get(ProductRepositoryInterface::class); $confProduct = $productRepository->get('configurable'); $simple10Product = $productRepository->get('simple_10'); $simple20Product = $productRepository->get('simple_20'); $this->assertEmpty(array_diff($confProduct->getIdentities(), $simple10Product->getIdentities())); $this->assertEmpty(array_diff($confProduct->getIdentities(), $simple20Product->getIdentities())); } }