@Test
 public void should_verify_that_actual_is_not_empty() {
   assertions.isNotEmpty();
   verify(arrays).assertNotEmpty(assertions.info, assertions.actual);
 }
 @Test
 public void should_return_this() {
   IntArrayAssert returned = assertions.isNotEmpty();
   assertSame(assertions, returned);
 }
 @Before
 public void setUp() {
   arrays = mock(IntArrays.class);
   assertions = new IntArrayAssert(emptyArray());
   assertions.arrays = arrays;
 }