Added specs for User 'public_activity' scope

spec/models/user_spec.rb

@@ -351,6 +351,18 @@ describe User do
       end
 
     end
+
+    describe "public activity" do
+      it "returns users whose activity feed is public" do
+        user1 = create(:user)
+        user2 = create(:user, public_activity: false)
+        user3 = create(:user)
+
+        expect(User.public_activity).to include(user1)
+        expect(User.public_activity).not_to include(user2)
+        expect(User.public_activity).to include(user3)
+      end
+    end
   end
 
   describe "self.search" do