def test_fetch_from_empty_cache(self):
"""Test if there are not any entries returned when the cache is empty"""
cache = Cache(self.tmp_path)
rss = RSS(RSS_FEED_URL, cache=cache)
cached_entries = [entry for entry in rss.fetch_from_cache()]
self.assertEqual(len(cached_entries), 0)
def test_fetch_from_non_set_cache(self):
"""Test if a error is raised when the cache was not set"""
rss = RSS(RSS_FEED_URL)
with self.assertRaises(CacheError):
_ = [entry for entry in rss.fetch_from_cache()]
def test_fetch_from_cache(self):
"""Test whether the cache works"""
http_requests = configure_http_server()
# First, we fetch the entries from the server, storing them
# in a cache
cache = Cache(self.tmp_path)
rss = RSS(RSS_FEED_URL, cache=cache)
entries = [entry for entry in rss.fetch()]
self.assertEqual(len(http_requests), 1)
# Now, we get the entries from the cache.
# The contents should be the same and there won't be
# any new request to the server
cached_entries = [entry for entry in rss.fetch_from_cache()]
self.assertEqual(len(cached_entries), len(entries))
self.assertEqual(len(http_requests), 1) # no more requests done
