Implicit construction of ChatId from User

Author: wiz0u

src/Telegram.Bot/TelegramBotClient.cs

@@ -38,11 +38,6 @@ public TimeSpan Timeout
         set => _httpClient.Timeout = value;
     }
 
-    #region For testing purposes
-    internal string BaseRequestUrl => _options.BaseRequestUrl;
-    internal string BaseFileUrl => _options.BaseFileUrl;
-    #endregion
-
 #pragma warning disable CS1591
     public delegate Task OnUpdateHandler(Update update);
     public delegate Task OnMessageHandler(Message message, UpdateType type);

src/Telegram.Bot/Types/ChatId.cs

@@ -65,6 +65,10 @@ public ChatId(string username)
     [return: NotNullIfNotNull(nameof(chatFullInfo))]
     public static implicit operator ChatId?(ChatFullInfo? chatFullInfo) => chatFullInfo is null ? null : new(chatFullInfo.Id);
 
+    /// <summary>Convert a <see cref="User"/> object to a <see cref="ChatId"/></summary>
+    [return: NotNullIfNotNull(nameof(user))]
+    public static implicit operator ChatId?(User? user) => user is null ? null : new(user.Id);
+
     /// <summary>Compares two ChatId objects</summary>
     public static bool operator ==(ChatId? obj1, ChatId? obj2)
     {