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# Copyright 2020 The HuggingFace Team. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import unittest
import requests
# Try to import everything from transformers to ensure every object can be loaded.
from transformers import * # noqa F406
from transformers.file_utils import CONFIG_NAME, WEIGHTS_NAME, filename_to_url, get_from_cache, hf_bucket_url
from transformers.testing_utils import DUMMY_UNKWOWN_IDENTIFIER
MODEL_ID = DUMMY_UNKWOWN_IDENTIFIER
# An actual model hosted on huggingface.co
REVISION_ID_DEFAULT = "main"
# Default branch name
REVISION_ID_ONE_SPECIFIC_COMMIT = "f2c752cfc5c0ab6f4bdec59acea69eefbee381c2"
# One particular commit (not the top of `main`)
REVISION_ID_INVALID = "aaaaaaa"
# This commit does not exist, so we should 404.
PINNED_SHA1 = "d9e9f15bc825e4b2c9249e9578f884bbcb5e3684"
# Sha-1 of config.json on the top of `main`, for checking purposes
PINNED_SHA256 = "4b243c475af8d0a7754e87d7d096c92e5199ec2fe168a2ee7998e3b8e9bcb1d3"
# Sha-256 of pytorch_model.bin on the top of `main`, for checking purposes
class GetFromCacheTests(unittest.TestCase):
def test_bogus_url(self):
# This lets us simulate no connection
# as the error raised is the same
# `ConnectionError`
url = "https://bogus"
with self.assertRaisesRegex(ValueError, "Connection error"):
_ = get_from_cache(url)
def test_file_not_found(self):
# Valid revision (None) but missing file.
url = hf_bucket_url(MODEL_ID, filename="missing.bin")
with self.assertRaisesRegex(requests.exceptions.HTTPError, "404 Client Error"):
_ = get_from_cache(url)
def test_revision_not_found(self):
# Valid file but missing revision
url = hf_bucket_url(MODEL_ID, filename=CONFIG_NAME, revision=REVISION_ID_INVALID)
with self.assertRaisesRegex(requests.exceptions.HTTPError, "404 Client Error"):
_ = get_from_cache(url)
def test_standard_object(self):
url = hf_bucket_url(MODEL_ID, filename=CONFIG_NAME, revision=REVISION_ID_DEFAULT)
filepath = get_from_cache(url, force_download=True)
metadata = filename_to_url(filepath)
self.assertEqual(metadata, (url, f'"{PINNED_SHA1}"'))
def test_standard_object_rev(self):
# Same object, but different revision
url = hf_bucket_url(MODEL_ID, filename=CONFIG_NAME, revision=REVISION_ID_ONE_SPECIFIC_COMMIT)
filepath = get_from_cache(url, force_download=True)
metadata = filename_to_url(filepath)
self.assertNotEqual(metadata[1], f'"{PINNED_SHA1}"')
# Caution: check that the etag is *not* equal to the one from `test_standard_object`
def test_lfs_object(self):
url = hf_bucket_url(MODEL_ID, filename=WEIGHTS_NAME, revision=REVISION_ID_DEFAULT)
filepath = get_from_cache(url, force_download=True)
metadata = filename_to_url(filepath)
self.assertEqual(metadata, (url, f'"{PINNED_SHA256}"'))
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