How to perform unit testing in SpringBoot?

One option for conducting unit testing in SpringBoot is to use JUnit and the Spring Boot Test framework. Here is a simple example:

1. First, add the dependencies for JUnit and Spring Boot Test in the pom.xml file.

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-test</artifactId>
    <scope>test</scope>
</dependency>

1. Create a test class and annotate it with the @SpringBootTest annotation, as shown in the example code below:

import org.junit.jupiter.api.Test;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;

@SpringBootTest
public class MyServiceTest {

    @Autowired
    private MyService myService;

    @Test
    public void testMyService() {
        // perform test
    }
}

1. When writing test logic in a test method, assertions can be used to verify if the results meet expectations. An example code is as follows:

import static org.junit.jupiter.api.Assertions.assertEquals;

@Test
public void testMyService() {
    String result = myService.doSomething();
    assertEquals("expected result", result);
}

1. To run the test class, you can execute the tests using an IDE or Maven command.

mvn test

By following these steps, unit testing can be conducted in SpringBoot. When writing unit tests, tools like Mockito can be used to simulate dependent objects for better testing.