def test_cached_dns_lookup_is_persisted_cached_ok(
monkeypatch: MonkeyPatch) -> None:
config_ipcache = _empty()
persisted_cache = {
(HostName("persisted_cached_host"), socket.AF_INET): "1.2.3.4"
}
patch_config_cache(monkeypatch, config_ipcache)
patch_persisted_cache(monkeypatch, persisted_cache)
patch_actual_lookup(
monkeypatch,
{(HostName("persisted_cached_host"), socket.AF_INET): "6.6.6.6"})
assert (ip_lookup.cached_dns_lookup(
HostName("persisted_cached_host"),
family=socket.AF_INET,
force_file_cache_renewal=False,
) == "1.2.3.4")
assert config_ipcache.pop(
(HostName("persisted_cached_host"), socket.AF_INET)) == "1.2.3.4"
assert persisted_cache[(HostName("persisted_cached_host"),
socket.AF_INET)] == "1.2.3.4"
assert (ip_lookup.cached_dns_lookup(
HostName("persisted_cached_host"),
family=socket.AF_INET,
force_file_cache_renewal=True,
) == "6.6.6.6")
assert config_ipcache[(HostName("persisted_cached_host"),
socket.AF_INET)] == "6.6.6.6"
assert persisted_cache[(HostName("persisted_cached_host"),
socket.AF_INET)] == "6.6.6.6"
def test_cached_dns_lookup_raises_once(monkeypatch: MonkeyPatch) -> None:
config_ipcache = _empty()
persisted_cache = _empty()
patch_config_cache(monkeypatch, config_ipcache)
patch_persisted_cache(monkeypatch, persisted_cache)
patch_actual_lookup(monkeypatch, {})
with pytest.raises(ip_lookup.MKIPAddressLookupError):
_ = ip_lookup.cached_dns_lookup(
HostName("test_host"),
family=socket.AF_INET,
force_file_cache_renewal=False,
)
assert (ip_lookup.cached_dns_lookup(
HostName("test_host"),
family=socket.AF_INET,
force_file_cache_renewal=False,
) is None)
assert (ip_lookup.cached_dns_lookup(
HostName("test_host"),
family=socket.AF_INET,
force_file_cache_renewal=True,
) is None)
def test_cached_dns_lookup_uncached(monkeypatch: MonkeyPatch) -> None:
config_ipcache = _empty()
persisted_cache = _empty()
patch_config_cache(monkeypatch, config_ipcache)
patch_persisted_cache(monkeypatch, persisted_cache)
patch_actual_lookup(monkeypatch,
{(HostName("test_host"), socket.AF_INET): "3.1.4.1"})
assert (ip_lookup.cached_dns_lookup(
HostName("test_host"),
family=socket.AF_INET,
force_file_cache_renewal=False,
) == "3.1.4.1")
assert config_ipcache.pop(
(HostName("test_host"), socket.AF_INET)) == "3.1.4.1"
assert persisted_cache.pop(
(HostName("test_host"), socket.AF_INET)) == "3.1.4.1"
assert (ip_lookup.cached_dns_lookup(
HostName("test_host"),
family=socket.AF_INET,
force_file_cache_renewal=True,
) == "3.1.4.1")
assert config_ipcache[(HostName("test_host"), socket.AF_INET)] == "3.1.4.1"
assert persisted_cache[(HostName("test_host"),
socket.AF_INET)] == "3.1.4.1"
def test_cached_dns_lookup_is_config_cached_none(
monkeypatch: MonkeyPatch) -> None:
patch_config_cache(
monkeypatch,
{(HostName("the_host_that_raised"), socket.AF_INET6): None})
patch_persisted_cache(monkeypatch, _empty())
patch_actual_lookup(monkeypatch, _empty())
assert (ip_lookup.cached_dns_lookup(
HostName("the_host_that_raised"),
family=socket.AF_INET6,
force_file_cache_renewal=False,
) is None)
assert (ip_lookup.cached_dns_lookup(
HostName("the_host_that_raised"),
family=socket.AF_INET6,
force_file_cache_renewal=True,
) is None)
def test_cached_dns_lookup_is_config_cached_ok(
monkeypatch: MonkeyPatch) -> None:
patch_config_cache(
monkeypatch,
{(HostName("config_cached_host"), socket.AF_INET): "1.2.3.4"})
patch_persisted_cache(
monkeypatch,
{(HostName("config_cached_host"), socket.AF_INET): "6.6.6.6"})
patch_actual_lookup(
monkeypatch,
{(HostName("config_cached_host"), socket.AF_INET): "7.7.7.7"})
assert (ip_lookup.cached_dns_lookup(
HostName("config_cached_host"),
family=socket.AF_INET,
force_file_cache_renewal=False,
) == "1.2.3.4")
assert (ip_lookup.cached_dns_lookup(
HostName("config_cached_host"),
family=socket.AF_INET,
force_file_cache_renewal=True,
) == "1.2.3.4")
def test_filecache_beats_failing_lookup(monkeypatch: MonkeyPatch) -> None:
config_ipcache = _empty()
persisted_cache = {(HostName("test_host"), socket.AF_INET): "3.1.4.1"}
patch_config_cache(monkeypatch, config_ipcache)
patch_persisted_cache(monkeypatch, persisted_cache)
patch_actual_lookup(monkeypatch, {})
assert (ip_lookup.cached_dns_lookup(
HostName("test_host"),
family=socket.AF_INET,
force_file_cache_renewal=True,
) == "3.1.4.1")
assert persisted_cache[(HostName("test_host"), socket.AF_INET)]