Add test for leaderboard JSON

src/Server/src/main/java/greenify/server/service/UserService.java

@@ -74,6 +74,16 @@ public class UserService {
         user.addFriend(add);
     }
 
+    /**
+     * Returns the friendlist of the user in JSON.
+     * @param name the username of the user
+     * @return a userDTO of the logged in user
+     */
+    public String getLeaderboard(String name) {
+        User user = userRepository.findByName(name);
+        return user.friendsToString();
+    }
+
     /**
      * The method sets input value.
      * @param name of the user

src/Server/src/test/java/greenify/server/service/UserServiceTest.java

@@ -174,4 +174,13 @@ public class UserServiceTest {
         assertEquals(alex.getFriends(), test);
     }
 
+    @Test
+    public void leaderboardTest() {
+        User alex = userRepository.findByName("alex");
+        User lola = userRepository.findByName("lola");
+        userService.addFriend("alex", "lola");
+        assertEquals(userService.getLeaderboard("alex"), "friends=[{name=lola, footprint=0.0}]");
+
+    }
+
 }