using Opc.Ua.Server;
using Shouldly;
using Xunit;

namespace ZB.MOM.WW.OtOpcUa.OpcUaServer.IntegrationTests;

/// <summary>
///     Gitea #870: the running server's monitored-item queue factory is <see cref="RingEventQueueFactory"/> (every event
///     item's queue is a <see cref="RingEventMonitoredItemQueue"/>; the SDK's <see cref="EventQueueHandler"/> always asks
///     the server's factory), and data-change queues are still the SDK's own.
/// </summary>
// Shares a collection with the other user of OtOpcUaSdkServer.RingEventQueues (a process-wide switch the perf
// harness flips), so the wiring assertion never observes it switched off (#870 review).
[Collection(RingEventQueueSwitchCollection.Name)]
public sealed class RingEventQueueWiringTests
{
    [Fact]
    public async Task The_server_creates_ring_event_queues_and_sdk_data_change_queues()
    {
        var ct = TestContext.Current.CancellationToken;
        await using var rig = await ServerEventRig.StartAsync("RingQueue870", encrypted: false, ct);

        var factory = rig.Server.CurrentInstance.MonitoredItemQueueFactory.ShouldBeOfType<RingEventQueueFactory>();
        factory.SupportsDurableQueues.ShouldBeFalse();
        factory.CreateEventQueue(false, 1).ShouldBeOfType<RingEventMonitoredItemQueue>();
        factory.CreateDataChangeQueue(false, 2).ShouldBeOfType<DataChangeMonitoredItemQueue>();
    }
}

/// <summary>Serialises the tests that read or flip <c>OtOpcUaSdkServer.RingEventQueues</c>.</summary>
[CollectionDefinition(Name)]
public sealed class RingEventQueueSwitchCollection
{
    /// <summary>The collection name.</summary>
    public const string Name = "RingEventQueueSwitch";
}