forked from pelican-plugins/image-process
/
test_image_process.py
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test_image_process.py
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# -*- coding: utf-8 -*-
from __future__ import unicode_literals
import os
from PIL import Image, ImageChops
from pelican.tests.support import unittest, get_settings, temporary_folder
from image_process import harvest_images_in_fragment, process_image
try:
import unittest.mock as mock # python < 3.3
except ImportError:
import mock
CUR_DIR = os.path.dirname(__file__)
TEST_IMAGES = [os.path.join(CUR_DIR, 'test_data/pelican-bird.jpg'),
os.path.join(CUR_DIR, 'test_data/pelican-bird.png')]
class ImageDerivativeTest(unittest.TestCase):
transforms = {
'crop': ['crop 10 20 100 200'],
'flip_horizontal': ['flip_horizontal'],
'flip_vertical': ['flip_vertical'],
'grayscale': ['grayscale'],
'resize': ['resize 200 250'],
'rotate': ['rotate 20'],
'scale_in': ['scale_in 200 250 False'],
'scale_out': ['scale_out 200 250 False'],
'blur': ['blur'],
'contour': ['contour'],
'detail': ['detail'],
'edge_enhance': ['edge_enhance'],
'edge_enhance_more': ['edge_enhance_more'],
'emboss': ['emboss'],
'find_edges': ['find_edges'],
'smooth': ['smooth'],
'smooth_more': ['smooth_more'],
'sharpen': ['sharpen'],
}
@mock.patch('image_process.process_image')
def test_extraction(self, process_image):
settings = get_settings(
IMAGE_PROCESS_DIR='derivatives', IMAGE_PROCESS=self.transforms
)
html = ('<img class="test image-process image-process-crop test2"'
' src="/tmp/test.jpg" />')
html = harvest_images_in_fragment(html, settings)
expected_content = ('<img class="test image-process image-process-crop'
' test2" src="/tmp/derivatives/crop/test.jpg"/>')
expected_source = os.path.join(settings['PATH'], 'tmp/test.jpg')
expected_destination = os.path.join(
settings['OUTPUT_PATH'], 'tmp', settings['IMAGE_PROCESS_DIR'],
'crop', 'test.jpg'
)
expected_image = (expected_source, expected_destination,
['crop 10 20 100 200'])
expected_calls = [mock.call(expected_image, settings)]
self.assertEqual(html, expected_content)
self.assertEqual(expected_calls, process_image.call_args_list)
def test_transforms(self):
settings = get_settings(IMAGE_PROCESS=self.transforms)
def test_transform(d, i, tmpdir):
path, name = os.path.split(i)
destination = os.path.join(tmpdir, d, name)
image = (i, destination, settings['IMAGE_PROCESS'][d])
process_image(image, settings)
transformed = Image.open(destination)
expected_path = os.path.join(path, 'results', d, name)
expected = Image.open(expected_path)
img_diff = ImageChops.difference(transformed, expected).getbbox()
self.assertEqual(img_diff, None)
with temporary_folder() as tmpdir:
[test_transform(d, i, tmpdir)
for d in self.transforms for i in TEST_IMAGES]
class HTMLGenerationTest(unittest.TestCase):
"""
Check that all syntaxes generate proper HTML.
"""
valid_transforms = {
'thumb': ["crop 0 0 50% 50%", "scale_out 150 150", "crop 0 0 150 150"],
'article-image': {
'type': 'image', 'ops': ["scale_in 300 300"],
},
'crisp': {
'type': 'responsive-image',
'srcset': [('1x', ["scale_in 800 600 True"]),
('2x', ["scale_in 1600 1200 True"]),
('4x', ["scale_in 3200 2400 True"])],
'default': '1x',
},
'crisp2': {
'type': 'responsive-image',
'srcset': [('1x', ["scale_in 800 600 True"]),
('2x', ["scale_in 1600 1200 True"]),
('4x', ["scale_in 3200 2400 True"])],
'default': ["scale_in 400 300 True"],
},
'large-photo': {
'type': 'responsive-image',
'sizes': (
'(min-width: 1200px) 800px, (min-width: 992px) 650px, '
'(min-width: 768px) 718px, 100vw'
),
'srcset': [('600w', ["scale_in 600 450 True"]),
('800w', ["scale_in 800 600 True"]),
('1600w', ["scale_in 1600 1200 True"])],
'default': '800w',
},
'pict': {
'type': 'picture',
'sources': [
{
'name': 'default',
'media': '(min-width: 640px)',
'srcset': [('640w', ["scale_in 640 480 True"]),
('1024w', ["scale_in 1024 683 True"]),
('1600w', ["scale_in 1600 1200 True"])],
'sizes': '100vw',
}, {
