Catch import error separately for SUMModel

[SimonYansenZhao]

Description

This PR resolves the issue #2064. Because TensorFlow breaking changes make the code for SUMModel not work, so the tests relating to SUMModel are disabled, and import errors on SUMModel should be separately handled, otherwise, the imports following SUMModel (such as ImplicitCF) will not be run.

recommenders/tests/smoke/recommenders/recommender/test_deeprec_model.py

Lines 10 to 32 in 96fe3cf

	try:
	import tensorflow as tf
	from recommenders.models.deeprec.deeprec_utils import (
	download_deeprec_resources,
	prepare_hparams,
	)
	from recommenders.models.deeprec.models.base_model import BaseModel
	from recommenders.models.deeprec.models.xDeepFM import XDeepFMModel
	from recommenders.models.deeprec.models.dkn import DKN
	from recommenders.models.deeprec.io.iterator import FFMTextIterator
	from recommenders.models.deeprec.io.dkn_iterator import DKNTextIterator
	from recommenders.models.deeprec.io.sequential_iterator import SequentialIterator
	from recommenders.models.deeprec.models.sequential.sli_rec import SLI_RECModel
	from recommenders.models.deeprec.models.sequential.sum import SUMModel
	from recommenders.datasets.amazon_reviews import (
	download_and_extract,
	data_preprocessing,
	)
	from recommenders.models.deeprec.models.graphrec.lightgcn import LightGCN
	from recommenders.models.deeprec.DataModel.ImplicitCF import ImplicitCF
	except ImportError:
	pass # disable error while collecting tests for non-gpu environments

Related Issues

#2064

Checklist:

• I have followed the contribution guidelines and code style for this project.
• I have added tests covering my contributions.
• I have updated the documentation accordingly.
• I have signed the commits, e.g. git commit -s -m "your commit message".
• This PR is being made to staging branch AND NOT TO main branch.