627 lines
22 KiB
Python
627 lines
22 KiB
Python
"""Test script for the gzip module.
|
|
"""
|
|
|
|
import unittest
|
|
from test import support
|
|
from test.support import bigmemtest, _4G
|
|
import os
|
|
import io
|
|
import struct
|
|
import array
|
|
gzip = support.import_module('gzip')
|
|
|
|
data1 = b""" int length=DEFAULTALLOC, err = Z_OK;
|
|
PyObject *RetVal;
|
|
int flushmode = Z_FINISH;
|
|
unsigned long start_total_out;
|
|
|
|
"""
|
|
|
|
data2 = b"""/* zlibmodule.c -- gzip-compatible data compression */
|
|
/* See http://www.gzip.org/zlib/
|
|
/* See http://www.winimage.com/zLibDll for Windows */
|
|
"""
|
|
|
|
|
|
class UnseekableIO(io.BytesIO):
|
|
def seekable(self):
|
|
return False
|
|
|
|
def tell(self):
|
|
raise io.UnsupportedOperation
|
|
|
|
def seek(self, *args):
|
|
raise io.UnsupportedOperation
|
|
|
|
|
|
class BaseTest(unittest.TestCase):
|
|
filename = support.TESTFN
|
|
|
|
def setUp(self):
|
|
support.unlink(self.filename)
|
|
|
|
def tearDown(self):
|
|
support.unlink(self.filename)
|
|
|
|
|
|
class TestGzip(BaseTest):
|
|
def write_and_read_back(self, data, mode='b'):
|
|
b_data = bytes(data)
|
|
with gzip.GzipFile(self.filename, 'w'+mode) as f:
|
|
l = f.write(data)
|
|
self.assertEqual(l, len(b_data))
|
|
with gzip.GzipFile(self.filename, 'r'+mode) as f:
|
|
self.assertEqual(f.read(), b_data)
|
|
|
|
def test_write(self):
|
|
with gzip.GzipFile(self.filename, 'wb') as f:
|
|
f.write(data1 * 50)
|
|
|
|
# Try flush and fileno.
|
|
f.flush()
|
|
f.fileno()
|
|
if hasattr(os, 'fsync'):
|
|
os.fsync(f.fileno())
|
|
f.close()
|
|
|
|
# Test multiple close() calls.
|
|
f.close()
|
|
|
|
# The following test_write_xy methods test that write accepts
|
|
# the corresponding bytes-like object type as input
|
|
# and that the data written equals bytes(xy) in all cases.
|
|
def test_write_memoryview(self):
|
|
self.write_and_read_back(memoryview(data1 * 50))
|
|
m = memoryview(bytes(range(256)))
|
|
data = m.cast('B', shape=[8,8,4])
|
|
self.write_and_read_back(data)
|
|
|
|
def test_write_bytearray(self):
|
|
self.write_and_read_back(bytearray(data1 * 50))
|
|
|
|
def test_write_array(self):
|
|
self.write_and_read_back(array.array('I', data1 * 40))
|
|
|
|
def test_write_incompatible_type(self):
|
|
# Test that non-bytes-like types raise TypeError.
|
|
# Issue #21560: attempts to write incompatible types
|
|
# should not affect the state of the fileobject
|
|
with gzip.GzipFile(self.filename, 'wb') as f:
|
|
with self.assertRaises(TypeError):
|
|
f.write('')
|
|
with self.assertRaises(TypeError):
|
|
f.write([])
|
|
f.write(data1)
|
|
with gzip.GzipFile(self.filename, 'rb') as f:
|
|
self.assertEqual(f.read(), data1)
|
|
|
|
def test_read(self):
|
|
self.test_write()
|
|
# Try reading.
|
|
with gzip.GzipFile(self.filename, 'r') as f:
|
|
d = f.read()
|
|
self.assertEqual(d, data1*50)
|
|
|
|
def test_read1(self):
|
|
self.test_write()
|
|
blocks = []
|
|
nread = 0
|
|
with gzip.GzipFile(self.filename, 'r') as f:
|
|
while True:
|
|
d = f.read1()
|
|
if not d:
|
|
break
|
|
blocks.append(d)
|
|
nread += len(d)
