OpenIsle/src/test/java/com/openisle/service/NotificationServiceTest.java

package com.openisle.service;

import com.openisle.model.Notification;
import com.openisle.model.User;
import com.openisle.repository.NotificationRepository;
import com.openisle.repository.UserRepository;
import org.junit.jupiter.api.Test;
import org.mockito.Mockito;

import java.util.List;
import java.util.Optional;

import static org.junit.jupiter.api.Assertions.*;
import static org.mockito.Mockito.*;

class NotificationServiceTest {

    @Test
    void markReadUpdatesOnlyOwnedNotifications() {
        NotificationRepository nRepo = mock(NotificationRepository.class);
        UserRepository uRepo = mock(UserRepository.class);
        NotificationService service = new NotificationService(nRepo, uRepo);

        User user = new User();
        user.setId(1L);
        user.setUsername("alice");
        when(uRepo.findByUsername("alice")).thenReturn(Optional.of(user));

        Notification n1 = new Notification();
        n1.setId(10L);
        n1.setUser(user);
        Notification n2 = new Notification();
        n2.setId(11L);
        n2.setUser(user);
        when(nRepo.findAllById(List.of(10L, 11L))).thenReturn(List.of(n1, n2));

        service.markRead("alice", List.of(10L, 11L));

        assertTrue(n1.isRead());
        assertTrue(n2.isRead());
        verify(nRepo).saveAll(List.of(n1, n2));
    }

    @Test
    void listNotificationsWithoutFilter() {
        NotificationRepository nRepo = mock(NotificationRepository.class);
        UserRepository uRepo = mock(UserRepository.class);
        NotificationService service = new NotificationService(nRepo, uRepo);

        User user = new User();
        user.setId(2L);
        user.setUsername("bob");
        when(uRepo.findByUsername("bob")).thenReturn(Optional.of(user));

        Notification n = new Notification();
        when(nRepo.findByUserOrderByCreatedAtDesc(user)).thenReturn(List.of(n));

        List<Notification> list = service.listNotifications("bob", null);

        assertEquals(1, list.size());
        verify(nRepo).findByUserOrderByCreatedAtDesc(user);
    }
}