mirror of
https://github.com/python/cpython.git
synced 2024-12-04 23:34:42 +08:00
254 lines
7.1 KiB
Python
254 lines
7.1 KiB
Python
|
import sys
|
||
|
|
import os
|
||
|
|
import shutil
|
||
|
|
|
||
|
|
import unittest
|
||
|
|
import tarfile
|
||
|
|
|
||
|
|
from test import test_support
|
||
|
|
|
||
|
|
# Check for our compression modules.
|
||
|
|
try:
|
||
|
|
import gzip
|
||
|
|
except ImportError:
|
||
|
|
gzip = None
|
||
|
|
try:
|
||
|
|
import bz2
|
||
|
|
except ImportError:
|
||
|
|
bz2 = None
|
||
|
|
|
||
|
|
def path(path):
|
||
|
|
return test_support.findfile(path)
|
||
|
|
|
||
|
|
testtar = path("testtar.tar")
|
||
|
|
tempdir = path("testtar.dir")
|
||
|
|
tempname = path("testtar.tmp")
|
||
|
|
membercount = 10
|
||
|
|
|
||
|
|
def tarname(comp=""):
|
||
|
|
if not comp:
|
||
|
|
return testtar
|
||
|
|
return "%s.%s" % (testtar, comp)
|
||
|
|
|
||
|
|
def dirname():
|
||
|
|
if not os.path.exists(tempdir):
|
||
|
|
os.mkdir(tempdir)
|
||
|
|
return tempdir
|
||
|
|
|
||
|
|
def tmpname():
|
||
|
|
return tempname
|
||
|
|
|
||
|
|
|
||
|
|
class BaseTest(unittest.TestCase):
|
||
|
|
comp = ''
|
||
|
|
mode = 'r'
|
||
|
|
sep = ':'
|
||
|
|
|
||
|
|
def setUp(self):
|
||
|
|
mode = self.mode + self.sep + self.comp
|
||
|
|
self.tar = tarfile.open(tarname(self.comp), mode)
|
||
|
|
|
||
|
|
def tearDown(self):
|
||
|
|
self.tar.close()
|
||
|
|
|
||
|
|
class ReadTest(BaseTest):
|
||
|
|
|
||
|
|
def test(self):
|
||
|
|
"""Test member extraction.
|
||
|
|
"""
|
||
|
|
members = 0
|
||
|
|
for tarinfo in self.tar:
|
||
|
|
members += 1
|
||
|
|
if not tarinfo.isreg():
|
||
|
|
continue
|
||
|
|
f = self.tar.extractfile(tarinfo)
|
||
|
|
self.assert_(len(f.read()) == tarinfo.size,
|
||
|
|
"size read does not match expected size")
|
||
|
|
f.close()
|
||
|
|
|
||
|
|
self.assert_(members == membercount,
|
||
|
|
"could not find all members")
|
||
|
|
|
||
|
|
def test_sparse(self):
|
||
|
|
"""Test sparse member extraction.
|
||
|
|
"""
|
||
|
|
if self.sep != "|":
|
||
|
|
f1 = self.tar.extractfile("S-SPARSE")
|
||
|
|
f2 = self.tar.extractfile("S-SPARSE-WITH-NULLS")
|
||
|
|
self.assert_(f1.read() == f2.read(),
|
||
|
|
"_FileObject failed on sparse file member")
|
||
|
|
|
||
|
|
def test_readlines(self):
|
||
|
|
"""Test readlines() method of _FileObject.
|
||
|
|
"""
|
||
|
|
if self.sep != "|":
|
||
|
|
filename = "0-REGTYPE-TEXT"
|
||
|
|
self.tar.extract(filename, dirname())
|
||
|
|
lines1 = file(os.path.join(dirname(), filename), "r").readlines()
|
||
|
|
lines2 = self.tar.extractfile(filename).readlines()
|
||
|
|
self.assert_(lines1 == lines2,
|
||
|
|
"_FileObject.readline() does not work correctly")
|
||
|
|
|
||
|
|
def test_seek(self):
|
||
|
|
"""Test seek() method of _FileObject, incl. random reading.
