natsdotnet/tests/NATS.Server.Core.Tests/SubList/SubListNotificationTests.cs

using NATS.Server.Subscriptions;

namespace NATS.Server.Core.Tests;

public class SubListNotificationTests
{
    [Fact]
    public void Interest_change_notifications_are_emitted_for_local_and_remote_changes()
    {
        using var sl = new SubList();
        var changes = new List<InterestChange>();
        sl.InterestChanged += changes.Add;

        var sub = new Subscription { Subject = "orders.created", Sid = "1" };
        sl.Insert(sub);
        sl.Remove(sub);
        sl.ApplyRemoteSub(new RemoteSubscription("orders.*", null, "r1", "A"));
        sl.ApplyRemoteSub(RemoteSubscription.Removal("orders.*", null, "r1", "A"));

        changes.Count.ShouldBe(4);
        changes.Select(c => c.Kind).ShouldContain(InterestChangeKind.LocalAdded);
        changes.Select(c => c.Kind).ShouldContain(InterestChangeKind.RemoteAdded);
    }
}