tasks2/StringCalculator/src/test/java/pl/dmcs/CalculatorTest.java

package pl.dmcs;

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

public class CalculatorTest {

    private final Calculator calculator = new Calculator();

    @Test
    public void testAddEmptyString() {
        assertEquals(0, calculator.add(""));
    }

    @Test
    public void testAddOneNumber() {
        assertEquals(1, calculator.add("1"));
    }

    @Test
    public void testAddTwoNumbers() {
        assertEquals(3, calculator.add("1,2"));
    }

}