| from test import support | |
| from test.support import bigmemtest, _4G | |
| import array | |
| import unittest | |
| import io | |
| from io import BytesIO, DEFAULT_BUFFER_SIZE | |
| import os | |
| import pickle | |
| import glob | |
| import tempfile | |
| import random | |
| import shutil | |
| import subprocess | |
| import threading | |
| from test.support import import_helper | |
| from test.support import threading_helper | |
| from test.support.os_helper import unlink, FakePath | |
| from compression._common import _streams | |
| import sys | |
| # Skip tests if the bz2 module doesn't exist. | |
| bz2 = import_helper.import_module('bz2') | |
| from bz2 import BZ2File, BZ2Compressor, BZ2Decompressor | |
| has_cmdline_bunzip2 = None | |
| def ext_decompress(data): | |
| global has_cmdline_bunzip2 | |
| if has_cmdline_bunzip2 is None: | |
| has_cmdline_bunzip2 = bool(shutil.which('bunzip2')) | |
| if has_cmdline_bunzip2: | |
| return subprocess.check_output(['bunzip2'], input=data) | |
| else: | |
| return bz2.decompress(data) | |
| class BaseTest(unittest.TestCase): | |
| "Base for other testcases." | |
| TEXT_LINES = [ | |
| b'root:x:0:0:root:/root:/bin/bash\n', | |
| b'bin:x:1:1:bin:/bin:\n', | |
| b'daemon:x:2:2:daemon:/sbin:\n', | |
| b'adm:x:3:4:adm:/var/adm:\n', | |
| b'lp:x:4:7:lp:/var/spool/lpd:\n', | |
| b'sync:x:5:0:sync:/sbin:/bin/sync\n', | |
| b'shutdown:x:6:0:shutdown:/sbin:/sbin/shutdown\n', | |
| b'halt:x:7:0:halt:/sbin:/sbin/halt\n', | |
| b'mail:x:8:12:mail:/var/spool/mail:\n', | |
| b'news:x:9:13:news:/var/spool/news:\n', | |
| b'uucp:x:10:14:uucp:/var/spool/uucp:\n', | |
| b'operator:x:11:0:operator:/root:\n', | |
| b'games:x:12:100:games:/usr/games:\n', | |
| b'gopher:x:13:30:gopher:/usr/lib/gopher-data:\n', | |
| b'ftp:x:14:50:FTP User:/var/ftp:/bin/bash\n', | |
| b'nobody:x:65534:65534:Nobody:/home:\n', | |
| b'postfix:x:100:101:postfix:/var/spool/postfix:\n', | |
| b'niemeyer:x:500:500::/home/niemeyer:/bin/bash\n', | |
| b'postgres:x:101:102:PostgreSQL Server:/var/lib/pgsql:/bin/bash\n', | |
| b'mysql:x:102:103:MySQL server:/var/lib/mysql:/bin/bash\n', | |
| b'www:x:103:104::/var/www:/bin/false\n', | |
| ] | |
| TEXT = b''.join(TEXT_LINES) | |
| DATA = b'BZh91AY&SY.\xc8N\x18\x00\x01>_\x80\x00\x10@\x02\xff\xf0\x01\x07n\x00?\xe7\xff\xe00\x01\x99\xaa\x00\xc0\x03F\x86\x8c#&\x83F\x9a\x03\x06\xa6\xd0\xa6\x93M\x0fQ\xa7\xa8\x06\x804hh\x12$\x11\xa4i4\xf14S\xd2<Q\xb5\x0fH\xd3\xd4\xdd\xd5\x87\xbb\xf8\x94\r\x8f\xafI\x12\xe1\xc9\xf8/E\x00pu\x89\x12]\xc9\xbbDL\nQ\x0e\t1\x12\xdf\xa0\xc0\x97\xac2O9\x89\x13\x94\x0e\x1c7\x0ed\x95I\x0c\xaaJ\xa4\x18L\x10\x05#\x9c\xaf\xba\xbc/\x97\x8a#C\xc8\xe1\x8cW\xf9\xe2\xd0\xd6M\xa7\x8bXa<e\x84t\xcbL\xb3\xa7\xd9\xcd\xd1\xcb\x84.\xaf\xb3\xab\xab\xad`n}\xa0lh\tE,\x8eZ\x15\x17VH>\x88\xe5\xcd9gd6\x0b\n\xe9\x9b\xd5\x8a\x99\xf7\x08.K\x8ev\xfb\xf7xw\xbb\xdf\xa1\x92\xf1\xdd|/";\xa2\xba\x9f\xd5\xb1#A\xb6\xf6\xb3o\xc9\xc5y\\\xebO\xe7\x85\x9a\xbc\xb6f8\x952\xd5\xd7"%\x89>V,\xf7\xa6z\xe2\x9f\xa3\xdf\x11\x11"\xd6E)I\xa9\x13^\xca\xf3r\xd0\x03U\x922\xf26\xec\xb6\xed\x8b\xc3U\x13\x9d\xc5\x170\xa4\xfa^\x92\xacDF\x8a\x97\xd6\x19\xfe\xdd\xb8\xbd\x1a\x9a\x19\xa3\x80ankR\x8b\xe5\xd83]\xa9\xc6\x08\x82f\xf6\xb9"6l$\xb8j@\xc0\x8a\xb0l1..\xbak\x83ls\x15\xbc\xf4\xc1\x13\xbe\xf8E\xb8\x9d\r\xa8\x9dk\x84\xd3n\xfa\xacQ\x07\xb1%y\xaav\xb4\x08\xe0z\x1b\x16\xf5\x04\xe9\xcc\xb9\x08z\x1en7.G\xfc]\xc9\x14\xe1B@\xbb!8`' | |
| EMPTY_DATA = b'BZh9\x17rE8P\x90\x00\x00\x00\x00' | |
| BAD_DATA = b'this is not a valid bzip2 file' | |
| # Some tests need more than one block of data. The bz2 module does not | |
| # support flushing a block during compression, so we must read in data until | |
| # there are at least 2 blocks. Since different orderings of Python files may | |
| # be compressed differently, we need to check the compression output for | |
| # more than one bzip2 block header magic, a hex encoding of Pi | |
| # (0x314159265359) | |
| bz2_block_magic = bytes.fromhex('314159265359') | |
| test_size = 0 | |
| BIG_TEXT = b'' | |
| BIG_DATA = b'' | |
| compressor = BZ2Compressor(1) | |
| for fname in glob.glob(os.path.join(glob.escape(os.path.dirname(__file__)), '*.py')): | |
| with open(fname, 'rb') as fh: | |
| data = fh.read() | |
| BIG_DATA += compressor.compress(data) | |
| BIG_TEXT += data | |
| # TODO(emmatyping): if it is impossible for a block header to cross | |
| # multiple outputs, we can just search the output of each compress call | |
| # which should be more efficient | |
| if BIG_DATA.count(bz2_block_magic) > 1: | |
| BIG_DATA += compressor.flush() | |
| break | |
| def setUp(self): | |
| fd, self.filename = tempfile.mkstemp() | |
| os.close(fd) | |
| def tearDown(self): | |
| unlink(self.filename) | |
| class BZ2FileTest(BaseTest): | |
| "Test the BZ2File class." | |
| def createTempFile(self, streams=1, suffix=b""): | |
| with open(self.filename, "wb") as f: | |
| f.write(self.DATA * streams) | |
| f.write(suffix) | |
| def testBadArgs(self): | |
| self.assertRaises(TypeError, BZ2File, 123.456) | |
| self.assertRaises(ValueError, BZ2File, os.devnull, "z") | |
| self.assertRaises(ValueError, BZ2File, os.devnull, "rx") | |
| self.assertRaises(ValueError, BZ2File, os.devnull, "rbt") | |
| self.assertRaises(ValueError, BZ2File, os.devnull, compresslevel=0) | |
| self.assertRaises(ValueError, BZ2File, os.devnull, compresslevel=10) | |
| # compresslevel is keyword-only | |
| self.assertRaises(TypeError, BZ2File, os.devnull, "r", 3) | |
| def testRead(self): | |
| self.createTempFile() | |
