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74 lines
2.5 KiB
Python
74 lines
2.5 KiB
Python
#!/usr/bin/env python
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# -*- coding: utf-8 -*-
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# Stegano - Stegano is a pure Python steganography module.
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# Copyright (C) 2010-2017 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: 0.9.4 $"
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__date__ = "$Date: 2019/06/06 $"
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__revision__ = "$Date: 2019/06/06 $"
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__license__ = "GPLv3"
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import io
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import os
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import base64
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import unittest
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from unittest.mock import patch
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from stegano import lsb
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from stegano.steganalysis import parity, statistics
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from PIL import Image, ImageChops
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class TestSteganalysis(unittest.TestCase):
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def test_parity(self):
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"""Test stegano.steganalysis.parity
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"""
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text_file_to_hide = './tests/sample-files/lorem_ipsum.txt'
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with open(text_file_to_hide) as f:
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message = f.read()
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secret = lsb.hide("./tests/sample-files/Lenna.png", message)
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analysis = parity.steganalyse(secret)
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target = Image.open("./tests/expected-results/parity.png")
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diff = ImageChops.difference(target, analysis).getbbox()
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self.assertTrue(diff is None)
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def test_parity_rgba(self):
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""" Test that stegano.steganalysis.parity works with RGBA images
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"""
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img = Image.open('./tests/sample-files/transparent.png')
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analysis = parity.steganalyse(img)
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target = Image.open("./tests/expected-results/parity_rgba.png")
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diff = ImageChops.difference(target, analysis).getbbox()
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self.assertTrue(diff is None)
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def test_statistics(self):
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""" Test stegano.steganalysis.statistics
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"""
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image = Image.open("./tests/sample-files/Lenna.png")
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stats = str(statistics.steganalyse(image)) + '\n'
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file = open("./tests/expected-results/statistics")
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target = file.read()
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file.close()
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self.assertEqual(stats, target)
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if __name__ == '__main__':
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unittest.main()
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