Test suit
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#!/usr/bin/python
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# -*- coding: utf-8 -*-
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"""
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gcp: Goffi's CoPier
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Copyright (C) 2010, 2011 Jérôme Poisson <goffi@goffi.org>
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(c) 2011 Thomas Preud'homme <robotux@celest.fr>
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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"""
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from __future__ import with_statement
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import tempfile
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import unittest
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from os import getcwd, chdir, system
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from shutil import rmtree
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from random import randrange
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from hashlib import sha1
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#size shorcuts
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S10K = 1024 * 10
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S100K = 1024 * 100
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S1M = 1024 * 1024
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S10M = 1024 * 1024 * 10
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S100M = 1024 * 1024 * 100
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def sha1sum(filename, buf_size=4096):
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csum = sha1()
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with open(filename) as fd:
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data = fd.read(buf_size)
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while data:
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csum.update(data)
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data = fd.read(buf_size)
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return csum.digest()
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#def makeRandomFile(path, size, buf_size=4096):
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# """Create a fake file
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# @param path: where the file is created
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# @param size: size of the file to create in bytes"""
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# def seq(size):
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# return ''.join(chr(randrange(256)) for i in range(size))
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# fd = open(path, 'w')
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# for byte in range(size//buf_size):
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# fd.write(seq(buf_size))
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# fd.write(seq(size%buf_size))
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# fd.close()
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def makeRandomFile(path, size, buf_size=4096):
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"""Create a fake file using /dev/urandom
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@param path: where the file is created
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@param size: size of the file to create in bytes"""
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source = open('/dev/urandom','r')
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dest = open(path, 'w')
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for byte in range(size//buf_size):
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dest.write(source.read(buf_size))
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dest.write(source.read(size%buf_size))
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dest.close()
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class TestCopyCases(unittest.TestCase):
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"""Test basic copy use cases, using gcp externally
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gcp must be available in the PATH"""
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#TODO: check journal
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def setUp(self):
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self.ori_dir = getcwd()
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self.tmp_dir = tempfile.mkdtemp()
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chdir(self.tmp_dir)
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def tearDown(self):
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chdir(self.ori_dir)
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rmtree(self.tmp_dir)
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def test_one_file_copy(self):
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"""Copy one file and test the result"""
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makeRandomFile('file_1', S10K)
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ori_sum = sha1sum('file_1')
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ret = system("gcp file_1 file_2")
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self.assertEqual(ret,0)
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dest_sum = sha1sum('file_2')
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self.assertEqual(ori_sum, dest_sum)
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def test_one_file_copy_already_exists(self):
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"""Check that an existing file is not overwritten"""
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makeRandomFile('file_1', S10K)
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makeRandomFile('file_2', S10K)
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file_2_sum = sha1sum('file_2')
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ret = system("gcp file_1 file_2")
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self.assertNotEqual(ret,0)
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file_2_sum_bis = sha1sum('file_2')
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self.assertEqual(file_2_sum, file_2_sum_bis)
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def test_one_file_copy_already_exists_force(self):
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"""Check that an existing file is overwritten with --force"""
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makeRandomFile('file_1', S10K)
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makeRandomFile('file_2', S10K)
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file_1_sum = sha1sum('file_1')
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ret = system("gcp -f file_1 file_2")
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self.assertEqual(ret,0)
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file_2_sum_bis = sha1sum('file_2')
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self.assertEqual(file_1_sum, file_2_sum_bis)
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if __name__ == '__main__':
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unittest.main()
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