|
||
|
|
"""
|
||
|
|
if self.sep != "|":
|
||
|
|
filename = "0-REGTYPE"
|
||
|
|
self.tar.extract(filename, dirname())
|
||
|
|
data = file(os.path.join(dirname(), filename), "rb").read()
|
||
|
|
|
||
|
|
tarinfo = self.tar.getmember(filename)
|
||
|
|
fobj = self.tar.extractfile(tarinfo)
|
||
|
|
|
||
|
|
text = fobj.read()
|
||
|
|
fobj.seek(0)
|
||
|
|
self.assert_(0 == fobj.tell(),
|
||
|
|
"seek() to file's start failed")
|
||
|
|
fobj.seek(2048, 0)
|
||
|
|
self.assert_(2048 == fobj.tell(),
|
||
|
|
"seek() to absolute position failed")
|
||
|
|
fobj.seek(-1024, 1)
|
||
|
|
self.assert_(1024 == fobj.tell(),
|
||
|
|
"seek() to negative relative position failed")
|
||
|
|
fobj.seek(1024, 1)
|
||
|
|
self.assert_(2048 == fobj.tell(),
|
||
|
|
"seek() to positive relative position failed")
|
||
|
|
s = fobj.read(10)
|
||
|
|
self.assert_(s == data[2048:2058],
|
||
|
|
"read() after seek failed")
|
||
|
|
fobj.seek(0, 2)
|
||
|
|
self.assert_(tarinfo.size == fobj.tell(),
|
||
|
|
"seek() to file's end failed")
|
||
|
|
self.assert_(fobj.read() == "",
|
||
|
|
"read() at file's end did not return empty string")
|
||
|
|
fobj.seek(-tarinfo.size, 2)
|
||
|
|
self.assert_(0 == fobj.tell(),
|
||
|
|
"relative seek() to file's start failed")
|
||
|
|
fobj.seek(512)
|
||
|
|
s1 = fobj.readlines()
|
||
|
|
fobj.seek(512)
|
||
|
|
s2 = fobj.readlines()
|
||
|
|
self.assert_(s1 == s2,
|
||
|
|
"readlines() after seek failed")
|
||
|
|
fobj.close()
|
||
|
|
|
||
|
|
class ReadStreamTest(ReadTest):
|
||
|
|
sep = "|"
|
||
|
|
|
||
|
|
def test(self):
|
||
|
|
"""Test member extraction, and for StreamError when
|
||
|
|
seeking backwards.
|
||
|
|
"""
|
||
|
|
ReadTest.test(self)
|
||
|
|
tarinfo = self.tar.getmembers()[0]
|
||
|
|
f = self.tar.extractfile(tarinfo)
|
||
|
|
self.assertRaises(tarfile.StreamError, f.read)
|
||
|
|
|
||
|
|
def test_stream(self):
|
||
|
|
"""Compare the normal tar and the stream tar.
|
||
|
|
"""
|
||
|
|
stream = self.tar
|
||
|
|
tar = tarfile.open(tarname(), 'r')
|
||
|
|
|
||
|
|
while 1:
|
||
|
|
t1 = tar.next()
|
||
|
|
t2 = stream.next()
|
||
|
|
if t1 is None:
|
||
|
|
break
|
||
|
|
self.assert_(t2 is not None, "stream.next() failed.")
