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"""
Tests for uu module.
Nick Mathewson
"""
import unittest
from test import test_support
import sys, os, uu, cStringIO
import uu
from StringIO import StringIO
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 thrown")
except uu.Error as 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 thrown")
except uu.Error as e:
self.assertEqual(str(e), "No valid begin line found in input file")
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 _kill(self, f):
# close and remove file
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 = test_support.TESTFN + "i"
self.tmpout = test_support.TESTFN + "o"
def tearDown(self):
del self.tmpin
del self.tmpout
def test_encode(self):
try:
fin = open(self.tmpin, 'wb')
fin.write(plaintext)
fin.close()
fin = open(self.tmpin, 'rb')
fout = open(self.tmpout, 'w')
uu.encode(fin, fout, self.tmpin, mode=0644)
fin.close()
fout.close()
fout = open(self.tmpout, 'r')
s = fout.read()
fout.close()
self.assertEqual(s, encodedtextwrapped % (0644, self.tmpin))
# in_file and out_file as filenames
uu.encode(self.tmpin, self.tmpout, self.tmpin, mode=0644)
fout = open(self.tmpout, 'r')
s = fout.read()
fout.close()
self.assertEqual(s, encodedtextwrapped % (0644, self.tmpin))
finally:
self._kill(fin)
self._kill(fout)
def test_decode(self):
try:
f = open(self.tmpin, 'w')
f.write(encodedtextwrapped % (0644, self.tmpout))
f.close()
f = open(self.tmpin, 'r')
uu.decode(f)
f.close()
f = open(self.tmpout, 'r')
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_decodetwice(self):
# Verify that decode() will refuse to overwrite an existing file
try:
f = cStringIO.StringIO(encodedtextwrapped % (0644, self.tmpout))
f = open(self.tmpin, 'r')
uu.decode(f)
f.close()
f = open(self.tmpin, 'r')
self.assertRaises(uu.Error, uu.decode, f)
f.close()
finally:
self._kill(f)
def test_main():
test_support.run_unittest(UUTest, UUStdIOTest, UUFileTest)
if __name__=="__main__":
test_main()
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