def test_vary_header_different_requests(self):
"""Testing the cache with the Vary header and different requests"""
first_request = Request('http://vary', headers={'User-agent': 'foo'},
method='GET')
second_request = Request('http://vary', headers={'User-agent': 'bar'},
method='GET')
first_resp = self.cache.make_request(first_request)
second_resp = self.cache.make_request(second_request)
self.assertEqual(self.urlopener.get_hit_count('http://vary'), 2)
self.assertFalse(isinstance(first_resp, CachedHTTPResponse))
self.assertFalse(isinstance(second_resp, CachedHTTPResponse))
def test_expires_header_future(self):
"""Testing the cache with the Expires header in the future"""
# We generate the future date in the C locale so that it is properly
# formatted.
locale.setlocale(locale.LC_TIME, str('C'))
future_date = datetime.datetime.utcnow() + datetime.timedelta(days=1)
future_date = future_date.strftime(APICache.EXPIRES_FORMAT) + 'UTC'
locale.resetlocale(locale.LC_TIME)
self.urlopener.endpoints['http://expires_future'] = {
'hit_count': 0,
'headers': {
'Expires': future_date,
},
}
request = Request('http://expires_future', method='GET')
first_resp = self.cache.make_request(request)
second_resp = self.cache.make_request(request)
self.assertEqual(self.urlopener.get_hit_count('http://expires_future'),
1)
self.assertFalse(isinstance(first_resp, CachedHTTPResponse))
self.assertTrue(isinstance(second_resp, CachedHTTPResponse))
def test_cache_control_header_nocache_with_last_modified_updated(self):
"""Testing the cache with the no-cache control and an updated
Last-Modified header
"""
endpoint = 'http://no_cache_lastmodified_updated'
future_date = datetime.datetime.utcnow() + datetime.timedelta(days=1)
self.urlopener.endpoints[endpoint] = {
'hit_count': 0,
'headers': {
'Cache-Control': 'no-cache',
'Last-Modified': '1999-12-31T00:00:00'
},
}
request = Request(endpoint, method='GET')
first_resp = self.cache.make_request(request)
self.urlopener.endpoints[endpoint]['headers']['Last-Modified'] = (
future_date.strftime(CacheEntry.DATE_FORMAT))
second_resp = self.cache.make_request(request)
third_resp = self.cache.make_request(request)
self.assertFalse(isinstance(first_resp, CachedHTTPResponse))
self.assertFalse(isinstance(second_resp, CachedHTTPResponse))
self.assertTrue(isinstance(third_resp, CachedHTTPResponse))
self.assertEqual(self.urlopener.get_hit_count(endpoint), 3)
def test_expires_header_expired(self):
"""Testing the cache with the Expires header in the past"""
request = Request('http://expired', method='GET')
first_resp = self.cache.make_request(request)
second_resp = self.cache.make_request(request)
self.assertEqual(self.urlopener.get_hit_count('http://expired'), 2)
self.assertFalse(isinstance(first_resp, CachedHTTPResponse))
self.assertFalse(isinstance(second_resp, CachedHTTPResponse))
def test_pragma_header(self):
"""Testing the cache with the Pragma: no-cache header"""
request = Request('http://pragma', method='GET')
first_resp = self.cache.make_request(request)
second_resp = self.cache.make_request(request)
self.assertEqual(self.urlopener.get_hit_count('http://pragma'), 2)
self.assertFalse(isinstance(first_resp, CachedHTTPResponse))
self.assertFalse(isinstance(second_resp, CachedHTTPResponse))
def test_cache_control_header_no_store(self):
"""Testing the cache with the no-store control"""
request = Request('http://no_store', method='GET')
first_resp = self.cache.make_request(request)
second_resp = self.cache.make_request(request)
self.assertEqual(self.urlopener.get_hit_count('http://no_store'), 2)
self.assertFalse(isinstance(first_resp, CachedHTTPResponse))
self.assertFalse(isinstance(second_resp, CachedHTTPResponse))
def test_expires_header_overriden_by_max_age(self):
"""Testing the cache with an Expires header that is overridden"""
request = Request('http://expires_override', method='GET')
first_resp = self.cache.make_request(request)
second_resp = self.cache.make_request(request)
self.assertEqual(
self.urlopener.get_hit_count('http://expires_override'), 1)
self.assertFalse(isinstance(first_resp, CachedHTTPResponse))
self.assertTrue(isinstance(second_resp, CachedHTTPResponse))
def test_cache_control_header_nocache_with_etag(self):
"""Testing the cache with the no-cache control and a specified ETag"""
request = Request('http://no_cache_etag', method='GET')
first_resp = self.cache.make_request(request)
second_resp = self.cache.make_request(request)
self.assertEqual(self.urlopener.get_hit_count('http://no_cache_etag'),
2)
self.assertFalse(isinstance(first_resp, CachedHTTPResponse))
self.assertTrue(isinstance(second_resp, CachedHTTPResponse))
def test_cache_control_header_max_age_zero(self):
"""Testing the cache with a zero max-age value"""
request = Request('http://zero_max_age', method='GET')
first_resp = self.cache.make_request(request)
second_resp = self.cache.make_request(request)
self.assertEqual(self.urlopener.get_hit_count('http://zero_max_age'),
2)
self.assertFalse(isinstance(first_resp, CachedHTTPResponse))
self.assertFalse(isinstance(second_resp, CachedHTTPResponse))
def test_cache_control_header_nocache_with_etag_updated(self):
"""Testing the cache with the no-cache control and an updated ETag"""
request = Request('http://no_cache_etag', method='GET')
first_resp = self.cache.make_request(request)
# Pretend the end point has been updated since the last request.
self.urlopener.endpoints['http://no_cache_etag']['headers']['ETag'] = (
'new-etag')
second_resp = self.cache.make_request(request)
third_resp = self.cache.make_request(request)
self.assertFalse(isinstance(first_resp, CachedHTTPResponse))
self.assertFalse(isinstance(second_resp, CachedHTTPResponse))
self.assertTrue(isinstance(third_resp, CachedHTTPResponse))
self.assertEqual(self.urlopener.get_hit_count('http://no_cache_etag'),
3)