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265 lines
12 KiB
Python
265 lines
12 KiB
Python
import os
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import hashlib
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import warnings
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from tempfile import mkdtemp, TemporaryFile
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from shutil import rmtree
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from twisted.trial import unittest
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from scrapy.item import Item, Field
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from scrapy.http import Request, Response
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from scrapy.settings import Settings
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from scrapy.pipelines.images import ImagesPipeline
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from scrapy.utils.python import to_bytes
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skip = False
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try:
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from PIL import Image
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except ImportError as e:
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skip = 'Missing Python Imaging Library, install https://pypi.python.org/pypi/Pillow'
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else:
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encoders = set(('jpeg_encoder', 'jpeg_decoder'))
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if not encoders.issubset(set(Image.core.__dict__)):
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skip = 'Missing JPEG encoders'
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def _mocked_download_func(request, info):
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response = request.meta.get('response')
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return response() if callable(response) else response
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class ImagesPipelineTestCase(unittest.TestCase):
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skip = skip
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def setUp(self):
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self.tempdir = mkdtemp()
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self.pipeline = ImagesPipeline(self.tempdir, download_func=_mocked_download_func)
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def tearDown(self):
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rmtree(self.tempdir)
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def test_file_path(self):
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file_path = self.pipeline.file_path
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self.assertEqual(file_path(Request("https://dev.mydeco.com/mydeco.gif")),
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'full/3fd165099d8e71b8a48b2683946e64dbfad8b52d.jpg')
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self.assertEqual(file_path(Request("http://www.maddiebrown.co.uk///catalogue-items//image_54642_12175_95307.jpg")),
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'full/0ffcd85d563bca45e2f90becd0ca737bc58a00b2.jpg')
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self.assertEqual(file_path(Request("https://dev.mydeco.com/two/dirs/with%20spaces%2Bsigns.gif")),
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'full/b250e3a74fff2e4703e310048a5b13eba79379d2.jpg')
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self.assertEqual(file_path(Request("http://www.dfsonline.co.uk/get_prod_image.php?img=status_0907_mdm.jpg")),
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'full/4507be485f38b0da8a0be9eb2e1dfab8a19223f2.jpg')
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self.assertEqual(file_path(Request("http://www.dorma.co.uk/images/product_details/2532/")),
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'full/97ee6f8a46cbbb418ea91502fd24176865cf39b2.jpg')
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self.assertEqual(file_path(Request("http://www.dorma.co.uk/images/product_details/2532")),
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'full/244e0dd7d96a3b7b01f54eded250c9e272577aa1.jpg')
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self.assertEqual(file_path(Request("http://www.dorma.co.uk/images/product_details/2532"),
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response=Response("http://www.dorma.co.uk/images/product_details/2532"),
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info=object()),
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'full/244e0dd7d96a3b7b01f54eded250c9e272577aa1.jpg')
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def test_thumbnail_name(self):
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thumb_path = self.pipeline.thumb_path
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name = '50'
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self.assertEqual(thumb_path(Request("file:///tmp/foo.jpg"), name),
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'thumbs/50/38a86208c36e59d4404db9e37ce04be863ef0335.jpg')
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self.assertEqual(thumb_path(Request("file://foo.png"), name),
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'thumbs/50/e55b765eba0ec7348e50a1df496040449071b96a.jpg')
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self.assertEqual(thumb_path(Request("file:///tmp/foo"), name),
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'thumbs/50/0329ad83ebb8e93ea7c7906d46e9ed55f7349a50.jpg')
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self.assertEqual(thumb_path(Request("file:///tmp/some.name/foo"), name),
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'thumbs/50/850233df65a5b83361798f532f1fc549cd13cbe9.jpg')
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self.assertEqual(thumb_path(Request("file:///tmp/some.name/foo"), name,
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response=Response("file:///tmp/some.name/foo"),
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info=object()),
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'thumbs/50/850233df65a5b83361798f532f1fc549cd13cbe9.jpg')
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def test_convert_image(self):
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SIZE = (100, 100)
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# straigh forward case: RGB and JPEG
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COLOUR = (0, 127, 255)
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im = _create_image('JPEG', 'RGB', SIZE, COLOUR)
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converted, _ = self.pipeline.convert_image(im)
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self.assertEquals(converted.mode, 'RGB')
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self.assertEquals(converted.getcolors(), [(10000, COLOUR)])
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# check that thumbnail keep image ratio