| with BZ2File(self.filename) as bz2f: | |
| self.assertRaises(TypeError, bz2f.read, float()) | |
| self.assertEqual(bz2f.read(), self.TEXT) | |
| def testReadBadFile(self): | |
| self.createTempFile(streams=0, suffix=self.BAD_DATA) | |
| with BZ2File(self.filename) as bz2f: | |
| self.assertRaises(OSError, bz2f.read) | |
| def testReadMultiStream(self): | |
| self.createTempFile(streams=5) | |
| with BZ2File(self.filename) as bz2f: | |
| self.assertRaises(TypeError, bz2f.read, float()) | |
| self.assertEqual(bz2f.read(), self.TEXT * 5) | |
| def testReadMonkeyMultiStream(self): | |
| # Test BZ2File.read() on a multi-stream archive where a stream | |
| # boundary coincides with the end of the raw read buffer. | |
| buffer_size = _streams.BUFFER_SIZE | |
| _streams.BUFFER_SIZE = len(self.DATA) | |
| try: | |
| self.createTempFile(streams=5) | |
| with BZ2File(self.filename) as bz2f: | |
| self.assertRaises(TypeError, bz2f.read, float()) | |
| self.assertEqual(bz2f.read(), self.TEXT * 5) | |
| finally: | |
| _streams.BUFFER_SIZE = buffer_size | |
| def testReadTrailingJunk(self): | |
| self.createTempFile(suffix=self.BAD_DATA) | |
| with BZ2File(self.filename) as bz2f: | |
| self.assertEqual(bz2f.read(), self.TEXT) | |
| def testReadMultiStreamTrailingJunk(self): | |
| self.createTempFile(streams=5, suffix=self.BAD_DATA) | |
| with BZ2File(self.filename) as bz2f: | |
| self.assertEqual(bz2f.read(), self.TEXT * 5) | |
| def testRead0(self): | |
| self.createTempFile() | |
| with BZ2File(self.filename) as bz2f: | |
| self.assertRaises(TypeError, bz2f.read, float()) | |
| self.assertEqual(bz2f.read(0), b"") | |
| def testReadChunk10(self): | |
| self.createTempFile() | |
| with BZ2File(self.filename) as bz2f: | |
| text = b'' | |
| while True: | |
| str = bz2f.read(10) | |
| if not str: | |
| break | |
| text += str | |
| self.assertEqual(text, self.TEXT) | |
| def testReadChunk10MultiStream(self): | |
| self.createTempFile(streams=5) | |
| with BZ2File(self.filename) as bz2f: | |
| text = b'' | |
| while True: | |
| str = bz2f.read(10) | |
| if not str: | |
| break | |
| text += str | |
| self.assertEqual(text, self.TEXT * 5) | |
| def testRead100(self): | |
| self.createTempFile() | |
| with BZ2File(self.filename) as bz2f: | |
| self.assertEqual(bz2f.read(100), self.TEXT[:100]) | |
| def testPeek(self): | |
| self.createTempFile() | |
| with BZ2File(self.filename) as bz2f: | |
| pdata = bz2f.peek() | |
| self.assertNotEqual(len(pdata), 0) | |
| self.assertStartsWith(self.TEXT, pdata) | |
| self.assertEqual(bz2f.read(), self.TEXT) | |
| def testReadInto(self): | |
| self.createTempFile() | |
| with BZ2File(self.filename) as bz2f: | |
| n = 128 | |
| b = bytearray(n) | |
| self.assertEqual(bz2f.readinto(b), n) | |
| self.assertEqual(b, self.TEXT[:n]) | |
| n = len(self.TEXT) - n | |
| b = bytearray(len(self.TEXT)) | |
| self.assertEqual(bz2f.readinto(b), n) | |
| self.assertEqual(b[:n], self.TEXT[-n:]) | |
| def testReadLine(self): | |
| self.createTempFile() | |
| with BZ2File(self.filename) as bz2f: | |
| self.assertRaises(TypeError, bz2f.readline, None) | |
| for line in self.TEXT_LINES: | |
| self.assertEqual(bz2f.readline(), line) | |
| def testReadLineMultiStream(self): | |
| self.createTempFile(streams=5) | |
| with BZ2File(self.filename) as bz2f: | |
| self.assertRaises(TypeError, bz2f.readline, None) | |
| for line in self.TEXT_LINES * 5: | |
| self.assertEqual(bz2f.readline(), line) | |
| def testReadLines(self): | |
| self.createTempFile() | |
| with BZ2File(self.filename) as bz2f: | |
| self.assertRaises(TypeError, bz2f.readlines, None) | |
| self.assertEqual(bz2f.readlines(), self.TEXT_LINES) | |
| def testReadLinesMultiStream(self): | |
| self.createTempFile(streams=5) | |
| with BZ2File(self.filename) as bz2f: | |
| self.assertRaises(TypeError, bz2f.readlines, None) | |
| self.assertEqual(bz2f.readlines(), self.TEXT_LINES * 5) | |
| def testIterator(self): | |
| self.createTempFile() | |
| with BZ2File(self.filename) as bz2f: | |
| self.assertEqual(list(iter(bz2f)), self.TEXT_LINES) | |
| def testIteratorMultiStream(self): | |
| self.createTempFile(streams=5) | |
| with BZ2File(self.filename) as bz2f: | |
| self.assertEqual(list(iter(bz2f)), self.TEXT_LINES * 5) | |
| def testClosedIteratorDeadlock(self): | |
| # Issue #3309: Iteration on a closed BZ2File should release the lock. | |
| self.createTempFile() | |
| bz2f = BZ2File(self.filename) | |
| bz2f.close() | |
| self.assertRaises(ValueError, next, bz2f) | |
| # This call will deadlock if the above call failed to release the lock. | |
| self.assertRaises(ValueError, bz2f.readlines) | |
| def testWrite(self): | |
| with BZ2File(self.filename, "w") as bz2f: | |
| self.assertRaises(TypeError, bz2f.write) | |
| bz2f.write(self.TEXT) | |
| with open(self.filename, 'rb') as f: | |
| self.assertEqual(ext_decompress(f.read()), self.TEXT) | |
| def testWriteChunks10(self): | |
| with BZ2File(self.filename, "w") as bz2f: | |
| n = 0 | |
| while True: | |
| str = self.TEXT[n*10:(n+1)*10] | |
| if not str: | |
| break | |
| bz2f.write(str) | |
| n += 1 | |
| with open(self.filename, 'rb') as f: | |
| self.assertEqual(ext_decompress(f.read()), self.TEXT) | |
| def testWriteNonDefaultCompressLevel(self): | |
| expected = bz2.compress(self.TEXT, compresslevel=5) | |
| with BZ2File(self.filename, "w", compresslevel=5) as bz2f: | |
| bz2f.write(self.TEXT) | |
| with open(self.filename, "rb") as f: | |
| self.assertEqual(f.read(), expected) | |
| def testWriteLines(self): | |
