@Test
 public void should_verify_that_actual_is_equal_to_zero() {
   assertions.isZero();
   verify(bigDecimals).assertIsZero(assertions.info, assertions.actual);
 }
 @Test
 public void should_return_this() {
   BigDecimalAssert returned = assertions.isZero();
   assertSame(assertions, returned);
 }
 @Before
 public void setUp() {
   bigDecimals = mock(BigDecimals.class);
   assertions = new BigDecimalAssert(ONE);
   assertions.bigDecimals = bigDecimals;
 }