diff options
Diffstat (limited to 'Lib/test/test_bz2.py')
| -rw-r--r-- | Lib/test/test_bz2.py | 604 |
1 files changed, 486 insertions, 118 deletions
diff --git a/Lib/test/test_bz2.py b/Lib/test/test_bz2.py index 5b48e2b..f4e81db 100644 --- a/Lib/test/test_bz2.py +++ b/Lib/test/test_bz2.py @@ -1,10 +1,11 @@ #!/usr/bin/env python3 from test import support -from test.support import TESTFN, _4G, bigmemtest, findfile +from test.support import TESTFN, bigmemtest, _4G import unittest from io import BytesIO import os +import random import subprocess import sys @@ -21,12 +22,38 @@ has_cmdline_bunzip2 = sys.platform not in ("win32", "os2emx") class BaseTest(unittest.TestCase): "Base for other testcases." - TEXT = b'root:x:0:0:root:/root:/bin/bash\nbin:x:1:1:bin:/bin:\ndaemon:x:2:2:daemon:/sbin:\nadm:x:3:4:adm:/var/adm:\nlp:x:4:7:lp:/var/spool/lpd:\nsync:x:5:0:sync:/sbin:/bin/sync\nshutdown:x:6:0:shutdown:/sbin:/sbin/shutdown\nhalt:x:7:0:halt:/sbin:/sbin/halt\nmail:x:8:12:mail:/var/spool/mail:\nnews:x:9:13:news:/var/spool/news:\nuucp:x:10:14:uucp:/var/spool/uucp:\noperator:x:11:0:operator:/root:\ngames:x:12:100:games:/usr/games:\ngopher:x:13:30:gopher:/usr/lib/gopher-data:\nftp:x:14:50:FTP User:/var/ftp:/bin/bash\nnobody:x:65534:65534:Nobody:/home:\npostfix:x:100:101:postfix:/var/spool/postfix:\nniemeyer:x:500:500::/home/niemeyer:/bin/bash\npostgres:x:101:102:PostgreSQL Server:/var/lib/pgsql:/bin/bash\nmysql:x:102:103:MySQL server:/var/lib/mysql:/bin/bash\nwww:x:103:104::/var/www:/bin/false\n' + 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`' - DATA_CRLF = b'BZh91AY&SY\xaez\xbbN\x00\x01H\xdf\x80\x00\x12@\x02\xff\xf0\x01\x07n\x00?\xe7\xff\xe0@\x01\xbc\xc6`\x86*\x8d=M\xa9\x9a\x86\xd0L@\x0fI\xa6!\xa1\x13\xc8\x88jdi\x8d@\x03@\x1a\x1a\x0c\x0c\x83 \x00\xc4h2\x19\x01\x82D\x84e\t\xe8\x99\x89\x19\x1ah\x00\r\x1a\x11\xaf\x9b\x0fG\xf5(\x1b\x1f?\t\x12\xcf\xb5\xfc\x95E\x00ps\x89\x12^\xa4\xdd\xa2&\x05(\x87\x04\x98\x89u\xe40%\xb6\x19\'\x8c\xc4\x89\xca\x07\x0e\x1b!\x91UIFU%C\x994!DI\xd2\xfa\xf0\xf1N8W\xde\x13A\xf5\x9cr%?\x9f3;I45A\xd1\x8bT\xb1<l\xba\xcb_\xc00xY\x17r\x17\x88\x08\x08@\xa0\ry@\x10\x04$)`\xf2\xce\x89z\xb0s\xec\x9b.iW\x9d\x81\xb5-+t\x9f\x1a\'\x97dB\xf5x\xb5\xbe.[.\xd7\x0e\x81\xe7\x08\x1cN`\x88\x10\xca\x87\xc3!"\x80\x92R\xa1/\xd1\xc0\xe6mf\xac\xbd\x99\xcca\xb3\x8780>\xa4\xc7\x8d\x1a\\"\xad\xa1\xabyBg\x15\xb9l\x88\x88\x91k"\x94\xa4\xd4\x89\xae*\xa6\x0b\x10\x0c\xd6\xd4m\xe86\xec\xb5j\x8a\x86j\';\xca.\x01I\xf2\xaaJ\xe8\x88\x8cU+t3\xfb\x0c\n\xa33\x13r2\r\x16\xe0\xb3(\xbf\x1d\x83r\xe7M\xf0D\x1365\xd8\x88\xd3\xa4\x92\xcb2\x06\x04\\\xc1\xb0\xea//\xbek&\xd8\xe6+t\xe5\xa1\x13\xada\x16\xder5"w]\xa2i\xb7[\x97R \xe2IT\xcd;Z\x04dk4\xad\x8a\t\xd3\x81z\x10\xf1:^`\xab\x1f\xc5\xdc\x91N\x14$+\x9e\xae\xd3\x80' - with open(findfile("testbz2_bigmem.bz2"), "rb") as f: - DATA_BIGMEM = f.read() + def setUp(self): + self.filename = TESTFN + + def tearDown(self): + if os.path.isfile(self.filename): + os.unlink(self.filename) if has_cmdline_bunzip2: def decompress(self, data): @@ -47,94 +74,152 @@ class BaseTest(unittest.TestCase): def decompress(self, data): return bz2.decompress(data) - class BZ2FileTest(BaseTest): "Test BZ2File type miscellaneous methods." - def setUp(self): - self.filename = TESTFN - - def tearDown(self): - if os.path.isfile(self.filename): - os.unlink(self.filename) - - def createTempFile(self, crlf=0): + def createTempFile(self, streams=1): with open(self.filename, "wb") as f: - if crlf: - data = self.DATA_CRLF - else: - data = self.DATA - f.write(data) + f.write(self.DATA * streams) + + def testBadArgs(self): + with self.assertRaises(TypeError): + BZ2File(123.456) + with self.assertRaises(ValueError): + BZ2File("/dev/null", "z") + with self.assertRaises(ValueError): + BZ2File("/dev/null", "rx") + with