Add two more tests for IPAddressField, checking the IPv4 and IPv6 protocols separately

tests/test_fields.py

@@ -539,6 +539,38 @@ class TestIPAddressField(FieldValues):
     field = serializers.IPAddressField()
 
 
+class TestIPv4AddressField(FieldValues):
+    """
+    Valid and invalid values for `IPAddressField`
+    """
+    valid_inputs = {
+        '127.0.0.1': '127.0.0.1',
+        '192.168.33.255': '192.168.33.255',
+    }
+    invalid_inputs = {
+        '127001': ['Enter a valid IPv4 address.'],
+        '127.122.111.2231': ['Enter a valid IPv4 address.'],
+    }
+    outputs = {}
+    field = serializers.IPAddressField(protocol='IPv4')
+
+
+class TestIPv6AddressField(FieldValues):
+    """
+    Valid and invalid values for `IPAddressField`
+    """
+    valid_inputs = {
+        '2001:0db8:85a3:0042:1000:8a2e:0370:7334': '2001:db8:85a3:42:1000:8a2e:370:7334',
+        '2001:cdba:0:0:0:0:3257:9652': '2001:cdba::3257:9652',
+        '2001:cdba::3257:9652': '2001:cdba::3257:9652'
+    }
+    invalid_inputs = {
+        '2001:::9652': ['Enter a valid IPv4 or IPv6 address.'],
+        '2001:0db8:85a3:0042:1000:8a2e:0370:73341': ['Enter a valid IPv4 or IPv6 address.'],
+    }
+    outputs = {}
+    field = serializers.IPAddressField(protocol='IPv6')
+
 # Number types...
 
 class TestIntegerField(FieldValues):