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Diffstat (limited to 'lib/python2.7/test/test_gzip.py')
| -rw-r--r-- | lib/python2.7/test/test_gzip.py | 304 |
1 files changed, 0 insertions, 304 deletions
diff --git a/lib/python2.7/test/test_gzip.py b/lib/python2.7/test/test_gzip.py deleted file mode 100644 index a82c56e..0000000 --- a/lib/python2.7/test/test_gzip.py +++ /dev/null @@ -1,304 +0,0 @@ -#! /usr/bin/env python -"""Test script for the gzip module. -""" - -import unittest -from test import test_support -import os -import io -import struct -gzip = test_support.import_module('gzip') - -data1 = """ int length=DEFAULTALLOC, err = Z_OK; - PyObject *RetVal; - int flushmode = Z_FINISH; - unsigned long start_total_out; - -""" - -data2 = """/* zlibmodule.c -- gzip-compatible data compression */ -/* See http://www.gzip.org/zlib/ -/* See http://www.winimage.com/zLibDll for Windows */ -""" - - -class TestGzip(unittest.TestCase): - filename = test_support.TESTFN - - def setUp(self): - test_support.unlink(self.filename) - - def tearDown(self): - test_support.unlink(self.filename) - - - 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() - - 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_read_universal_newlines(self): - # Issue #5148: Reading breaks when mode contains 'U'. - self.test_write() - with gzip.GzipFile(self.filename, 'rU') as f: - d = f.read() - self.assertEqual(d, data1*50) - - 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') - f.close() - 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') - f.close() - with self.assertRaises(ValueError): - f.write('') - 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.open(self.filename, 'wb', 9) as f: - f.write('a') - for i in range(0, 200): - with gzip.open(self.filename, "ab", 9) as f: # append - f.write('a') - - # Try reading the file - with gzip.open(self.filename, "rb") as zgfile: - contents = "" - while 1: - ztxt = zgfile.read(8192) - contents += ztxt - if not ztxt: break - self.assertEqual(contents, 'a'*201) - - 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(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('GZ\n') - - def test_mode(self): - self.test_write() - with gzip.GzipFile(self.filename, 'r') as f: - self.assertEqual(f.myfileobj.mode, 'rb') - - 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_mtime(self): - mtime = 123456789 - with gzip.GzipFile(self.filename, 'w', mtime = mtime) as fWrite: - fWrite.write(data1) - with gzip.GzipFile(self.filename) as fRead: - dataRead = fRead.read() - self.assertEqual(dataRead, data1) - self.assertTrue(hasattr(fRead, 'mtime')) - 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, '\x1f\x8b') # gzip ID - - cmByte = fRead.read(1) - self.assertEqual(cmByte, '\x08') # deflate - - flagsByte = fRead.read(1) - self.assertEqual(flagsByte, '\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, '\x02') # maximum compression - - osByte = fRead.read(1) - self.assertEqual(osByte, '\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') + '\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, '\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("\x00" * 50) - - with gzip.GzipFile(self.filename, "rb") as f: - d = f.read() - self.assertEqual(d, data1 * 50, "Incorrect data in file") - - def test_fileobj_from_fdopen(self): - # Issue #13781: Creating a GzipFile using a fileobj from os.fdopen() - # should not embed the fake filename "<fdopen>" in the output file. - 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: - self.assertEqual(g.name, "") - - 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_main(verbose=None): - test_support.run_unittest(TestGzip) - -if __name__ == "__main__": - test_main(verbose=True) |