self.assertRaises(ValueError): + BZ2File("/dev/null", "rbt") + with self.assertRaises(ValueError): + BZ2File("/dev/null", compresslevel=0) + with self.assertRaises(ValueError): + BZ2File("/dev/null", compresslevel=10) def testRead(self): - # "Test BZ2File.read()" self.createTempFile() with BZ2File(self.filename) as bz2f: self.assertRaises(TypeError, bz2f.read, None) self.assertEqual(bz2f.read(), self.TEXT) + def testReadMultiStream(self): + self.createTempFile(streams=5) + with BZ2File(self.filename) as bz2f: + self.assertRaises(TypeError, bz2f.read, None) + 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 = bz2._BUFFER_SIZE + bz2._BUFFER_SIZE = len(self.DATA) + try: + self.createTempFile(streams=5) + with BZ2File(self.filename) as bz2f: + self.assertRaises(TypeError, bz2f.read, None) + self.assertEqual(bz2f.read(), self.TEXT * 5) + finally: + bz2._BUFFER_SIZE = buffer_size + def testRead0(self): - # Test BBZ2File.read(0)" self.createTempFile() with BZ2File(self.filename) as bz2f: self.assertRaises(TypeError, bz2f.read, None) self.assertEqual(bz2f.read(0), b"") def testReadChunk10(self): - # "Test BZ2File.read() in chunks of 10 bytes" self.createTempFile() with BZ2File(self.filename) as bz2f: text = b'' - while 1: + 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): - # "Test BZ2File.read(100)" 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.assertTrue(self.TEXT.startswith(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): - # "Test BZ2File.readline()" self.createTempFile() with BZ2File(self.filename) as bz2f: self.assertRaises(TypeError, bz2f.readline, None) - sio = BytesIO(self.TEXT) - for line in sio.readlines(): + 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): - # "Test BZ2File.readlines()" self.createTempFile() with BZ2File(self.filename) as bz2f: self.assertRaises(TypeError, bz2f.readlines, None) - sio = BytesIO(self.TEXT) - self.assertEqual(bz2f.readlines(), sio.readlines()) + 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): - # "Test iter(BZ2File)" self.createTempFile() with BZ2File(self.filename) as bz2f: - sio = BytesIO(self.TEXT) - self.assertEqual(list(iter(bz2f)), sio.readlines()) + 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): - # "Test that iteration on a closed bz2file releases the lock." - # http://bugs.python.org/issue3309 + # Issue #3309: Iteration on a closed BZ2File should release the lock. self.createTempFile() bz2f = BZ2File(self.filename) bz2f.close() self.assertRaises(ValueError, bz2f.__next__) - # This call will deadlock of the above .__next__ call failed to + # This call will deadlock if the above .__next__ call failed to # release the lock. self.assertRaises(ValueError, bz2f.readlines) def testWrite(self): - # "Test BZ2File.write()" with BZ2File(self.filename, "w") as bz2f: self.assertRaises(TypeError, bz2f.write) bz2f.write(self.TEXT) @@ -142,10 +227,9 @@ class BZ2FileTest(BaseTest): self.assertEqual(self.decompress(f.read()), self.TEXT) def testWriteChunks10(self): - # "Test BZ2File.write() with chunks of 10 bytes" with BZ2File(self.filename, "w") as bz2f: n = 0 - while 1: + while True: str = self.TEXT[n*10:(n+1)*10] if not str: break @@ -154,13 +238,19 @@ class BZ2FileTest(BaseTest): with open(self.filename, 'rb') as f: self.assertEqual(self.