feat: add is_multicast to the list of cached properties (#3)

Author: bdraco

src/cached_ipaddress/ipaddress.py

@@ -32,6 +32,11 @@ def is_loopback(self) -> bool:  # type: ignore[override]
         """Return True if this is a loopback address."""
         return super().is_loopback
 
+    @cached_property
+    def is_multicast(self) -> bool:  # type: ignore[override]
+        """Return True if this is a multicast address."""
+        return super().is_multicast
+
 
 class CachedIPv6Address(IPv6Address):
     def __str__(self) -> str:
@@ -58,6 +63,11 @@ def is_loopback(self) -> bool:  # type: ignore[override]
         """Return True if this is a loopback address."""
         return super().is_loopback
 
+    @cached_property
+    def is_multicast(self) -> bool:  # type: ignore[override]
+        """Return True if this is a multicast address."""
+        return super().is_multicast
+
 
 @lru_cache(maxsize=512)
 def _cached_ip_addresses(

tests/test_ipaddress.py

@@ -30,12 +30,14 @@ def test_cached_ip_addresses_wrapper():
     assert ipv4.is_link_local is False
     assert ipv4.is_unspecified is True
     assert ipv4.is_loopback is False
+    assert ipv4.is_multicast is False
 
     ipv6 = ipaddress.cached_ip_addresses("fe80::1")
     assert ipv6 is not None
     assert ipv6.is_link_local is True
     assert ipv6.is_unspecified is False
     assert ipv6.is_loopback is False
+    assert ipv6.is_multicast is False
 
     ipv6 = ipaddress.cached_ip_addresses("0:0:0:0:0:0:0:0")
     assert ipv6 is not None