Added test around setting email

Author: Workshop2

src/SlackConnector.Tests.Unit/SlackConnectionTests/InboundMessageTests/UserJoinedTests.cs

@@ -34,7 +34,11 @@ protected override void Given()
                     Name = "my-name",
                     TimeZoneOffset = -231,
                     IsBot = true,
-                    Presence = "active"
+                    Presence = "active",
+                    Profile = new Profile
+                    {
+                        Email = "[email protected]"
+                    }
                 }
             };
 
@@ -44,7 +48,8 @@ protected override void Given()
                 Name = "my-name",
                 TimeZoneOffset = -231,
                 IsBot = true,
-                Online = true
+                Online = true,
+                Email = "[email protected]"
             };
         }