| with BZ2File(self.filename, "w") as bz2f: | |
| self.assertRaises(TypeError, bz2f.writelines) | |
| bz2f.writelines(self.TEXT_LINES) | |
| # Issue #1535500: Calling writelines() on a closed BZ2File | |
| # should raise an exception. | |
| self.assertRaises(ValueError, bz2f.writelines, ["a"]) | |
| with open(self.filename, 'rb') as f: | |
| self.assertEqual(ext_decompress(f.read()), self.TEXT) | |
| def testWriteMethodsOnReadOnlyFile(self): | |
| with BZ2File(self.filename, "w") as bz2f: | |
| bz2f.write(b"abc") | |
| with BZ2File(self.filename, "r") as bz2f: | |
| self.assertRaises(OSError, bz2f.write, b"a") | |
| self.assertRaises(OSError, bz2f.writelines, [b"a"]) | |
| def testAppend(self): | |
| with BZ2File(self.filename, "w") as bz2f: | |
| self.assertRaises(TypeError, bz2f.write) | |
| bz2f.write(self.TEXT) | |
| with BZ2File(self.filename, "a") as bz2f: | |
| self.assertRaises(TypeError, bz2f.write) | |
| bz2f.write(self.TEXT) | |
| with open(self.filename, 'rb') as f: | |
| self.assertEqual(ext_decompress(f.read()), self.TEXT * 2) | |
| def testSeekForward(self): | |
| self.createTempFile() | |
| with BZ2File(self.filename) as bz2f: | |
| self.assertRaises(TypeError, bz2f.seek) | |
| bz2f.seek(150) | |
| self.assertEqual(bz2f.read(), self.TEXT[150:]) | |
| def testSeekForwardAcrossStreams(self): | |
| self.createTempFile(streams=2) | |
| with BZ2File(self.filename) as bz2f: | |
| self.assertRaises(TypeError, bz2f.seek) | |
| bz2f.seek(len(self.TEXT) + 150) | |
| self.assertEqual(bz2f.read(), self.TEXT[150:]) | |
| def testSeekBackwards(self): | |
| self.createTempFile() | |
| with BZ2File(self.filename) as bz2f: | |
| bz2f.read(500) | |
| bz2f.seek(-150, 1) | |
| self.assertEqual(bz2f.read(), self.TEXT[500-150:]) | |
| def testSeekBackwardsAcrossStreams(self): | |
| self.createTempFile(streams=2) | |
| with BZ2File(self.filename) as bz2f: | |
| readto = len(self.TEXT) + 100 | |
| while readto > 0: | |
| readto -= len(bz2f.read(readto)) | |
| bz2f.seek(-150, 1) | |
| self.assertEqual(bz2f.read(), self.TEXT[100-150:] + self.TEXT) | |
| def testSeekBackwardsFromEnd(self): | |
| self.createTempFile() | |
| with BZ2File(self.filename) as bz2f: | |
| bz2f.seek(-150, 2) | |
| self.assertEqual(bz2f.read(), self.TEXT[len(self.TEXT)-150:]) | |
| def testSeekBackwardsFromEndAcrossStreams(self): | |
| self.createTempFile(streams=2) | |
| with BZ2File(self.filename) as bz2f: | |
| bz2f.seek(-1000, 2) | |
| self.assertEqual(bz2f.read(), (self.TEXT * 2)[-1000:]) | |
| def testSeekPostEnd(self): | |
| self.createTempFile() | |
| with BZ2File(self.filename) as bz2f: | |
| bz2f.seek(150000) | |
| self.assertEqual(bz2f.tell(), len(self.TEXT)) | |
| self.assertEqual(bz2f.read(), b"") | |
| def testSeekPostEndMultiStream(self): | |
| self.createTempFile(streams=5) | |
| with BZ2File(self.filename) as bz2f: | |
| bz2f.seek(150000) | |
| self.assertEqual(bz2f.tell(), len(self.TEXT) * 5) | |
| self.assertEqual(bz2f.read(), b"") | |
| def testSeekPostEndTwice(self): | |
| self.createTempFile() | |
| with BZ2File(self.filename) as bz2f: | |
| bz2f.seek(150000) | |
| bz2f.seek(150000) | |
| self.assertEqual(bz2f.tell(), len(self.TEXT)) | |
| self.assertEqual(bz2f.read(), b"") | |
| def testSeekPostEndTwiceMultiStream(self): | |
| self.createTempFile(streams=5) | |
| with BZ2File(self.filename) as bz2f: | |
| bz2f.seek(150000) | |
| bz2f.seek(150000) | |
| self.assertEqual(bz2f.tell(), len(self.TEXT) * 5) | |
| self.assertEqual(bz2f.read(), b"") | |
| def testSeekPreStart(self): | |
| self.createTempFile() | |
| with BZ2File(self.filename) as bz2f: | |
| bz2f.seek(-150) | |
| self.assertEqual(bz2f.tell(), 0) | |
| self.assertEqual(bz2f.read(), self.TEXT) | |
| def testSeekPreStartMultiStream(self): | |
| self.createTempFile(streams=2) | |
| with BZ2File(self.filename) as bz2f: | |
| bz2f.seek(-150) | |
| self.assertEqual(bz2f.tell(), 0) | |
| self.assertEqual(bz2f.read(), self.TEXT * 2) | |
| def testFileno(self): | |
| self.createTempFile() | |
| with open(self.filename, 'rb') as rawf: | |
| bz2f = BZ2File(rawf) | |
| try: | |
| self.assertEqual(bz2f.fileno(), rawf.fileno()) | |
| finally: | |
| bz2f.close() | |
| self.assertRaises(ValueError, bz2f.fileno) | |
| def testSeekable(self): | |
| bz2f = BZ2File(BytesIO(self.DATA)) | |
| try: | |
| self.assertTrue(bz2f.seekable()) | |
| bz2f.read() | |
| self.assertTrue(bz2f.seekable()) | |
| finally: | |
| bz2f.close() | |
| self.assertRaises(ValueError, bz2f.seekable) | |
| bz2f = BZ2File(BytesIO(), "w") | |
| try: | |
| self.assertFalse(bz2f.seekable()) | |
| finally: | |
| bz2f.close() | |
| self.assertRaises(ValueError, bz2f.seekable) | |
| src = BytesIO(self.DATA) | |
| src.seekable = lambda: False | |
| bz2f = BZ2File(src) | |
| try: | |
| self.assertFalse(bz2f.seekable()) | |
| finally: | |
| bz2f.close() | |
| self.assertRaises(ValueError, bz2f.seekable) | |
| def testReadable(self): | |
| bz2f = BZ2File(BytesIO(self.DATA)) | |
| try: | |
| self.assertTrue(bz2f.readable()) | |
| bz2f.read() | |
| self.assertTrue(bz2f.readable()) | |
| finally: | |
| bz2f.close() | |
| self.assertRaises(ValueError, bz2f.readable) | |
| bz2f = BZ2File(BytesIO(), "w") | |
| try: | |
| self.assertFalse(bz2f.readable()) | |
| finally: | |
| bz2f.close() | |
| self.assertRaises(ValueError, bz2f.readable) | |
| def testWritable(self): | |
| bz2f = BZ2File(BytesIO(self.DATA)) | |
| try: | |
| self.assertFalse(bz2f.writable()) | |
| bz2f.read() | |
| self.assertFalse(bz2f.writable()) | |
| finally: | |
| bz2f.close() | |
