mirror of https://github.com/python/cpython
340 lines
12 KiB
Python
340 lines
12 KiB
Python
# -*- coding: utf-8 -*-
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import unittest
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from test.support import script_helper, captured_stdout, requires_subprocess
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from test.support.os_helper import TESTFN, unlink, rmtree
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from test.support.import_helper import unload
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import importlib
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import os
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import sys
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import subprocess
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import tempfile
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class MiscSourceEncodingTest(unittest.TestCase):
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def test_import_encoded_module(self):
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from test.encoded_modules import test_strings
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# Make sure we're actually testing something
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self.assertGreaterEqual(len(test_strings), 1)
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for modname, encoding, teststr in test_strings:
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mod = importlib.import_module('test.encoded_modules.'
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'module_' + modname)
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self.assertEqual(teststr, mod.test)
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def test_compilestring(self):
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# see #1882
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c = compile(b"\n# coding: utf-8\nu = '\xc3\xb3'\n", "dummy", "exec")
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d = {}
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exec(c, d)
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self.assertEqual(d['u'], '\xf3')
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def test_issue2301(self):
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try:
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compile(b"# coding: cp932\nprint '\x94\x4e'", "dummy", "exec")
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except SyntaxError as v:
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self.assertEqual(v.text.rstrip('\n'), "print '\u5e74'")
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else:
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self.fail()
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def test_issue4626(self):
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c = compile("# coding=latin-1\n\u00c6 = '\u00c6'", "dummy", "exec")
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d = {}
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exec(c, d)
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self.assertEqual(d['\xc6'], '\xc6')
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def test_issue3297(self):
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c = compile("a, b = '\U0001010F', '\\U0001010F'", "dummy", "exec")
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d = {}
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exec(c, d)
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self.assertEqual(d['a'], d['b'])
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self.assertEqual(len(d['a']), len(d['b']))
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self.assertEqual(ascii(d['a']), ascii(d['b']))
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def test_issue7820(self):
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# Ensure that check_bom() restores all bytes in the right order if
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# check_bom() fails in pydebug mode: a buffer starts with the first
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# byte of a valid BOM, but next bytes are different
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# one byte in common with the UTF-16-LE BOM
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self.assertRaises(SyntaxError, eval, b'\xff\x20')
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# one byte in common with the UTF-8 BOM
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self.assertRaises(SyntaxError, eval, b'\xef\x20')
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# two bytes in common with the UTF-8 BOM
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self.assertRaises(SyntaxError, eval, b'\xef\xbb\x20')
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@requires_subprocess()
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def test_20731(self):
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sub = subprocess.Popen([sys.executable,
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os.path.join(os.path.dirname(__file__),
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'coding20731.py')],
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stderr=subprocess.PIPE)
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err = sub.communicate()[1]
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self.assertEqual(sub.returncode, 0)
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self.assertNotIn(b'SyntaxError', err)
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def test_error_message(self):
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compile(b'# -*- coding: iso-8859-15 -*-\n', 'dummy', 'exec')
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compile(b'\xef\xbb\xbf\n', 'dummy', 'exec')
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compile(b'\xef\xbb\xbf# -*- coding: utf-8 -*-\n', 'dummy', 'exec')
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with self.assertRaisesRegex(SyntaxError, 'fake'):
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compile(b'# -*- coding: fake -*-\n', 'dummy', 'exec')
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with self.assertRaisesRegex(SyntaxError, 'iso-8859-15'):
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compile(b'\xef\xbb\xbf# -*- coding: iso-8859-15 -*-\n',
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'dummy', 'exec')
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with self.assertRaisesRegex(SyntaxError, 'BOM'):
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compile(b'\xef\xbb\xbf# -*- coding: iso-8859-15 -*-\n',
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'dummy', 'exec')
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with self.assertRaisesRegex(SyntaxError, 'fake'):
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compile(b'\xef\xbb\xbf# -*- coding: fake -*-\n', 'dummy', 'exec')
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with self.assertRaisesRegex(SyntaxError, 'BOM'):
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compile(b'\xef\xbb\xbf# -*- coding: fake -*-\n', 'dummy', 'exec')
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def test_bad_coding(self):
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module_name = 'bad_coding'
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self.verify_bad_module(module_name)
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def test_bad_coding2(self):
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module_name = 'bad_coding2'
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self.verify_bad_module(module_name)
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def verify_bad_module(self, module_name):
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self.assertRaises(SyntaxError, __import__, 'test.' + module_name)
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path = os.path.dirname(__file__)
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filename = os.path.join(path, module_name + '.py')
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with open(filename, "rb") as fp:
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bytes = fp.read()
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self.assertRaises(SyntaxError, compile, bytes, filename, 'exec')
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def test_exec_valid_coding(self):
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d = {}
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exec(b'# coding: cp949\na = "\xaa\xa7"\n', d)
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self.assertEqual(d['a'], '\u3047')
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def test_file_parse(self):
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# issue1134: all encodings outside latin-1 and utf-8 fail on
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# multiline strings and long lines (>512 columns)
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unload(TESTFN)
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filename = TESTFN + ".py"
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f = open(filename, "w", encoding="cp1252")
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sys.path.insert(0, os.curdir)
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try:
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with f:
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f.write("# -*- coding: cp1252 -*-\n")
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f.write("'''A short string\n")
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f.write("'''\n")
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f.write("'A very long string %s'\n" % ("X" * 1000))
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importlib.invalidate_caches()
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__import__(TESTFN)
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finally:
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del sys.path[0]
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unlink(filename)
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unlink(filename + "c")
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unlink(filename + "o")
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unload(TESTFN)
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rmtree('__pycache__')
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def test_error_from_string(self):
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# See http://bugs.python.org/issue6289
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input = "# coding: ascii\n\N{SNOWMAN}".encode('utf-8')
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with self.assertRaises(SyntaxError) as c:
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compile(input, "<string>", "exec")
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expected = "'ascii' codec can't decode byte 0xe2 in position 16: " \
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"ordinal not in range(128)"
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self.assertTrue(c.exception.args[0].startswith(expected),
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msg=c.exception.args[0])
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def test_file_parse_error_multiline(self):
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# gh96611:
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with open(TESTFN, "wb") as fd:
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fd.write(b'print("""\n\xb1""")\n')
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try:
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retcode, stdout, stderr = script_helper.assert_python_failure(TESTFN)
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self.assertGreater(retcode, 0)
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self.assertIn(b"Non-UTF-8 code starting with '\\xb1'", stderr)
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finally:
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os.unlink(TESTFN)
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def test_tokenizer_fstring_warning_in_first_line(self):
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source = "0b1and 2"
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with open(TESTFN, "w") as fd:
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fd.write("{}".format(source))
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try:
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retcode, stdout, stderr = script_helper.assert_python_ok(TESTFN)
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self.assertIn(b"SyntaxWarning: invalid binary litera", stderr)
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self.assertEqual(stderr.count(source.encode()), 1)
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finally:
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os.unlink(TESTFN)
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class AbstractSourceEncodingTest:
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def test_default_coding(self):
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src = (b'print(ascii("\xc3\xa4"))\n')
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self.check_script_output(src, br"'\xe4'")
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def test_first_coding_line(self):
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src = (b'#coding:iso8859-15\n'
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b'print(ascii("\xc3\xa4"))\n')
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self.check_script_output(src, br"'\xc3\u20ac'")
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def test_second_coding_line(self):
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src = (b'#\n'
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b'#coding:iso8859-15\n'
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b'print(ascii("\xc3\xa4"))\n')
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self.check_script_output(src, br"'\xc3\u20ac'")
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def test_third_coding_line(self):
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# Only first two lines are tested for a magic comment.
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src = (b'#\n'
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b'#\n'
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b'#coding:iso8859-15\n'
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b'print(ascii("\xc3\xa4"))\n')
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self.check_script_output(src, br"'\xe4'")
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def test_double_coding_line(self):
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# If the first line matches the second line is ignored.
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src = (b'#coding:iso8859-15\n'
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b'#coding:latin1\n'
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b'print(ascii("\xc3\xa4"))\n')
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self.check_script_output(src, br"'\xc3\u20ac'")
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def test_double_coding_same_line(self):
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src = (b'#coding:iso8859-15 coding:latin1\n'
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b'print(ascii("\xc3\xa4"))\n')
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self.check_script_output(src, br"'\xc3\u20ac'")
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def test_first_non_utf8_coding_line(self):
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src = (b'#coding:iso-8859-15 \xa4\n'
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b'print(ascii("\xc3\xa4"))\n')
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self.check_script_output(src, br"'\xc3\u20ac'")
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def test_second_non_utf8_coding_line(self):
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src = (b'\n'
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b'#coding:iso-8859-15 \xa4\n'
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b'print(ascii("\xc3\xa4"))\n')
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self.check_script_output(src, br"'\xc3\u20ac'")
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def test_utf8_bom(self):
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src = (b'\xef\xbb\xbfprint(ascii("\xc3\xa4"))\n')
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self.check_script_output(src, br"'\xe4'")
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def test_utf8_bom_and_utf8_coding_line(self):
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src = (b'\xef\xbb\xbf#coding:utf-8\n'
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b'print(ascii("\xc3\xa4"))\n')
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self.check_script_output(src, br"'\xe4'")
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def test_crlf(self):
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src = (b'print(ascii("""\r\n"""))\n')
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out = self.check_script_output(src, br"'\n'")
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def test_crcrlf(self):
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src = (b'print(ascii("""\r\r\n"""))\n')
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out = self.check_script_output(src, br"'\n\n'")
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def test_crcrcrlf(self):
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src = (b'print(ascii("""\r\r\r\n"""))\n')
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out = self.check_script_output(src, br"'\n\n\n'")
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def test_crcrcrlf2(self):
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src = (b'#coding:iso-8859-1\n'
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b'print(ascii("""\r\r\r\n"""))\n')
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out = self.check_script_output(src, br"'\n\n\n'")
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class UTF8ValidatorTest(unittest.TestCase):
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@unittest.skipIf(not sys.platform.startswith("linux"),
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"Too slow to run on non-Linux platforms")
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def test_invalid_utf8(self):
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# This is a port of test_utf8_decode_invalid_sequences in
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# test_unicode.py to exercise the separate utf8 validator in
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# Parser/tokenizer.c used when reading source files.