'name': 'source-1',
'srcset': [('1x', ["crop 100 100 200 200"]),
('2x', ["crop 100 100 300 300"])]
}
],
'default': ('default', '640w'),
},
'pict2': {
'type': 'picture',
'sources': [
{
'name': 'default',
'media': '(min-width: 640px)',
'srcset': [('640w', ["scale_in 640 480 True"]),
('1024w', ["scale_in 1024 683 True"]),
('1600w', ["scale_in 1600 1200 True"])],
'sizes': '100vw'
}, {
'name': 'source-2',
'srcset': [('1x', ["crop 100 100 200 200"]),
('2x', ["crop 100 100 300 300"])]
}
],
'default': ('source-2', ["scale_in 800 600 True"]),
},
}
def test_undefined(self):
settings = get_settings(IMAGE_PROCESS=self.valid_transforms)
html = '<img class="image-process-undefined" src="/tmp/test.jpg" />'
with self.assertRaises(RuntimeError):
harvest_images_in_fragment(html, settings)
@mock.patch('image_process.process_image')
def test_image_generation(self, process_image):
settings = get_settings(IMAGE_PROCESS=self.valid_transforms,
IMAGE_PROCESS_DIR='derivs')
test_data = [
('<img class="image-process-thumb" src="/tmp/test.jpg" />',
'<img class="image-process-thumb" '
'src="/tmp/derivs/thumb/test.jpg"/>',
(
'tmp/test.jpg', 'thumb/test.jpg',
["crop 0 0 50% 50%", "scale_out 150 150", "crop 0 0 150 150"]
)),
('<img class="image-process-article-image" src="/tmp/test.jpg" />',
'<img class="image-process-article-image" '
'src="/tmp/derivs/article-image/test.jpg"/>',
('tmp/test.jpg', 'article-image/test.jpg', ["scale_in 300 300"]))
]
for data in test_data:
expected_source = os.path.join(settings['PATH'], data[2][0])
expected_destination = os.path.join(
settings['OUTPUT_PATH'], 'tmp', settings['IMAGE_PROCESS_DIR'],
data[2][1]
)
html = harvest_images_in_fragment(data[0], settings)
expected_image = (expected_source, expected_destination,
data[2][2])
expected_calls = [mock.call(expected_image, settings)]
self.assertEqual(html, data[1])
self.assertEqual(expected_calls, process_image.call_args_list)
process_image.reset_mock()
@mock.patch('image_process.process_image')
def test_responsive_image_generation(self, process_image):
settings = get_settings(IMAGE_PROCESS=self.valid_transforms,
IMAGE_PROCESS_DIR='derivs')
test_data = [
('<img class="image-process-crisp" src="/tmp/test.jpg" />',
'<img class="image-process-crisp" '
'src="/tmp/derivs/crisp/1x/test.jpg" '
'srcset="/tmp/derivs/crisp/1x/test.jpg 1x, '
'/tmp/derivs/crisp/2x/test.jpg 2x, '
'/tmp/derivs/crisp/4x/test.jpg 4x"/>',
[('tmp/test.jpg', 'crisp/1x/test.jpg',
["scale_in 800 600 True"]),
('tmp/test.jpg', 'crisp/2x/test.jpg',
["scale_in 1600 1200 True"]),
('tmp/test.jpg', 'crisp/4x/test.jpg',
["scale_in 3200 2400 True"]),
]),
('<img class="image-process-crisp2" src="/tmp/test.jpg" />',
'<img class="image-process-crisp2" '
'src="/tmp/derivs/crisp2/default/test.jpg" '
'srcset="/tmp/derivs/crisp2/1x/test.jpg 1x, '
'/tmp/derivs/crisp2/2x/test.jpg 2x, '
'/tmp/derivs/crisp2/4x/test.jpg 4x"/>',
# default must be first, because the process execute it first
[('tmp/test.jpg', 'crisp2/default/test.jpg',
["scale_in 400 300 True"]),
('tmp/test.jpg', 'crisp2/1x/test.jpg',
["scale_in 800 600 True"]),
('tmp/test.jpg', 'crisp2/2x/test.jpg',
["scale_in 1600 1200 True"]),
('tmp/test.jpg', 'crisp2/4x/test.jpg',
["scale_in 3200 2400 True"])]),
('<img class="image-process-large-photo" src="/tmp/test.jpg" />',
'<img class="image-process-large-photo" '
'sizes="(min-width: 1200px) 800px, (min-width: 992px) 650px, '
'(min-width: 768px) 718px, 100vw" src="/tmp/derivs/large-photo/'
'800w/test.jpg" srcset="/tmp/derivs/large-photo/600w/test.jpg '
'600w, /tmp/derivs/large-photo/800w/test.jpg 800w, '
'/tmp/derivs/large-photo/1600w/test.jpg 1600w"/>',
[('tmp/test.jpg', 'large-photo/600w/test.jpg',
["scale_in 600 450 True"]),
('tmp/test.jpg', 'large-photo/800w/test.jpg',
["scale_in 800 600 True"]),
('tmp/test.jpg', 'large-photo/1600w/test.jpg',
["scale_in 1600 1200 True"]),
]),
]
for data in test_data:
html = harvest_images_in_fragment(data[0], settings)
expected_images = []
expected_calls = []