| self.assertRaises(ValueError, bz2f.writable) | |
| bz2f = BZ2File(BytesIO(), "w") | |
| try: | |
| self.assertTrue(bz2f.writable()) | |
| finally: | |
| bz2f.close() | |
| self.assertRaises(ValueError, bz2f.writable) | |
| def testOpenDel(self): | |
| self.createTempFile() | |
| for i in range(10000): | |
| o = BZ2File(self.filename) | |
| del o | |
| def testOpenNonexistent(self): | |
| self.assertRaises(OSError, BZ2File, "/non/existent") | |
| def testReadlinesNoNewline(self): | |
| # Issue #1191043: readlines() fails on a file containing no newline. | |
| data = b'BZh91AY&SY\xd9b\x89]\x00\x00\x00\x03\x80\x04\x00\x02\x00\x0c\x00 \x00!\x9ah3M\x13<]\xc9\x14\xe1BCe\x8a%t' | |
| with open(self.filename, "wb") as f: | |
| f.write(data) | |
| with BZ2File(self.filename) as bz2f: | |
| lines = bz2f.readlines() | |
| self.assertEqual(lines, [b'Test']) | |
| with BZ2File(self.filename) as bz2f: | |
| xlines = list(bz2f.readlines()) | |
| self.assertEqual(xlines, [b'Test']) | |
| def testContextProtocol(self): | |
| with BZ2File(self.filename, "wb") as f: | |
| f.write(b"xxx") | |
| f = BZ2File(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 BZ2File(self.filename, "wb") as f: | |
| 1/0 | |
| except ZeroDivisionError: | |
| pass | |
| else: | |
| self.fail("1/0 didn't raise an exception") | |
| @threading_helper.requires_working_threading() | |
| def testThreading(self): | |
| # Issue #7205: Using a BZ2File from several threads shouldn't deadlock. | |
| data = b"1" * 2**20 | |
| nthreads = 10 | |
| with BZ2File(self.filename, 'wb') as f: | |
| def comp(): | |
| for i in range(5): | |
| f.write(data) | |
| threads = [threading.Thread(target=comp) for i in range(nthreads)] | |
| with threading_helper.start_threads(threads): | |
| pass | |
| def testMixedIterationAndReads(self): | |
| self.createTempFile() | |
| linelen = len(self.TEXT_LINES[0]) | |
| halflen = linelen // 2 | |
| with BZ2File(self.filename) as bz2f: | |
| bz2f.read(halflen) | |
| self.assertEqual(next(bz2f), self.TEXT_LINES[0][halflen:]) | |
| self.assertEqual(bz2f.read(), self.TEXT[linelen:]) | |
| with BZ2File(self.filename) as bz2f: | |
| bz2f.readline() | |
| self.assertEqual(next(bz2f), self.TEXT_LINES[1]) | |
| self.assertEqual(bz2f.readline(), self.TEXT_LINES[2]) | |
| with BZ2File(self.filename) as bz2f: | |
| bz2f.readlines() | |
| self.assertRaises(StopIteration, next, bz2f) | |
| self.assertEqual(bz2f.readlines(), []) | |
| def testMultiStreamOrdering(self): | |
| # Test the ordering of streams when reading a multi-stream archive. | |
| data1 = b"foo" * 1000 | |
| data2 = b"bar" * 1000 | |
| with BZ2File(self.filename, "w") as bz2f: | |
| bz2f.write(data1) | |
| with BZ2File(self.filename, "a") as bz2f: | |
| bz2f.write(data2) | |
| with BZ2File(self.filename) as bz2f: | |
| self.assertEqual(bz2f.read(), data1 + data2) | |
| def testOpenFilename(self): | |
| with BZ2File(self.filename, "wb") as f: | |
| f.write(b'content') | |
| self.assertEqual(f.name, self.filename) | |
| self.assertIsInstance(f.fileno(), int) | |
| self.assertEqual(f.mode, 'wb') | |
| self.assertIs(f.readable(), False) | |
| self.assertIs(f.writable(), True) | |
| self.assertIs(f.seekable(), False) | |
| self.assertIs(f.closed, False) | |
| self.assertIs(f.closed, True) | |
| with self.assertRaises(ValueError): | |
| f.name | |
| self.assertRaises(ValueError, f.fileno) | |
| self.assertEqual(f.mode, 'wb') | |
| self.assertRaises(ValueError, f.readable) | |
| self.assertRaises(ValueError, f.writable) | |
| self.assertRaises(ValueError, f.seekable) | |
| with BZ2File(self.filename, "ab") as f: | |
| f.write(b'appendix') | |
| self.assertEqual(f.name, self.filename) | |
| self.assertIsInstance(f.fileno(), int) | |
| self.assertEqual(f.mode, 'wb') | |
| self.assertIs(f.readable(), False) | |
| self.assertIs(f.writable(), True) | |
| self.assertIs(f.seekable(), False) | |
| self.assertIs(f.closed, False) | |
| self.assertIs(f.closed, True) | |
| with self.assertRaises(ValueError): | |
| f.name | |
| self.assertRaises(ValueError, f.fileno) | |
| self.assertEqual(f.mode, 'wb') | |
| self.assertRaises(ValueError, f.readable) | |
| self.assertRaises(ValueError, f.writable) | |
| self.assertRaises(ValueError, f.seekable) | |
| with BZ2File(self.filename, 'rb') as f: | |
| self.assertEqual(f.read(), b'contentappendix') | |
| self.assertEqual(f.name, self.filename) | |
| self.assertIsInstance(f.fileno(), int) | |
| self.assertEqual(f.mode, 'rb') | |
| self.assertIs(f.readable(), True) | |
| self.assertIs(f.writable(), False) | |
| self.assertIs(f.seekable(), True) | |
| self.assertIs(f.closed, False) | |
| self.assertIs(f.closed, True) | |
| with self.assertRaises(ValueError): | |
| f.name | |
| self.assertRaises(ValueError, f.fileno) | |
| self.assertEqual(f.mode, 'rb') | |
| self.assertRaises(ValueError, f.readable) | |
| self.assertRaises(ValueError, f.writable) | |
| self.assertRaises(ValueError, f.seekable) | |
| def testOpenFileWithName(self): | |
| with open(self.filename, 'wb') as raw: | |
| with BZ2File(raw, 'wb') as f: | |
| f.write(b'content') | |
| self.assertEqual(f.name, raw.name) | |
| self.assertEqual(f.fileno(), raw.fileno()) | |
| self.assertEqual(f.mode, 'wb') | |
| self.assertIs(f.readable(), False) | |
| self.assertIs(f.writable(), True) | |
| self.assertIs(f.seekable(), False) | |
| self.assertIs(f.closed, False) | |
| self.assertIs(f.closed, True) | |
| with self.assertRaises(ValueError): | |
| f.name | |
| self.assertRaises(ValueError, f.fileno) | |
