### Question:
DifferenceOfSquaresCalculator { int computeDifferenceOfSquares(int input) { throw new UnsupportedOperationException("Delete this statement and write your own implementation."); }    }### Answer:
@Ignore("Remove to run test") @Test public void testDifferenceOfSquaresUpToOne() { int expected = 0; int actual = calculator.computeDifferenceOfSquares(1); assertEquals(expected, actual); }
@Ignore("Remove to run test") @Test public void testDifferenceOfSquaresUpToFive() { int expected = 170; int actual = calculator.computeDifferenceOfSquares(5); assertEquals(expected, actual); }
@Ignore("Remove to run test") @Test public void testDifferenceOfSquaresUpToHundred() { int expected = 25164150; int actual = calculator.computeDifferenceOfSquares(100); assertEquals(expected, actual); }