|
|
# Check that position was updated correctly (see issue10791).
|
|
self.assertEqual(f.tell(), nread)
|
|
self.assertEqual(b''.join(blocks), data1 * 50)
|
|
|
|
@bigmemtest(size=_4G, memuse=1)
|
|
def test_read_large(self, size):
|
|
# Read chunk size over UINT_MAX should be supported, despite zlib's
|
|
# limitation per low-level call
|
|
compressed = gzip.compress(data1, compresslevel=1)
|
|
f = gzip.GzipFile(fileobj=io.BytesIO(compressed), mode='rb')
|
|
self.assertEqual(f.read(size), data1)
|
|
|
|
def test_io_on_closed_object(self):
|
|
# Test that I/O operations on closed GzipFile objects raise a
|
|
# ValueError, just like the corresponding functions on file objects.
|
|
|
|
# Write to a file, open it for reading, then close it.
|
|
self.test_write()
|
|
f = gzip.GzipFile(self.filename, 'r')
|
|
fileobj = f.fileobj
|
|
self.assertFalse(fileobj.closed)
|
|
f.close()
|
|
self.assertTrue(fileobj.closed)
|
|
with self.assertRaises(ValueError):
|
|
f.read(1)
|
|
with self.assertRaises(ValueError):
|
|
f.seek(0)
|
|
with self.assertRaises(ValueError):
|
|
f.tell()
|
|
# Open the file for writing, then close it.
|
|
f = gzip.GzipFile(self.filename, 'w')
|
|
fileobj = f.fileobj
|
|
self.assertFalse(fileobj.closed)
|
|
f.close()
|
|
self.assertTrue(fileobj.closed)
|
|
with self.assertRaises(ValueError):
|
|
f.write(b'')
|
|
with self.assertRaises(ValueError):
|
|
f.flush()
|
|
|
|
def test_append(self):
|
|
self.test_write()
|
|
# Append to the previous file
|
|
with gzip.GzipFile(self.filename, 'ab') as f:
|
|
f.write(data2 * 15)
|
|
|
|
with gzip.GzipFile(self.filename, 'rb') as f:
|
|
d = f.read()
|
|
self.assertEqual(d, (data1*50) + (data2*15))
|
|
|
|
def test_many_append(self):
|
|
# Bug #1074261 was triggered when reading a file that contained
|
|
# many, many members. Create such a file and verify that reading it
|
|
# works.
|
|
with gzip.GzipFile(self.filename, 'wb', 9) as f:
|
|
f.write(b'a')
|
|
for i in range(0, 200):
|
|
with gzip.GzipFile(self.filename, "ab", 9) as f: # append
|
|
f.write(b'a')
|
|
|
|
# Try reading the file
|
|
with gzip.GzipFile(self.filename, "rb") as zgfile:
|
|
contents = b""
|
|
while 1:
|
|
ztxt = zgfile.read(8192)
|
|
contents += ztxt
|
|
if not ztxt: break
|
|
self.assertEqual(contents, b'a'*201)
|
|
|
|
def test_exclusive_write(self):
|
|
with gzip.GzipFile(self.filename, 'xb') as f:
|
|
f.write(data1 * 50)
|
|
with gzip.GzipFile(self.filename, 'rb') as f:
|
|
self.assertEqual(f.read(), data1 * 50)
|
|
with self.assertRaises(FileExistsError):
|
|
gzip.GzipFile(self.filename, 'xb')
|
|
|
|
def test_buffered_reader(self):