| self.assertEqual(f.mode, 'wb') | |
| self.assertRaises(ValueError, f.readable) | |
| self.assertRaises(ValueError, f.writable) | |
| self.assertRaises(ValueError, f.seekable) | |
| with open(self.filename, 'ab') as raw: | |
| with BZ2File(raw, 'ab') as f: | |
| f.write(b'appendix') | |
| self.assertEqual(f.name, raw.name) | |
| self.assertEqual(f.fileno(), raw.fileno()) | |
| self.assertEqual(f.mode, 'wb') | |
| self.assertIs(f.readable(), False) | |
| self.assertIs(f.writable(), True) | |
| self.assertIs(f.seekable(), False) | |
| self.assertIs(f.closed, False) | |
| self.assertIs(f.closed, True) | |
| with self.assertRaises(ValueError): | |
| f.name | |
| self.assertRaises(ValueError, f.fileno) | |
| self.assertEqual(f.mode, 'wb') | |
| self.assertRaises(ValueError, f.readable) | |
| self.assertRaises(ValueError, f.writable) | |
| self.assertRaises(ValueError, f.seekable) | |
| with open(self.filename, 'rb') as raw: | |
| with BZ2File(raw, 'rb') as f: | |
| self.assertEqual(f.read(), b'contentappendix') | |
| self.assertEqual(f.name, raw.name) | |
| self.assertEqual(f.fileno(), raw.fileno()) | |
| self.assertEqual(f.mode, 'rb') | |
| self.assertIs(f.readable(), True) | |
| self.assertIs(f.writable(), False) | |
| self.assertIs(f.seekable(), True) | |
| self.assertIs(f.closed, False) | |
| self.assertIs(f.closed, True) | |
| with self.assertRaises(ValueError): | |
| f.name | |
| self.assertRaises(ValueError, f.fileno) | |
| self.assertEqual(f.mode, 'rb') | |
| self.assertRaises(ValueError, f.readable) | |
| self.assertRaises(ValueError, f.writable) | |
| self.assertRaises(ValueError, f.seekable) | |
| def testOpenFileWithoutName(self): | |
| bio = BytesIO() | |
| with BZ2File(bio, 'wb') as f: | |
| f.write(b'content') | |
| with self.assertRaises(AttributeError): | |
| f.name | |
| self.assertRaises(io.UnsupportedOperation, f.fileno) | |
| self.assertEqual(f.mode, 'wb') | |
| with self.assertRaises(ValueError): | |
| f.name | |
| self.assertRaises(ValueError, f.fileno) | |
| with BZ2File(bio, 'ab') as f: | |
| f.write(b'appendix') | |
| with self.assertRaises(AttributeError): | |
| f.name | |
| self.assertRaises(io.UnsupportedOperation, f.fileno) | |
| self.assertEqual(f.mode, 'wb') | |
| with self.assertRaises(ValueError): | |
| f.name | |
| self.assertRaises(ValueError, f.fileno) | |
| bio.seek(0) | |
| with BZ2File(bio, 'rb') as f: | |
| self.assertEqual(f.read(), b'contentappendix') | |
| with self.assertRaises(AttributeError): | |
| f.name | |
| self.assertRaises(io.UnsupportedOperation, f.fileno) | |
| self.assertEqual(f.mode, 'rb') | |
| with self.assertRaises(ValueError): | |
| f.name | |
| self.assertRaises(ValueError, f.fileno) | |
| def testOpenFileWithIntName(self): | |
| fd = os.open(self.filename, os.O_WRONLY | os.O_CREAT | os.O_TRUNC) | |
| with open(fd, 'wb') as raw: | |
| with BZ2File(raw, 'wb') as f: | |
| f.write(b'content') | |
| self.assertEqual(f.name, raw.name) | |
| self.assertEqual(f.fileno(), raw.fileno()) | |
| self.assertEqual(f.mode, 'wb') | |
| with self.assertRaises(ValueError): | |
| f.name | |
| self.assertRaises(ValueError, f.fileno) | |
| fd = os.open(self.filename, os.O_WRONLY | os.O_CREAT | os.O_APPEND) | |
| with open(fd, 'ab') as raw: | |
| with BZ2File(raw, 'ab') as f: | |
| f.write(b'appendix') | |
| self.assertEqual(f.name, raw.name) | |
| self.assertEqual(f.fileno(), raw.fileno()) | |
| self.assertEqual(f.mode, 'wb') | |
| with self.assertRaises(ValueError): | |
| f.name | |
| self.assertRaises(ValueError, f.fileno) | |
| fd = os.open(self.filename, os.O_RDONLY) | |
| with open(fd, 'rb') as raw: | |
| with BZ2File(raw, 'rb') as f: | |
| self.assertEqual(f.read(), b'contentappendix') | |
| self.assertEqual(f.name, raw.name) | |
| self.assertEqual(f.fileno(), raw.fileno()) | |
| self.assertEqual(f.mode, 'rb') | |
| with self.assertRaises(ValueError): | |
| f.name | |
| self.assertRaises(ValueError, f.fileno) | |
| def testOpenBytesFilename(self): | |
| str_filename = self.filename | |
| bytes_filename = os.fsencode(str_filename) | |
| with BZ2File(bytes_filename, "wb") as f: | |
| f.write(self.DATA) | |
| self.assertEqual(f.name, bytes_filename) | |
| with BZ2File(bytes_filename, "rb") as f: | |
| self.assertEqual(f.read(), self.DATA) | |
| self.assertEqual(f.name, bytes_filename) | |
| # Sanity check that we are actually operating on the right file. | |
| with BZ2File(str_filename, "rb") as f: | |
| self.assertEqual(f.read(), self.DATA) | |
| self.assertEqual(f.name, str_filename) | |
| def testOpenPathLikeFilename(self): | |
| filename = FakePath(self.filename) | |
| with BZ2File(filename, "wb") as f: | |
| f.write(self.DATA) | |
| self.assertEqual(f.name, self.filename) | |
| with BZ2File(filename, "rb") as f: | |
| self.assertEqual(f.read(), self.DATA) | |
| self.assertEqual(f.name, self.filename) | |
| def testDecompressLimited(self): | |
| """Decompressed data buffering should be limited""" | |
| bomb = bz2.compress(b'\0' * int(2e6), compresslevel=9) | |
| self.assertLess(len(bomb), _streams.BUFFER_SIZE) | |
| decomp = BZ2File(BytesIO(bomb)) | |
| self.assertEqual(decomp.read(1), b'\0') | |
| max_decomp = 1 + DEFAULT_BUFFER_SIZE | |
| self.assertLessEqual(decomp._buffer.raw.tell(), max_decomp, | |
| "Excessive amount of data was decompressed") | |
| # Tests for a BZ2File wrapping another file object: | |
| def testReadBytesIO(self): | |
| with BytesIO(self.DATA) as bio: | |
| with BZ2File(bio) as bz2f: | |
| self.assertRaises(TypeError, bz2f.read, float()) | |
