Aws r53 tests

aws/client.py

@@ -11,7 +11,7 @@
 import botocore.session
 
 
-SERVICES_WITHOUT_REGIONS = ["iam", "s3"]
+SERVICES_WITHOUT_REGIONS = ["iam", "s3", "route53"]
 
 
 @functools.lru_cache()
@@ -41,7 +41,10 @@ def get_client(profile, region, service):
     """
     session = get_session(profile)
 
-    if region not in session.get_available_regions(service):
+    if (
+        region not in session.get_available_regions(service)
+        and service not in SERVICES_WITHOUT_REGIONS
+    ):
         warnings.warn("service {} not available in {}".format(service, region))
 
     return session.create_client(service, region_name=region)

aws/route53/resources.py

@@ -0,0 +1,31 @@
+from conftest import botocore_client
+
+
+def zones():
+    """
+    https://botocore.amazonaws.com/v1/documentation/api/latest/reference/services/route53.html#Route53.Client.list_hosted_zones
+    """
+    return (
+        botocore_client.get("route53", "list_hosted_zones", [], {})
+        .extract_key("HostedZones")
+        .flatten()
+        .values()
+    )
+
+
+def cnames():
+    records = []
+
+    for zone in zones():
+        zone_id = zone["Id"].split("/")[2]
+        zone_records = (
+            botocore_client.get(
+                "route53", "list_resource_record_sets", [], {"HostedZoneId": zone_id}
+            )
+            .extract_key("ResourceRecordSets")
+            .flatten()
+            .values()
+        )
+        records.extend([record for record in zone_records if record["Type"] == "CNAME"])
+
+    return records

aws/route53/test_route53_cnames_minimum_ttl_or_greater.py

@@ -0,0 +1,19 @@
+import pytest
+
+from aws.route53.resources import zones, cnames
+from helpers import get_param_id
+
+
+MINIMUM_TTL = 600
+
+
+@pytest.mark.parametrize(
+    "cnames", cnames(), ids=lambda record: get_param_id(record, "Name")
+)
+def test_route53_cnames_minimum_ttl_or_greater(cnames):
+    """
+    Tests that CNAMEs in Route53 have a TTL of 600 seconds or more.
+    """
+    assert (
+        int(cnames["TTL"]) >= MINIMUM_TTL
+    ), f"TTL is below the minimum of {MINIMUM_TTL}, it is currently set to {cnames['TTL']}"