### Question:
NewArithmetic { public boolean ifHasZero(int... nums) { LOGGER.info("Arithmetic check zero {}", VERSION); return !source.ifNonZero(nums); } NewArithmetic(NewSource source); int sum(int... nums); int mul(int... nums); boolean ifHasZero(int... nums);  }### Answer:
@Test public void testIfHasZero() { assertTrue(arithmetic.ifHasZero(-1, 0, 1)); }