ret = test_ring_enqueue(exact_sz_r, cur_src, esize[i], 1,
TEST_RING_THREAD_DEF | TEST_RING_ELEM_SINGLE);
TEST_RING_VERIFY(ret != -ENOBUFS, exact_sz_r, goto test_fail);
ret = test_ring_enqueue(exact_sz_r, cur_src, esize[i], 1,
TEST_RING_THREAD_DEF | TEST_RING_ELEM_SINGLE);
TEST_RING_VERIFY(ret != -ENOBUFS, exact_sz_r, goto test_fail);