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# That file is written using low-level C file I/O, so the only way to
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# test it is to write actual files to disk.
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# Each example is put inside a string at the top of the file so
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# it's an otherwise valid Python source file. Put some newlines
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# beforehand so we can assert that the error is reported on the
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# correct line.
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template = b'\n\n\n"%s"\n'
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fn = TESTFN
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self.addCleanup(unlink, fn)
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def check(content):
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with open(fn, 'wb') as fp:
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fp.write(template % content)
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rc, stdout, stderr = script_helper.assert_python_failure(fn)
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# We want to assert that the python subprocess failed gracefully,
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# not via a signal.
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self.assertGreaterEqual(rc, 1)
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self.assertIn(b"Non-UTF-8 code starting with", stderr)
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self.assertIn(b"on line 4", stderr)
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# continuation bytes in a sequence of 2, 3, or 4 bytes
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continuation_bytes = [bytes([x]) for x in range(0x80, 0xC0)]
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# start bytes of a 2-byte sequence equivalent to code points < 0x7F
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invalid_2B_seq_start_bytes = [bytes([x]) for x in range(0xC0, 0xC2)]
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# start bytes of a 4-byte sequence equivalent to code points > 0x10FFFF
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invalid_4B_seq_start_bytes = [bytes([x]) for x in range(0xF5, 0xF8)]
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invalid_start_bytes = (
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continuation_bytes + invalid_2B_seq_start_bytes +
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invalid_4B_seq_start_bytes + [bytes([x]) for x in range(0xF7, 0x100)]
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)
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for byte in invalid_start_bytes:
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check(byte)
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for sb in invalid_2B_seq_start_bytes:
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for cb in continuation_bytes:
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check(sb + cb)
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for sb in invalid_4B_seq_start_bytes:
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for cb1 in continuation_bytes[:3]:
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for cb3 in continuation_bytes[:3]:
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check(sb+cb1+b'\x80'+cb3)
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for cb in [bytes([x]) for x in range(0x80, 0xA0)]:
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check(b'\xE0'+cb+b'\x80')
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check(b'\xE0'+cb+b'\xBF')
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# surrogates
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for cb in [bytes([x]) for x in range(0xA0, 0xC0)]:
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check(b'\xED'+cb+b'\x80')
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check(b'\xED'+cb+b'\xBF')
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for cb in [bytes([x]) for x in range(0x80, 0x90)]:
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check(b'\xF0'+cb+b'\x80\x80')
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check(b'\xF0'+cb+b'\xBF\xBF')
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for cb in [bytes([x]) for x in range(0x90, 0xC0)]:
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check(b'\xF4'+cb+b'\x80\x80')
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check(b'\xF4'+cb+b'\xBF\xBF')
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class BytesSourceEncodingTest(AbstractSourceEncodingTest, unittest.TestCase):
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def check_script_output(self, src, expected):
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with captured_stdout() as stdout:
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exec(src)
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out = stdout.getvalue().encode('latin1')
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self.assertEqual(out.rstrip(), expected)
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class FileSourceEncodingTest(AbstractSourceEncodingTest, unittest.TestCase):
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def check_script_output(self, src, expected):
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with tempfile.TemporaryDirectory() as tmpd:
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fn = os.path.join(tmpd, 'test.py')
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with open(fn, 'wb') as fp:
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fp.write(src)
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res = script_helper.assert_python_ok(fn)
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self.assertEqual(res.out.rstrip(), expected)
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if __name__ == "__main__":
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unittest.main()
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