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thumbnail, _ = self.pipeline.convert_image(converted, size=(10, 25))
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self.assertEquals(thumbnail.mode, 'RGB')
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self.assertEquals(thumbnail.size, (10, 10))
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# transparency case: RGBA and PNG
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COLOUR = (0, 127, 255, 50)
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im = _create_image('PNG', 'RGBA', SIZE, COLOUR)
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converted, _ = self.pipeline.convert_image(im)
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self.assertEquals(converted.mode, 'RGB')
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self.assertEquals(converted.getcolors(), [(10000, (205, 230, 255))])
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class DeprecatedImagesPipeline(ImagesPipeline):
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def file_key(self, url):
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return self.image_key(url)
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def image_key(self, url):
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image_guid = hashlib.sha1(to_bytes(url)).hexdigest()
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return 'empty/%s.jpg' % (image_guid)
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def thumb_key(self, url, thumb_id):
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thumb_guid = hashlib.sha1(to_bytes(url)).hexdigest()
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return 'thumbsup/%s/%s.jpg' % (thumb_id, thumb_guid)
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class DeprecatedImagesPipelineTestCase(unittest.TestCase):
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def setUp(self):
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self.tempdir = mkdtemp()
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def init_pipeline(self, pipeline_class):
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self.pipeline = pipeline_class(self.tempdir, download_func=_mocked_download_func)
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self.pipeline.open_spider(None)
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def test_default_file_key_method(self):
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self.init_pipeline(ImagesPipeline)
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with warnings.catch_warnings(record=True) as w:
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warnings.simplefilter('always')
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self.assertEqual(self.pipeline.file_key("https://dev.mydeco.com/mydeco.gif"),
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'full/3fd165099d8e71b8a48b2683946e64dbfad8b52d.jpg')
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self.assertEqual(len(w), 1)
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self.assertTrue('image_key(url) and file_key(url) methods are deprecated' in str(w[-1].message))
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def test_default_image_key_method(self):
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self.init_pipeline(ImagesPipeline)
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with warnings.catch_warnings(record=True) as w:
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warnings.simplefilter('always')
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self.assertEqual(self.pipeline.image_key("https://dev.mydeco.com/mydeco.gif"),
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'full/3fd165099d8e71b8a48b2683946e64dbfad8b52d.jpg')
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self.assertEqual(len(w), 1)
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self.assertTrue('image_key(url) and file_key(url) methods are deprecated' in str(w[-1].message))
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def test_overridden_file_key_method(self):
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self.init_pipeline(DeprecatedImagesPipeline)
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with warnings.catch_warnings(record=True) as w:
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warnings.simplefilter('always')
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self.assertEqual(self.pipeline.file_path(Request("https://dev.mydeco.com/mydeco.gif")),
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'empty/3fd165099d8e71b8a48b2683946e64dbfad8b52d.jpg')
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self.assertEqual(len(w), 1)
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self.assertTrue('image_key(url) and file_key(url) methods are deprecated' in str(w[-1].message))
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def test_default_thumb_key_method(self):
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self.init_pipeline(ImagesPipeline)
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with warnings.catch_warnings(record=True) as w:
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warnings.simplefilter('always')
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self.assertEqual(self.pipeline.thumb_key("file:///tmp/foo.jpg", 50),
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'thumbs/50/38a86208c36e59d4404db9e37ce04be863ef0335.jpg')
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self.assertEqual(len(w), 1)
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self.assertTrue('thumb_key(url) method is deprecated' in str(w[-1].message))
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def test_overridden_thumb_key_method(self):
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self.init_pipeline(DeprecatedImagesPipeline)
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with warnings.catch_warnings(record=True) as w:
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warnings.simplefilter('always')
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self.assertEqual(self.pipeline.thumb_path(Request("file:///tmp/foo.jpg"), 50),
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'thumbsup/50/38a86208c36e59d4404db9e37ce04be863ef0335.jpg')
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self.assertEqual(len(w), 1)
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self.assertTrue('thumb_key(url) method is deprecated' in str(w[-1].message))
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def tearDown(self):
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rmtree(self.tempdir)
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class ImagesPipelineTestCaseFields(unittest.TestCase):
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def test_item_fields_default(self):
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class TestItem(Item):
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name = Field()
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image_urls = Field()
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images = Field()
