cpython/Lib/test/test_tools/test_pathfix.py

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import os
import subprocess
import sys
import unittest
from test import support
from test.test_tools import scriptsdir, skip_if_missing
# need Tools/script/ directory: skip if run on Python installed on the system
skip_if_missing()
class TestPathfixFunctional(unittest.TestCase):
script = os.path.join(scriptsdir, 'pathfix.py')
def setUp(self):
self.addCleanup(support.unlink, support.TESTFN)
def pathfix(self, shebang, pathfix_flags, exitcode=0, stdout='', stderr='',
directory=''):
if directory:
# bpo-38347: Test filename should contain lowercase, uppercase,
# "-", "_" and digits.
filename = os.path.join(directory, 'script-A_1.py')
pathfix_arg = directory
else:
filename = support.TESTFN
pathfix_arg = filename
with open(filename, 'w', encoding='utf8') as f:
f.write(f'{shebang}\n' + 'print("Hello world")\n')
encoding = sys.getfilesystemencoding()
proc = subprocess.run(
[sys.executable, self.script,
*pathfix_flags, '-n', pathfix_arg],
env={**os.environ, 'PYTHONIOENCODING': encoding},
capture_output=True)
if stdout == '' and proc.returncode == 0:
stdout = f'{filename}: updating\n'
self.assertEqual(proc.returncode, exitcode, proc)
self.assertEqual(proc.stdout.decode(encoding), stdout.replace('\n', os.linesep), proc)
self.assertEqual(proc.stderr.decode(encoding), stderr.replace('\n', os.linesep), proc)
with open(filename, 'r', encoding='utf8') as f:
output = f.read()
lines = output.split('\n')
self.assertEqual(lines[1:], ['print("Hello world")', ''])
new_shebang = lines[0]
if proc.returncode != 0:
self.assertEqual(shebang, new_shebang)
return new_shebang
def test_recursive(self):
tmpdir = support.TESTFN + '.d'
self.addCleanup(support.rmtree, tmpdir)
os.mkdir(tmpdir)
expected_stderr = f"recursedown('{os.path.basename(tmpdir)}')\n"
self.assertEqual(
self.pathfix(
'#! /usr/bin/env python',
['-i', '/usr/bin/python3'],
directory=tmpdir,
stderr=expected_stderr),
'#! /usr/bin/python3')
def test_pathfix(self):
self.assertEqual(
self.pathfix(
'#! /usr/bin/env python',
['-i', '/usr/bin/python3']),
'#! /usr/bin/python3')
self.assertEqual(
self.pathfix(
'#! /usr/bin/env python -R',
['-i', '/usr/bin/python3']),
'#! /usr/bin/python3')
def test_pathfix_keeping_flags(self):
self.assertEqual(
self.pathfix(
'#! /usr/bin/env python -R',
['-i', '/usr/bin/python3', '-k']),
'#! /usr/bin/python3 -R')
self.assertEqual(
self.pathfix(
'#! /usr/bin/env python',
['-i', '/usr/bin/python3', '-k']),
'#! /usr/bin/python3')
def test_pathfix_adding_flag(self):
self.assertEqual(
self.pathfix(
'#! /usr/bin/env python',
['-i', '/usr/bin/python3', '-a', 's']),
'#! /usr/bin/python3 -s')
self.assertEqual(
self.pathfix(
'#! /usr/bin/env python -S',
['-i', '/usr/bin/python3', '-a', 's']),
'#! /usr/bin/python3 -s')
self.assertEqual(
self.pathfix(
'#! /usr/bin/env python -V',
['-i', '/usr/bin/python3', '-a', 'v', '-k']),
'#! /usr/bin/python3 -vV')
self.assertEqual(
self.pathfix(
'#! /usr/bin/env python',
['-i', '/usr/bin/python3', '-a', 'Rs']),
'#! /usr/bin/python3 -Rs')
self.assertEqual(
self.pathfix(
'#! /usr/bin/env python -W default',
['-i', '/usr/bin/python3', '-a', 's', '-k']),
'#! /usr/bin/python3 -sW default')
def test_pathfix_adding_errors(self):
self.pathfix(
'#! /usr/bin/env python -E',
['-i', '/usr/bin/python3', '-a', 'W default', '-k'],
exitcode=2,
stderr="-a option doesn't support whitespaces")
if __name__ == '__main__':
unittest.main()