class TestFixedWidthVerticalShredMaker(unittest.TestCase):
def setUp(self):
source_path = os.path.join(
MODULE_DIR, 'assets', 'source', 'TokyoPanoramaShredded.png')
self.source_image = Image.open(source_path)
self.shred_width = 32
expected_shred_paths = \
imap(lambda x: '%s/assets/shreds/%s.png' % (MODULE_DIR, x),
range(0, 640, self.shred_width))
self.expected_shreds = imap(
lambda path: Image.open(path), expected_shred_paths)
self.shred_maker = FixedWidthVerticalShredMaker()
def test_raise_smaller_width_exception(self):
shred_width = 33
with self.assertRaises(SmallerWidthException):
shreds = self.shred_maker.get_shreds(self.source_image, shred_width)
def test_shredding(self):
shreds = self.shred_maker.get_shreds(
self.source_image, self.shred_width)
self.assertEqual(len(shreds), 20, '20 shreds was expected')
error_msg = 'shred did not match expected shred file %s'
for shred, expected_shred in izip(shreds, self.expected_shreds):
self.assertEqual(shred.tobytes(), expected_shred.tobytes(),
error_msg % expected_shred.filename)
def test_assemble(self):
assembled_image = self.shred_maker.assemble(self.expected_shreds)
self.assertEqual(
self.source_image.tobytes(), assembled_image.tobytes(),
'Reassembled image does not match original image')
def setUp(self):
source_path = os.path.join(
MODULE_DIR, 'assets', 'source', 'TokyoPanoramaShredded.png')
self.source_image = Image.open(source_path)
self.shred_width = 32
expected_shred_paths = \
imap(lambda x: '%s/assets/shreds/%s.png' % (MODULE_DIR, x),
range(0, 640, self.shred_width))
self.expected_shreds = imap(
lambda path: Image.open(path), expected_shred_paths)
self.shred_maker = FixedWidthVerticalShredMaker()