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): - # "Test BZ2File.writelines()" with BZ2File(self.filename, "w") as bz2f: self.assertRaises(TypeError, bz2f.writelines) - sio = BytesIO(self.TEXT) - bz2f.writelines(sio.readlines()) - # patch #1535500 + 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(self.decompress(f.read()), self.TEXT) @@ -173,39 +263,73 @@ class BZ2FileTest(BaseTest): self.assertRaises(IOError, bz2f.write, b"a") self.assertRaises(IOError, 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(self.decompress(f.read()), self.TEXT * 2) + def testSeekForward(self): - # "Test BZ2File.seek(150, 0)" 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): - # "Test BZ2File.seek(-150, 1)" 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): - # "Test BZ2File.seek(-150, 2)" 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): - # "Test BZ2File.seek(150000)" 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): - # "Test BZ2File.seek(150000) twice" self.createTempFile() with BZ2File(self.filename) as bz2f: bz2f.seek(150000) @@ -213,27 +337,109 @@ class BZ2FileTest(BaseTest): 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): - # "Test BZ2File.seek(-150, 0)" 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(), mode="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(), mode="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(), mode="w") + try: + self.assertTrue(bz2f.writable()) + finally: + bz2f.close() + self.assertRaises(ValueError, bz2f.writable) + def testOpenDel(self): - # "Test opening and deleting a file many times" self.createTempFile() for i in range(10000): o = BZ2File(self.filename) del o def testOpenNonexistent(self): - # "Test opening a nonexistent file" self.assertRaises(IOError, BZ2File, "/non/existent") - def testBug1191043(self): - # readlines() for files containing no newline + 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) @@ -245,7 +451,6 @@ class BZ2FileTest(BaseTest): self.assertEqual(xlines, [b'Test']) def testContextProtocol(self): - # BZ2File supports the context management protocol f = None with BZ2File(self.filename, "wb") as f: f.write(b"xxx") @@ -268,7 +473,7 @@ class BZ2FileTest(BaseTest): @unittest.skipUnless(threading, 'Threading required for this test.') def testThreading(self): - # Using a BZ2File from several threads doesn't deadlock (issue #7205). + # Issue #7205: Using a BZ2File from several threads shouldn't deadlock. data = b"1" * 2**20 nthreads = 10 with bz2.BZ2File(self.filename, 'wb') as f: @@ -281,22 +486,98 @@ class BZ2FileTest(BaseTest): for t in threads: t.join() - def testMixedIterationReads(self): - # Issue #8397: mixed iteration and reads should be forbidden. - with bz2.BZ2File(self.filename, 'wb') as f: - # The internal buffer size is hard-wired to 8192 bytes, we must - # write out more than that for the test to stop half through - # the buffer. - f.write(self.TEXT * 100) - with bz2.BZ2File(self.filename, 'rb') as f: - next(f) - self.assertRaises(ValueError, f.read) - self.assertRaises(ValueError, f.readline) - self.assertRaises(ValueError, f.readlines) + def testWithoutThreading(self): + bz2 = support.import_fresh_module("bz2", blocked=("threading",)) + with bz2.BZ2File(self.filename, "wb") as f: + f.write(b"abc") + with bz2.BZ2File(self.filename, "rb") as f: + self.assertEqual(f.read(), b"abc") + + def testMixedIterationAndReads(self): + self.createTempFile() + linelen = len(self.TEXT_LINES[0]) + halflen = linelen // 2 + with bz2.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 bz2.BZ2File(self.filename) as bz2f: + bz2f.readline() + self.assertEqual(next(bz2f), self.TEXT_LINES[1]) + self.assertEqual(bz2f.readline(), self.TEXT_LINES[2]) + with bz2.BZ2File(self.filename) as bz2f: + bz2f.readlines() + with 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 testOpenBytesFilename(self): + str_filename = self.filename + try: + bytes_filename = str_filename.encode("ascii") + except UnicodeEncodeError: + self.skipTest("Temporary file name needs to be ASCII") + with BZ2File(bytes_filename, "wb") as f: + f.write(self.DATA) + with BZ2File(bytes_filename, "rb") as f: + self.assertEqual(f.read(), self.DATA) + # Sanity check that we are actually operating on the right file. + with BZ2File(str_filename, "rb") as f: + self.assertEqual(f.read(), self.DATA) + + + # 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, None) + self.assertEqual(bz2f.read(), self.TEXT) + 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.assertTrue(self.TEXT.startswith(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) + self.assertEqual(self.