string-calculator/src/test/java/StringCalculatorTest.java

import org.junit.jupiter.api.Assertions;
import org.junit.jupiter.api.Test;
import pl.konrad.StringCalculator;

public class StringCalculatorTest {

    StringCalculator calc = new StringCalculator();

    @Test
    public void testStringCalculator(){
        Assertions.assertEquals(0,calc.add(""));
        Assertions.assertEquals(1,calc.add("1"));
        Assertions.assertEquals(3,calc.add("1,2"));
        Assertions.assertEquals(24,calc.add("6,6,6,6"));
        Assertions.assertEquals(100,calc.add("20,10,5,5,5,5,5,5,5,5,5,5,5,5,5,5"));
    }
}