| self.assertEqual(bz2f.read(), self.TEXT) | |
| with self.assertRaises(AttributeError): | |
| bz2.name | |
| self.assertEqual(bz2f.mode, 'rb') | |
| self.assertFalse(bio.closed) | |
| def testPeekBytesIO(self): | |
| with BytesIO(self.DATA) as bio: | |
| with BZ2File(bio) as bz2f: | |
| pdata = bz2f.peek() | |
| self.assertNotEqual(len(pdata), 0) | |
| self.assertStartsWith(self.TEXT, pdata) | |
| self.assertEqual(bz2f.read(), self.TEXT) | |
| def testWriteBytesIO(self): | |
| with BytesIO() as bio: | |
| with BZ2File(bio, "w") as bz2f: | |
| self.assertRaises(TypeError, bz2f.write) | |
| bz2f.write(self.TEXT) | |
| with self.assertRaises(AttributeError): | |
| bz2.name | |
| self.assertEqual(bz2f.mode, 'wb') | |
| self.assertEqual(ext_decompress(bio.getvalue()), self.TEXT) | |
| self.assertFalse(bio.closed) | |
| def testSeekForwardBytesIO(self): | |
| with BytesIO(self.DATA) as bio: | |
| with BZ2File(bio) as bz2f: | |
| self.assertRaises(TypeError, bz2f.seek) | |
| bz2f.seek(150) | |
| self.assertEqual(bz2f.read(), self.TEXT[150:]) | |
| def testSeekBackwardsBytesIO(self): | |
| with BytesIO(self.DATA) as bio: | |
| with BZ2File(bio) as bz2f: | |
| bz2f.read(500) | |
| bz2f.seek(-150, 1) | |
| self.assertEqual(bz2f.read(), self.TEXT[500-150:]) | |
| def test_read_truncated(self): | |
| # Drop the eos_magic field (6 bytes) and CRC (4 bytes). | |
| truncated = self.DATA[:-10] | |
| with BZ2File(BytesIO(truncated)) as f: | |
| self.assertRaises(EOFError, f.read) | |
| with BZ2File(BytesIO(truncated)) as f: | |
| self.assertEqual(f.read(len(self.TEXT)), self.TEXT) | |
| self.assertRaises(EOFError, f.read, 1) | |
| # Incomplete 4-byte file header, and block header of at least 146 bits. | |
| for i in range(22): | |
| with BZ2File(BytesIO(truncated[:i])) as f: | |
| self.assertRaises(EOFError, f.read, 1) | |
| def test_issue44439(self): | |
| q = array.array('Q', [1, 2, 3, 4, 5]) | |
| LENGTH = len(q) * q.itemsize | |
| with BZ2File(BytesIO(), 'w') as f: | |
| self.assertEqual(f.write(q), LENGTH) | |
| self.assertEqual(f.tell(), LENGTH) | |
| class BZ2CompressorTest(BaseTest): | |
| def testCompress(self): | |
| bz2c = BZ2Compressor() | |
| self.assertRaises(TypeError, bz2c.compress) | |
| data = bz2c.compress(self.TEXT) | |
| data += bz2c.flush() | |
| self.assertEqual(ext_decompress(data), self.TEXT) | |
| def testCompressEmptyString(self): | |
| bz2c = BZ2Compressor() | |
| data = bz2c.compress(b'') | |
| data += bz2c.flush() | |
| self.assertEqual(data, self.EMPTY_DATA) | |
| def testCompressChunks10(self): | |
| bz2c = BZ2Compressor() | |
| n = 0 | |
| data = b'' | |
| while True: | |
| str = self.TEXT[n*10:(n+1)*10] | |
| if not str: | |
| break | |
| data += bz2c.compress(str) | |
| n += 1 | |
| data += bz2c.flush() | |
| self.assertEqual(ext_decompress(data), self.TEXT) | |
| @support.skip_if_pgo_task | |
| @bigmemtest(size=_4G + 100, memuse=2) | |
| def testCompress4G(self, size): | |
| # "Test BZ2Compressor.compress()/flush() with >4GiB input" | |
| bz2c = BZ2Compressor() | |
| data = b"x" * size | |
| try: | |
| compressed = bz2c.compress(data) | |
| compressed += bz2c.flush() | |
| finally: | |
| data = None # Release memory | |
| data = bz2.decompress(compressed) | |
| try: | |
| self.assertEqual(len(data), size) | |
| self.assertEqual(len(data.strip(b"x")), 0) | |
| finally: | |
| data = None | |
| def testPickle(self): | |
| for proto in range(pickle.HIGHEST_PROTOCOL + 1): | |
| with self.assertRaises(TypeError): | |
| pickle.dumps(BZ2Compressor(), proto) | |
| class BZ2DecompressorTest(BaseTest): | |
| def test_Constructor(self): | |
| self.assertRaises(TypeError, BZ2Decompressor, 42) | |
| def testDecompress(self): | |
| bz2d = BZ2Decompressor() | |
| self.assertRaises(TypeError, bz2d.decompress) | |
| text = bz2d.decompress(self.DATA) | |
| self.assertEqual(text, self.TEXT) | |
| def testDecompressChunks10(self): | |
| bz2d = BZ2Decompressor() | |
| text = b'' | |
| n = 0 | |
| while True: | |
| str = self.DATA[n*10:(n+1)*10] | |
| if not str: | |
| break | |
| text += bz2d.decompress(str) | |
| n += 1 | |
| self.assertEqual(text, self.TEXT) | |
| def testDecompressUnusedData(self): | |
| bz2d = BZ2Decompressor() | |
| unused_data = b"this is unused data" | |
| text = bz2d.decompress(self.DATA+unused_data) | |
| self.assertEqual(text, self.TEXT) | |
| self.assertEqual(bz2d.unused_data, unused_data) | |
| def testEOFError(self): | |
| bz2d = BZ2Decompressor() | |
| text = bz2d.decompress(self.DATA) | |
| self.assertRaises(EOFError, bz2d.decompress, b"anything") | |
| self.assertRaises(EOFError, bz2d.decompress, b"") | |
| @support.skip_if_pgo_task | |
| @bigmemtest(size=_4G + 100, memuse=3.3) | |
| def testDecompress4G(self, size): | |
| # "Test BZ2Decompressor.decompress() with >4GiB input" | |
| blocksize = min(10 * 1024 * 1024, size) | |
| block = random.randbytes(blocksize) | |
| try: | |
| data = block * ((size-1) // blocksize + 1) | |
| compressed = bz2.compress(data) | |
| bz2d = BZ2Decompressor() | |
| decompressed = bz2d.decompress(compressed) | |
| self.assertTrue(decompressed == data) | |
| finally: | |
| data = None | |
| compressed = None | |
| decompressed = None | |
| def testPickle(self): | |
| for proto in range(pickle.HIGHEST_PROTOCOL + 1): | |
| with self.assertRaises(TypeError): | |
| pickle.dumps(BZ2Decompressor(), proto) | |
| def testDecompressorChunksMaxsize(self): | |
| bzd = BZ2Decompressor() | |
| max_length = 100 | |
| out = [] | |
| # Feed some input | |
| len_ = len(self.BIG_DATA) - 64 | |
