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255 lines
9.2 KiB
Python
255 lines
9.2 KiB
Python
"""
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Test the implementation of the PEP 540: the UTF-8 Mode.
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"""
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import locale
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import sys
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import textwrap
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import unittest
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from test import support
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from test.support.script_helper import assert_python_ok, assert_python_failure
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MS_WINDOWS = (sys.platform == 'win32')
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POSIX_LOCALES = ('C', 'POSIX')
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VXWORKS = (sys.platform == "vxworks")
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class UTF8ModeTests(unittest.TestCase):
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DEFAULT_ENV = {
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'PYTHONUTF8': '',
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'PYTHONLEGACYWINDOWSFSENCODING': '',
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'PYTHONCOERCECLOCALE': '0',
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}
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def posix_locale(self):
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loc = locale.setlocale(locale.LC_CTYPE, None)
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return (loc in POSIX_LOCALES)
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def get_output(self, *args, failure=False, **kw):
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kw = dict(self.DEFAULT_ENV, **kw)
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if failure:
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out = assert_python_failure(*args, **kw)
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out = out[2]
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else:
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out = assert_python_ok(*args, **kw)
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out = out[1]
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return out.decode().rstrip("\n\r")
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@unittest.skipIf(MS_WINDOWS, 'Windows has no POSIX locale')
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def test_posix_locale(self):
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code = 'import sys; print(sys.flags.utf8_mode)'
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for loc in POSIX_LOCALES:
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with self.subTest(LC_ALL=loc):
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out = self.get_output('-c', code, LC_ALL=loc)
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self.assertEqual(out, '1')
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def test_xoption(self):
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code = 'import sys; print(sys.flags.utf8_mode)'
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out = self.get_output('-X', 'utf8', '-c', code)
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self.assertEqual(out, '1')
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# undocumented but accepted syntax: -X utf8=1
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out = self.get_output('-X', 'utf8=1', '-c', code)
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self.assertEqual(out, '1')
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out = self.get_output('-X', 'utf8=0', '-c', code)
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self.assertEqual(out, '0')
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if MS_WINDOWS:
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# PYTHONLEGACYWINDOWSFSENCODING disables the UTF-8 Mode
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# and has the priority over -X utf8
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out = self.get_output('-X', 'utf8', '-c', code,
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PYTHONLEGACYWINDOWSFSENCODING='1')
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self.assertEqual(out, '0')
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def test_env_var(self):
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code = 'import sys; print(sys.flags.utf8_mode)'
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out = self.get_output('-c', code, PYTHONUTF8='1')
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self.assertEqual(out, '1')
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out = self.get_output('-c', code, PYTHONUTF8='0')
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self.assertEqual(out, '0')
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# -X utf8 has the priority over PYTHONUTF8
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out = self.get_output('-X', 'utf8=0', '-c', code, PYTHONUTF8='1')
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self.assertEqual(out, '0')
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if MS_WINDOWS:
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# PYTHONLEGACYWINDOWSFSENCODING disables the UTF-8 mode
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# and has the priority over PYTHONUTF8
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out = self.get_output('-X', 'utf8', '-c', code, PYTHONUTF8='1',
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PYTHONLEGACYWINDOWSFSENCODING='1')
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self.assertEqual(out, '0')
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# Cannot test with the POSIX locale, since the POSIX locale enables
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# the UTF-8 mode
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if not self.posix_locale():
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# PYTHONUTF8 should be ignored if -E is used
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out = self.get_output('-E', '-c', code, PYTHONUTF8='1')
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self.assertEqual(out, '0')
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# invalid mode
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out = self.get_output('-c', code, PYTHONUTF8='xxx', failure=True)
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self.assertIn('invalid PYTHONUTF8 environment variable value',
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out.rstrip())
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def test_filesystemencoding(self):
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code = textwrap.dedent('''
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import sys
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print("{}/{}".format(sys.getfilesystemencoding(),
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sys.getfilesystemencodeerrors()))
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''')
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if MS_WINDOWS:
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expected = 'utf-8/surrogatepass'
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else:
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expected = 'utf-8/surrogateescape'
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out = self.get_output('-X', 'utf8', '-c', code)
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self.assertEqual(out, expected)
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if MS_WINDOWS:
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# PYTHONLEGACYWINDOWSFSENCODING disables the UTF-8 mode
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# and has the priority over -X utf8 and PYTHONUTF8
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out = self.get_output('-X', 'utf8', '-c', code,
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PYTHONUTF8='strict',
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PYTHONLEGACYWINDOWSFSENCODING='1')
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self.assertEqual(out, 'mbcs/replace')
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def test_stdio(self):
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code = textwrap.dedent('''
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import sys
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print(f"stdin: {sys.stdin.encoding}/{sys.stdin.errors}")
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print(f"stdout: {sys.stdout.encoding}/{sys.stdout.errors}")
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print(f"stderr: {sys.stderr.encoding}/{sys.stderr.errors}")
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''')
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out = self.get_output('-X', 'utf8', '-c', code,
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PYTHONIOENCODING='')
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self.assertEqual(out.splitlines(),
