def test_cache_control(self):
# uppercase
self.assertEqual(
_cache_period_from_headers(
Headers({b"Cache-Control": [b"foo, Max-Age = 100, bar"]})),
100,
)
# missing value
self.assertIsNone(
_cache_period_from_headers(
Headers({b"Cache-Control": [b"max-age=, bar"]})))
# hackernews: bogus due to semicolon
self.assertIsNone(
_cache_period_from_headers(
Headers({b"Cache-Control": [b"private; max-age=0"]})))
# github
self.assertEqual(
_cache_period_from_headers(
Headers({
b"Cache-Control": [b"max-age=0, private, must-revalidate"]
})),
0,
)
# google
self.assertEqual(
_cache_period_from_headers(
Headers({b"cache-control": [b"private, max-age=0"]})),
0,
)
def test_expires(self):
self.assertEqual(
_cache_period_from_headers(
Headers({b"Expires": [b"Wed, 30 Jan 2019 07:35:33 GMT"]}),
time_now=lambda: 1548833700,
),
33,
)
# cache-control overrides expires
self.assertEqual(
_cache_period_from_headers(
Headers(
{
b"cache-control": [b"max-age=10"],
b"Expires": [b"Wed, 30 Jan 2019 07:35:33 GMT"],
}
),
time_now=lambda: 1548833700,
),
10,
)
# invalid expires means immediate expiry
self.assertEqual(_cache_period_from_headers(Headers({b"Expires": [b"0"]})), 0)