| out.append(bzd.decompress(self.BIG_DATA[:len_], | |
| max_length=max_length)) | |
| self.assertFalse(bzd.needs_input) | |
| self.assertEqual(len(out[-1]), max_length) | |
| # Retrieve more data without providing more input | |
| out.append(bzd.decompress(b'', max_length=max_length)) | |
| self.assertFalse(bzd.needs_input) | |
| self.assertEqual(len(out[-1]), max_length) | |
| # Retrieve more data while providing more input | |
| out.append(bzd.decompress(self.BIG_DATA[len_:], | |
| max_length=max_length)) | |
| self.assertLessEqual(len(out[-1]), max_length) | |
| # Retrieve remaining uncompressed data | |
| while not bzd.eof: | |
| out.append(bzd.decompress(b'', max_length=max_length)) | |
| self.assertLessEqual(len(out[-1]), max_length) | |
| out = b"".join(out) | |
| self.assertEqual(out, self.BIG_TEXT) | |
| self.assertEqual(bzd.unused_data, b"") | |
| def test_decompressor_inputbuf_1(self): | |
| # Test reusing input buffer after moving existing | |
| # contents to beginning | |
| bzd = BZ2Decompressor() | |
| out = [] | |
| # Create input buffer and fill it | |
| self.assertEqual(bzd.decompress(self.DATA[:100], | |
| max_length=0), b'') | |
| # Retrieve some results, freeing capacity at beginning | |
| # of input buffer | |
| out.append(bzd.decompress(b'', 2)) | |
| # Add more data that fits into input buffer after | |
| # moving existing data to beginning | |
| out.append(bzd.decompress(self.DATA[100:105], 15)) | |
| # Decompress rest of data | |
| out.append(bzd.decompress(self.DATA[105:])) | |
| self.assertEqual(b''.join(out), self.TEXT) | |
| def test_decompressor_inputbuf_2(self): | |
| # Test reusing input buffer by appending data at the | |
| # end right away | |
| bzd = BZ2Decompressor() | |
| out = [] | |
| # Create input buffer and empty it | |
| self.assertEqual(bzd.decompress(self.DATA[:200], | |
| max_length=0), b'') | |
| out.append(bzd.decompress(b'')) | |
| # Fill buffer with new data | |
| out.append(bzd.decompress(self.DATA[200:280], 2)) | |
| # Append some more data, not enough to require resize | |
| out.append(bzd.decompress(self.DATA[280:300], 2)) | |
| # Decompress rest of data | |
| out.append(bzd.decompress(self.DATA[300:])) | |
| self.assertEqual(b''.join(out), self.TEXT) | |
| def test_decompressor_inputbuf_3(self): | |
| # Test reusing input buffer after extending it | |
| bzd = BZ2Decompressor() | |
| out = [] | |
| # Create almost full input buffer | |
| out.append(bzd.decompress(self.DATA[:200], 5)) | |
| # Add even more data to it, requiring resize | |
| out.append(bzd.decompress(self.DATA[200:300], 5)) | |
| # Decompress rest of data | |
| out.append(bzd.decompress(self.DATA[300:])) | |
| self.assertEqual(b''.join(out), self.TEXT) | |
| def test_failure(self): | |
| bzd = BZ2Decompressor() | |
| self.assertRaises(Exception, bzd.decompress, self.BAD_DATA * 30) | |
| # Previously, a second call could crash due to internal inconsistency | |
| self.assertRaises(Exception, bzd.decompress, self.BAD_DATA * 30) | |
| def test_decompress_after_data_error(self): | |
| data = bytes.fromhex( | |
| "425a6839314159265359000000000000007fffff000000000000000000000000" | |
| "00000000000000000000000000000000000000e0370000000000000000000000" | |
| "000000000000000000000000000000000000000000000000000083f3" | |
| ) | |
| bzd = BZ2Decompressor() | |
| with self.assertRaisesRegex(OSError, "Invalid data stream"): | |
| bzd.decompress(data) | |
| # Previously, a second call could crash due to internal inconsistency | |
| self.assertFalse(bzd.needs_input) | |
| self.assertFalse(bzd.eof) | |
| with self.assertRaisesRegex(ValueError, "previous error"): | |
| bzd.decompress(b'\x00' * 18) | |
| @support.refcount_test | |
| def test_refleaks_in___init__(self): | |
| gettotalrefcount = support.get_attribute(sys, 'gettotalrefcount') | |
| bzd = BZ2Decompressor() | |
| refs_before = gettotalrefcount() | |
| for i in range(100): | |
| bzd.__init__() | |
| self.assertAlmostEqual(gettotalrefcount() - refs_before, 0, delta=10) | |
| def test_uninitialized_BZ2Decompressor_crash(self): | |
| self.assertEqual(BZ2Decompressor.__new__(BZ2Decompressor). | |
| decompress(bytes()), b'') | |
| class CompressDecompressTest(BaseTest): | |
| def testCompress(self): | |
| data = bz2.compress(self.TEXT) | |
| self.assertEqual(ext_decompress(data), self.TEXT) | |
| def testCompressEmptyString(self): | |
| text = bz2.compress(b'') | |
| self.assertEqual(text, self.EMPTY_DATA) | |
| def testDecompress(self): | |
| text = bz2.decompress(self.DATA) | |
| self.assertEqual(text, self.TEXT) | |
| def testDecompressEmpty(self): | |
| text = bz2.decompress(b"") | |
| self.assertEqual(text, b"") | |
| def testDecompressToEmptyString(self): | |
| text = bz2.decompress(self.EMPTY_DATA) | |
| self.assertEqual(text, b'') | |
| def testDecompressIncomplete(self): | |
| self.assertRaises(ValueError, bz2.decompress, self.DATA[:-10]) | |
| def testDecompressBadData(self): | |
| self.assertRaises(OSError, bz2.decompress, self.BAD_DATA) | |
| def testDecompressMultiStream(self): | |
| text = bz2.decompress(self.DATA * 5) | |
| self.assertEqual(text, self.TEXT * 5) | |
| def testDecompressTrailingJunk(self): | |
| text = bz2.decompress(self.DATA + self.BAD_DATA) | |
| self.assertEqual(text, self.TEXT) | |
| def testDecompressMultiStreamTrailingJunk(self): | |
| text = bz2.decompress(self.DATA * 5 + self.BAD_DATA) | |
| self.assertEqual(text, self.TEXT * 5) | |
| class OpenTest(BaseTest): | |
| "Test the open function." | |
| def open(self, *args, **kwargs): | |
