- Prerequisite
- Add Dependencies
- Unit Test
- Execute Test
Prerequisite
Started with Spring Initializr
In pom.xml
Add Dependencies
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
<exclusions>
<exclusion>
<groupId>org.junit.vintage</groupId>
<artifactId>junit-vintage-engine</artifactId>
</exclusion>
</exclusions>
</dependency>Unit Test
- location: src/test/java/com/example/springboot/HelloControllerTest.java
package com.example.simple;
import static org.assertj.core.api.Assertions.*;
import java.net.URL;
import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.Test;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.boot.test.web.client.TestRestTemplate;
import org.springframework.boot.web.server.LocalServerPort;
import org.springframework.http.ResponseEntity;
@SpringBootTest(webEnvironment = SpringBootTest.WebEnvironment.RANDOM_PORT)
public class HelloControllerIT {
@LocalServerPort
private int port;
private URL base;
@Autowired
private TestRestTemplate template;
@BeforeEach
public void setUp() throws Exception {
this.base = new URL("http://localhost:" + port + "/");
}
@Test
public void getHello() throws Exception {
ResponseEntity<String> response = template.getForEntity(base.toString(),
String.class);
assertThat(response.getBody()).isEqualTo("Greetings from Spring Boot!");
}
}- location: src/test/java/com/example/springboot/HelloControllerIT.java
package com.example.simple;
import static org.assertj.core.api.Assertions.*;
import java.net.URL;
import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.Test;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.boot.test.web.client.TestRestTemplate;
import org.springframework.boot.web.server.LocalServerPort;
import org.springframework.http.ResponseEntity;
@SpringBootTest(webEnvironment = SpringBootTest.WebEnvironment.RANDOM_PORT)
public class HelloControllerIT {
@LocalServerPort
private int port;
private URL base;
@Autowired
private TestRestTemplate template;
@BeforeEach
public void setUp() throws Exception {
this.base = new URL("http://localhost:" + port + "/");
}
@Test
public void getHello() throws Exception {
ResponseEntity<String> response = template.getForEntity(base.toString(),
String.class);
assertThat(response.getBody()).isEqualTo("Greetings from Spring Boot!");
}
}Execute Test
$ mvn test- Test Result
[INFO] Tests run: 1, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 0.497 s - in com.example.simple.HelloControllerTest
2020-09-04 17:24:13.450 INFO 5607 --- [extShutdownHook] o.s.s.concurrent.ThreadPoolTaskExecutor : Shutting down ExecutorService 'applicationTaskExecutor'
2020-09-04 17:24:13.450 INFO 5607 --- [extShutdownHook] o.s.s.concurrent.ThreadPoolTaskExecutor : Shutting down ExecutorService 'applicationTaskExecutor'
[INFO]
[INFO] Results:
[INFO]
[INFO] Tests run: 2, Failures: 0, Errors: 0, Skipped: 0
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 4.445 s
[INFO] Finished at: 2020-09-04T17:24:13+09:00
[INFO] ------------------------------------------------------------------------