WebAPISignalRChat/Backend/Tests/ConnectionHubTests.cs

using Diligent.WebAPI.Host.Hubs;
using Microsoft.AspNetCore.SignalR;
using Moq;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Tests
{
    [TestFixture]
    public class ConnectionHubTests
    {
        private Mock<IHubCallerClients> _mockClients;
        private Mock<IClientProxy> _mockClientProxy;
        private ConnectionHub _connectionHub;

        [SetUp]
        public void SetUp()
        {
            _mockClients = new Mock<IHubCallerClients>();
            _mockClientProxy = new Mock<IClientProxy>();
            _connectionHub = new ConnectionHub()
            {
                Clients = _mockClients.Object
            };
        }

        [Test]
        public async Task SignalR_OnConnect_ShouldReturnMessage()
        {
            // Arrange
            _mockClients.Setup(clients => clients.Others).Returns(_mockClientProxy.Object);

            // Act
            await _connectionHub.Unsubscribe(new SenderObj { ConnId = "aaa", Id = "1" });

            // Assert
            _mockClients.Verify(clients => clients.Others, Times.Once);
            _mockClientProxy.Verify(clientProxy =>
                clientProxy.SendCoreAsync("Notify", It.Is<object[]>(o => o != null && o.Length == 1 && ((StatusMessage)o[0]).Id == "1" && ((StatusMessage)o[0]).M == "unsubscription"),
                    default(CancellationToken)),
                Times.Once);
        }
    }
}