| return bz2.open(*args, **kwargs) | |
| def test_binary_modes(self): | |
| for mode in ("wb", "xb"): | |
| if mode == "xb": | |
| unlink(self.filename) | |
| with self.open(self.filename, mode) as f: | |
| f.write(self.TEXT) | |
| with open(self.filename, "rb") as f: | |
| file_data = ext_decompress(f.read()) | |
| self.assertEqual(file_data, self.TEXT) | |
| with self.open(self.filename, "rb") as f: | |
| self.assertEqual(f.read(), self.TEXT) | |
| with self.open(self.filename, "ab") as f: | |
| f.write(self.TEXT) | |
| with open(self.filename, "rb") as f: | |
| file_data = ext_decompress(f.read()) | |
| self.assertEqual(file_data, self.TEXT * 2) | |
| def test_implicit_binary_modes(self): | |
| # Test implicit binary modes (no "b" or "t" in mode string). | |
| for mode in ("w", "x"): | |
| if mode == "x": | |
| unlink(self.filename) | |
| with self.open(self.filename, mode) as f: | |
| f.write(self.TEXT) | |
| with open(self.filename, "rb") as f: | |
| file_data = ext_decompress(f.read()) | |
| self.assertEqual(file_data, self.TEXT) | |
| with self.open(self.filename, "r") as f: | |
| self.assertEqual(f.read(), self.TEXT) | |
| with self.open(self.filename, "a") as f: | |
| f.write(self.TEXT) | |
| with open(self.filename, "rb") as f: | |
| file_data = ext_decompress(f.read()) | |
| self.assertEqual(file_data, self.TEXT * 2) | |
| def test_text_modes(self): | |
| text = self.TEXT.decode("ascii") | |
| text_native_eol = text.replace("\n", os.linesep) | |
| for mode in ("wt", "xt"): | |
| if mode == "xt": | |
| unlink(self.filename) | |
| with self.open(self.filename, mode, encoding="ascii") as f: | |
| f.write(text) | |
| with open(self.filename, "rb") as f: | |
| file_data = ext_decompress(f.read()).decode("ascii") | |
| self.assertEqual(file_data, text_native_eol) | |
| with self.open(self.filename, "rt", encoding="ascii") as f: | |
| self.assertEqual(f.read(), text) | |
| with self.open(self.filename, "at", encoding="ascii") as f: | |
| f.write(text) | |
| with open(self.filename, "rb") as f: | |
| file_data = ext_decompress(f.read()).decode("ascii") | |
| self.assertEqual(file_data, text_native_eol * 2) | |
| def test_x_mode(self): | |
| for mode in ("x", "xb", "xt"): | |
| unlink(self.filename) | |
| encoding = "utf-8" if "t" in mode else None | |
| with self.open(self.filename, mode, encoding=encoding) as f: | |
| pass | |
| with self.assertRaises(FileExistsError): | |
| with self.open(self.filename, mode) as f: | |
| pass | |
| def test_fileobj(self): | |
| with self.open(BytesIO(self.DATA), "r") as f: | |
| self.assertEqual(f.read(), self.TEXT) | |
| with self.open(BytesIO(self.DATA), "rb") as f: | |
| self.assertEqual(f.read(), self.TEXT) | |
| text = self.TEXT.decode("ascii") | |
| with self.open(BytesIO(self.DATA), "rt", encoding="utf-8") as f: | |
| self.assertEqual(f.read(), text) | |
| def test_bad_params(self): | |
| # Test invalid parameter combinations. | |
| self.assertRaises(ValueError, | |
| self.open, self.filename, "wbt") | |
| self.assertRaises(ValueError, | |
| self.open, self.filename, "xbt") | |
| self.assertRaises(ValueError, | |
| self.open, self.filename, "rb", encoding="utf-8") | |
| self.assertRaises(ValueError, | |
| self.open, self.filename, "rb", errors="ignore") | |
| self.assertRaises(ValueError, | |
| self.open, self.filename, "rb", newline="\n") | |
| def test_encoding(self): | |
| # Test non-default encoding. | |
| text = self.TEXT.decode("ascii") | |
| text_native_eol = text.replace("\n", os.linesep) | |
| with self.open(self.filename, "wt", encoding="utf-16-le") as f: | |
| f.write(text) | |
| with open(self.filename, "rb") as f: | |
| file_data = ext_decompress(f.read()).decode("utf-16-le") | |
| self.assertEqual(file_data, text_native_eol) | |
| with self.open(self.filename, "rt", encoding="utf-16-le") as f: | |
| self.assertEqual(f.read(), text) | |
| def test_encoding_error_handler(self): | |
| # Test with non-default encoding error handler. | |
| with self.open(self.filename, "wb") as f: | |
| f.write(b"foo\xffbar") | |
| with self.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). | |
| text = self.TEXT.decode("ascii") | |
| with self.open(self.filename, "wt", encoding="utf-8", newline="\n") as f: | |
| f.write(text) | |
| with self.open(self.filename, "rt", encoding="utf-8", newline="\r") as f: | |
| self.assertEqual(f.readlines(), [text]) | |
| class MiscTests(unittest.TestCase): | |
| def test_bzlib_version(self): | |
| if support.verbose: | |
| print(f'bzlib_version = {bz2.bzlib_version}', flush=True) | |
| print(f'bzlib_version_info = {bz2.bzlib_version_info}', flush=True) | |
| v = bz2.bzlib_version_info | |
| self.assertIsInstance(v[:], tuple) | |
| self.assertEqual(len(v), 3) | |
| self.assertIsInstance(v[0], int) | |
| self.assertIsInstance(v[1], int) | |
| self.assertIsInstance(v[2], int) | |
| self.assertIsInstance(v.major, int) | |
| self.assertIsInstance(v.minor, int) | |
| self.assertIsInstance(v.patch, int) | |
| self.assertEqual(v[0], v.major) | |
| self.assertEqual(v[1], v.minor) | |
| self.assertEqual(v[2], v.patch) | |
| self.assertGreaterEqual(v.major, 0) | |
| self.assertGreaterEqual(v.minor, 0) | |
| self.assertGreaterEqual(v.patch, 0) | |
| # The version string can have a suffix, e.g. "1.0.8, 13-Jul-2019" | |
| # for bzip2 or "1.1.0-libbz2-rs-sys-0.2.5" for libbz2-rs. | |
| self.assertStartsWith(bz2.bzlib_version, '%d.%d.%d' % v) | |
| def tearDownModule(): | |
| support.reap_children() | |
| if __name__ == '__main__': | |
| unittest.main() |