|
|
# Issue #7471: a GzipFile can be wrapped in a BufferedReader for
|
|
# performance.
|
|
self.test_write()
|
|
|
|
with gzip.GzipFile(self.filename, 'rb') as f:
|
|
with io.BufferedReader(f) as r:
|
|
lines = [line for line in r]
|
|
|
|
self.assertEqual(lines, 50 * data1.splitlines(keepends=True))
|
|
|
|
def test_readline(self):
|
|
self.test_write()
|
|
# Try .readline() with varying line lengths
|
|
|
|
with gzip.GzipFile(self.filename, 'rb') as f:
|
|
line_length = 0
|
|
while 1:
|
|
L = f.readline(line_length)
|
|
if not L and line_length != 0: break
|
|
self.assertTrue(len(L) <= line_length)
|
|
line_length = (line_length + 1) % 50
|
|
|
|
def test_readlines(self):
|
|
self.test_write()
|
|
# Try .readlines()
|
|
|
|
with gzip.GzipFile(self.filename, 'rb') as f:
|
|
L = f.readlines()
|
|
|
|
with gzip.GzipFile(self.filename, 'rb') as f:
|
|
while 1:
|
|
L = f.readlines(150)
|
|
if L == []: break
|
|
|
|
def test_seek_read(self):
|
|
self.test_write()
|
|
# Try seek, read test
|
|
|
|
with gzip.GzipFile(self.filename) as f:
|
|
while 1:
|
|
oldpos = f.tell()
|
|
line1 = f.readline()
|
|
if not line1: break
|
|
newpos = f.tell()
|
|
f.seek(oldpos) # negative seek
|
|
if len(line1)>10:
|
|
amount = 10
|
|
else:
|
|
amount = len(line1)
|
|
line2 = f.read(amount)
|
|
self.assertEqual(line1[:amount], line2)
|
|
f.seek(newpos) # positive seek
|
|
|
|
def test_seek_whence(self):
|
|
self.test_write()
|
|
# Try seek(whence=1), read test
|
|
|
|
with gzip.GzipFile(self.filename) as f:
|
|
f.read(10)
|
|
f.seek(10, whence=1)
|
|
y = f.read(10)
|
|
self.assertEqual(y, data1[20:30])
|
|
|
|
def test_seek_write(self):
|
|
# Try seek, write test
|
|
with gzip.GzipFile(self.filename, 'w') as f:
|
|
for pos in range(0, 256, 16):
|
|
f.seek(pos)
|
|
f.write(b'GZ\n')
|
|
|
|
def test_mode(self):
|
|
self.test_write()
|
|
with gzip.GzipFile(self.filename, 'r') as f:
|
|
self.assertEqual(f.myfileobj.mode, 'rb')
|
|
support.unlink(self.filename)
|
|
with gzip.GzipFile(self.filename, 'x') as f:
|
|
self.assertEqual(f.myfileobj.mode, 'xb')
|
|
|
|
def test_1647484(self):
|
|
for mode in ('wb', 'rb'):
|
|
with gzip.GzipFile(self.filename, mode) as f:
|
|
self.assertTrue(hasattr(f, "name"))
|
|
self.assertEqual(f.name, self.filename)
|
|
|
|
def test_paddedfile_getattr(self):
|
|
self.test_write()
|
|
with gzip.GzipFile(self.filename, 'rb') as f:
|
|
self.assertTrue(hasattr(f.fileobj, "name"))
|
|
self.assertEqual(f.fileobj.name, self.filename)
|
|
|
|
def test_mtime(self):
|
|
mtime = 123456789
|
|
with gzip.GzipFile(self.filename, 'w', mtime = mtime) as fWrite:
|
|
fWrite.write(data1)
|
|
with gzip.GzipFile(self.filename) as fRead:
|
|
self.assertTrue(hasattr(fRead, 'mtime'))
|
|
self.assertIsNone(fRead.mtime)
|
|
dataRead = fRead.read()
|
|
self.assertEqual(dataRead, data1)
|
|
self.assertEqual(fRead.mtime, mtime)
|
|
|
|
def test_metadata(self):
|
|
mtime = 123456789
|
|
|
|
with gzip.GzipFile(self.filename, 'w', mtime = mtime) as fWrite:
|
|
fWrite.write(data1)
|
|
|
|
with open(self.filename, 'rb') as fRead:
|
|
# see RFC 1952: http://www.faqs.org/rfcs/rfc1952.html
|
|
|
|
idBytes = fRead.read(2)
|
|
self.assertEqual(idBytes, b'\x1f\x8b') # gzip ID
|
|
|
|
cmByte = fRead.read(1)
|
|
self.assertEqual(cmByte, b'\x08') # deflate
|
|
|
|
flagsByte = fRead.read(1)
|
|
self.assertEqual(flagsByte, b'\x08') # only the FNAME flag is set
|
|
|
|
mtimeBytes = fRead.read(4)
|
|
self.assertEqual(mtimeBytes, struct.pack('<i', mtime)) # little-endian
|
|
|
|
xflByte = fRead.read(1)
|
|
self.assertEqual(xflByte, b'\x02') # maximum compression
|
|
|
|
osByte = fRead.read(1)
|
|
self.assertEqual(osByte, b'\xff') # OS "unknown" (OS-independent)