|
||
|
|
|
||
|
|
if t2.islnk() or t2.issym():
|
||
|
|
self.assertRaises(tarfile.StreamError, stream.extractfile, t2)
|
||
|
|
continue
|
||
|
|
v1 = tar.extractfile(t1)
|
||
|
|
v2 = stream.extractfile(t2)
|
||
|
|
if v1 is None:
|
||
|
|
continue
|
||
|
|
self.assert_(v2 is not None, "stream.extractfile() failed")
|
||
|
|
self.assert_(v1.read() == v2.read(), "stream extraction failed")
|
||
|
|
|
||
|
|
stream.close()
|
||
|
|
|
||
|
|
class WriteTest(BaseTest):
|
||
|
|
mode = 'w'
|
||
|
|
|
||
|
|
def setUp(self):
|
||
|
|
mode = self.mode + self.sep + self.comp
|
||
|
|
self.src = tarfile.open(tarname(self.comp), 'r')
|
||
|
|
self.dst = tarfile.open(tmpname(), mode)
|
||
|
|
|
||
|
|
def tearDown(self):
|
||
|
|
self.src.close()
|
||
|
|
self.dst.close()
|
||
|
|
|
||
|
|
def test_posix(self):
|
||
|
|
self.dst.posix = 1
|
||
|
|
self._test()
|
||
|
|
|
||
|
|
def test_nonposix(self):
|
||
|
|
self.dst.posix = 0
|
||
|
|
self._test()
|
||
|
|
|
||
|
|
def _test(self):
|
||
|
|
for tarinfo in self.src:
|
||
|
|
if not tarinfo.isreg():
|
||
|
|
continue
|
||
|
|
f = self.src.extractfile(tarinfo)
|
||
|
|
if self.dst.posix and len(tarinfo.name) > tarfile.LENGTH_NAME:
|
||
|
|
self.assertRaises(ValueError, self.dst.addfile,
|
||
|
|
tarinfo, f)
|
||
|
|
else:
|
||
|
|
self.dst.addfile(tarinfo, f)
|
||
|
|
|
||
|
|
class WriteStreamTest(WriteTest):
|
||
|
|
sep = '|'
|
||
|
|
|
||
|
|
# Gzip TestCases
|
||
|
|
class ReadTestGzip(ReadTest):
|
||
|
|
comp = "gz"
|
||
|
|
class ReadStreamTestGzip(ReadStreamTest):
|
||
|
|
comp = "gz"
|
||
|
|
class WriteTestGzip(WriteTest):
|
||
|
|
comp = "gz"
|
||
|
|
class WriteStreamTestGzip(WriteStreamTest):
|
||
|
|
comp = "gz"
|
||
|
|
|
||
|
|
if bz2:
|
||
|
|
# Bzip2 TestCases
|
||
|
|
class ReadTestBzip2(ReadTestGzip):
|
||
|
|
comp = "bz2"
|
||
|
|
class ReadStreamTestBzip2(ReadStreamTestGzip):
|
||
|
|
comp = "bz2"
|
||
|
|
class WriteTestBzip2(WriteTest):
|
||
|
|
comp = "bz2"
|
||
|
|
class WriteStreamTestBzip2(WriteStreamTestGzip):
|
||
|
|
comp = "bz2"
|
||
|
|
|
||
|
|
# If importing gzip failed, discard the Gzip TestCases.
|
||
|
|
if not gzip:
|
||
|
|
del ReadTestGzip
|
||
|
|
del ReadStreamTestGzip
|
||
|
|
del WriteTestGzip
|
||
|
|
del WriteStreamTestGzip
|
||
|
|
|
||
|
|
if __name__ == "__main__":
|
||
|
|
if gzip:
|
||
|
|
# create testtar.tar.gz
|
||
|
|
gzip.open(tarname("gz"), "wb").write(file(tarname(), "rb").read())
|
||
|
|
if bz2:
|
||
|
|
# create testtar.tar.bz2
|
||
|
|
bz2.BZ2File(tarname("bz2"), "wb").write(file(tarname(), "rb").read())
|
||
|
|
|
||
|
|
try:
|
||
|
|
unittest.main()
|
||
|
|
finally:
|
||
|
|
if gzip:
|
||
|
|
os.remove(tarname("gz"))
|
||
|
|
if bz2:
|
||
|
|
os.remove(tarname("bz2"))
|
||
|
|
if os.path.exists(tempdir):
|
||
|
|
shutil.rmtree(tempdir)
|
||
|
|
if os.path.exists(tempname):
|
||
|
|
os.remove(tempname)
|
||
|
|
|