Updated an example project

Examples/Deployf.Botf.MediaExample/Program.cs

@@ -4,12 +4,115 @@
 
 class MediaController : BotController
 {
+    /*
+     * There is a picture in the 1st message, but not in the 2nd.
+     * What should happen:
+     * The 1st will be deleted and the second will be sent
+     */
+
+    #region 1st scenario
+
     [Action("/start")]
     void Start()
     {
         // Add the photo to message
         Photo("https://avatars.githubusercontent.com/u/59260433");
         Push("Hello from deploy-f");
+        Button("Got to botf repo", Q(Test1));
+    }
+
+    [Action]
+    void Test1()
+    {
+        Push("Test1");
+        Button("Got to botf repo", "https://github.com/deploy-f/botf");
+    }
+
+    #endregion
+
+
+    /*
+     * There is no picture in the 1st message, but there is in the 2nd.
+     * What should happen:
+     * The 1st will be deleted and the second will be sent
+     */
+
+    #region 2й scenario
+
+    [Action("/start2")]
+    void Start2()
+    {
+        Push("Hello from deploy-f");
+        Button("Got to botf repo", Q(Test2));
+    }
+
+    [Action]
+    void Test2()
+    {
+        // Add the photo to message
+        Photo("https://avatars.githubusercontent.com/u/59260433");
+        Push("Test2");
+        Button("Got to botf repo", "https://github.com/deploy-f/botf");
+    }
+
+    #endregion
+
+
+    /*
+     * There is no picture in the 1st message and there is no picture in the 2nd either.
+     * What should happen:
+     * 1st message update via without deletion
+     */
+
+    #region 3й scenario
+
+    [Action("/start3")]
+    void Start3()
+    {
+        Push("Hello from deploy-f");
+        Button("Got to botf repo", Q(Test3));
+    }
+
+    [Action]
+    void Test3()
+    {
+        Push("Test3");
+        Button("Got to botf repo", "https://github.com/deploy-f/botf");
+    }
+
+    #endregion
+
+
+    /*
+     * In the 1st message there is a picture and in the 2nd there is.
+     * What should happen:
+     * The 1st message will update its text and image without deleting.
+     * If you specify UpdateMessagePolicy to DeleteAndSend, so the 1st message will be deleted
+     * and new message with new picture will be sent  
+     * Note from Telegram: When an inline message is edited, a new file can't be uploaded;
+     * use a previously uploaded file via its file_id or specify a URL.  
+     */
+
+    #region 4й scenario
+
+    [Action("/start4")]
+    void Start4()
+    {
+        // Add the photo to message
+        Photo("https://avatars.githubusercontent.com/u/59260433");
+        Push("Hello from deploy-f");
+        Button("Got to botf repo", Q(Test4));
+    }
+
+    [Action]
+    void Test4()
+    {
+        Context.SetUpdateMsgPolicy(UpdateMessagePolicy.UpdateContent);
+        // Add a new photo to message
+        Photo("https://icons-for-free.com/iconfiles/png/512/csharp+line-1324760527290176528.png");
+        Push("Test4");
         Button("Got to botf repo", "https://github.com/deploy-f/botf");
     }
+
+    #endregion
 }