feat(tests): Changes to fix tests and make sure we can run them successfully. (#12819)

Author: azabbasi

sdk/iot/Azure.Iot.Hub.Service/api/Azure.Iot.Hub.Service.netstandard2.0.cs

@@ -54,12 +54,12 @@ public IoTHubServiceClient(string connectionString) { }
         public IoTHubServiceClient(string connectionString, Azure.Iot.Hub.Service.IoTHubServiceClientOptions options) { }
         public IoTHubServiceClient(System.Uri endpoint, Azure.Core.TokenCredential credential) { }
         public IoTHubServiceClient(System.Uri endpoint, Azure.Core.TokenCredential credential, Azure.Iot.Hub.Service.IoTHubServiceClientOptions options) { }
-        public Azure.Iot.Hub.Service.DevicesClient Devices { get { throw null; } }
-        public Azure.Iot.Hub.Service.FilesClient Files { get { throw null; } }
-        public Azure.Iot.Hub.Service.JobsClient Jobs { get { throw null; } }
-        public Azure.Iot.Hub.Service.CloudToDeviceMessagesClient Messages { get { throw null; } }
-        public Azure.Iot.Hub.Service.ModulesClient Modules { get { throw null; } }
-        public Azure.Iot.Hub.Service.StatisticsClient Statistics { get { throw null; } }
+        public virtual Azure.Iot.Hub.Service.DevicesClient Devices { get { throw null; } }
+        public virtual Azure.Iot.Hub.Service.FilesClient Files { get { throw null; } }
+        public virtual Azure.Iot.Hub.Service.JobsClient Jobs { get { throw null; } }
+        public virtual Azure.Iot.Hub.Service.CloudToDeviceMessagesClient Messages { get { throw null; } }
+        public virtual Azure.Iot.Hub.Service.ModulesClient Modules { get { throw null; } }
+        public virtual Azure.Iot.Hub.Service.StatisticsClient Statistics { get { throw null; } }
     }
     public partial class IoTHubServiceClientOptions : Azure.Core.ClientOptions
     {

sdk/iot/Azure.Iot.Hub.Service/src/IoTHubServiceClient.cs

@@ -23,32 +23,32 @@ public class IoTHubServiceClient
         /// <summary>
         /// place holder for Devices
         /// </summary>
-        public DevicesClient Devices { get; private set; }
+        public virtual DevicesClient Devices { get; private set; }
 
         /// <summary>
         /// place holder for Modules
         /// </summary>
-        public ModulesClient Modules { get; private set; }
+        public virtual ModulesClient Modules { get; private set; }
 
         /// <summary>
         /// place holder for Statistics
         /// </summary>
-        public StatisticsClient Statistics { get; private set; }
+        public virtual StatisticsClient Statistics { get; private set; }
 
         /// <summary>
         /// place holder for Messages
         /// </summary>
-        public CloudToDeviceMessagesClient Messages { get; private set; }
+        public virtual CloudToDeviceMessagesClient Messages { get; private set; }
 
         /// <summary>
         /// place holder for Files
         /// </summary>
-        public FilesClient Files { get; private set; }
+        public virtual FilesClient Files { get; private set; }
 
         /// <summary>
         /// place holder for Jobs
         /// </summary>
-        public JobsClient Jobs { get; private set; }
+        public virtual JobsClient Jobs { get; private set; }
 
         /// <summary>
         /// Initializes a new instance of the <see cref="IoTHubServiceClient"/> class.