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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 subprocess
import sys
from transformers import BertConfig, BertModel, BertTokenizer, pipeline
from transformers.testing_utils import TestCasePlus, require_torch
class OfflineTests(TestCasePlus):
@require_torch
def test_offline_mode(self):
# this test is a bit tricky since TRANSFORMERS_OFFLINE can only be changed before
# `transformers` is loaded, and it's too late for inside pytest - so we are changing it
# while running an external program
# python one-liner segments
# this must be loaded before socket.socket is monkey-patched
load = """
from transformers import BertConfig, BertModel, BertTokenizer, pipeline
"""
run = """
mname = "hf-internal-testing/tiny-random-bert"
BertConfig.from_pretrained(mname)
BertModel.from_pretrained(mname)
BertTokenizer.from_pretrained(mname)
pipe = pipeline(task="fill-mask", model=mname)
print("success")
"""
mock = """
import socket
def offline_socket(*args, **kwargs): raise RuntimeError("Offline mode is enabled, we shouldn't access internet")
socket.socket = offline_socket
"""
# Force fetching the files so that we can use the cache
mname = "hf-internal-testing/tiny-random-bert"
BertConfig.from_pretrained(mname)
BertModel.from_pretrained(mname)
BertTokenizer.from_pretrained(mname)
pipeline(task="fill-mask", model=mname)
# baseline - just load from_pretrained with normal network
cmd = [sys.executable, "-c", "\n".join([load, run, mock])]
# should succeed
env = self.get_env()
# should succeed as TRANSFORMERS_OFFLINE=1 tells it to use local files
env["TRANSFORMERS_OFFLINE"] = "1"
result = subprocess.run(cmd, env=env, check=False, capture_output=True)
self.assertEqual(result.returncode, 0, result.stderr)
self.assertIn("success", result.stdout.decode())
@require_torch
def test_offline_mode_no_internet(self):
# python one-liner segments
# this must be loaded before socket.socket is monkey-patched
load = """
from transformers import BertConfig, BertModel, BertTokenizer, pipeline
"""
run = """
mname = "hf-internal-testing/tiny-random-bert"
BertConfig.from_pretrained(mname)
BertModel.from_pretrained(mname)
BertTokenizer.from_pretrained(mname)
pipe = pipeline(task="fill-mask", model=mname)
print("success")
"""
mock = """
import socket
def offline_socket(*args, **kwargs): raise socket.error("Faking flaky internet")
socket.socket = offline_socket
"""
# Force fetching the files so that we can use the cache
mname = "hf-internal-testing/tiny-random-bert"
BertConfig.from_pretrained(mname)
BertModel.from_pretrained(mname)
BertTokenizer.from_pretrained(mname)
pipeline(task="fill-mask", model=mname)
# baseline - just load from_pretrained with normal network
cmd = [sys.executable, "-c", "\n".join([load, run, mock])]
# should succeed
env = self.get_env()
result = subprocess.run(cmd, env=env, check=False, capture_output=True)
self.assertEqual(result.returncode, 0, result.stderr)
self.assertIn("success", result.stdout.decode())
@require_torch
def test_offline_mode_sharded_checkpoint(self):
# this test is a bit tricky since TRANSFORMERS_OFFLINE can only be changed before
# `transformers` is loaded, and it's too late for inside pytest - so we are changing it
# while running an external program
# python one-liner segments
# this must be loaded before socket.socket is monkey-patched
load = """
from transformers import BertConfig, BertModel, BertTokenizer
"""
run = """
mname = "hf-internal-testing/tiny-random-bert-sharded"
BertConfig.from_pretrained(mname)
BertModel.from_pretrained(mname)
print("success")
"""
mock = """
import socket
def offline_socket(*args, **kwargs): raise ValueError("Offline mode is enabled")
socket.socket = offline_socket
"""
# baseline - just load from_pretrained with normal network
cmd = [sys.executable, "-c", "\n".join([load, run])]
# should succeed
env = self.get_env()
result = subprocess.run(cmd, env=env, check=False, capture_output=True)
self.assertEqual(result.returncode, 0, result.stderr)
self.assertIn("success", result.stdout.decode())
# next emulate no network
cmd = [sys.executable, "-c", "\n".join([load, mock, run])]
# Doesn't fail anymore since the model is in the cache due to other tests, so commenting this.
# env["TRANSFORMERS_OFFLINE"] = "0"
# result = subprocess.run(cmd, env=env, check=False, capture_output=True)
# self.assertEqual(result.returncode, 1, result.stderr)
# should succeed as TRANSFORMERS_OFFLINE=1 tells it to use local files
env["TRANSFORMERS_OFFLINE"] = "1"
result = subprocess.run(cmd, env=env, check=False, capture_output=True)
self.assertEqual(result.returncode, 0, result.stderr)
self.assertIn("success", result.stdout.decode())
@require_torch
def test_offline_mode_pipeline_exception(self):
load = """
from transformers import pipeline
"""
run = """
mname = "hf-internal-testing/tiny-random-bert"
pipe = pipeline(model=mname)
"""
mock = """
import socket
def offline_socket(*args, **kwargs): raise socket.error("Offline mode is enabled")
socket.socket = offline_socket
"""
env = self.get_env()
env["TRANSFORMERS_OFFLINE"] = "1"
cmd = [sys.executable, "-c", "\n".join([load, mock, run])]
result = subprocess.run(cmd, env=env, check=False, capture_output=True)
self.assertEqual(result.returncode, 1, result.stderr)
self.assertIn(
"You cannot infer task automatically within `pipeline` when using offline mode",
result.stderr.decode().replace("\n", ""),
)
@require_torch
def test_offline_model_dynamic_model(self):
load = """
from transformers import AutoModel
"""
run = """
mname = "hf-internal-testing/test_dynamic_model"
AutoModel.from_pretrained(mname, trust_remote_code=True)
print("success")
"""
# baseline - just load from_pretrained with normal network
cmd = [sys.executable, "-c", "\n".join([load, run])]
# should succeed
env = self.get_env()
result = subprocess.run(cmd, env=env, check=False, capture_output=True)
self.assertEqual(result.returncode, 0, result.stderr)
self.assertIn("success", result.stdout.decode())
# should succeed as TRANSFORMERS_OFFLINE=1 tells it to use local files
env["TRANSFORMERS_OFFLINE"] = "1"
result = subprocess.run(cmd, env=env, check=False, capture_output=True)
self.assertEqual(result.returncode, 0, result.stderr)
self.assertIn("success", result.stdout.decode())
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