|
|
|
|
# Since the FNAME flag is set, the zero-terminated filename follows.
|
|
# RFC 1952 specifies that this is the name of the input file, if any.
|
|
# However, the gzip module defaults to storing the name of the output
|
|
# file in this field.
|
|
expected = self.filename.encode('Latin-1') + b'\x00'
|
|
nameBytes = fRead.read(len(expected))
|
|
self.assertEqual(nameBytes, expected)
|
|
|
|
# Since no other flags were set, the header ends here.
|
|
# Rather than process the compressed data, let's seek to the trailer.
|
|
fRead.seek(os.stat(self.filename).st_size - 8)
|
|
|
|
crc32Bytes = fRead.read(4) # CRC32 of uncompressed data [data1]
|
|
self.assertEqual(crc32Bytes, b'\xaf\xd7d\x83')
|
|
|
|
isizeBytes = fRead.read(4)
|
|
self.assertEqual(isizeBytes, struct.pack('<i', len(data1)))
|
|
|
|
def test_with_open(self):
|
|
# GzipFile supports the context management protocol
|
|
with gzip.GzipFile(self.filename, "wb") as f:
|
|
f.write(b"xxx")
|
|
f = gzip.GzipFile(self.filename, "rb")
|
|
f.close()
|
|
try:
|
|
with f:
|
|
pass
|
|
except ValueError:
|
|
pass
|
|
else:
|
|
self.fail("__enter__ on a closed file didn't raise an exception")
|
|
try:
|
|
with gzip.GzipFile(self.filename, "wb") as f:
|
|
1/0
|
|
except ZeroDivisionError:
|
|
pass
|
|
else:
|
|
self.fail("1/0 didn't raise an exception")
|
|
|
|
def test_zero_padded_file(self):
|
|
with gzip.GzipFile(self.filename, "wb") as f:
|
|
f.write(data1 * 50)
|
|
|
|
# Pad the file with zeroes
|
|
with open(self.filename, "ab") as f:
|
|
f.write(b"\x00" * 50)
|
|
|
|
with gzip.GzipFile(self.filename, "rb") as f:
|
|
d = f.read()
|
|
self.assertEqual(d, data1 * 50, "Incorrect data in file")
|
|
|
|
def test_non_seekable_file(self):
|
|
uncompressed = data1 * 50
|
|
buf = UnseekableIO()
|
|
with gzip.GzipFile(fileobj=buf, mode="wb") as f:
|
|
f.write(uncompressed)
|
|
compressed = buf.getvalue()
|
|
buf = UnseekableIO(compressed)
|
|
with gzip.GzipFile(fileobj=buf, mode="rb") as f:
|
|
self.assertEqual(f.read(), uncompressed)
|
|
|
|
def test_peek(self):
|
|
uncompressed = data1 * 200
|
|
with gzip.GzipFile(self.filename, "wb") as f:
|
|
f.write(uncompressed)
|
|
|
|
def sizes():
|
|
while True:
|
|
for n in range(5, 50, 10):
|
|
yield n
|
|
|
|
with gzip.GzipFile(self.filename, "rb") as f:
|
|
f.max_read_chunk = 33
|
|
nread = 0
|
|
for n in sizes():
|
|
s = f.peek(n)
|
|
if s == b'':
|
|
break
|
|
self.assertEqual(f.read(len(s)), s)
|
|
nread += len(s)
|
|
self.assertEqual(f.read(100), b'')
|
|
self.assertEqual(nread, len(uncompressed))
|
|
|
|
def test_textio_readlines(self):
