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test_reddit.py
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/
test_reddit.py
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import unittest
from os.path import dirname, join as path_join
from typing import Any, List
import pytest
from nichtparasoup.imagecrawler import Image, ImageCollection
from nichtparasoup.imagecrawlers.reddit import Reddit
from nichtparasoup.testing.imagecrawler import FileFetcher, ImageCrawlerLoaderTest
_reddit_right_config = dict(subreddit='aww')
class RedditConfigCorrect(unittest.TestCase):
def test__check_config_right_value(self) -> None:
# arrange
config_in = _reddit_right_config.copy()
# act
config_out = Reddit.check_config(config_in)
# assert
self.assertDictEqual(config_in, config_out)
class RedditConfigSubredditTest(unittest.TestCase):
def setUp(self) -> None:
self._reddit_right_config_wo_subreddit = _reddit_right_config.copy()
del self._reddit_right_config_wo_subreddit["subreddit"]
def tearDown(self) -> None:
del self._reddit_right_config_wo_subreddit
def test_check_config_missing_value(self) -> None:
# assert
with self.assertRaises(KeyError):
Reddit.check_config(self._reddit_right_config_wo_subreddit)
def test_check_config_wrong_type(self) -> None:
wrong_types: List[Any] = [None, True, 1, 0.1, [], (), {}, self]
for wrong_type in wrong_types:
# arrange
config_in = self._reddit_right_config_wo_subreddit
config_in["subreddit"] = wrong_type
# assert
with self.assertRaises(TypeError, msg=repr(config_in)):
Reddit.check_config(config_in)
def test_check_config_wrong_value(self) -> None:
wrong_values = [""]
for wrong_value in wrong_values:
# arrange
config_in = self._reddit_right_config_wo_subreddit
config_in["subreddit"] = wrong_value
# assert
with self.assertRaises(ValueError, msg=repr(config_in)):
Reddit.check_config(config_in)
@unittest.skip("TODO: do we need this tested or even coded?")
def test_check_config_not_existing(self) -> None:
raise NotImplementedError
class RedditBuildUriTest(unittest.TestCase):
def test__build_uri_at_front(self) -> None:
# arrange
crawler = Reddit(subreddit='foo')
# act
uri = crawler._get_uri(None)
# assert
self.assertEqual(uri, 'https://www.reddit.com/r/foo.json?after=')
def test__build_uri_at_front__escape(self) -> None:
# arrange
crawler = Reddit(subreddit='foo/bar bazz')
# act
uri = crawler._get_uri(None)
# assert
self.assertEqual(uri, 'https://www.reddit.com/r/foo%2Fbar+bazz.json?after=')
def test__build_uri_at_after(self) -> None:
# arrange
crawler = Reddit(subreddit='test')
# act
uri = crawler._get_uri('foobar')
# assert
self.assertEqual(uri, 'https://www.reddit.com/r/test.json?after=foobar')
def test__build_uri_at_after__escape(self) -> None:
# arrange
crawler = Reddit(subreddit='test')
# act
uri = crawler._get_uri('foo/bar bazz')
# assert
self.assertEqual(uri, 'https://www.reddit.com/r/test.json?after=foo%2Fbar+bazz')
class RedditResetTest(unittest.TestCase):
def test_reset_done(self) -> None:
# arrange
crawler = Reddit(subreddit='test')
crawler._after = 'foo'
# act
crawler._reset()
# assert
self.assertIsNone(crawler._after)
class TestRedditExhausted:
@pytest.mark.parametrize(
('at_end', 'expected'),
[
(True, True),
(False, False),
],
ids=[
'at_end',
'not at_end'
],
)
def test_exhausted(self, at_end: bool, expected: bool) -> None:
# arrange
crawler = Reddit(subreddit='test')
crawler._at_end = at_end
# act & assert
assert crawler.is_exhausted() is expected
def test_reset_done(self) -> None:
# arrange
crawler = Reddit(subreddit='test')
crawler._at_end = True
assert crawler.is_exhausted()
# act
crawler._reset()
# assert
assert not crawler.is_exhausted()
_FILE_FETCHER = FileFetcher({ # relative to "./testdata_reddit"
'/r/aww.json?after=': 'aww.json',
'/r/awwwwwwww.json?after=': 'awwwwwwww.json',
}, base_url='https://www.reddit.com', base_dir=path_join(dirname(__file__), 'testdata_reddit'))
class RedditCrawlTest(unittest.TestCase):
def test_crawl(self) -> None:
# arrange
crawler = Reddit(subreddit='aww')
self.assertFalse(crawler.is_exhausted())
crawler._remote_fetcher = _FILE_FETCHER
expected_after = 't3_dqx42l'
expected_images = ImageCollection()
expected_images.add(Image(
uri='https://i.redd.it/kl3dp9sy5fw31.jpg',
source='https://www.reddit.com/r/aww/comments/dqx0z4/a_very_photogenic_noodle/'))
expected_images.add(Image(
uri='https://i.redd.it/4ltnvj5irdw31.jpg',
source='https://www.reddit.com/r/aww/comments/dqud6w/3/'))
expected_images.add(Image(
uri='https://i.redd.it/nkfjoej8yew31.png',
source='https://www.reddit.com/r/aww/comments/dqwp8l/left_the_house_for_10_minutes_and_came_back_to/'))
expected_images.add(Image(
uri='https://i.redd.it/gcxqswv8igw31.png',
source='https://www.reddit.com/r/aww/comments/dqz6iz/blind_cutie/'))
expected_images.add(Image(
uri='https://i.redd.it/hywobahj9ew31.png',
source='https://www.reddit.com/r/aww/comments/dqvgm9/i_asked_this_guy_if_he_knocked_over_the_treats/'))
expected_images.add(Image(
uri='https://i.redd.it/j4qda3c9scw31.jpg',
source='https://www.reddit.com/r/aww/comments/dqrxiq/admiral_anchovies_is_two_weeks_old_and_has/'))
expected_images.add(Image(
uri='https://i.imgur.com/O2bVClA.jpg',
source='https://www.reddit.com/r/aww/comments/dqsk7y/meet_our_new_3_month_old_baby_bucko_the_beagle/',
))
expected_images.add(Image(
uri='https://imgur.com/82LxoWj.jpg',
source='https://www.reddit.com/r/aww/comments/dqtdo7/im_one_of_a_kind/',
))
# act
images = crawler._crawl()
# assert
self.assertFalse(crawler.is_exhausted())
self.assertEqual(crawler._after, expected_after)
self.assertSetEqual(images, expected_images)
for expected_image in expected_images:
for image in images:
if image == expected_image:
# sources are irrelevant for equality, need to be checked manually
self.assertEqual(image.source, expected_image.source)
def test_crawl_last_page(self) -> None:
# arrange
crawler = Reddit(subreddit='awwwwwwww')
crawler._remote_fetcher = _FILE_FETCHER
self.assertFalse(crawler.is_exhausted())
# act
crawler._crawl()
# assert
self.assertTrue(crawler.is_exhausted())
class RedditDescriptionTest(unittest.TestCase):
def test_description_config(self) -> None:
# act
description = Reddit.info()
# assert
assert isinstance(description.config, dict)
for config_key in _reddit_right_config.keys():
self.assertIn(config_key, description.config)
@pytest.mark.no_cover
def test_loader() -> None:
assert ImageCrawlerLoaderTest().check('Reddit', Reddit)