### Question:
MetaMtmCascadeExtController extends AbstractController implements MetaMtmCascadeExtAPI { @Override @GetMapping(value = "/list") public ResponseEntity<List<MetaMtmCascadeExtListVO>> list(@Valid MetaMtmCascadeExtQO metaMtmCascadeExtQO) { List<MetaMtmCascadeExtListVO> list = metaMtmCascadeExtService.list(metaMtmCascadeExtQO); return ResponseEntity.ok(list); }  @Override @PostMapping(value = "/save") @ResponseStatus(HttpStatus.CREATED) ResponseEntity<MetaMtmCascadeExtShowVO> save(@Valid @RequestBody MetaMtmCascadeExtAddDTO metaMtmCascadeExtAddDTO); @Override @PutMapping(value = "/update") ResponseEntity<MetaMtmCascadeExtShowVO> update(@Valid @RequestBody MetaMtmCascadeExtUpdateDTO metaMtmCascadeExtUpdateDTO); @Override @GetMapping(value = "/list") ResponseEntity<List<MetaMtmCascadeExtListVO>> list(@Valid MetaMtmCascadeExtQO metaMtmCascadeExtQO); @Override @GetMapping(value = "/{mtmCascadeExtId}") ResponseEntity<MetaMtmCascadeExtShowVO> show(@PathVariable Integer mtmCascadeExtId); @Override @DeleteMapping(value = "/{mtmCascadeExtId}") ResponseEntity<Integer> delete(@PathVariable Integer mtmCascadeExtId); @Override @PutMapping(value = "/delete_batch") ResponseEntity<Integer> deleteBatch(@RequestBody Integer[] id);  }### Answer:
@Test public void list() throws Exception { MetaMtmCascadeExtPO metaMtmCascadeExt = generateHelper.saveMtmCascadeExtExample(this.metaManyToMany.getMtmId(), metaEntity1.getEntityId(), metaEntity2.getEntityId(), metaField2.getFieldId()); restMockMvc.perform(get(getApiPath() + "/meta_mtm_cascade_ext/list")) .andExpect(status().isOk()) .andExpect(jsonPath("$.length()").value(is(1))); }