#14 simple blog : get post list api

simpleblog/src/main/java/com/example/simpleblog/controller/PostController.java

@@ -1,6 +1,5 @@
 package com.example.simpleblog.controller;
 
-import com.example.simpleblog.domain.Post;
 import com.example.simpleblog.request.PostCreate;
 import com.example.simpleblog.response.PostResponse;
 import com.example.simpleblog.service.PostService;
@@ -9,6 +8,7 @@ import lombok.extern.slf4j.Slf4j;
 import org.springframework.web.bind.annotation.*;
 
 import javax.validation.Valid;
+import java.util.List;
 
 @Slf4j
 @RestController
@@ -26,4 +26,9 @@ public class PostController {
     public PostResponse getPost(@PathVariable(name = "postId") Long id) {
         return postService.getPost(id);
     }
+
+    @GetMapping("/posts")
+    public List<PostResponse> getPostList() {
+        return postService.getPostList();
+    }
 }

simpleblog/src/main/java/com/example/simpleblog/response/PostResponse.java

@@ -1,5 +1,6 @@
 package com.example.simpleblog.response;
 
+import com.example.simpleblog.domain.Post;
 import lombok.Builder;
 import lombok.Getter;
 
@@ -13,8 +14,13 @@ public class PostResponse {
     private final String title;
     private final String content;
 
-    @Builder
+    public PostResponse(Post post) {
+        this.id = post.getId();
+        this.title = post.getTitle();
+        this.content = post.getContent();
+    }
 
+    @Builder
     public PostResponse(Long id, String title, String content) {
         this.id = id;
         this.title = title.substring(0 ,Math.min(title.length(), 10));

simpleblog/src/main/java/com/example/simpleblog/service/PostService.java

@@ -8,6 +8,9 @@ import lombok.RequiredArgsConstructor;
 import lombok.extern.slf4j.Slf4j;
 import org.springframework.stereotype.Service;
 
+import java.util.List;
+import java.util.stream.Collectors;
+
 @Slf4j
 @Service
 @RequiredArgsConstructor
@@ -35,4 +38,10 @@ public class PostService {
                 .content(postEntity.getContent())
                 .build();
     }
+
+    public List<PostResponse> getPostList() {
+        return postRepository.findAll().stream()
+                .map(PostResponse::new)
+                .collect(Collectors.toList());
+    }
 }

simpleblog/src/main/resources/application.yml

@@ -1 +1,11 @@
+spring:
+  h2:
+    console:
+      enabled: true
+      path: /h2-console
 
+  datasource:
+    url: jdbc:h2:mem:simpleblog
+    username: sa
+    password:
+    driver-class-name: org.h2.Driver

simpleblog/src/test/java/com/example/simpleblog/controller/PostControllerTest.java

@@ -12,6 +12,7 @@ import org.springframework.boot.test.autoconfigure.web.servlet.AutoConfigureMock
 import org.springframework.boot.test.context.SpringBootTest;
 import org.springframework.test.web.servlet.MockMvc;
 
+import static org.hamcrest.Matchers.is;
 import static org.junit.jupiter.api.Assertions.assertEquals;
 import static org.springframework.http.MediaType.APPLICATION_JSON;
 import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.get;
@@ -134,4 +135,37 @@ class PostControllerTest {
         ;
 
     }
+
+    @Test
+    @DisplayName("글 리스트 조회")
+    void get_post_list_success() throws Exception {
+        // given
+        Post post1 = postRepository.save(Post.builder()
+                .title("제목1")
+                .content("내용1")
+                .build());
+
+        Post post2 = postRepository.save(Post.builder()
+                .title("제목2")
+                .content("내용2")
+                .build());
+
+        // json 응답에서 title 값 길이를 최대 10글자
+
+        // expected
+        mockMvc.perform(get("/posts")
+                        .contentType(APPLICATION_JSON)
+                )
+                .andExpect(status().isOk())
+                .andExpect(jsonPath("$.length()", is(2)))
+                .andExpect(jsonPath("$[0].id").value(post1.getId()))
+                .andExpect(jsonPath("$[0].title").value("제목1"))
+                .andExpect(jsonPath("$[0].content").value("내용1"))
+                .andExpect(jsonPath("$[1].id").value(post2.getId()))
+                .andExpect(jsonPath("$[1].title").value("제목2"))
+                .andExpect(jsonPath("$[1].content").value("내용2"))
+                .andDo(print())
+        ;
+
+    }
 }

simpleblog/src/test/java/com/example/simpleblog/service/PostServiceTest.java

@@ -10,6 +10,8 @@ import org.junit.jupiter.api.Test;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.boot.test.context.SpringBootTest;
 
+import java.util.List;
+
 import static org.junit.jupiter.api.Assertions.*;
 
 @SpringBootTest
@@ -50,21 +52,41 @@ class PostServiceTest {
     @DisplayName("postId 로 글 조회")
     void get_post_by_id_test() {
         // given
-        Post post = Post.builder()
+        Post post = postRepository.save(Post.builder()
                 .title("글 제목입니다.")
                 .content("글 내용입니다.")
-                .build();
-
-        postRepository.save(post);
-
-        Long postId = 1L;
+                .build());
 
         // when
-        PostResponse response = postService.getPost(postId);
+        PostResponse response = postService.getPost(post.getId());
 
         // then
         assertNotNull(post);
         assertEquals("글 제목입니다.", response.getTitle());
         assertEquals("글 내용입니다.", response.getContent());
     }
+
+    @Test
+    @DisplayName("글 리스트 조회")
+    void get_posts_list_test() {
+        // given
+        postRepository.saveAll(List.of(
+                Post.builder()
+                        .title("글 1제목입니다.")
+                        .content("글 1내용입니다.")
+                        .build(),
+                Post.builder()
+                        .title("글 2제목입니다.")
+                        .content("글 2내용입니다.")
+                        .build()
+        ));
+
+        Long postId = 1L;
+
+        // when
+        List<PostResponse> posts = postService.getPostList();
+
+        // then
+        assertEquals(2L, posts.size());
+    }
 }