|
|
# Issue #10791: TextIOWrapper.readlines() fails when wrapping GzipFile.
|
|
lines = (data1 * 50).decode("ascii").splitlines(keepends=True)
|
|
self.test_write()
|
|
with gzip.GzipFile(self.filename, 'r') as f:
|
|
with io.TextIOWrapper(f, encoding="ascii") as t:
|
|
self.assertEqual(t.readlines(), lines)
|
|
|
|
def test_fileobj_from_fdopen(self):
|
|
# Issue #13781: Opening a GzipFile for writing fails when using a
|
|
# fileobj created with os.fdopen().
|
|
fd = os.open(self.filename, os.O_WRONLY | os.O_CREAT)
|
|
with os.fdopen(fd, "wb") as f:
|
|
with gzip.GzipFile(fileobj=f, mode="w") as g:
|
|
pass
|
|
|
|
def test_bytes_filename(self):
|
|
str_filename = self.filename
|
|
try:
|
|
bytes_filename = str_filename.encode("ascii")
|
|
except UnicodeEncodeError:
|
|
self.skipTest("Temporary file name needs to be ASCII")
|
|
with gzip.GzipFile(bytes_filename, "wb") as f:
|
|
f.write(data1 * 50)
|
|
with gzip.GzipFile(bytes_filename, "rb") as f:
|
|
self.assertEqual(f.read(), data1 * 50)
|
|
# Sanity check that we are actually operating on the right file.
|
|
with gzip.GzipFile(str_filename, "rb") as f:
|
|
self.assertEqual(f.read(), data1 * 50)
|
|
|
|
def test_decompress_limited(self):
|
|
"""Decompressed data buffering should be limited"""
|
|
bomb = gzip.compress(b'\0' * int(2e6), compresslevel=9)
|
|
self.assertLess(len(bomb), io.DEFAULT_BUFFER_SIZE)
|
|
|
|
bomb = io.BytesIO(bomb)
|
|
decomp = gzip.GzipFile(fileobj=bomb)
|
|
self.assertEqual(decomp.read(1), b'\0')
|
|
max_decomp = 1 + io.DEFAULT_BUFFER_SIZE
|
|
self.assertLessEqual(decomp._buffer.raw.tell(), max_decomp,
|
|
"Excessive amount of data was decompressed")
|
|
|
|
# Testing compress/decompress shortcut functions
|
|
|
|
def test_compress(self):
|
|
for data in [data1, data2]:
|
|
for args in [(), (1,), (6,), (9,)]:
|
|
datac = gzip.compress(data, *args)
|
|
self.assertEqual(type(datac), bytes)
|
|
with gzip.GzipFile(fileobj=io.BytesIO(datac), mode="rb") as f:
|
|
self.assertEqual(f.read(), data)
|
|
|
|
def test_decompress(self):
|
|
for data in (data1, data2):
|
|
buf = io.BytesIO()
|
|
with gzip.GzipFile(fileobj=buf, mode="wb") as f:
|
|
f.write(data)
|
|
self.assertEqual(gzip.decompress(buf.getvalue()), data)
|
|
# Roundtrip with compress
|
|
datac = gzip.compress(data)
|
|
self.assertEqual(gzip.decompress(datac), data)
|
|
|
|
def test_read_truncated(self):