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['stdin: utf-8/surrogateescape',
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'stdout: utf-8/surrogateescape',
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'stderr: utf-8/backslashreplace'])
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# PYTHONIOENCODING has the priority over PYTHONUTF8
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out = self.get_output('-X', 'utf8', '-c', code,
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PYTHONIOENCODING="latin1")
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self.assertEqual(out.splitlines(),
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['stdin: iso8859-1/strict',
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'stdout: iso8859-1/strict',
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'stderr: iso8859-1/backslashreplace'])
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out = self.get_output('-X', 'utf8', '-c', code,
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PYTHONIOENCODING=":namereplace")
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self.assertEqual(out.splitlines(),
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['stdin: utf-8/namereplace',
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'stdout: utf-8/namereplace',
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'stderr: utf-8/backslashreplace'])
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def test_io(self):
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code = textwrap.dedent('''
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import sys
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filename = sys.argv[1]
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with open(filename) as fp:
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print(f"{fp.encoding}/{fp.errors}")
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''')
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filename = __file__
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out = self.get_output('-c', code, filename, PYTHONUTF8='1')
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self.assertEqual(out, 'UTF-8/strict')
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def _check_io_encoding(self, module, encoding=None, errors=None):
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filename = __file__
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# Encoding explicitly set
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args = []
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if encoding:
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args.append(f'encoding={encoding!r}')
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if errors:
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args.append(f'errors={errors!r}')
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code = textwrap.dedent('''
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import sys
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from %s import open
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filename = sys.argv[1]
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with open(filename, %s) as fp:
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print(f"{fp.encoding}/{fp.errors}")
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''') % (module, ', '.join(args))
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out = self.get_output('-c', code, filename,
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PYTHONUTF8='1')
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if not encoding:
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encoding = 'UTF-8'
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if not errors:
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errors = 'strict'
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self.assertEqual(out, f'{encoding}/{errors}')
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def check_io_encoding(self, module):
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self._check_io_encoding(module, encoding="latin1")
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self._check_io_encoding(module, errors="namereplace")
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self._check_io_encoding(module,
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encoding="latin1", errors="namereplace")
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def test_io_encoding(self):
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self.check_io_encoding('io')
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def test_pyio_encoding(self):
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self.check_io_encoding('_pyio')
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def test_locale_getpreferredencoding(self):
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code = 'import locale; print(locale.getpreferredencoding(False), locale.getpreferredencoding(True))'
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out = self.get_output('-X', 'utf8', '-c', code)
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self.assertEqual(out, 'UTF-8 UTF-8')
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for loc in POSIX_LOCALES:
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with self.subTest(LC_ALL=loc):
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out = self.get_output('-X', 'utf8', '-c', code, LC_ALL=loc)
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self.assertEqual(out, 'UTF-8 UTF-8')
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@unittest.skipIf(MS_WINDOWS, 'test specific to Unix')
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def test_cmd_line(self):
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arg = 'h\xe9\u20ac'.encode('utf-8')
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arg_utf8 = arg.decode('utf-8')
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arg_ascii = arg.decode('ascii', 'surrogateescape')
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code = 'import locale, sys; print("%s:%s" % (locale.getpreferredencoding(), ascii(sys.argv[1:])))'
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def check(utf8_opt, expected, **kw):
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out = self.get_output('-X', utf8_opt, '-c', code, arg, **kw)
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args = out.partition(':')[2].rstrip()
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self.assertEqual(args, ascii(expected), out)
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check('utf8', [arg_utf8])
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for loc in POSIX_LOCALES:
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with self.subTest(LC_ALL=loc):
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check('utf8', [arg_utf8], LC_ALL=loc)
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if sys.platform == 'darwin' or support.is_android or VXWORKS:
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c_arg = arg_utf8
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elif sys.platform.startswith("aix"):
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c_arg = arg.decode('iso-8859-1')
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else:
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c_arg = arg_ascii
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for loc in POSIX_LOCALES:
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with self.subTest(LC_ALL=loc):
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check('utf8=0', [c_arg], LC_ALL=loc)
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def test_optim_level(self):
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# CPython: check that Py_Main() doesn't increment Py_OptimizeFlag
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# twice when -X utf8 requires to parse the configuration twice (when
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# the encoding changes after reading the configuration, the
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# configuration is read again with the new encoding).
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code = 'import sys; print(sys.flags.optimize)'
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out = self.get_output('-X', 'utf8', '-O', '-c', code)
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self.assertEqual(out, '1')
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out = self.get_output('-X', 'utf8', '-OO', '-c', code)
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self.assertEqual(out, '2')
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code = 'import sys; print(sys.flags.ignore_environment)'
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out = self.get_output('-X', 'utf8', '-E', '-c', code)
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self.assertEqual(out, '1')
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if __name__ == "__main__":
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unittest.main()
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