完善章节3单元测试

chapter-3-spring-boot-web/src/test/java/demo/springboot/web/BookControllerTest.java

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+package demo.springboot.web;
+
+import com.fasterxml.jackson.databind.ObjectMapper;
+import demo.springboot.WebApplication;
+import demo.springboot.domain.Book;
+import demo.springboot.service.BookService;
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.InjectMocks;
+import org.mockito.Mock;
+import org.mockito.MockitoAnnotations;
+import org.springframework.boot.test.autoconfigure.web.servlet.AutoConfigureMockMvc;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.http.MediaType;
+import org.springframework.test.context.TestPropertySource;
+import org.springframework.test.context.junit4.SpringRunner;
+import org.springframework.test.web.servlet.MockMvc;
+import org.springframework.test.web.servlet.setup.MockMvcBuilders;
+
+import static org.hamcrest.Matchers.*;
+import static org.hamcrest.Matchers.is;
+import static org.mockito.Mockito.*;
+import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.*;
+import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.delete;
+import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.*;
+
+
+@RunWith(SpringRunner.class)
+@SpringBootTest(webEnvironment = SpringBootTest.WebEnvironment.RANDOM_PORT, classes = WebApplication.class)
+@AutoConfigureMockMvc
+@TestPropertySource(locations = "classpath:application.properties")
+public class BookControllerTest {
+
+    private MockMvc mockMvc;
+
+    @Mock
+    private BookService bookService;
+
+    @InjectMocks
+    private BookController bookController;
+
+    @Before
+    public void init() {
+        MockitoAnnotations.initMocks(this);
+        mockMvc = MockMvcBuilders
+                .standaloneSetup(bookController)
+                //.addFilters(new CORSFilter())
+                .build();
+    }
+
+
+    @Test
+    public void getBookList() throws Exception {
+        mockMvc.perform(get("/book")
+                .contentType(MediaType.APPLICATION_JSON))
+                .andExpect(status().isOk())
+                .andExpect(content().contentTypeCompatibleWith(MediaType.APPLICATION_JSON_UTF8))
+                .andExpect(jsonPath("$", hasSize(0)));
+
+    }
+
+
+    @Test
+    public void test_create_book_success() throws Exception {
+
+        Book book = createOneBook();
+
+        when(bookService.insertByBook(book)).thenReturn(book);
+
+        mockMvc.perform(
+                post("/book/create")
+                        .contentType(MediaType.APPLICATION_JSON)
+                        .content(asJsonString(book)))
+
+                .andExpect(status().isCreated())
+                .andExpect(header().string("location", containsString("/book/1")));
+    }
+
+
+    @Test
+    public void test_create_book_fail_404_not_found() throws Exception {
+
+        Book book = new Book(99L, "conflict");
+
+        when(bookService.exists(book)).thenReturn(true);
+
+        mockMvc.perform(
+                post("/book/create")
+                        .contentType(MediaType.APPLICATION_JSON)
+                        .content(asJsonString(book)))
+                .andExpect(status().isConflict());
+    }
+
+    @Test
+    public void test_get_book_success() throws Exception {
+
+        Book book = new Book(1L, "测试获取一本书", "strongant作者", "社区 www.spring4all.com 出版社出版");
+
+        when(bookService.findById(1L)).thenReturn(book);
+
+        mockMvc.perform(get("/book/{id}", 1L))
+                .andExpect(status().isOk())
+                .andExpect(content().contentType(MediaType.APPLICATION_JSON_UTF8_VALUE))
+                .andExpect(jsonPath("$.id", is(1)))
+                .andExpect(jsonPath("$.name", is("测试获取一本书")));
+
+        verify(bookService, times(1)).findById(1L);
+        verifyNoMoreInteractions(bookService);
+    }
+
+    @Test
+    public void test_get_by_id_fail_null_not_found() throws Exception {
+        when(bookService.findById(1L)).thenReturn(null);
+
+        //TODO: 查找不到应该抛出 404 状态码， Demo 待优化
+        mockMvc.perform(get("/book/{id}", 1L))
+                .andExpect(status().isOk())
+                .andExpect(content().string(""));
+
+        verify(bookService, times(1)).findById(1L);
+        verifyNoMoreInteractions(bookService);
+    }
+
+    @Test
+    public void test_update_book_success() throws Exception {
+
+        Book book = createOneBook();
+
+        when(bookService.findById(book.getId())).thenReturn(book);
+        doReturn(book).when(bookService).update(book);
+
+        mockMvc.perform(
+                put("/book/update", book)
+                        .contentType(MediaType.APPLICATION_JSON)
+                        .content(asJsonString(book)))
+                .andExpect(status().isOk());
+    }
+
+    @Test
+    public void test_update_book_fail_not_found() throws Exception {
+        Book book = new Book(999L, "测试书名1");
+
+        when(bookService.findById(book.getId())).thenReturn(null);
+
+        mockMvc.perform(
+                put("/book/update", book)
+                        .contentType(MediaType.APPLICATION_JSON)
+                        .content(asJsonString(book)))
+                .andExpect(status().isOk())
+                .andExpect(content().string(""));
+    }
+
+    // =========================================== Delete Book ============================================
+
+    @Test
+    public void test_delete_book_success() throws Exception {
+
+        Book book = new Book(1L, "这本书会被删除啦");
+
+        when(bookService.findById(book.getId())).thenReturn(book);
+        doReturn(book).when(bookService).delete(book.getId());
+
+        mockMvc.perform(
+                delete("/book/delete/{id}", book.getId())
+        ).andExpect(status().isOk());
+    }
+
+    @Test
+    public void test_delete_book_fail_404_not_found() throws Exception {
+        Book book = new Book(1L, "这本书会被删除啦");
+
+        when(bookService.findById(book.getId())).thenReturn(null);
+
+        mockMvc.perform(
+                delete("/book/delete/{id}", book.getId()))
+                .andExpect(status().isOk());
+    }
+
+
+    public static String asJsonString(final Object obj) {
+        try {
+            final ObjectMapper mapper = new ObjectMapper();
+            return mapper.writeValueAsString(obj);
+        } catch (Exception e) {
+            throw new RuntimeException(e);
+        }
+    }
+
+    private Book createOneBook() {
+        Book book = new Book();
+        book.setId(1L);
+        book.setName("测试书名1");
+        book.setIntroduction("这是一本 www.spring4all.com 社区出版的很不错的一本书籍");
+        book.setWriter("strongant");
+        return book;
+    }
+}

chapter-3-spring-boot-web/src/test/resources/application.properties

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+server.port=9090