Kuidas te implementite oma koodi testimise JUnit-iga?

JUnit is used for writing and running unit tests in Java. To test code with JUnit, you need to:

1. Create a test class annotated with @Test for each test method.
2. In test methods, call the methods of the class being tested and verify the results using assertions like assertEquals, assertTrue.
3. Run the tests via IDE or build system (Maven, Gradle).

Example of a simple test:

import static org.junit.Assert.*;
import org.junit.Test;

public class CalculatorTest {
    @Test
    public void testAdd() {
        Calculator calc = new Calculator();
        int result = calc.add(2, 3);
        assertEquals(5, result);
    }
}

This approach helps automatically verify the correctness of the code during changes.