### Question:
ProductServiceImpl implements ProductService { @Override public Result modifyBrand(BrandInsertReq brandInsertReq) { int result = brandDAO.updateBrand(brandInsertReq); if (result == 0){ throw new CommonBizException(ExpCodeEnum.BRADN_UPDATE_FAIL); } return Result.newSuccessResult(); }  @Override Result createProduct(ProdInsertReq prodInsertReq); @Override Result updateProduct(ProdUpdateReq prodUpdateReq); @Override Result<List<ProductEntity>> findProducts(ProdQueryReq prodQueryReq); @Override Result createCategoty(CategoryEntity categoryEntity); @Override Result modifyCategory(CategoryEntity categoryEntity); @Override Result deleteCategory(String categoryId); @Override Result createBrand(BrandInsertReq brandInsertReq); @Override Result modifyBrand(BrandInsertReq brandInsertReq); @Override Result<List<CategoryEntity>> findCategorys(CategoryQueryReq categoryQueryReq); @Override Result<List<BrandEntity>> findBrands(BrandQueryReq brandQueryReq); void checkBrandParam(BrandInsertReq brandInsertReq);  }### Answer:
@Test public void testUpdateBrand(){ BrandInsertReq brandInsertReq = new BrandInsertReq(); brandInsertReq.setId("8f33629890684f8fbc005edadc2c296c"); brandInsertReq.setBrandLogoUrl("lihang.abc"); productService.modifyBrand(brandInsertReq); }