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:]) class BZ2CompressorTest(BaseTest): def testCompress(self): - # "Test BZ2Compressor.compress()/flush()" bz2c = BZ2Compressor() self.assertRaises(TypeError, bz2c.compress) data = bz2c.compress(self.TEXT) @@ -304,11 +585,10 @@ class BZ2CompressorTest(BaseTest): self.assertEqual(self.decompress(data), self.TEXT) def testCompressChunks10(self): - # "Test BZ2Compressor.compress()/flush() with chunks of 10 bytes" bz2c = BZ2Compressor() n = 0 data = b'' - while 1: + while True: str = self.TEXT[n*10:(n+1)*10] if not str: break @@ -317,34 +597,38 @@ class BZ2CompressorTest(BaseTest): data += bz2c.flush() self.assertEqual(self.decompress(data), self.TEXT) - @bigmemtest(size=_4G, memuse=1.25) - def testBigmem(self, size): - text = b"a" * size - bz2c = bz2.BZ2Compressor() - data = bz2c.compress(text) + bz2c.flush() - del text - text = self.decompress(data) - self.assertEqual(len(text), size) - self.assertEqual(text.strip(b"a"), b"") - + @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 class BZ2DecompressorTest(BaseTest): def test_Constructor(self): self.assertRaises(TypeError, BZ2Decompressor, 42) def testDecompress(self): - # "Test BZ2Decompressor.decompress()" bz2d = BZ2Decompressor() self.assertRaises(TypeError, bz2d.decompress) text = bz2d.decompress(self.DATA) self.assertEqual(text, self.TEXT) def testDecompressChunks10(self): - # "Test BZ2Decompressor.decompress() with chunks of 10 bytes" bz2d = BZ2Decompressor() text = b'' n = 0 - while 1: + while True: str = self.DATA[n*10:(n+1)*10] if not str: break @@ -353,7 +637,6 @@ class BZ2DecompressorTest(BaseTest): self.assertEqual(text, self.TEXT) def testDecompressUnusedData(self): - # "Test BZ2Decompressor.decompress() with unused data" bz2d = BZ2Decompressor() unused_data = b"this is unused data" text = bz2d.decompress(self.DATA+unused_data) @@ -361,68 +644,153 @@ class BZ2DecompressorTest(BaseTest): self.assertEqual(bz2d.unused_data, unused_data) def testEOFError(self): - # "Calling BZ2Decompressor.decompress() after EOS must raise EOFError" bz2d = BZ2Decompressor() text = bz2d.decompress(self.DATA) self.assertRaises(EOFError, bz2d.decompress, b"anything") self.assertRaises(EOFError, bz2d.decompress, b"") - @bigmemtest(size=_4G, memuse=1.25, dry_run=False) - def testBigmem(self, unused_size): - # Issue #14398: decompression fails when output data is >=2GB. - text = bz2.BZ2Decompressor().decompress(self.DATA_BIGMEM) - self.assertEqual(len(text), _4G) - self.assertEqual(text.strip(b"\0"), b"") - - -class FuncTest(BaseTest): - "Test module functions" - + @bigmemtest(size=_4G + 100, memuse=3) + def testDecompress4G(self, size): + # "Test BZ2Decompressor.decompress() with >4GiB input" + blocksize = 10 * 1024 * 1024 + block = random.getrandbits(blocksize * 8).to_bytes(blocksize, 'little') + try: + data = block * (size // blocksize + 1) + compressed = bz2.compress(data) + bz2d = BZ2Decompressor() + decompressed = bz2d.decompress(compressed) + self.assertTrue(decompressed == data) + finally: + data = None + compressed = None + decompressed = None + + +class CompressDecompressTest(BaseTest): def testCompress(self): - # "Test compress() function" data = bz2.compress(self.TEXT) self.assertEqual(self.decompress(data), self.TEXT) def testDecompress(self): - # "Test decompress() function" text = bz2.decompress(self.DATA) self.assertEqual(text, self.TEXT) def testDecompressEmpty(self): - # "Test decompress() function with empty string" text = bz2.decompress(b"") self.assertEqual(text, b"") def testDecompressIncomplete(self): - # "Test decompress() function with incomplete data" self.assertRaises(ValueError, bz2.decompress, self.DATA[:-10]) - @bigmemtest(size=_4G, memuse=1.25) - def testCompressBigmem(self, size): - text = b"a" * size - data = bz2.compress(text) - del text - text = self.decompress(data) - self.assertEqual(len(text), size) - self.assertEqual(text.strip(b"a"), b"") - - @bigmemtest(size=_4G, memuse=1.25, dry_run=False) - def testDecompressBigmem(self, unused_size): - # Issue #14398: decompression fails when output data is >=2GB. - text = bz2.decompress(self.DATA_BIGMEM) - self.assertEqual(len(text), _4G) - self.assertEqual(text.strip(b"\0"), b"") + def testDecompressMultiStream(self): + text = bz2.decompress(self.DATA * 5) + self.assertEqual(text, self.TEXT * 5) + + +class OpenTest(BaseTest): + def test_binary_modes(self): + with bz2.open(self.filename, "wb") as f: + f.write(self.TEXT) + with open(self.filename, "rb") as f: + file_data = bz2.decompress(f.read()) + self.assertEqual(file_data, self.TEXT) + with bz2.open(self.filename, "rb") as f: + self.assertEqual(f.read(), self.TEXT) + with bz2.open(self.filename, "ab") as f: + f.write(self.TEXT) + with open(self.filename, "rb") as f: + file_data = bz2.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). + with bz2.open(self.filename, "w") as f: + f.write(self.TEXT) + with open(self.filename, "rb") as f: + file_data = bz2.decompress(f.read()) + self.assertEqual(file_data, self.TEXT) + with bz2.open(self.filename, "r") as f: + self.assertEqual(f.read(), self.TEXT) + with bz2.open(self.filename, "a") as f: + f.write(self.TEXT) + with open(self.filename, "rb") as f: + file_data = bz2.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) + with bz2.open(self.filename, "wt") as f: + f.write(text) + with open(self.filename, "rb") as f: + file_data = bz2.decompress(f.read()).decode("ascii") + self.assertEqual(file_data, text_native_eol) + with bz2.open(self.filename, "rt") as f: + self.assertEqual(f.read(), text) + with bz2.open(self.filename, "at") as f: + f.write(text) + with open(self.filename, "rb") as f: + file_data = bz2.decompress(f.read()).decode("ascii") + self.assertEqual(file_data, text_native_eol * 2) + + def test_fileobj(self): + with bz2.open(BytesIO(self.DATA), "r") as f: + self.assertEqual(f.read(), self.TEXT) + with bz2.open(BytesIO(self.DATA), "rb") as f: + self.assertEqual(f.read(), self.TEXT) + text = self.TEXT.decode("ascii") + with bz2.open(BytesIO(self.DATA), "rt") as f: + self.assertEqual(f.read(), text) + + def test_bad_params(self): + # Test invalid parameter combinations. + with self.assertRaises(ValueError): + bz2.open(self.filename, "wbt") + with self.assertRaises(ValueError): + bz2.open(self.filename, "rb", encoding="utf-8") + with self.assertRaises(ValueError): + bz2.open(self.filename, "rb", errors="ignore") + with self.assertRaises(ValueError): + bz2.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 bz2.open(self.filename, "wt", encoding="utf-16-le") as f: + f.write(text) + with open(self.filename, "rb") as f: + file_data = bz2.decompress(f.read()).decode("utf-16-le") + self.assertEqual(file_data, text_native_eol) + with bz2.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 bz2.open(self.filename, "wb") as f: + f.write(b"foo\xffbar") + with bz2.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 bz2.open(self.filename, "wt", newline="\n") as f: + f.write(text) + with bz2.open(self.filename, "rt", newline="\r") as f: + self.assertEqual(f.readlines(), [text]) + def test_main(): support.run_unittest( BZ2FileTest, BZ2CompressorTest, BZ2DecompressorTest, - FuncTest + CompressDecompressTest, + OpenTest, ) support.reap_children() if __name__ == '__main__': test_main() - -# vim:ts=4:sw=4 |