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86 lines
3 KiB
Python
86 lines
3 KiB
Python
#!/usr/bin/env python
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#-*- coding: utf-8 -*-
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# Stéganô - Stéganô is a basic Python Steganography module.
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# Copyright (C) 2010-2016 Cédric Bonhomme - https://www.cedricbonhomme.org
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#
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# For more information : https://github.com/cedricbonhomme/Stegano
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#
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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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#
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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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#
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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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__author__ = "Cedric Bonhomme"
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__version__ = "$Revision: 0.2 $"
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__date__ = "$Date: 2016/04/13 $"
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__revision__ = "$Date: 2016/05/22 $"
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__license__ = "GPLv3"
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import os
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import unittest
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from stegano import lsbset
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from stegano.lsbset import generators
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class TestLSBSet(unittest.TestCase):
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def test_hide_empty_message(self):
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"""
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Test hiding the empty string.
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"""
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with self.assertRaises(AssertionError):
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secret = lsbset.hide("./tests/sample-files/Lenna.png", "",
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generators.eratosthenes())
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def test_hide_and_reveal(self):
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messages_to_hide = ["a", "foo", "Hello World!", ":Python:"]
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for message in messages_to_hide:
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secret = lsbset.hide("./tests/sample-files/Lenna.png", message,
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generators.eratosthenes())
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secret.save("./image.png")
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clear_message = lsbset.reveal("./image.png",
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generators.eratosthenes())
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self.assertEqual(message, clear_message)
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def test_with_too_long_message(self):
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with open("./tests/sample-files/lorem_ipsum.txt") as f:
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message = f.read()
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with self.assertRaises(Exception):
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lsbset.hide("./tests/sample-files/Lenna.png", message,
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generators.eratosthenes())
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def test_hide_and_reveal_with_bad_generator(self):
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message_to_hide = "Hello World!"
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secret = lsbset.hide("./tests/sample-files/Lenna.png", message_to_hide,
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generators.eratosthenes())
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secret.save("./image.png")
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with self.assertRaises(IndexError):
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clear_message = lsbset.reveal("./image.png", generators.identity())
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def test_with_unknown_generator(self):
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message_to_hide = "Hello World!"
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with self.assertRaises(AttributeError):
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secret = lsbset.hide("./tests/sample-files/Lenna.png",
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message_to_hide, generators.eratosthene())
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def tearDown(self):
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try:
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os.unlink("./image.png")
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except:
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pass
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if __name__ == '__main__':
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unittest.main()
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