|
|
data = data1*50
|
|
# Drop the CRC (4 bytes) and file size (4 bytes).
|
|
truncated = gzip.compress(data)[:-8]
|
|
with gzip.GzipFile(fileobj=io.BytesIO(truncated)) as f:
|
|
self.assertRaises(EOFError, f.read)
|
|
with gzip.GzipFile(fileobj=io.BytesIO(truncated)) as f:
|
|
self.assertEqual(f.read(len(data)), data)
|
|
self.assertRaises(EOFError, f.read, 1)
|
|
# Incomplete 10-byte header.
|
|
for i in range(2, 10):
|
|
with gzip.GzipFile(fileobj=io.BytesIO(truncated[:i])) as f:
|
|
self.assertRaises(EOFError, f.read, 1)
|
|
|
|
def test_read_with_extra(self):
|
|
# Gzip data with an extra field
|
|
gzdata = (b'\x1f\x8b\x08\x04\xb2\x17cQ\x02\xff'
|
|
b'\x05\x00Extra'
|
|
b'\x0bI-.\x01\x002\xd1Mx\x04\x00\x00\x00')
|
|
with gzip.GzipFile(fileobj=io.BytesIO(gzdata)) as f:
|
|
self.assertEqual(f.read(), b'Test')
|
|
|
|
def test_prepend_error(self):
|
|
# See issue #20875
|
|
with gzip.open(self.filename, "wb") as f:
|
|
f.write(data1)
|
|
with gzip.open(self.filename, "rb") as f:
|
|
f._buffer.raw._fp.prepend()
|
|
|
|
class TestOpen(BaseTest):
|
|
def test_binary_modes(self):
|
|
uncompressed = data1 * 50
|
|
|
|
with gzip.open(self.filename, "wb") as f:
|
|
f.write(uncompressed)
|
|
with open(self.filename, "rb") as f:
|
|
file_data = gzip.decompress(f.read())
|
|
self.assertEqual(file_data, uncompressed)
|
|
|
|
with gzip.open(self.filename, "rb") as f:
|
|
self.assertEqual(f.read(), uncompressed)
|
|
|
|
with gzip.open(self.filename, "ab") as f:
|
|
f.write(uncompressed)
|
|
with open(self.filename, "rb") as f:
|
|
file_data = gzip.decompress(f.read())
|
|
self.assertEqual(file_data, uncompressed * 2)
|
|
|
|
with self.assertRaises(FileExistsError):
|
|
gzip.open(self.filename, "xb")
|
|
support.unlink(self.filename)
|
|
with gzip.open(self.filename, "xb") as f:
|
|
f.write(uncompressed)
|
|
with open(self.filename, "rb") as f:
|
|
file_data = gzip.decompress(f.read())
|
|
self.assertEqual(file_data, uncompressed)
|
|
|
|
def test_implicit_binary_modes(self):
