Route53: allow hosted zone id as well when creating record sets (#833)

* add test that creates r53 record set from hosted zone id (not name)

* pass test to enable creating record sets by hosted zone ids

moto/route53/models.py

@@ -213,8 +213,11 @@ class RecordSetGroup(object):
     def create_from_cloudformation_json(cls, resource_name, cloudformation_json, region_name):
         properties = cloudformation_json['Properties']
 
-        zone_name = properties["HostedZoneName"]
-        hosted_zone = route53_backend.get_hosted_zone_by_name(zone_name)
+        zone_name = properties.get("HostedZoneName")
+        if zone_name:
+            hosted_zone = route53_backend.get_hosted_zone_by_name(zone_name)
+        else:
+            hosted_zone = route53_backend.get_hosted_zone(properties["HostedZoneId"])
         record_sets = properties["RecordSets"]
         for record_set in record_sets:
             hosted_zone.add_rrset(record_set)

tests/test_cloudformation/test_cloudformation_stack_crud.py

@@ -12,7 +12,7 @@ import sure  # noqa
 import tests.backport_assert_raises  # noqa
 from nose.tools import assert_raises
 
-from moto import mock_cloudformation, mock_s3
+from moto import mock_cloudformation, mock_s3, mock_route53
 from moto.cloudformation import cloudformation_backends
 
 dummy_template = {
@@ -69,6 +69,57 @@ def test_create_stack():
     })
 
 
+@mock_cloudformation
+@mock_route53
+def test_create_stack_hosted_zone_by_id():
+    conn = boto.connect_cloudformation()
+    dummy_template = {
+        "AWSTemplateFormatVersion": "2010-09-09",
+        "Description": "Stack 1",
+        "Parameters": {
+        },
+        "Resources": {
+            "Bar": {
+                "Type" : "AWS::Route53::HostedZone",
+                "Properties" : {
+                    "Name" : "foo.bar.baz",
+                }
+            },
+        },
+    }
+    dummy_template2 = {
+        "AWSTemplateFormatVersion": "2010-09-09",
+        "Description": "Stack 2",
+        "Parameters": {
+            "ZoneId": { "Type": "String" }
+        },
+        "Resources": {
+            "Foo": {
+                "Properties": {
+                    "HostedZoneId": {"Ref": "ZoneId"},
+                    "RecordSets": []
+                },
+                "Type": "AWS::Route53::RecordSetGroup"
+            }
+        },
+    }
+    conn.create_stack(
+        "test_stack",
+        template_body=json.dumps(dummy_template),
+        parameters={}.items()
+    )
+    r53_conn = boto.connect_route53()
+    zone_id = r53_conn.get_zones()[0].id
+    conn.create_stack(
+        "test_stack",
+        template_body=json.dumps(dummy_template2),
+        parameters={"ZoneId": zone_id}.items()
+    )
+
+    stack = conn.describe_stacks()[0]
+    assert stack.list_resources()
+
+
 @mock_cloudformation
 def test_creating_stacks_across_regions():
     west1_conn = boto.cloudformation.connect_to_region("us-west-1")