Staging
v0.5.1
v0.5.1
https://github.com/python/cpython
Tip revision: 74f4bd53e03ded8408bcc2de67cf0f5a4ac5b1a1 authored by Barry Warsaw on 23 February 2012, 15:59:38 UTC
Bump some more copyright years (as per PEP 101), since this is the first
Bump some more copyright years (as per PEP 101), since this is the first
Tip revision: 74f4bd5
test_gzip.py
#! /usr/bin/env python
"""Test script for the gzip module.
"""
import unittest
from test import test_support
import os
import 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):
f = gzip.GzipFile(self.filename, 'wb') ; 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.
f = gzip.GzipFile(self.filename, 'r') ; d = f.read() ; f.close()
self.assertEqual(d, data1*50)
def test_append(self):
self.test_write()
# Append to the previous file
f = gzip.GzipFile(self.filename, 'ab') ; f.write(data2 * 15) ; f.close()
f = gzip.GzipFile(self.filename, 'rb') ; d = f.read() ; f.close()
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.
f = gzip.open(self.filename, 'wb', 9)
f.write('a')
f.close()
for i in range(0,200):
f = gzip.open(self.filename, "ab", 9) # append
f.write('a')
f.close()
# Try reading the file
zgfile = gzip.open(self.filename, "rb")
contents = ""
while 1:
ztxt = zgfile.read(8192)
contents += ztxt
if not ztxt: break
zgfile.close()
self.assertEquals(contents, 'a'*201)
def test_readline(self):
self.test_write()
# Try .readline() with varying line lengths
f = gzip.GzipFile(self.filename, 'rb')
line_length = 0
while 1:
L = f.readline(line_length)
if L == "" and line_length != 0: break
self.assert_(len(L) <= line_length)
line_length = (line_length + 1) % 50
f.close()
def test_readlines(self):
self.test_write()
# Try .readlines()
f = gzip.GzipFile(self.filename, 'rb')
L = f.readlines()
f.close()
f = gzip.GzipFile(self.filename, 'rb')
while 1:
L = f.readlines(150)
if L == []: break
f.close()
def test_seek_read(self):
self.test_write()
# Try seek, read test
f = gzip.GzipFile(self.filename)
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
f.close()
def test_seek_whence(self):
self.test_write()
# Try seek(whence=1), read test
f = gzip.GzipFile(self.filename)
f.read(10)
f.seek(10, whence=1)
y = f.read(10)
f.close()
self.assertEquals(y, data1[20:30])
def test_seek_write(self):
# Try seek, write test
f = gzip.GzipFile(self.filename, 'w')
for pos in range(0, 256, 16):
f.seek(pos)
f.write('GZ\n')
f.close()
def test_mode(self):
self.test_write()
f = gzip.GzipFile(self.filename, 'r')
self.assertEqual(f.myfileobj.mode, 'rb')
f.close()
def test_1647484(self):
for mode in ('wb', 'rb'):
f = gzip.GzipFile(self.filename, mode)
self.assert_(hasattr(f, "name"))
self.assertEqual(f.name, self.filename)
f.close()
def test_main(verbose=None):
test_support.run_unittest(TestGzip)
if __name__ == "__main__":
test_main(verbose=True)