private async Task InstallationExists_ChecksInstallation() { LoadMockData(); await DeleteAllRegistrationsAndInstallations(); var installationId = Guid.NewGuid().ToString(); var installation = new Installation { InstallationId = installationId, Platform = NotificationPlatform.Apns, PushChannel = _configuration["AppleDeviceToken"] }; await _hubClient.CreateOrUpdateInstallationAsync(installation); await Sleep(TimeSpan.FromSeconds(1)); Assert.True(await _hubClient.InstallationExistsAsync(installationId)); await _hubClient.DeleteInstallationAsync(installationId); await Sleep(TimeSpan.FromSeconds(1)); Assert.False(await _hubClient.InstallationExistsAsync(installationId)); RecordTestResults(); }