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for cls in TestItem, dict:
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url = 'http://www.example.com/images/1.jpg'
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item = cls({'name': 'item1', 'image_urls': [url]})
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pipeline = ImagesPipeline.from_settings(Settings({'IMAGES_STORE': 's3://example/images/'}))
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requests = list(pipeline.get_media_requests(item, None))
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self.assertEqual(requests[0].url, url)
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results = [(True, {'url': url})]
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pipeline.item_completed(results, item, None)
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self.assertEqual(item['images'], [results[0][1]])
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def test_item_fields_override_settings(self):
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class TestItem(Item):
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name = Field()
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image = Field()
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stored_image = Field()
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for cls in TestItem, dict:
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url = 'http://www.example.com/images/1.jpg'
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item = cls({'name': 'item1', 'image': [url]})
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pipeline = ImagesPipeline.from_settings(Settings({
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'IMAGES_STORE': 's3://example/images/',
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'IMAGES_URLS_FIELD': 'image',
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'IMAGES_RESULT_FIELD': 'stored_image'
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}))
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requests = list(pipeline.get_media_requests(item, None))
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self.assertEqual(requests[0].url, url)
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results = [(True, {'url': url})]
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pipeline.item_completed(results, item, None)
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self.assertEqual(item['stored_image'], [results[0][1]])
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class ImagesPipelineTestCaseCustomSettings(unittest.TestCase):
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def setUp(self):
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self.tempdir = mkdtemp()
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self.pipeline = ImagesPipeline(self.tempdir)
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self.default_settings = Settings()
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def tearDown(self):
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rmtree(self.tempdir)
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def test_expires(self):
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another_pipeline = ImagesPipeline.from_settings(Settings({'IMAGES_STORE': self.tempdir,
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'IMAGES_EXPIRES': 42}))
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self.assertEqual(self.pipeline.expires, self.default_settings.getint('IMAGES_EXPIRES'))
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self.assertEqual(another_pipeline.expires, 42)
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def test_images_urls_field(self):
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another_pipeline = ImagesPipeline.from_settings(Settings({'IMAGES_STORE': self.tempdir,
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'IMAGES_URLS_FIELD': 'funny_field'}))
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self.assertEqual(self.pipeline.images_urls_field, self.default_settings.get('IMAGES_URLS_FIELD'))
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self.assertEqual(another_pipeline.images_urls_field, 'funny_field')
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def test_images_result_field(self):
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another_pipeline = ImagesPipeline.from_settings(Settings({'IMAGES_STORE': self.tempdir,
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'IMAGES_RESULT_FIELD': 'funny_field'}))
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self.assertEqual(self.pipeline.images_result_field, self.default_settings.get('IMAGES_RESULT_FIELD'))
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self.assertEqual(another_pipeline.images_result_field, 'funny_field')
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def test_min_width(self):
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another_pipeline = ImagesPipeline.from_settings(Settings({'IMAGES_STORE': self.tempdir,
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'IMAGES_MIN_WIDTH': 42}))
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self.assertEqual(self.pipeline.min_width, self.default_settings.getint('IMAGES_MIN_WIDTH'))
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self.assertEqual(another_pipeline.min_width, 42)
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def test_min_height(self):
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another_pipeline = ImagesPipeline.from_settings(Settings({'IMAGES_STORE': self.tempdir,
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'IMAGES_MIN_HEIGHT': 42}))
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self.assertEqual(self.pipeline.min_height, self.default_settings.getint('IMAGES_MIN_HEIGHT'))
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self.assertEqual(another_pipeline.min_height, 42)
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def test_thumbs(self):
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custom_thumbs = {'small': (50, 50), 'big': (270, 270)}
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another_pipeline = ImagesPipeline.from_settings(Settings({'IMAGES_STORE': self.tempdir,
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'IMAGES_THUMBS': custom_thumbs}))
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self.assertEqual(self.pipeline.thumbs, self.default_settings.get('IMAGES_THUMBS'))
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self.assertEqual(another_pipeline.thumbs, custom_thumbs)
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def _create_image(format, *a, **kw):
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buf = TemporaryFile()
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Image.new(*a, **kw).save(buf, format)
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buf.seek(0)
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return Image.open(buf)
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if __name__ == "__main__":
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unittest.main()
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