/usr/lib/python3.7/test/test_uu.py is in libpython3.7-testsuite 3.7.0~b3-1.
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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 | """
Tests for uu module.
Nick Mathewson
"""
import unittest
from test import support
import sys, os
import uu
import io
plaintext = b"The symbols on top of your keyboard are !@#$%^&*()_+|~\n"
encodedtext = b"""\
M5&AE('-Y;6)O;',@;VX@=&]P(&]F('EO=7(@:V5Y8F]A<F0@87)E("% (R0E
*7B8J*"E?*WQ^"@ """
# Stolen from io.py
class FakeIO(io.TextIOWrapper):
"""Text I/O implementation using an in-memory buffer.
Can be a used as a drop-in replacement for sys.stdin and sys.stdout.
"""
# XXX This is really slow, but fully functional
def __init__(self, initial_value="", encoding="utf-8",
errors="strict", newline="\n"):
super(FakeIO, self).__init__(io.BytesIO(),
encoding=encoding,
errors=errors,
newline=newline)
self._encoding = encoding
self._errors = errors
if initial_value:
if not isinstance(initial_value, str):
initial_value = str(initial_value)
self.write(initial_value)
self.seek(0)
def getvalue(self):
self.flush()
return self.buffer.getvalue().decode(self._encoding, self._errors)
def encodedtextwrapped(mode, filename, backtick=False):
if backtick:
res = (bytes("begin %03o %s\n" % (mode, filename), "ascii") +
encodedtext.replace(b' ', b'`') + b"\n`\nend\n")
else:
res = (bytes("begin %03o %s\n" % (mode, filename), "ascii") +
encodedtext + b"\n \nend\n")
return res
class UUTest(unittest.TestCase):
def test_encode(self):
inp = io.BytesIO(plaintext)
out = io.BytesIO()
uu.encode(inp, out, "t1")
self.assertEqual(out.getvalue(), encodedtextwrapped(0o666, "t1"))
inp = io.BytesIO(plaintext)
out = io.BytesIO()
uu.encode(inp, out, "t1", 0o644)
self.assertEqual(out.getvalue(), encodedtextwrapped(0o644, "t1"))
inp = io.BytesIO(plaintext)
out = io.BytesIO()
uu.encode(inp, out, "t1", backtick=True)
self.assertEqual(out.getvalue(), encodedtextwrapped(0o666, "t1", True))
with self.assertRaises(TypeError):
uu.encode(inp, out, "t1", 0o644, True)
def test_decode(self):
for backtick in True, False:
inp = io.BytesIO(encodedtextwrapped(0o666, "t1", backtick=backtick))
out = io.BytesIO()
uu.decode(inp, out)
self.assertEqual(out.getvalue(), plaintext)
inp = io.BytesIO(
b"UUencoded files may contain many lines,\n" +
b"even some that have 'begin' in them.\n" +
encodedtextwrapped(0o666, "t1", backtick=backtick)
)
out = io.BytesIO()
uu.decode(inp, out)
self.assertEqual(out.getvalue(), plaintext)
def test_truncatedinput(self):
inp = io.BytesIO(b"begin 644 t1\n" + encodedtext)
out = io.BytesIO()
try:
uu.decode(inp, out)
self.fail("No exception raised")
except uu.Error as e:
self.assertEqual(str(e), "Truncated input file")
def test_missingbegin(self):
inp = io.BytesIO(b"")
out = io.BytesIO()
try:
uu.decode(inp, out)
self.fail("No exception raised")
except uu.Error as e:
self.assertEqual(str(e), "No valid begin line found in input file")
def test_garbage_padding(self):
# Issue #22406
encodedtext1 = (
b"begin 644 file\n"
# length 1; bits 001100 111111 111111 111111
b"\x21\x2C\x5F\x5F\x5F\n"
b"\x20\n"
b"end\n"
)
encodedtext2 = (
b"begin 644 file\n"
