using NATS.Server.Gateways;

namespace NATS.Server.Gateways.Tests;

public class GatewayAdvancedSemanticsTests
{
    [Fact]
    public void Gateway_forwarding_remaps_reply_subject_with_gr_prefix_and_restores_on_return()
    {
        const string originalReply = "_INBOX.123";
        const string clusterId = "CLUSTER-A";

        var mapped = ReplyMapper.ToGatewayReply(originalReply, clusterId);
        mapped.ShouldStartWith("_GR_.");
        mapped.ShouldContain(clusterId);

        ReplyMapper.TryRestoreGatewayReply(mapped, out var restored).ShouldBeTrue();
        restored.ShouldBe(originalReply);
    }
}