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")); } }