#24 simple sns: 포스트 삭제 테스트코드

simple_sns/src/main/java/com/example/sns/service/PostService.java

@@ -63,4 +63,31 @@ public class PostService {
         return Post.fromEntity(postEntityRepository.saveAndFlush(postEntity));
     }
 
+    @Transactional
+    public void delete(String username, Integer postId) {
+        UserEntity userEntity = userEntityRepository.findByUsername(username)
+                .orElseThrow(
+                        () -> new SnsApplicationException(
+                                USER_NOT_FOUND,
+                                String.format("%s not founded", username)
+                        )
+                );
+
+        PostEntity postEntity = postEntityRepository.findById(postId)
+                .orElseThrow(
+                        () -> new SnsApplicationException(
+                                POST_NOT_FOUND,
+                                String.format("%s not founded", postId)
+                        )
+                );
+
+        if (postEntity.getUser() != userEntity) {
+            throw new SnsApplicationException(
+                    INVALID_PERMISSION,
+                    String.format("%s has no permission with %s", username, postId)
+            );
+        }
+
+        postEntityRepository.delete(postEntity);
+    }
 }

simple_sns/src/test/java/com/example/sns/controller/PostControllerTest.java

@@ -22,8 +22,7 @@ import static org.mockito.ArgumentMatchers.any;
 import static org.mockito.ArgumentMatchers.eq;
 import static org.mockito.Mockito.doThrow;
 import static org.mockito.Mockito.when;
-import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.post;
-import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.put;
+import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.*;
 import static org.springframework.test.web.servlet.result.MockMvcResultHandlers.print;
 import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.status;
 
@@ -132,4 +131,50 @@ public class PostControllerTest {
                 ).andDo(print())
                 .andExpect(status().isNotFound());
     }
+
+    @Test
+    @WithMockUser
+    void 포스트삭제() throws Exception {
+
+        mockMvc.perform(delete("/api/v1/posts/1")
+                        .contentType(MediaType.APPLICATION_JSON)
+                ).andDo(print())
+                .andExpect(status().isOk());
+    }
+
+    @Test
+    @WithAnonymousUser
+    void 포스트삭제시_로그인하지_않은경우() throws Exception {
+
+        mockMvc.perform(delete("/api/v1/posts/1")
+                        .contentType(MediaType.APPLICATION_JSON)
+                ).andDo(print())
+                .andExpect(status().isUnauthorized());
+    }
+
+    @Test
+    @WithMockUser
+    void 포스트삭제시_작성자와_삭제요청자가_다를경우() throws Exception {
+
+        doThrow(new SnsApplicationException(ErrorCode.INVALID_PERMISSION))
+                .when(postService).delete(any(), any());
+
+        mockMvc.perform(delete("/api/v1/posts/1")
+                        .contentType(MediaType.APPLICATION_JSON)
+                ).andDo(print())
+                .andExpect(status().isUnauthorized());
+    }
+
+    @Test
+    @WithMockUser
+    void 포스트삭제시_삭제하려는_포스트가_존재하지_않을경우() throws Exception {
+
+        doThrow(new SnsApplicationException(ErrorCode.POST_NOT_FOUND))
+                .when(postService).delete(any(), any());
+
+        mockMvc.perform(delete("/api/v1/posts/1")
+                        .contentType(MediaType.APPLICATION_JSON)
+                ).andDo(print())
+                .andExpect(status().isNotFound());
+    }
 }

simple_sns/src/test/java/com/example/sns/service/PostServiceTest.java

@@ -116,4 +116,52 @@ public class PostServiceTest {
         assertEquals(ErrorCode.INVALID_PERMISSION, e.getErrorCode());
     }
 
+    @Test
+    void 포스트삭제가_성공한경우() {
+        String username = "username";
+        Integer postId = 1;
+
+        PostEntity postEntity = PostEntityFixture.get(username, postId, 1);
+        UserEntity userEntity = postEntity.getUser();
+
+        when(userEntityRepository.findByUsername(username)).thenReturn(Optional.of(userEntity));
+        when(postEntityRepository.findById(postId)).thenReturn(Optional.of(postEntity));
+
+        assertDoesNotThrow(() -> postService.delete(username, 1));
+    }
+
+    @Test
+    void 포스트삭제시_포스트가_존재하지않는_경우() {
+        String username = "username";
+        Integer postId = 1;
+
+        PostEntity postEntity = PostEntityFixture.get(username, postId, 1);
+        UserEntity userEntity = postEntity.getUser();
+
+        when(userEntityRepository.findByUsername(username)).thenReturn(Optional.of(userEntity));
+        when(postEntityRepository.findById(postId)).thenReturn(Optional.empty());
+
+        SnsApplicationException e =
+                assertThrows(SnsApplicationException.class, () -> postService.delete(username, 1));
+
+        assertEquals(ErrorCode.POST_NOT_FOUND, e.getErrorCode());
+    }
+
+    @Test
+    void 포스트삭제시_권한이_없는_경우() {
+        String username = "username";
+        Integer postId = 1;
+
+        PostEntity postEntity = PostEntityFixture.get(username, postId, 1);
+        UserEntity writer = UserEntityFixture.get("username1", "password", 2);
+
+        when(userEntityRepository.findByUsername(username)).thenReturn(Optional.of(writer));
+        when(postEntityRepository.findById(postId)).thenReturn(Optional.of(postEntity));
+
+        SnsApplicationException e =
+                assertThrows(SnsApplicationException.class, () -> postService.delete(username, 1));
+
+        assertEquals(ErrorCode.INVALID_PERMISSION, e.getErrorCode());
+    }
+
 }