboundTracker();
        t.Observe(1);
        Assert.That(t.Observe(1), Is.False);
    }

    [Test]
    public void Observe_DifferentPubSeqs_BothDispatch()
    {
        var t = new InboundTracker();
        Assert.That(t.Observe(1), Is.True);
        Assert.That(t.Observe(2), Is.True);
    }

    [Test]
    public void HighWaterMark_TracksHighestObserved()
    {
        var t = new InboundTracker();
        t.Observe(3);
        t.Observe(1);
        t.Observe(5);
        Assert.That(t.HighWaterMark, Is.EqualTo(5));
    }
}