Add support for VPCSubnet.databases field (#607)

* Add support for VPCSubnet.databases field

* ipv6_range -> ipv6_ranges

* ipv6_range -> ipv6_ranges (list)

Author: lgarber-akamai

linode_api4/objects/vpc.py

@@ -20,6 +20,13 @@ class VPCSubnetLinode(JSONObject):
     interfaces: Optional[List[VPCSubnetLinodeInterface]] = None
 
 
+@dataclass
+class VPCSubnetDatabase(JSONObject):
+    id: int = 0
+    ipv4_range: Optional[str] = None
+    ipv6_ranges: Optional[List[str]] = None
+
+
 class VPCSubnet(DerivedBase):
     """
     An instance of a VPC subnet.
@@ -36,6 +43,7 @@ class VPCSubnet(DerivedBase):
         "label": Property(mutable=True),
         "ipv4": Property(),
         "linodes": Property(json_object=VPCSubnetLinode, unordered=True),
+        "databases": Property(json_object=VPCSubnetDatabase, unordered=True),
         "created": Property(is_datetime=True),
         "updated": Property(is_datetime=True),
     }

test/fixtures/vpcs_123456_subnets.json

@@ -19,6 +19,15 @@
           ]
         }
       ],
+      "databases": [
+        {
+          "id": 12345,
+          "ipv4_range": "10.0.0.0/24",
+          "ipv6_ranges": [
+            "2001:db8::/64"
+          ]
+        }
+      ],
       "created": "2018-01-01T00:01:01",
       "updated": "2018-01-01T00:01:01"
     }

test/fixtures/vpcs_123456_subnets_789.json

@@ -17,6 +17,15 @@
       ]
     }
   ],
+  "databases": [
+    {
+      "id": 12345,
+      "ipv4_range": "10.0.0.0/24",
+      "ipv6_ranges": [
+        "2001:db8::/64"
+      ]
+    }
+  ],
   "created": "2018-01-01T00:01:01",
   "updated": "2018-01-01T00:01:01"
 }

test/unit/objects/vpc_test.py

@@ -120,7 +120,13 @@ def validate_vpc_subnet_789(self, subnet: VPCSubnet):
 
         self.assertEqual(subnet.label, "test-subnet")
         self.assertEqual(subnet.ipv4, "10.0.0.0/24")
+
         self.assertEqual(subnet.linodes[0].id, 12345)
+
+        self.assertEqual(subnet.databases[0].id, 12345)
+        self.assertEqual(subnet.databases[0].ipv4_range, "10.0.0.0/24")
+        self.assertEqual(subnet.databases[0].ipv6_ranges, ["2001:db8::/64"])
+
         self.assertEqual(subnet.created, expected_dt)
         self.assertEqual(subnet.updated, expected_dt)