1. Add dependencies thế này:

   <code><span><span>&lt;<span>dependency</span>&gt;</span>
       <span>&lt;<span>groupId</span>&gt;</span>io.cucumber<span>&lt;/<span>groupId</span>&gt;</span>
       <span>&lt;<span>artifactId</span>&gt;</span>cucumber-java<span>&lt;/<span>artifactId</span>&gt;</span>
       <span>&lt;<span>version</span>&gt;</span>$</span><span>{cucumber.version}</span><span><span>&lt;/<span>version</span>&gt;</span>
       <span>&lt;<span>scope</span>&gt;</span>test<span>&lt;/<span>scope</span>&gt;</span>
   <span>&lt;/<span>dependency</span>&gt;</span>
   <span>&lt;<span>dependency</span>&gt;</span>
       <span>&lt;<span>groupId</span>&gt;</span>io.cucumber<span>&lt;/<span>groupId</span>&gt;</span>
       <span>&lt;<span>artifactId</span>&gt;</span>cucumber-spring<span>&lt;/<span>artifactId</span>&gt;</span>
       <span>&lt;<span>version</span>&gt;</span>$</span><span>{cucumber.version}</span><span><span>&lt;/<span>version</span>&gt;</span>
       <span>&lt;<span>scope</span>&gt;</span>test<span>&lt;/<span>scope</span>&gt;</span>
   <span>&lt;/<span>dependency</span>&gt;</span>
   <span>&lt;<span>dependency</span>&gt;</span>
       <span>&lt;<span>groupId</span>&gt;</span>io.cucumber<span>&lt;/<span>groupId</span>&gt;</span>
       <span>&lt;<span>artifactId</span>&gt;</span>cucumber-junit<span>&lt;/<span>artifactId</span>&gt;</span>
       <span>&lt;<span>version</span>&gt;</span>$</span><span>{cucumber.version}</span><span><span>&lt;/<span>version</span>&gt;</span>
       <span>&lt;<span>scope</span>&gt;</span>test<span>&lt;/<span>scope</span>&gt;</span>
   <span>&lt;/<span>dependency</span>&gt;</span></span>
   </code>

<code><span>&lt;<span>dependency</span>&gt;</span>
    <span>&lt;<span>groupId</span>&gt;</span>com.tvd12<span>&lt;/<span>groupId</span>&gt;</span>
    <span>&lt;<span>artifactId</span>&gt;</span>test-util<span>&lt;/<span>artifactId</span>&gt;</span>
    <span>&lt;<span>version</span>&gt;</span>1.1.6<span>&lt;/<span>version</span>&gt;</span>
    <span>&lt;<span>scope</span>&gt;</span>test<span>&lt;/<span>scope</span>&gt;</span>
<span>&lt;/<span>dependency</span>&gt;</span>
</code>

2. Tạo file <code>hello-and-goodbye.feature</code> thế này trong foler <code>src/test/resources</code>:

   Feature: Say hello and good bye
     Scenario: client makes call to GET /hello-and-goodbye
       When the client calls /hello-and-goodbye
       Then the client receives status code of 200
       And the client receives server response Hello World! and I will never say good bye
   

3. Tạo file <code>CucumberGoodbyeControllerTest</code> thế này:

   package com.example.spring_test.test;
   
   import org.junit.runner.RunWith;
   
   import io.cucumber.junit.Cucumber;
   import io.cucumber.junit.CucumberOptions;
   
   @RunWith(Cucumber.class)
   @CucumberOptions(features = "src/test/resources")
   public class CucumberGoodbyeControllerTest {}
   

4. Tạo file <code>CucumberGoodbyeControllerStepsTest</code> thế này:

   package com.example.spring_test.test;
   
   import static org.mockito.Mockito.mock;
   import static org.mockito.Mockito.when;
   
   import java.io.IOException;
   import java.util.HashMap;
   import java.util.Map;
   
   import org.junit.jupiter.api.extension.ExtendWith;
   import org.springframework.beans.factory.annotation.Autowired;
   import org.springframework.boot.test.context.SpringBootTest;
   import org.springframework.boot.test.context.SpringBootTest.WebEnvironment;
   import org.springframework.http.ResponseEntity;
   import org.springframework.test.context.junit.jupiter.SpringExtension;
   import org.springframework.web.client.RestTemplate;
   
   import com.example.spring_test.SpringJUnitTestStartup;
   import com.example.spring_test.controller.GoodbyeController;
   import com.example.spring_test.service.GoodByeService;
   import com.tvd12.test.reflect.FieldUtil;
   
   import io.cucumber.java.en.And;
   import io.cucumber.java.en.Then;
   import io.cucumber.java.en.When;
   import io.cucumber.spring.CucumberContextConfiguration;
   
   @ExtendWith(SpringExtension.class)
   @SpringBootTest(
       classes = SpringJUnitTestStartup.class,
       webEnvironment = WebEnvironment.DEFINED_PORT
   )
   @CucumberContextConfiguration
   public class CucumberGoodbyeControllerStepsTest {
   
       @Autowired
       private GoodbyeController goodbyeController;
   
       private ResponseEntity responseEntity;
       private final RestTemplate restTemplate = new RestTemplate();
   
       @When("^the client calls /hello-and-goodbye")
       public void the_client_issues_GET_hello_and_goodbye() throws Throwable{
           final String who = "World";
           final String goodBye = "I will never say good bye";
           final GoodByeService goodByeService = mock(GoodByeService.class);
           when(goodByeService.goodBye(who)).thenReturn(goodBye);
           FieldUtil.setFieldValue(goodbyeController, "goodByeService", goodByeService);
   
           executeGet("http://localhost:8080/hello-and-goodbye?who=World");
       }
   
       private void executeGet(String url) throws IOException {
           final Map headers = new HashMap();
           headers.put("Accept", "application/json");
           responseEntity = restTemplate.getForEntity(url, String.class);
       }
   
       @Then("^the client receives status code of (\d+)$")
       public void the_client_receives_status_code_of(int statusCode) {
           assert responseEntity.getStatusCode().value() == statusCode;
       }
   
       @And("^the client receives server response (.+)$")
       public void the_client_receives_server_response_body(String response) {
           assert responseEntity.getBody().equals(response);
       }
   }