优化目录结构

backend/src/test/java/com/openisle/service/CommentServiceTest.java

@@ -0,0 +1,37 @@
+package com.openisle.service;
+
+import com.openisle.repository.CommentRepository;
+import com.openisle.repository.PostRepository;
+import com.openisle.repository.UserRepository;
+import com.openisle.repository.ReactionRepository;
+import com.openisle.repository.CommentSubscriptionRepository;
+import com.openisle.repository.NotificationRepository;
+import com.openisle.exception.RateLimitException;
+import org.junit.jupiter.api.Test;
+
+
+import static org.junit.jupiter.api.Assertions.*;
+import static org.mockito.Mockito.*;
+
+class CommentServiceTest {
+    @Test
+    void addCommentRespectsRateLimit() {
+        CommentRepository commentRepo = mock(CommentRepository.class);
+        PostRepository postRepo = mock(PostRepository.class);
+        UserRepository userRepo = mock(UserRepository.class);
+        NotificationService notifService = mock(NotificationService.class);
+        SubscriptionService subService = mock(SubscriptionService.class);
+        ReactionRepository reactionRepo = mock(ReactionRepository.class);
+        CommentSubscriptionRepository subRepo = mock(CommentSubscriptionRepository.class);
+        NotificationRepository nRepo = mock(NotificationRepository.class);
+        ImageUploader imageUploader = mock(ImageUploader.class);
+
+        CommentService service = new CommentService(commentRepo, postRepo, userRepo,
+                notifService, subService, reactionRepo, subRepo, nRepo, imageUploader);
+
+        when(commentRepo.countByAuthorAfter(eq("alice"), any())).thenReturn(3L);
+
+        assertThrows(RateLimitException.class,
+                () -> service.addComment("alice", 1L, "hi"));
+    }
+}