mirror of
https://github.com/cedricbonhomme/Stegano.git
synced 2025-06-28 11:16:14 +02:00
Improved code style.
This commit is contained in:
Cédric Bonhomme
parent
9b216d9d59
commit
71f6c08c28
19 changed files with 335 additions and 253 deletions
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@ -33,96 +33,111 @@ from unittest.mock import patch
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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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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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secret = lsbset.hide(
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"./tests/sample-files/Lenna.png", "", generators.eratosthenes()
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)
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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 = lsbset.hide(
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"./tests/sample-files/Lenna.png", message, generators.eratosthenes()
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)
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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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clear_message = lsbset.reveal("./image.png", generators.eratosthenes())
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self.assertEqual(message, clear_message)
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def test_hide_and_reveal_with_ackermann(self):
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messages_to_hide = ["foo"]
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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.ackermann(m=3))
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secret = lsbset.hide(
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"./tests/sample-files/Lenna.png", message, generators.ackermann(m=3)
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)
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secret.save("./image.png")
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clear_message = lsbset.reveal("./image.png",
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generators.ackermann(m=3))
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clear_message = lsbset.reveal("./image.png", generators.ackermann(m=3))
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self.assertEqual(message, clear_message)
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def test_hide_and_reveal_with_shift(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(), 4)
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secret = lsbset.hide(
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"./tests/sample-files/Lenna.png", message, generators.eratosthenes(), 4
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)
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secret.save("./image.png")
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clear_message = lsbset.reveal("./image.png",
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generators.eratosthenes(), 4)
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clear_message = lsbset.reveal("./image.png", generators.eratosthenes(), 4)
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self.assertEqual(message, clear_message)
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def test_hide_and_reveal_UTF32LE(self):
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messages_to_hide = 'I love 🍕 and 🍫!'
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secret = lsbset.hide("./tests/sample-files/Lenna.png",
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messages_to_hide,
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generators.eratosthenes(),
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encoding='UTF-32LE')
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messages_to_hide = "I love 🍕 and 🍫!"
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secret = lsbset.hide(
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"./tests/sample-files/Lenna.png",
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messages_to_hide,
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generators.eratosthenes(),
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encoding="UTF-32LE",
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)
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secret.save("./image.png")
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clear_message = lsbset.reveal("./image.png", generators.eratosthenes(),
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encoding='UTF-32LE')
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clear_message = lsbset.reveal(
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"./image.png", generators.eratosthenes(), encoding="UTF-32LE"
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)
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self.assertEqual(messages_to_hide, clear_message)
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def test_with_transparent_png(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/transparent.png",
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message, generators.eratosthenes())
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secret = lsbset.hide(
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"./tests/sample-files/transparent.png",
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message,
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generators.eratosthenes(),
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)
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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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clear_message = lsbset.reveal("./image.png", generators.eratosthenes())
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self.assertEqual(message, clear_message)
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@patch('builtins.input', return_value='y')
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@patch("builtins.input", return_value="y")
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def test_manual_convert_rgb(self, input):
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message_to_hide = "Hello World!"
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secret = lsbset.hide("./tests/sample-files/Lenna-grayscale.png",
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message_to_hide, generators.eratosthenes())
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secret = lsbset.hide(
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"./tests/sample-files/Lenna-grayscale.png",
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message_to_hide,
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generators.eratosthenes(),
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)
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@patch('builtins.input', return_value='n')
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@patch("builtins.input", return_value="n")
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def test_refuse_convert_rgb(self, input):
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message_to_hide = "Hello World!"
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with self.assertRaises(Exception):
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secret = lsbset.hide("./tests/sample-files/Lenna-grayscale.png",
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message_to_hide, generators.eratosthenes())
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secret = lsbset.hide(
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"./tests/sample-files/Lenna-grayscale.png",
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message_to_hide,
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generators.eratosthenes(),
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)
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def test_with_location_of_image_as_argument(self):
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messages_to_hide = ["Hello World!"]
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for message in messages_to_hide:
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outputBytes = io.BytesIO()
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bytes_image = lsbset.hide("./tests/sample-files/20160505T130442.jpg", message,
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generators.identity())
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bytes_image = lsbset.hide(
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"./tests/sample-files/20160505T130442.jpg",
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message,
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generators.identity(),
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)
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bytes_image.save(outputBytes, "PNG")
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outputBytes.seek(0)
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@ -132,22 +147,27 @@ class TestLSBSet(unittest.TestCase):
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def test_auto_convert_rgb(self):
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message_to_hide = "Hello World!"
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secret = lsbset.hide("./tests/sample-files/Lenna-grayscale.png",
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message_to_hide, generators.eratosthenes(),
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auto_convert_rgb=True)
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secret = lsbset.hide(
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"./tests/sample-files/Lenna-grayscale.png",
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message_to_hide,
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generators.eratosthenes(),
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auto_convert_rgb=True,
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)
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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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message += message*2
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message += message * 2
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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.identity())
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lsbset.hide(
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"./tests/sample-files/Lenna.png", message, generators.identity()
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)
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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 = lsbset.hide(
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"./tests/sample-files/Lenna.png", message_to_hide, generators.eratosthenes()
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)
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secret.save("./image.png")
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with self.assertRaises(IndexError):
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@ -156,8 +176,11 @@ class TestLSBSet(unittest.TestCase):
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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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secret = lsbset.hide(
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"./tests/sample-files/Lenna.png",
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message_to_hide,
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generators.eratosthene(),
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)
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def tearDown(self):
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try:
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@ -166,5 +189,5 @@ class TestLSBSet(unittest.TestCase):
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pass
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if __name__ == '__main__':
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if __name__ == "__main__":
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unittest.main()
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