# length 1; bits 001100 111111 111111 111111
b"\x21\x2C\x5F\x5F\x5F\n"
b"\x60\n"
b"end\n"
)
plaintext = b"\x33" # 00110011
for encodedtext in encodedtext1, encodedtext2:
with self.subTest("uu.decode()"):
inp = io.BytesIO(encodedtext)
out = io.BytesIO()
uu.decode(inp, out, quiet=True)
self.assertEqual(out.getvalue(), plaintext)
with self.subTest("uu_codec"):
import codecs
decoded = codecs.decode(encodedtext, "uu_codec")
self.assertEqual(decoded, plaintext)
class UUStdIOTest(unittest.TestCase):
def setUp(self):
self.stdin = sys.stdin
self.stdout = sys.stdout
def tearDown(self):
sys.stdin = self.stdin
sys.stdout = self.stdout
def test_encode(self):
sys.stdin = FakeIO(plaintext.decode("ascii"))
sys.stdout = FakeIO()
uu.encode("-", "-", "t1", 0o666)
self.assertEqual(sys.stdout.getvalue(),
encodedtextwrapped(0o666, "t1").decode("ascii"))
def test_decode(self):
sys.stdin = FakeIO(encodedtextwrapped(0o666, "t1").decode("ascii"))
sys.stdout = FakeIO()
uu.decode("-", "-")
stdout = sys.stdout
sys.stdout = self.stdout
sys.stdin = self.stdin
self.assertEqual(stdout.getvalue(), plaintext.decode("ascii"))
class UUFileTest(unittest.TestCase):
def _kill(self, f):
# close and remove file
if f is None:
return
try:
f.close()
except (SystemExit, KeyboardInterrupt):
raise
except:
pass
try:
os.unlink(f.name)
except (SystemExit, KeyboardInterrupt):
raise
except:
pass
def setUp(self):
self.tmpin = support.TESTFN + "i"
self.tmpout = support.TESTFN + "o"
def tearDown(self):
del self.tmpin
del self.tmpout
def test_encode(self):
fin = fout = None
try:
support.unlink(self.tmpin)
fin = open(self.tmpin, 'wb')
fin.write(plaintext)
fin.close()
fin = open(self.tmpin, 'rb')
fout = open(self.tmpout, 'wb')
uu.encode(fin, fout, self.tmpin, mode=0o644)
fin.close()
fout.close()
fout = open(self.tmpout, 'rb')
s = fout.read()
fout.close()
self.assertEqual(s, encodedtextwrapped(0o644, self.tmpin))
# in_file and out_file as filenames
uu.encode(self.tmpin, self.tmpout, self.tmpin, mode=0o644)
fout = open(self.tmpout, 'rb')
s = fout.read()
fout.close()
self.assertEqual(s, encodedtextwrapped(0o644, self.tmpin))
finally:
self._kill(fin)
self._kill(fout)
def test_decode(self):
f = None
try:
support.unlink(self.tmpin)
f = open(self.tmpin, 'wb')
f.write(encodedtextwrapped(0o644, self.tmpout))
f.close()
f = open(self.tmpin, 'rb')
uu.decode(f)
f.close()
f = open(self.tmpout, 'rb')
s = f.read()
f.close()
self.assertEqual(s, plaintext)
# XXX is there an xp way to verify the mode?
finally:
self._kill(f)
def test_decode_filename(self):
f = None
try:
support.unlink(self.tmpin)
f = open(self.tmpin, 'wb')
f.write(encodedtextwrapped(0o644, self.tmpout))
f.close()
uu.decode(self.tmpin)
f = open(self.tmpout, 'rb')
s = f.read()
f.close()
self.assertEqual(s, plaintext)
finally:
self._kill(f)
def test_decodetwice(self):
# Verify that decode() will refuse to overwrite an existing file
f = None
try:
f = io.BytesIO(encodedtextwrapped(0o644, self.tmpout))
f = open(self.tmpin, 'rb')
uu.decode(f)
f.close()
f = open(self.tmpin, 'rb')
self.assertRaises(uu.Error, uu.decode, f)
f.close()
finally:
self._kill(f)
if __name__=="__main__":
unittest.main()
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