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test_imaging.py
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Tue, Mar 31, 10:32 PM

test_imaging.py

import pathlib
import shutil
import tempfile
from pillar.tests import AbstractPillarTest
class ThumbnailTest(AbstractPillarTest):
@classmethod
def setUpClass(cls):
super().setUpClass()
cls.image_path = pathlib.Path(__file__).with_name('images')
def setUp(self, **kwargs):
super().setUp(**kwargs)
self._tmp = tempfile.TemporaryDirectory()
self.tmp = pathlib.Path(self._tmp.name)
def tearDown(self):
super().tearDown()
self._tmp.cleanup()
def _tmpcopy(self, image_fname: str) -> pathlib.Path:
src = self.image_path / image_fname
dst = self.tmp / image_fname
shutil.copy(str(src), str(dst))
return dst
def _thumb_test(self, source):
from PIL import Image
from pillar.api.utils import imaging
with self.app.app_context():
# Almost same as in production, but less different sizes.
self.app.config['UPLOADS_LOCAL_STORAGE_THUMBNAILS'] = {
's': {'size': (90, 90), 'crop': True},
'b': {'size': (160, 160), 'crop': True},
't': {'size': (160, 160), 'crop': False},
'm': {'size': (320, 320), 'crop': False},
}
thumbs = imaging.generate_local_thumbnails('มัสมั่น', source)
# Remove the length field, it is can be hard to predict.
for t in thumbs:
t.pop('length')
# Verify that the images can be loaded and have the advertised size.
for t in thumbs:
local_path = pathlib.Path(t['local_path'])
im = Image.open(local_path)
self.assertEqual((t['width'], t['height']), im.size)
return thumbs
def test_thumbgen_jpg(self):
source = self._tmpcopy('512x512-8bit-rgb.jpg')
thumbs = self._thumb_test(source)
self.assertEqual(
[
{'size': 's',
'file_path': 'มัสมั่น-s.jpg',
'local_path': str(source.with_name('512x512-8bit-rgb-s.jpg')),
'width': 90, 'height': 90,
'md5': '',
'content_type': 'image/jpeg'},
{'size': 'b',
'file_path': 'มัสมั่น-b.jpg',
'local_path': str(source.with_name('512x512-8bit-rgb-b.jpg')),
'width': 160, 'height': 160,
'md5': '',
'content_type': 'image/jpeg'},
{'size': 't',
'file_path': 'มัสมั่น-t.jpg',
'local_path': str(source.with_name('512x512-8bit-rgb-t.jpg')),
'width': 160, 'height': 160,
'md5': '',
'content_type': 'image/jpeg',
'is_public': True},
{'size': 'm',
'file_path': 'มัสมั่น-m.jpg',
'local_path': str(source.with_name('512x512-8bit-rgb-m.jpg')),
'width': 320, 'height': 320,
'md5': '',
'content_type': 'image/jpeg'},
],
thumbs)
def test_thumbgen_vertical(self):
source = self._tmpcopy('300x512-8bit-rgb.jpg')
thumbs = self._thumb_test(source)
self.assertEqual(
[
{'size': 's',
'file_path': 'มัสมั่น-s.jpg',
'local_path': str(source.with_name('300x512-8bit-rgb-s.jpg')),
'width': 90, 'height': 90,
'md5': '',
'content_type': 'image/jpeg'},
{'size': 'b',
'file_path': 'มัสมั่น-b.jpg',
'local_path': str(source.with_name('300x512-8bit-rgb-b.jpg')),
'width': 160, 'height': 160,
'md5': '',
'content_type': 'image/jpeg'},
{'size': 't',
'file_path': 'มัสมั่น-t.jpg',
'local_path': str(source.with_name('300x512-8bit-rgb-t.jpg')),
'width': 93, 'height': 160,
'md5': '',
'content_type': 'image/jpeg',
'is_public': True},
{'size': 'm',
'file_path': 'มัสมั่น-m.jpg',
'local_path': str(source.with_name('300x512-8bit-rgb-m.jpg')),
'width': 187, 'height': 320,
'md5': '',
'content_type': 'image/jpeg'},
],
thumbs)
def test_thumbgen_png_alpha(self):
source = self._tmpcopy('512x512-8bit-rgba.png')
thumbs = self._thumb_test(source)
self.assertEqual(
[
{'size': 's',
'file_path': 'มัสมั่น-s.png',
'local_path': str(source.with_name('512x512-8bit-rgba-s.png')),
'width': 90, 'height': 90,
'md5': '',
'content_type': 'image/png'},
{'size': 'b',
'file_path': 'มัสมั่น-b.png',
'local_path': str(source.with_name('512x512-8bit-rgba-b.png')),
'width': 160, 'height': 160,
'md5': '',
'content_type': 'image/png'},
{'size': 't',
'file_path': 'มัสมั่น-t.png',
'local_path': str(source.with_name('512x512-8bit-rgba-t.png')),
'width': 160, 'height': 160,
