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[英]Trying to mock RestTemplate with MockRestServiceServer but body is always null
[英](Resolvido) Mock Mvc is always null
我試圖實施 controller 測試以保證它會返回 http 200 代碼,但是在嘗試運行測試時我收到了 NullPointerException 異常。
調試代碼發現MockMvc是null。
我已經嘗試添加注釋,如@SpringBootTest、@AutoConfigureMockMvc、@WebMvcTest、@ExtendWith,而 MockMvc 仍然是 null,現在我不知道還能做什么來解決這個問題
注意:我正在了解這些測試內容,所以如果代碼中有問題,請告訴我,我將不勝感激
這是我的測試代碼:
`
@ExtendWith(MockitoExtension.class)
@WebMvcTest(BookController.class)
@AutoConfigureMockMvc
@SpringBootTest
public class TestControlBook {
@Autowired
private MockMvc mockMvc;
@Test
public void testListBooks() throws Exception{
Response ResultActions = mockMvc.perform(MockMvcRequestBuilders.get("/api/books/list"));
response.andExpect(MockMvcResultMatchers.status().isOk());
}
}
這是我的 controller 代碼:
`@RestController
@RequestMapping("/api/books")
public class BookController {
private BookService bookService;
public BookController(BookService bookService) {
this.bookService = bookService;
}
@GetMapping("/list")
private ResponseEntity<Object> listBooks(){
try {
return ResponseEntity.status(HttpStatus.OK).body(bookService.listBooks());
}
catch (Exception e){
return ResponseEntity.status(HttpStatus.INTERNAL_SERVER_ERROR).body("An error occurred while trying to list the books, please try again later");
}
}
}
這是我的 pom.xml:
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.1.0.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.tdd</groupId>
<artifactId>exemplo</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>TDD Exemplo</name>
<description>Demo project for Spring Boot</description>
<properties>
<java.version>11</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
<version>3.0.0</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-security</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
<scope>runtime</scope>
<optional>true</optional>
</dependency>
<dependency>
<groupId>com.mysql</groupId>
<artifactId>mysql-connector-j</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.security</groupId>
<artifactId>spring-security-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.junit.jupiter</groupId>
<artifactId>junit-jupiter-engine</artifactId>
<version>5.2.0</version>
</dependency>
<dependency>
<groupId>org.mockito</groupId>
<artifactId>mockito-junit-jupiter</artifactId>
<version>4.6.1</version>
<scope>test</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>`
```
我設法解決了這個問題,發生的事情是注釋發生沖突,導致無法分配 MockMvc。 此外,我更改了一些內容,使代碼更具可讀性和更好。
現在的代碼是這樣的:
@WebMvcTest(LivroController.class)
@AutoConfigureMockMvc
public class LivroControlerTeste {
@Autowired
private MockMvc mockMvc;
@MockBean
private LivroService livroService;
@Test
public void testarListarLivros() throws Exception{
MvcResult mvcResult = mockMvc.perform(get("/api/livros/listar"))
.andExpect(status().isOk()).andReturn();
}
}
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