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"""
Tests for uu module.
Nick Mathewson
"""
import unittest
from test import test_support as support
import cStringIO
import sys
import uu
import io
plaintext = "The smooth-scaled python crept over the sleeping dog\n"
encodedtext = """\
M5&AE('-M;V]T:\"US8V%L960@<'ET:&]N(&-R97!T(&]V97(@=&AE('-L965P
(:6YG(&1O9PH """
encodedtextwrapped = "begin %03o %s\n" + encodedtext.replace("%", "%%") + "\n \nend\n"
class UUTest(unittest.TestCase):
def test_encode(self):
inp = cStringIO.StringIO(plaintext)
out = cStringIO.StringIO()
uu.encode(inp, out, "t1")
self.assertEqual(out.getvalue(), encodedtextwrapped % (0666, "t1"))
inp = cStringIO.StringIO(plaintext)
out = cStringIO.StringIO()
uu.encode(inp, out, "t1", 0644)
self.assertEqual(out.getvalue(), encodedtextwrapped % (0644, "t1"))
def test_decode(self):
inp = cStringIO.StringIO(encodedtextwrapped % (0666, "t1"))
out = cStringIO.StringIO()
uu.decode(inp, out)
self.assertEqual(out.getvalue(), plaintext)
inp = cStringIO.StringIO(
"UUencoded files may contain many lines,\n" +
"even some that have 'begin' in them.\n" +
encodedtextwrapped % (0666, "t1")
)
out = cStringIO.StringIO()
uu.decode(inp, out)
self.assertEqual(out.getvalue(), plaintext)
def test_truncatedinput(self):
inp = cStringIO.StringIO("begin 644 t1\n" + encodedtext)
out = cStringIO.StringIO()
try:
uu.decode(inp, out)
self.fail("No exception raised")
except uu.Error, e:
self.assertEqual(str(e), "Truncated input file")
def test_missingbegin(self):
inp = cStringIO.StringIO("")
out = cStringIO.StringIO()
try:
uu.decode(inp, out)
self.fail("No exception raised")
except uu.Error, e:
self.assertEqual(str(e), "No valid begin line found in input file")
def test_garbage_padding(self):
# Issue #22406
encodedtext = (
"begin 644 file\n"
# length 1; bits 001100 111111 111111 111111
"\x21\x2C\x5F\x5F\x5F\n"
"\x20\n"
"end\n"
)
plaintext = "\x33" # 00110011
inp = cStringIO.StringIO(encodedtext)
out = cStringIO.StringIO()
uu.decode(inp, out, quiet=True)
self.assertEqual(out.getvalue(), plaintext)
import codecs
decoded = codecs.decode(encodedtext, "uu_codec")
self.assertEqual(decoded, plaintext)
def test_newlines_escaped(self):
# Test newlines are escaped with uu.encode
inp = io.BytesIO(plaintext)
out = io.BytesIO()
filename = "test.txt\n\roverflow.txt"
safefilename = b"test.txt\\n\\roverflow.txt"
uu.encode(inp, out, filename)
self.assertIn(safefilename, out.getvalue())
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 = cStringIO.StringIO(plaintext)
sys.stdout = cStringIO.StringIO()
uu.encode("-", "-", "t1", 0666)
self.assertEqual(
sys.stdout.getvalue(),
encodedtextwrapped % (0666, "t1")
)
def test_decode(self):
sys.stdin = cStringIO.StringIO(encodedtextwrapped % (0666, "t1"))
sys.stdout = cStringIO.StringIO()
uu.decode("-", "-")
self.assertEqual(sys.stdout.getvalue(), plaintext)
class UUFileTest(unittest.TestCase):
def setUp(self):
self.tmpin = support.TESTFN + "i"
self.tmpout = support.TESTFN + "o"
self.addCleanup(support.unlink, self.tmpin)
self.addCleanup(support.unlink, self.tmpout)
def test_encode(self):
with open(self.tmpin, 'wb') as fin:
fin.write(plaintext)
with open(self.tmpin, 'rb') as fin:
with open(self.tmpout, 'w') as fout:
uu.encode(fin, fout, self.tmpin, mode=0o644)
with open(self.tmpout, 'r') as fout:
s = fout.read()
self.assertEqual(s, encodedtextwrapped % (0o644, self.tmpin))
# in_file and out_file as filenames
uu.encode(self.tmpin, self.tmpout, self.tmpin, mode=0o644)
with open(self.tmpout, 'r') as fout:
s = fout.read()
self.assertEqual(s, encodedtextwrapped % (0o644, self.tmpin))
def test_decode(self):
with open(self.tmpin, 'w') as f:
f.write(encodedtextwrapped % (0o644, self.tmpout))
with open(self.tmpin, 'r') as f:
uu.decode(f)
with open(self.tmpout, 'r') as f:
s = f.read()
self.assertEqual(s, plaintext)
# XXX is there an xp way to verify the mode?
def test_decode_filename(self):
with open(self.tmpin, 'w') as f:
f.write(encodedtextwrapped % (0o644, self.tmpout))
uu.decode(self.tmpin)
with open(self.tmpout, 'r') as f:
s = f.read()
self.assertEqual(s, plaintext)
def test_decodetwice(self):
# Verify that decode() will refuse to overwrite an existing file
with open(self.tmpin, 'wb') as f:
f.write(encodedtextwrapped % (0o644, self.tmpout))
with open(self.tmpin, 'r') as f:
uu.decode(f)
with open(self.tmpin, 'r') as f:
self.assertRaises(uu.Error, uu.decode, f)
def test_main():
support.run_unittest(UUTest, UUStdIOTest, UUFileTest)
if __name__=="__main__":
test_main()
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