for t in data[2]:
expected_source = os.path.join(settings['PATH'], t[0])
expected_destination = os.path.join(
settings['OUTPUT_PATH'], 'tmp',
settings['IMAGE_PROCESS_DIR'], t[1]
)
expected_image = (expected_source, expected_destination, t[2])
expected_images.append(expected_image)
expected_calls.append(mock.call(expected_image, settings))
self.maxDiff = None
self.assertEqual(html, data[1])
self.assertEqual(process_image.call_args_list, expected_calls)
process_image.reset_mock()
@mock.patch('image_process.process_image')
def test_picture_generation(self, process_image):
settings = get_settings(IMAGE_PROCESS=self.valid_transforms,
IMAGE_PROCESS_DIR='derivs')
test_data = [
('<picture><source class="source-1" '
'src="/images/pelican-closeup.jpg"></source><img '
'class="image-process-pict" src="/images/pelican.jpg"/>'
'</picture>',
'<picture><source media="(min-width: 640px)" sizes="100vw" '
'srcset="/images/derivs/pict/default/640w/pelican.jpg 640w, '
'/images/derivs/pict/default/1024w/pelican.jpg 1024w, '
'/images/derivs/pict/default/1600w/pelican.jpg 1600w">'
'</source><source srcset="/images/derivs/pict/source-1/1x/'
'pelican-closeup.jpg 1x, /images/derivs/pict/source-1/2x/'
'pelican-closeup.jpg 2x"></source><img class="image-process-pict"'
' src="/images/derivs/pict/default/640w/pelican.jpg"/></picture>',
[('images/pelican.jpg', 'pict/default/640w/pelican.jpg',
["scale_in 640 480 True"]),
('images/pelican.jpg', 'pict/default/1024w/pelican.jpg',
["scale_in 1024 683 True"]),
('images/pelican.jpg', 'pict/default/1600w/pelican.jpg',
["scale_in 1600 1200 True"]),
('images/pelican-closeup.jpg',
'pict/source-1/1x/pelican-closeup.jpg',
["crop 100 100 200 200"]),
('images/pelican-closeup.jpg',
'pict/source-1/2x/pelican-closeup.jpg',
["crop 100 100 300 300"])
]),
('<div class="figure"><img alt="Pelican" class="image-process'
'-pict2" src="/images/pelican.jpg" /> <p class="caption">'
'A nice pelican</p> <div class="legend"> <img alt="Other view of '
'pelican" class="image-process source-2" src="/images/'
'pelican-closeup.jpg" /></div></div>',
'<div class="figure"><picture><source media="(min-width: 640px)" '
'sizes="100vw" srcset="/images/derivs/pict2/default/640w/pelican'
'.jpg 640w, /images/derivs/pict2/default/1024w/pelican.jpg 1024w,'
' /images/derivs/pict2/default/1600w/pelican.jpg 1600w"></source>'
'<source srcset="/images/derivs/pict2/source-2/1x/pelican-closeup'
'.jpg 1x, /images/derivs/pict2/source-2/2x/pelican-closeup.jpg '
'2x"></source><img alt="Pelican" class="image-process-pict2" '
'src="/images/derivs/pict2/source-2/default/pelican-closeup.jpg"'
'/></picture> <p class="caption">A nice pelican</p> <div '
'class="legend"> </div></div>',
[
# default call first
('images/pelican-closeup.jpg',
'pict2/source-2/default/pelican-closeup.jpg',
["scale_in 800 600 True"]),
('images/pelican.jpg', 'pict2/default/640w/pelican.jpg',
["scale_in 640 480 True"]),
# then images in order of processing
('images/pelican.jpg', 'pict2/default/1024w/pelican.jpg',
["scale_in 1024 683 True"]),
('images/pelican.jpg', 'pict2/default/1600w/pelican.jpg',
["scale_in 1600 1200 True"]),
('images/pelican-closeup.jpg',
'pict2/source-2/1x/pelican-closeup.jpg',
["crop 100 100 200 200"]),
('images/pelican-closeup.jpg',
'pict2/source-2/2x/pelican-closeup.jpg',
["crop 100 100 300 300"])
])
]
for data in test_data:
html = harvest_images_in_fragment(data[0], settings)
expected_images = []
expected_calls = []
for t in data[2]:
expected_source = os.path.join(settings['PATH'], t[0])
expected_destination = os.path.join(
settings['OUTPUT_PATH'], 'images',
settings['IMAGE_PROCESS_DIR'], t[1]
)
expected_image = (expected_source, expected_destination, t[2])
expected_images.append(expected_image)
expected_calls.append(mock.call(expected_image, settings))
self.maxDiff = None
self.assertEqual(html, data[1])
self.assertEqual(process_image.call_args_list, expected_calls)
process_image.reset_mock()
if __name__ == '__main__':
unittest.main()