What types of software testing do you know?

• Unit testing: Testing individual components or modules of a program in isolation.
• Integration testing: Testing the interaction between multiple modules.
• System testing: Testing the entire system as a whole, verifying compliance with functional and non-functional requirements.
• Acceptance testing: Verification by end-users or clients to ensure it meets their expectations.

Additionally:

• Functional testing: Verifying the system's compliance with functional requirements.
• Non-functional testing: Checking non-functional aspects such as performance, security, usability.
• Regression testing: Ensuring that code changes do not break existing functionality.
• Load testing: Determining system performance under specific loads.
• Stress testing: Testing the system under extreme load conditions.
• Security testing: Identifying vulnerabilities in the system.
• Usability testing: Assessing the ease and intuitiveness of system use by end-users.

In my work, I often use:

// Example of a unit test with JUnit
import org.junit.jupiter.api.Test;
import static org.junit.jupiter.api.Assertions.*;

class MyServiceTest {

    @Test
    void testAdd() {
        MyService service = new MyService();
        assertEquals(5, service.add(2, 3));
    }
}

// Example of an integration test with Spring Boot
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.http.ResponseEntity;

import static org.assertj.core.api.Assertions.assertThat;

@SpringBootTest(webEnvironment = SpringBootTest.WebEnvironment.RANDOM_PORT)
class MyControllerIntegrationTest {

    @Autowired
    private TestRestTemplate restTemplate;

    @Test
    void testHelloEndpoint() {
        ResponseEntity<String> response = restTemplate.getForEntity("/hello", String.class);
        assertThat(response.getBody()).isEqualTo("Hello, World!");
    }
}