From c58c702ba1fb80da9b24c4524b1d895d090a88c0 Mon Sep 17 00:00:00 2001
From: shmuelgutman <sh.gutman83@gmail.com>
Date: Wed, 19 Feb 2020 03:55:52 +0200
Subject: [PATCH] Create new TurnContext using function so that derived classes
 can override the default TurnContext (#1513)

Like happens in the regular adapter, use helper function to create new instance of the TurnContext so  so that derived classes can override the default TurnContext

Co-authored-by: Chris Mullins <cleemullins@users.noreply.github.com>
Co-authored-by: Steven Ickman <stevenic@microsoft.com>
---
 libraries/botbuilder-core/src/testAdapter.ts | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

diff --git a/libraries/botbuilder-core/src/testAdapter.ts b/libraries/botbuilder-core/src/testAdapter.ts
index b16754220e..010144b36e 100644
--- a/libraries/botbuilder-core/src/testAdapter.ts
+++ b/libraries/botbuilder-core/src/testAdapter.ts
@@ -185,11 +185,22 @@ export class TestAdapter extends BotAdapter implements IUserTokenProvider {
         if (!request.id) { request.id = (this.nextId++).toString(); }
 
         // Create context object and run middleware
-        const context: TurnContext = new TurnContext(this, request);
+        const context: TurnContext = this.createContext(request);
 
         return this.runMiddleware(context, this.logic);
     }
 
+     /**
+     * Creates a turn context.
+     *
+     * @param request An incoming request body.
+     *
+     * @remarks
+     * Override this in a derived class to modify how the adapter creates a turn context.
+     */
+    protected createContext(request: Partial<Activity>): TurnContext {
+        return new TurnContext(this, request);
+    }
     /**
      * Sends something to the bot. This returns a new `TestFlow` instance which can be used to add
      * additional steps for inspecting the bots reply and then sending additional activities.