Merge pull request #17423 from MarcusNoble/master

Added ping method to MySQL IConnection

types/mysql/index.d.ts

@@ -58,6 +58,8 @@ interface IConnection {
     end(callback: (err: IError, ...args: any[]) => void): void;
     end(options: any, callback: (err: IError, ...args: any[]) => void): void;
 
+    ping(callback: (err: IError) => void): void;
+
     destroy(): void;
 
     pause(): void;

types/mysql/mysql-tests.ts

@@ -148,6 +148,11 @@ connection.connect(function (err) {
     console.log('connected as id ' + connection.threadId);
 });
 
+connection.ping(function (err) {
+    if (err) throw err;
+    console.log('Ping was successful');
+})
+
 /// Pools
 
 var poolConfig = {