### Question:
DiseaseManagementImpl implements DiseaseManagementService { @Override public CommonResult updateDiseaseById(Disease disease) { if (diseaseMapper.get(disease.getId()) == null) { return CommonResult.fail(E_602); } int count = diseaseMapper.update(disease); if (count == 0) { return CommonResult.fail(); } return CommonResult.success(count); }  @Override CommonResult getDiseaseById(Short id); @Override CommonResult insertDisease(Disease disease); @Override CommonResult updateDiseaseById(Disease disease); @Override CommonResult deleteDiseaseById(Short id); @Override CommonResult listAllDiseases(); @Override CommonResult listDiseaseByType(Integer type);  }### Answer:
@Test public void testUpdateDiseaseById() throws Exception { }