'md5': '',
'content_type': 'image/png',
'is_public': True},
{'size': 'm',
'file_path': 'มัสมั่น-m.png',
'local_path': str(source.with_name('512x512-8bit-rgba-m.png')),
'width': 320, 'height': 320,
'md5': '',
'content_type': 'image/png'},
],
thumbs)
def test_thumbgen_png_greyscale_alpha(self):
source = self._tmpcopy('512x512-8bit-grey-alpha.png')
thumbs = self._thumb_test(source)
self.assertEqual(
[
{'size': 's',
'file_path': 'มัสมั่น-s.png',
'local_path': str(source.with_name('512x512-8bit-grey-alpha-s.png')),
'width': 90, 'height': 90,
'md5': '',
'content_type': 'image/png'},
{'size': 'b',
'file_path': 'มัสมั่น-b.png',
'local_path': str(source.with_name('512x512-8bit-grey-alpha-b.png')),
'width': 160, 'height': 160,
'md5': '',
'content_type': 'image/png'},
{'size': 't',
'file_path': 'มัสมั่น-t.png',
'local_path': str(source.with_name('512x512-8bit-grey-alpha-t.png')),
'width': 160, 'height': 160,
'md5': '',
'content_type': 'image/png',
'is_public': True},
{'size': 'm',
'file_path': 'มัสมั่น-m.png',
'local_path': str(source.with_name('512x512-8bit-grey-alpha-m.png')),
'width': 320, 'height': 320,
'md5': '',
'content_type': 'image/png'},
],
thumbs)
def test_thumbgen_png_16bit(self):
source = self._tmpcopy('512x256-16bit-rgb.png')
thumbs = self._thumb_test(source)
self.assertEqual(
[
{'size': 's',
'file_path': 'มัสมั่น-s.png',
'local_path': str(source.with_name('512x256-16bit-rgb-s.png')),
'width': 90, 'height': 90,
'md5': '',
'content_type': 'image/png'},
{'size': 'b',
'file_path': 'มัสมั่น-b.png',
'local_path': str(source.with_name('512x256-16bit-rgb-b.png')),
'width': 160, 'height': 160,
'md5': '',
'content_type': 'image/png'},
{'size': 't',
'file_path': 'มัสมั่น-t.png',
'local_path': str(source.with_name('512x256-16bit-rgb-t.png')),
'width': 160, 'height': 80,
'md5': '',
'content_type': 'image/png',
'is_public': True},
{'size': 'm',
'file_path': 'มัสมั่น-m.png',
'local_path': str(source.with_name('512x256-16bit-rgb-m.png')),
'width': 320, 'height': 160,
'md5': '',
'content_type': 'image/png'},
],
thumbs)
def test_thumbgen_png_16bit_grey(self):
source = self._tmpcopy('512x256-16bit-grey.png')
thumbs = self._thumb_test(source)
self.assertEqual(
[
{'size': 's',
'file_path': 'มัสมั่น-s.jpg',
'local_path': str(source.with_name('512x256-16bit-grey-s.jpg')),
'width': 90, 'height': 90,
'md5': '',
'content_type': 'image/jpeg'},
{'size': 'b',
'file_path': 'มัสมั่น-b.jpg',
'local_path': str(source.with_name('512x256-16bit-grey-b.jpg')),
'width': 160, 'height': 160,
'md5': '',
'content_type': 'image/jpeg'},
{'size': 't',
'file_path': 'มัสมั่น-t.jpg',
'local_path': str(source.with_name('512x256-16bit-grey-t.jpg')),
'width': 160, 'height': 80,
'md5': '',
'content_type': 'image/jpeg',
'is_public': True},
{'size': 'm',
'file_path': 'มัสมั่น-m.jpg',
'local_path': str(source.with_name('512x256-16bit-grey-m.jpg')),
'width': 320, 'height': 160,
'md5': '',
'content_type': 'image/jpeg'},
],
thumbs)
def test_thumbgen_png_16bit_greyscale_alpha(self):
source = self._tmpcopy('512x256-16bit-grey-alpha.png')
thumbs = self._thumb_test(source)
self.assertEqual(
[
{'size': 's',
'file_path': 'มัสมั่น-s.png',
'local_path': str(source.with_name('512x256-16bit-grey-alpha-s.png')),
'width': 90, 'height': 90,
'md5': '',
'content_type': 'image/png'},
{'size': 'b',
'file_path': 'มัสมั่น-b.png',
'local_path': str(source.with_name('512x256-16bit-grey-alpha-b.png')),
'width': 160, 'height': 160,
'md5': '',
'content_type': 'image/png'},
{'size': 't',
'file_path': 'มัสมั่น-t.png',
'local_path': str(source.with_name('512x256-16bit-grey-alpha-t.png')),
'width': 160, 'height': 80,
'md5': '',
'content_type': 'image/png',
'is_public': True},
{'size': 'm',
'file_path': 'มัสมั่น-m.png',
'local_path': str(source.with_name('512x256-16bit-grey-alpha-m.png')),
'width': 320, 'height': 160,
'md5': '',
'content_type': 'image/png'},
],
thumbs)

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