### Question:
DifferenceOfSquaresCalculator { int computeSumOfSquaresTo(int input) { throw new UnsupportedOperationException("Delete this statement and write your own implementation."); }    }### Answer:
@Ignore("Remove to run test") @Test public void testSumOfSquaresUpToOne() { int expected = 1; int actual = calculator.computeSumOfSquaresTo(1); assertEquals(expected, actual); }
@Ignore("Remove to run test") @Test public void testSumOfSquaresUpToFive() { int expected = 55; int actual = calculator.computeSumOfSquaresTo(5); assertEquals(expected, actual); }
@Ignore("Remove to run test") @Test public void testSumOfSquaresUpToHundred() { int expected = 338350; int actual = calculator.computeSumOfSquaresTo(100); assertEquals(expected, actual); }