Introduce notification hub pool

test/Core.Test/NotificationHub/NotificationHubPushRegistrationServiceTests.cs

@@ -0,0 +1,44 @@
+using Bit.Core.NotificationHub;
+using Bit.Core.Repositories;
+using Bit.Core.Settings;
+using Microsoft.Extensions.Logging;
+using NSubstitute;
+using Xunit;
+
+namespace Bit.Core.Test.NotificationHub;
+
+public class NotificationHubPushRegistrationServiceTests
+{
+    private readonly NotificationHubPushRegistrationService _sut;
+
+    private readonly IInstallationDeviceRepository _installationDeviceRepository;
+    private readonly IServiceProvider _serviceProvider;
+    private readonly ILogger<NotificationHubPushRegistrationService> _logger;
+    private readonly GlobalSettings _globalSettings;
+    private readonly INotificationHubPool _notificationHubPool;
+
+    public NotificationHubPushRegistrationServiceTests()
+    {
+        _installationDeviceRepository = Substitute.For<IInstallationDeviceRepository>();
+        _serviceProvider = Substitute.For<IServiceProvider>();
+        _logger = Substitute.For<ILogger<NotificationHubPushRegistrationService>>();
+        _globalSettings = new GlobalSettings();
+        _notificationHubPool = Substitute.For<INotificationHubPool>();
+
+        _sut = new NotificationHubPushRegistrationService(
+            _installationDeviceRepository,
+            _globalSettings,
+            _notificationHubPool,
+            _serviceProvider,
+            _logger
+        );
+    }
+
+    // Remove this test when we add actual tests. It only proves that
+    // we've properly constructed the system under test.
+    [Fact(Skip = "Needs additional work")]
+    public void ServiceExists()
+    {
+        Assert.NotNull(_sut);
+    }
+}