adds relevant tests

1 files changed, 3 insertions, 3 deletions

diff --git a/lib/microsoft_teams/activity.rb b/lib/microsoft_teams/activity.rb
index e25ce262cbf..d2c420efdaf 100644
--- a/lib/microsoft_teams/activity.rb
+++ b/lib/microsoft_teams/activity.rb
@@ -1,19 +1,19 @@
 module MicrosoftTeams
   class Activity
-    def initialize(title, subtitle, text, image)
+    def initialize(title:, subtitle:, text:, image:)
       @title = title
       @subtitle = subtitle
       @text = text
       @image = image
     end
 
-    def to_json
+    def prepare
       {
         'activityTitle' => @title,
         'activitySubtitle' => @subtitle,
         'activityText' => @text,
         'activityImage' => @image
-      }.to_json
+      }
     end
   end
 end