def get_pseudo_package_list():
"""
Existing pseudo packages for Debian are obtained from
`BTS <http://bugs.debian.org/pseudo-packages.maintainers>`_
"""
PSEUDO_PACKAGE_LIST_URL = (
'http://bugs.debian.org/pseudo-packages.maintainers'
)
cache = HttpCache(settings.PTS_CACHE_DIRECTORY)
if not cache.is_expired(PSEUDO_PACKAGE_LIST_URL):
return
response, updated = cache.update(PSEUDO_PACKAGE_LIST_URL)
try:
response.raise_for_status()
except requests.exceptions.HTTPError as e:
raise PluginProcessingError()
if not updated:
return
return [
line.split(None, 1)[0]
for line in response.text.splitlines()
]
def test_cache_expires_header_expired(self, mock_requests):
"""
Tests that the cache knows that a cached response is expired based
on its Expires header.
"""
expires = http_date(time.time() - 3600)
self.set_mock_response(mock_requests, headers={
'Expires': expires
})
cache = HttpCache(self.cache_directory)
url = 'http://example.com'
cache.update(url)
self.assertTrue(cache.is_expired(url))
def test_cache_expired(self, mock_requests):
"""
Tests that the cache knows when an entry with a stale Cache-Control
header is expired.
"""
self.set_mock_response(mock_requests, headers={
'Cache-Control': 'must-revalidate, max-age=0',
})
cache = HttpCache(self.cache_directory)
url = 'http://example.com'
cache.update(url)
self.assertTrue(url in cache)
self.assertTrue(cache.is_expired(url))
def test_cache_not_expired(self, mock_requests):
"""
Tests that the cache knows a response is not expired based on its
Cache-Control header.
"""
self.set_mock_response(mock_requests, headers={
'Cache-Control': 'must-revalidate, max-age=3600',
})
cache = HttpCache(self.cache_directory)
url = 'http://example.com'
cache.update(url)
self.assertTrue(url in cache)
self.assertFalse(cache.is_expired(url))
