HomeworkMathTest

import junit.framework.TestCase;

public class HomeworkMathTest extends TestCase {

    public void testHomeworkExample() {
        assertEquals(85, HomeworkMath.sumOfSumsOfDigitsInCyclicOrder(582109));
    }

    public void testZero() {
        assertEquals(0, HomeworkMath.sumOfSumsOfDigitsInCyclicOrder(0));
    }

    public void testOneDigit() {
        assertEquals(7, HomeworkMath.sumOfSumsOfDigitsInCyclicOrder(7));
    }

    public void testTwoDigits() {
        assertEquals((1 + 3) + (3), HomeworkMath.sumOfSumsOfDigitsInCyclicOrder(13));
    }

    public void testThreeDigits() {
        assertEquals((1 + 2 + 3) + (2 + 3) + (3), HomeworkMath.sumOfSumsOfDigitsInCyclicOrder(123));
    }

}