|
|
# Test implicit binary modes (no "b" or "t" in mode string).
|
|
uncompressed = data1 * 50
|
|
|
|
with gzip.open(self.filename, "w") as f:
|
|
f.write(uncompressed)
|
|
with open(self.filename, "rb") as f:
|
|
file_data = gzip.decompress(f.read())
|
|
self.assertEqual(file_data, uncompressed)
|
|
|
|
with gzip.open(self.filename, "r") as f:
|
|
self.assertEqual(f.read(), uncompressed)
|
|
|
|
with gzip.open(self.filename, "a") as f:
|
|
f.write(uncompressed)
|
|
with open(self.filename, "rb") as f:
|
|
file_data = gzip.decompress(f.read())
|
|
self.assertEqual(file_data, uncompressed * 2)
|
|
|
|
with self.assertRaises(FileExistsError):
|
|
gzip.open(self.filename, "x")
|
|
support.unlink(self.filename)
|
|
with gzip.open(self.filename, "x") as f:
|
|
f.write(uncompressed)
|
|
with open(self.filename, "rb") as f:
|
|
file_data = gzip.decompress(f.read())
|
|
self.assertEqual(file_data, uncompressed)
|
|
|
|
def test_text_modes(self):
|
|
uncompressed = data1.decode("ascii") * 50
|
|
uncompressed_raw = uncompressed.replace("\n", os.linesep)
|
|
with gzip.open(self.filename, "wt") as f:
|
|
f.write(uncompressed)
|
|
with open(self.filename, "rb") as f:
|
|
file_data = gzip.decompress(f.read()).decode("ascii")
|
|
self.assertEqual(file_data, uncompressed_raw)
|
|
with gzip.open(self.filename, "rt") as f:
|
|
self.assertEqual(f.read(), uncompressed)
|
|
with gzip.open(self.filename, "at") as f:
|
|
f.write(uncompressed)
|
|
with open(self.filename, "rb") as f:
|
|
file_data = gzip.decompress(f.read()).decode("ascii")
|
|
self.assertEqual(file_data, uncompressed_raw * 2)
|
|
|
|
def test_fileobj(self):
|
|
uncompressed_bytes = data1 * 50
|
|
uncompressed_str = uncompressed_bytes.decode("ascii")
|
|
compressed = gzip.compress(uncompressed_bytes)
|
|
with gzip.open(io.BytesIO(compressed), "r") as f:
|
|
self.assertEqual(f.read(), uncompressed_bytes)
|
|
with gzip.open(io.BytesIO(compressed), "rb") as f:
|
|
self.assertEqual(f.read(), uncompressed_bytes)
|
|
with gzip.open(io.BytesIO(compressed), "rt") as f:
|
|
self.assertEqual(f.read(), uncompressed_str)
|
|
|
|
def test_bad_params(self):
|
|
# Test invalid parameter combinations.
|
|
with self.assertRaises(TypeError):
|
|
gzip.open(123.456)
|
|
with self.assertRaises(ValueError):
|
|
gzip.open(self.filename, "wbt")
|
|
with self.assertRaises(ValueError):
|
|
gzip.open(self.filename, "xbt")
|
|
with self.assertRaises(ValueError):
|
|
gzip.open(self.filename, "rb", encoding="utf-8")
|
|
with self.assertRaises(ValueError):
|
|
gzip.open(self.filename, "rb", errors="ignore")
|
|
with self.assertRaises(ValueError):
|
|
gzip.open(self.filename, "rb", newline="\n")
|
|
|
|
def test_encoding(self):
|
|
# Test non-default encoding.
|
|
uncompressed = data1.decode("ascii") * 50
|
|
uncompressed_raw = uncompressed.replace("\n", os.linesep)
|
|
with gzip.open(self.filename, "wt", encoding="utf-16") as f:
|
|
f.write(uncompressed)
|
|
with open(self.filename, "rb") as f:
|
|
file_data = gzip.decompress(f.read()).decode("utf-16")
|
|
self.assertEqual(file_data, uncompressed_raw)
|
|
with gzip.open(self.filename, "rt", encoding="utf-16") as f:
|
|
self.assertEqual(f.read(), uncompressed)
|
|
|
|
def test_encoding_error_handler(self):
|
|
# Test with non-default encoding error handler.
|
|
with gzip.open(self.filename, "wb") as f:
|
|
f.write(b"foo\xffbar")
|
|
with gzip.open(self.filename, "rt", encoding="ascii", errors="ignore") \
|
|
as f:
|
|
self.assertEqual(f.read(), "foobar")
|
|
|
|
def test_newline(self):
|
|
# Test with explicit newline (universal newline mode disabled).
|
|
uncompressed = data1.decode("ascii") * 50
|
|
with gzip.open(self.filename, "wt", newline="\n") as f:
|
|
f.write(uncompressed)
|
|
with gzip.open(self.filename, "rt", newline="\r") as f:
|
|
self.assertEqual(f.readlines(), [uncompressed])
|
|
|
|
def test_main(verbose=None):
|
|
support.run_unittest(TestGzip, TestOpen)
|
|
|
|
if __name__ == "__main__":
|
|
test_main(verbose=True)
|