def test_optimized_image_should_be_smaller(self):
for ext in ['jpg', 'gif', 'tiff', 'bmp', 'svg']:
filename = self.get_test_image_path('test.%s' % ext)
dst_filename = os.path.join(tempfile.gettempdir(),
'optimized_image.%s' % ext)
result = optimize_image(filename, dst_filename)
size = os.path.getsize(filename)
if ext in ['jpg', 'png']:
self.assertTrue(result)
self.assertTrue(os.path.isfile(dst_filename),
'Output file should exist: %s' % dst_filename)
optimized_size = os.path.getsize(dst_filename)
self.assertTrue(
optimized_size < size,
'Optimized image is NOT smaller than original image: %s' %
filename)
else:
self.assertFalse(result)
self.assertFalse(
os.path.isfile(dst_filename),
'Output file should NOT exist: %s' % dst_filename)
def test_should_silently_fail_in_production_mode(self):
filename = self.get_test_image_path('test.jpg')
dst_filename = os.path.join(tempfile.gettempdir(), 'optimized.jpg')
self.assertFalse(optimize_image(filename, dst_filename))