remove unnecessary old codes

IPython/utils/tests/test_module_paths.py

@@ -1,113 +1,111 b''
 # encoding: utf-8
 """Tests for IPython.utils.module_paths.py"""
 
 #-----------------------------------------------------------------------------
 #  Copyright (C) 2008-2011  The IPython Development Team
 #
 #  Distributed under the terms of the BSD License.  The full license is in
 #  the file COPYING, distributed as part of this software.
 #-----------------------------------------------------------------------------
 
 #-----------------------------------------------------------------------------
 # Imports
 #-----------------------------------------------------------------------------
 
-import os
 import shutil
 import sys
 import tempfile
 
 from pathlib import Path
 
 from IPython.testing.tools import make_tempfile
 
 import IPython.utils.module_paths as mp
 
 import nose.tools as nt
 
-env = os.environ
 TEST_FILE_PATH = Path(__file__).resolve().parent
 
 TMP_TEST_DIR = Path(tempfile.mkdtemp(suffix="with.dot"))
 #
 # Setup/teardown functions/decorators
 #
 
 old_syspath = sys.path
 
 def make_empty_file(fname):
     open(fname, 'w').close()
 
 
 def setup_module():
     """Setup testenvironment for the module:
 
     """
     # Do not mask exceptions here.  In particular, catching WindowsError is a
     # problem because that exception is only defined on Windows...
     Path(TMP_TEST_DIR / "xmod").mkdir(parents=True)
     Path(TMP_TEST_DIR / "nomod").mkdir(parents=True)
     make_empty_file(TMP_TEST_DIR / "xmod/__init__.py")
     make_empty_file(TMP_TEST_DIR / "xmod/sub.py")
     make_empty_file(TMP_TEST_DIR / "pack.py")
     make_empty_file(TMP_TEST_DIR / "packpyc.pyc")
     sys.path = [str(TMP_TEST_DIR)]
 
 def teardown_module():
     """Teardown testenvironment for the module:
 
             - Remove tempdir
             - restore sys.path
     """
     # Note: we remove the parent test dir, which is the root of all test
     # subdirs we may have created.  Use shutil instead of os.removedirs, so
     # that non-empty directories are all recursively removed.
     shutil.rmtree(TMP_TEST_DIR)
     sys.path = old_syspath
 
 def test_tempdir():
     """
     Ensure the test are done with a temporary file that have a dot somewhere.
     """
     nt.assert_in(".", str(TMP_TEST_DIR))
 
 
 def test_find_mod_1():
     """
     Search for a directory's file path.
     Expected output: a path to that directory's __init__.py file.
     """
     modpath = TMP_TEST_DIR / "xmod" / "__init__.py"
     nt.assert_equal(Path(mp.find_mod("xmod")), modpath)
 
 def test_find_mod_2():
     """
     Search for a directory's file path.
     Expected output: a path to that directory's __init__.py file.
     TODO: Confirm why this is a duplicate test.
     """
     modpath = TMP_TEST_DIR / "xmod" / "__init__.py"
     nt.assert_equal(Path(mp.find_mod("xmod")), modpath)
 
 def test_find_mod_3():
     """
     Search for a directory + a filename without its .py extension
     Expected output: full path with .py extension.
     """
     modpath = TMP_TEST_DIR / "xmod" / "sub.py"
     nt.assert_equal(Path(mp.find_mod("xmod.sub")), modpath)
 
 def test_find_mod_4():
     """
     Search for a filename without its .py extension
     Expected output: full path with .py extension
     """
     modpath = TMP_TEST_DIR / "pack.py"
     nt.assert_equal(Path(mp.find_mod("pack")), modpath)
 
 def test_find_mod_5():
     """
     Search for a filename with a .pyc extension
     Expected output: TODO: do we exclude or include .pyc files?
     """
     nt.assert_equal(mp.find_mod("packpyc"), None)