public void testNegativeIntLiteral() {

    assertEquals(5, NegativeConstant.returnFive());
    assertEquals(-5, NegativeConstant.returnMinusFive());
  }
  public void testNegativeFloatLiteral() {

    assertEquals(0.1f, NegativeConstant.returnPointOne());
    assertEquals(-0.1f, NegativeConstant.returnMinusPointOne());
  }