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#!/usr/bin/python -t
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2.1 of the License, or (at your option) any later version.
#
# This library is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this library; if not, write to the
# Free Software Foundation, Inc.,
# 59 Temple Place, Suite 330,
# Boston, MA 02111-1307 USA
# This file is part of urlgrabber, a high-level cross-protocol url-grabber
# Copyright 2002-2004 Michael D. Stenner, Ryan Tomayko
"""byterange.py tests"""
# $Id: test_byterange.py,v 1.6 2004/03/31 17:02:00 mstenner Exp $
import sys
from StringIO import StringIO
from urlgrabber.byterange import RangeableFileObject
from base_test_code import *
class RangeableFileObjectTestCase(TestCase):
"""Test range.RangeableFileObject class"""
def setUp(self):
# 0 1 2 3 4 5 6 7 8 9
# 0123456789012345678901234567890123456789012345678901234567 890123456789012345678901234567890
self.test = 'Why cannot we write the entire 24 volumes of Encyclopaedia\nBrittanica on the head of a pin?\n'
self.fo = StringIO(self.test)
self.rfo = RangeableFileObject(self.fo, (20,69))
def tearDown(self):
pass
def test_seek(self):
"""RangeableFileObject.seek()"""
self.rfo.seek(11)
self.assertEquals('24', self.rfo.read(2))
self.rfo.seek(14)
self.assertEquals('volumes', self.rfo.read(7))
self.rfo.seek(1,1)
self.assertEquals('of', self.rfo.read(2))
def test_poor_mans_seek(self):
"""RangeableFileObject.seek() poor mans version..
We just delete the seek method from StringIO so we can
excercise RangeableFileObject when the file object supplied
doesn't support seek.
"""
seek = StringIO.seek
del(StringIO.seek)
self.test_seek()
StringIO.seek = seek
def test_read(self):
"""RangeableFileObject.read()"""
self.assertEquals('the', self.rfo.read(3))
self.assertEquals(' entire 24 volumes of ', self.rfo.read(22))
self.assertEquals('Encyclopaedia\nBrittanica', self.rfo.read(50))
self.assertEquals('', self.rfo.read())
def test_readall(self):
"""RangeableFileObject.read(): to end of file."""
rfo = RangeableFileObject(StringIO(self.test),(11,))
self.assertEquals(self.test[11:],rfo.read())
def test_readline(self):
"""RangeableFileObject.readline()"""
self.assertEquals('the entire 24 volumes of Encyclopaedia\n', self.rfo.readline())
self.assertEquals('Brittanica', self.rfo.readline())
self.assertEquals('', self.rfo.readline())
def test_tell(self):
"""RangeableFileObject.tell()"""
self.assertEquals(0,self.rfo.tell())
self.rfo.read(5)
self.assertEquals(5,self.rfo.tell())
self.rfo.readline()
self.assertEquals(39,self.rfo.tell())
class RangeModuleTestCase(TestCase):
"""Test module level functions defined in range.py"""
def setUp(self):
pass
def tearDown(self):
pass
def test_range_tuple_normalize(self):
"""byterange.range_tuple_normalize()"""
from urlgrabber.byterange import range_tuple_normalize
from urlgrabber.byterange import RangeError
tests = (
((None,50), (0,50)),
((500,600), (500,600)),
((500,), (500,'')),
((500,None), (500,'')),
(('',''), None),
((0,), None),
(None, None)
)
for test, ex in tests:
self.assertEquals( range_tuple_normalize(test), ex )
try: range_tuple_normalize( (10,8) )
except RangeError: pass
else: self.fail("range_tuple_normalize( (10,8) ) should have raised RangeError")
def test_range_header_to_tuple(self):
"""byterange.range_header_to_tuple()"""
from urlgrabber.byterange import range_header_to_tuple
tests = (
('bytes=500-600', (500,601)),
('bytes=500-', (500,'')),
('bla bla', ()),
(None, None)
)
for test, ex in tests:
self.assertEquals( range_header_to_tuple(test), ex )
def test_range_tuple_to_header(self):
"""byterange.range_tuple_to_header()"""
from urlgrabber.byterange import range_tuple_to_header
tests = (
((500,600), 'bytes=500-599'),
((500,''), 'bytes=500-'),
((500,), 'bytes=500-'),
((None,500), 'bytes=0-499'),
(('',500), 'bytes=0-499'),
(None, None),
)
for test, ex in tests:
self.assertEquals( range_tuple_to_header(test), ex )
try: range_tuple_to_header( ('not an int',500) )
except ValueError: pass
else: self.fail("range_tuple_to_header( ('not an int',500) ) should have raised ValueError")
try: range_tuple_to_header( (0,'not an int') )
except ValueError: pass
else: self.fail("range_tuple_to_header( (0, 'not an int') ) should have raised ValueError")
def suite():
tl = TestLoader()
return tl.loadTestsFromModule(sys.modules[__name__])
if __name__ == '__main__':
runner = TextTestRunner(stream=sys.stdout,descriptions=1,verbosity=2)
runner.run(suite())
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