Add attributes parameter support for sns create_topic API

moto/sns/models.py

@@ -12,7 +12,7 @@ from boto3 import Session
 
 from moto.compat import OrderedDict
 from moto.core import BaseBackend, BaseModel
-from moto.core.utils import iso_8601_datetime_with_milliseconds
+from moto.core.utils import iso_8601_datetime_with_milliseconds, camelcase_to_underscores
 from moto.sqs import sqs_backends
 from moto.awslambda import lambda_backends
 
@@ -243,11 +243,14 @@ class SNSBackend(BaseBackend):
     def update_sms_attributes(self, attrs):
         self.sms_attributes.update(attrs)
 
-    def create_topic(self, name):
+    def create_topic(self, name, attributes=None):
         fails_constraints = not re.match(r'^[a-zA-Z0-9_-]{1,256}$', name)
         if fails_constraints:
             raise InvalidParameterValue("Topic names must be made up of only uppercase and lowercase ASCII letters, numbers, underscores, and hyphens, and must be between 1 and 256 characters long.")
         candidate_topic = Topic(name, self)
+        if attributes:
+            for attribute in attributes:
+                setattr(candidate_topic, camelcase_to_underscores(attribute), attributes[attribute])
         if candidate_topic.arn in self.topics:
             return self.topics[candidate_topic.arn]
         else:

moto/sns/responses.py

@@ -75,7 +75,8 @@ class SNSResponse(BaseResponse):
 
     def create_topic(self):
         name = self._get_param('Name')
-        topic = self.backend.create_topic(name)
+        attributes = self._get_attributes()
+        topic = self.backend.create_topic(name, attributes)
 
         if self.request_json:
             return json.dumps({