CloudFront: Bug distribution with tags (#5467)

IMPLEMENTATION_COVERAGE.md

@@ -613,7 +613,7 @@
 - [ ] create_cache_policy
 - [ ] create_cloud_front_origin_access_identity
 - [X] create_distribution
-- [ ] create_distribution_with_tags
+- [X] create_distribution_with_tags
 - [ ] create_field_level_encryption_config
 - [ ] create_field_level_encryption_profile
 - [ ] create_function
@@ -6465,4 +6465,4 @@
 - workspaces
 - workspaces-web
 - xray
-</details>
+</details>

moto/cloudfront/responses.py

@@ -41,6 +41,8 @@ class CloudFrontResponse(BaseResponse):
         if "DistributionConfigWithTags" in params:
             config = params.get("DistributionConfigWithTags")
             tags = (config.get("Tags", {}).get("Items") or {}).get("Tag", [])
+            if not isinstance(tags, list):
+                tags = [tags]
         else:
             config = params
             tags = []

tests/test_cloudfront/test_cloudfront_dist_tags.py

@@ -19,3 +19,19 @@ def test_create_distribution_with_tags():
     resp["Tags"].should.have.key("Items").length_of(2)
     resp["Tags"]["Items"].should.contain({"Key": "k1", "Value": "v1"})
     resp["Tags"]["Items"].should.contain({"Key": "k2", "Value": "v2"})
+
+
+@mock_cloudfront
+def test_create_distribution_with_tags_only_one_tag():
+    client = boto3.client("cloudfront", region_name="us-west-1")
+    config = scaffold.example_distribution_config("ref")
+    tags = {"Items": [{"Key": "k1", "Value": "v1"}]}
+    config = {"DistributionConfig": config, "Tags": tags}
+
+    resp = client.create_distribution_with_tags(DistributionConfigWithTags=config)
+    resp.should.have.key("Distribution")
+
+    resp = client.list_tags_for_resource(Resource=resp["Distribution"]["ARN"])
+    resp.should.have.key("Tags")
+    resp["Tags"].should.have.key("Items").length_of(1)
+    resp["Tags"]["Items"].should.contain({"Key": "k1", "Value": "v1"})