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#!/usr/bin/env python
"""Unit tests for M2Crypto.BIO.IOBuffer.
Copyright (c) 2000 Ng Pheng Siong. All rights reserved."""
from io import BytesIO
from M2Crypto.BIO import IOBuffer, MemoryBuffer
from tests import unittest
class IOBufferTestCase(unittest.TestCase):
def setUp(self):
self._data = b'abcdef\n'
self.data = self._data * 1024
def tearDown(self):
pass
def test_init_empty(self):
mb = MemoryBuffer()
io = IOBuffer(mb)
out = io.read()
self.assertEqual(out, b'')
def test_init_something(self):
mb = MemoryBuffer(self.data)
io = IOBuffer(mb)
out = io.read(len(self.data))
self.assertEqual(out, self.data)
def test_read_less_than(self):
chunk = len(self.data) - 7
mb = MemoryBuffer(self.data)
io = IOBuffer(mb)
out = io.read(chunk)
self.assertEqual(out, self.data[:chunk])
def test_read_more_than(self):
chunk = len(self.data) + 8
mb = MemoryBuffer(self.data)
io = IOBuffer(mb)
out = io.read(chunk)
self.assertEqual(out, self.data)
def test_readline(self):
buf = BytesIO()
mb = MemoryBuffer(self.data)
io = IOBuffer(mb)
while 1:
out = io.readline()
if not out:
break
buf.write(out)
self.assertEqual(out, self._data)
self.assertEqual(buf.getvalue(), self.data)
def test_readlines(self):
buf = BytesIO()
mb = MemoryBuffer(self.data)
io = IOBuffer(mb)
lines = io.readlines()
for line in lines:
self.assertEqual(line, self._data)
buf.write(line)
self.assertEqual(buf.getvalue(), self.data)
def test_closed(self):
mb = MemoryBuffer(self.data)
io = IOBuffer(mb)
io.close()
with self.assertRaises(IOError):
io.write(self.data)
assert not io.readable() and not io.writeable()
def test_read_only(self):
mb = MemoryBuffer(self.data)
io = IOBuffer(mb, mode='r')
with self.assertRaises(IOError):
io.write(self.data)
assert not io.writeable()
def suite():
return unittest.makeSuite(IOBufferTestCase)
if __name__ == '__main__':
unittest.TextTestRunner().run(suite())
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