coverage

service/src/main/java/greencity/service/EventServiceImpl.java

@@ -760,6 +760,7 @@ public void dislike(UserVO userVO, Long eventId) {
         removeLikeIfExists(event, userVO, getEventAuthor(event));
 
         if (removeDislikeIfExists(event, userVO)) {
+            eventRepo.save(event);
             return;
         }
 

service/src/test/java/greencity/service/EventServiceImplTest.java

@@ -1278,6 +1278,23 @@ void dislikeTest() {
         assertEquals(1L, event.getUsersDislikedEvents().size());
     }
 
+    @Test
+    void testDislikeIfWasAlreadyPlaced(){
+        UserVO userVO = getUserVO();
+        User user = getUser();
+        Event event = getEvent();
+        Set<User> usersDisliked = new HashSet<>();
+        usersDisliked.add(user);
+        event.setUsersDislikedEvents(usersDisliked);
+
+        when(eventRepo.findById(anyLong())).thenReturn(Optional.of(event));
+        when(userRepo.findById(user.getId())).thenReturn(Optional.of(user));
+        eventService.dislike(userVO, event.getId());
+
+        verify(eventRepo).save(event);
+        assertEquals(0L, event.getUsersDislikedEvents().size());
+    }
+
     @Test
     void givenEventLikedByUser_whenDislikedByUser_shouldRemoveLikeAndAddDislike() {
         UserVO userVO = getUserVO();