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EDIT :: import_as_example.py

# 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. """ Example module that is used for testing modules that import file system modules to be patched under another name. """ import os as my_os import pathlib import sys from builtins import open as bltn_open from io import open as io_open from os import path from os import stat from os import stat as my_stat from os.path import exists, isfile, isdir, islink from os.path import exists as my_exists from pathlib import Path def check_if_exists1(filepath): # test patching module imported under other name return my_os.path.exists(filepath) def check_if_exists2(filepath): # tests patching path imported from os return path.exists(filepath) def check_if_exists3(filepath): # tests patching Path imported from pathlib return Path(filepath).exists() def check_if_exists4(filepath, file_exists=my_os.path.exists): return file_exists(filepath) def check_if_exists5(filepath): # tests patching `exists` imported from os.path return exists(filepath) def check_if_exists6(filepath): # tests patching `exists` imported from os.path as other name return my_exists(filepath) def check_if_exists7(filepath): # tests patching pathlib return pathlib.Path(filepath).exists() def check_if_isfile(filepath): # tests patching `isfile` imported from os.path return isfile(filepath) def check_if_isdir(filepath): # tests patching `isdir` imported from os.path return isdir(filepath) def check_if_islink(filepath): # tests patching `islink` imported from os.path return islink(filepath) def file_stat1(filepath): # tests patching `stat` imported from os return stat(filepath) def file_stat2(filepath): # tests patching `stat` imported from os as other name return my_stat(filepath) def system_stat(filepath): if sys.platform == "win32": from nt import stat as system_stat else: from posix import stat as system_stat return system_stat(filepath) def file_contents1(filepath): with bltn_open(filepath, encoding="utf8") as f: return f.read() def file_contents2(filepath): with io_open(filepath, encoding="utf8") as f: return f.read() def exists_this_file(): """Returns True in real fs only""" return exists(__file__) def open_this_file(): """Works only in real fs""" with open(__file__, encoding="utf8"): pass def return_this_file_path(): """Works only in real fs""" return Path(__file__) class TestDefaultArg: def check_if_exists(self, filepath, file_exists=my_os.path.exists): # this is a similar case as in the tempfile implementation under Posix return file_exists(filepath)

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