Friend list to JSON method added

src/Server/src/main/java/greenify/server/data/model/User.java

@@ -143,6 +143,17 @@ public class User {
                 + this.password + ")";
     }
 
+    public String friendsToString(){
+        String result = "friends=[";
+        for(User u : friends){
+            result += "{name=" + u.getName() + ", footprint=" + u.getFootPrint() + "}, ";
+        }
+        if(result.endsWith(", ")){
+            return result.substring(0, result.lastIndexOf(",")) + "]";
+        }
+        return result + "]";
+    }
+
     @Override
     public boolean equals(Object other) {
         if (other instanceof User) {

src/Server/src/test/java/greenify/server/data/model/UserTest.java

@@ -96,7 +96,6 @@ public class UserTest {
         User first = new User(1L, "greenify", "password");
         User second = new User(1L, "merel", "password");
         assertEquals(first.getFriends(), second.getFriends());
-        System.out.print(second);
         first.addFriend(second);
         ArrayList<User> test = new ArrayList<User>();
         test.add(second);
@@ -109,6 +108,16 @@ public class UserTest {
         assertEquals(test.getFriends(), new ArrayList<User>());
         assertThrows(ApplicationException.class, () -> {
             test.addFriend(test);
-        });    }
+        });
+    }
+
+
+    @Test
+    public void friendsToStringTest(){
+        User first = new User(1L, "greenify", "password");
+        User second = new User(1L, "merel", "password");
+        first.addFriend(second);
+        assertEquals(first.friendsToString(), "friends=[{name=merel, footprint=0.0}]");
+    }
 }