Category: Java

Unit Testing with Spring Boot

Create a new controller and hello service import org.springframework.web.bind.annotation.GetMapping; import org.springframework.web.bind.annotation.RestController; @RestController public class HelloController { @GetMapping(“/hello”) public String helloWorld(){ return “Hello World”; } } JUnit 4 Code @RunWith(SpringRunner.class) @WebMvcTest(HelloWorldController.class) JUnit 5 Code @WebMvcTest(HelloWorldController.class)   Testing Simple Hello Controller import org.junit.jupiter.api.Test; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.boot.test.autoconfigure.web.servlet.WebMvcTest; import org.springframework.http.MediaType; import org.springframework.test.web.servlet.MockMvc; import org.springframework.test.web.servlet.MvcResult; import org.springframework.test.web.servlet.RequestBuilder; import org.springframework.test.web.servlet.request.MockMvcRequestBuilders; import static org.junit.jupiter.api.Assertions.*; @WebMvcTest(HelloController.class) class HelloControllerTest { @Autowired private MockMvc mockMvc; @Test void helloWorld() throws Exception { // request GET /hello and application/json RequestBuilder requestBuilder = MockMvcRequestBuilders.get(“/hello”) .accept(MediaType.APPLICATION_JSON); MvcResult result=mockMvc.perform(requestBuilder).andReturn(); //verify controller assertEquals(“Hello World”,result.getResponse().getContentAsString()); } } Controller with status and…