/usr/lib/python2.7/test/test_univnewlines.py is in libpython2.7-testsuite 2.7.6-8ubuntu0.5.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 | # Tests universal newline support for both reading and parsing files.
# NOTE: this file tests the new `io` library backported from Python 3.x.
# Similar tests for the builtin file object can be found in test_univnewlines2k.py.
from __future__ import print_function
from __future__ import unicode_literals
import io
import _pyio as pyio
import unittest
import os
import sys
from test import test_support as support
if not hasattr(sys.stdin, 'newlines'):
raise unittest.SkipTest(
"This Python does not have universal newline support")
FATX = 'x' * (2**14)
DATA_TEMPLATE = [
"line1=1",
"line2='this is a very long line designed to go past any default " +
"buffer limits that exist in io.py but we also want to test " +
"the uncommon case, naturally.'",
"def line3():pass",
"line4 = '%s'" % FATX,
]
DATA_LF = "\n".join(DATA_TEMPLATE) + "\n"
DATA_CR = "\r".join(DATA_TEMPLATE) + "\r"
DATA_CRLF = "\r\n".join(DATA_TEMPLATE) + "\r\n"
# Note that DATA_MIXED also tests the ability to recognize a lone \r
# before end-of-file.
DATA_MIXED = "\n".join(DATA_TEMPLATE) + "\r"
DATA_SPLIT = [x + "\n" for x in DATA_TEMPLATE]
class TestGenericUnivNewlines(unittest.TestCase):
# use a class variable DATA to define the data to write to the file
# and a class variable NEWLINE to set the expected newlines value
READMODE = 'r'
WRITEMODE = 'wb'
def setUp(self):
data = self.DATA
if "b" in self.WRITEMODE:
data = data.encode("ascii")
with self.open(support.TESTFN, self.WRITEMODE) as fp:
fp.write(data)
def tearDown(self):
try:
os.unlink(support.TESTFN)
except:
pass
def test_read(self):
with self.open(support.TESTFN, self.READMODE) as fp:
data = fp.read()
self.assertEqual(data, DATA_LF)
self.assertEqual(set(fp.newlines), set(self.NEWLINE))
def test_readlines(self):
with self.open(support.TESTFN, self.READMODE) as fp:
data = fp.readlines()
self.assertEqual(data, DATA_SPLIT)
self.assertEqual(set(fp.newlines), set(self.NEWLINE))
def test_readline(self):
with self.open(support.TESTFN, self.READMODE) as fp:
data = []
d = fp.readline()
while d:
data.append(d)
d = fp.readline()
self.assertEqual(data, DATA_SPLIT)
self.assertEqual(set(fp.newlines), set(self.NEWLINE))
def test_seek(self):
with self.open(support.TESTFN, self.READMODE) as fp:
fp.readline()
pos = fp.tell()
data = fp.readlines()
self.assertEqual(data, DATA_SPLIT[1:])
fp.seek(pos)
data = fp.readlines()
self.assertEqual(data, DATA_SPLIT[1:])
class TestCRNewlines(TestGenericUnivNewlines):
NEWLINE = '\r'
DATA = DATA_CR
class TestLFNewlines(TestGenericUnivNewlines):
NEWLINE = '\n'
DATA = DATA_LF
class TestCRLFNewlines(TestGenericUnivNewlines):
NEWLINE = '\r\n'
DATA = DATA_CRLF
def test_tell(self):
with self.open(support.TESTFN, self.READMODE) as fp:
self.assertEqual(repr(fp.newlines), repr(None))
data = fp.readline()
pos = fp.tell()
self.assertEqual(repr(fp.newlines), repr(self.NEWLINE))
class TestMixedNewlines(TestGenericUnivNewlines):
NEWLINE = ('\r', '\n')
DATA = DATA_MIXED
def test_main():
base_tests = (TestCRNewlines,
TestLFNewlines,
TestCRLFNewlines,
TestMixedNewlines)
tests = []
# Test the C and Python implementations.
for test in base_tests:
class CTest(test):
open = io.open
CTest.__name__ = str("C" + test.__name__)
class PyTest(test):
open = staticmethod(pyio.open)
PyTest.__name__ = str("Py" + test.__name__)
tests.append(CTest)
tests.append(PyTest)
support.run_unittest(*tests)
if __name__ == '__main__':
test_main()
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