diff --git a/moto/awslambda/models.py b/moto/awslambda/models.py
index 80131dedc..af87b5392 100644
--- a/moto/awslambda/models.py
+++ b/moto/awslambda/models.py
@@ -229,6 +229,7 @@ class LayerVersion(CloudFormationModel):
 
         # optional
         self.description = spec.get("Description", "")
+        self.compatible_architectures = spec.get("CompatibleArchitectures", [])
         self.compatible_runtimes = spec.get("CompatibleRuntimes", [])
         self.license_info = spec.get("LicenseInfo", "")
 
@@ -279,6 +280,7 @@ class LayerVersion(CloudFormationModel):
             "LayerArn": self._layer.layer_arn,
             "LayerVersionArn": self.arn,
             "CreatedDate": self.created_date,
+            "CompatibleArchitectures": self.compatible_architectures,
             "CompatibleRuntimes": self.compatible_runtimes,
             "Description": self.description,
             "LicenseInfo": self.license_info,
diff --git a/moto/dax/models.py b/moto/dax/models.py
index 2d261f513..83f7b49b4 100644
--- a/moto/dax/models.py
+++ b/moto/dax/models.py
@@ -75,6 +75,7 @@ class DaxCluster(BaseModel, ManagedState):
         replication_factor,
         iam_role_arn,
         sse_specification,
+        encryption_type,
     ):
         # Configure ManagedState
         super().__init__(
@@ -100,6 +101,7 @@ class DaxCluster(BaseModel, ManagedState):
             {"SecurityGroupIdentifier": f"sg-{get_random_hex(10)}", "Status": "active"}
         ]
         self.sse_specification = sse_specification
+        self.encryption_type = encryption_type
 
     def _create_new_node(self, idx):
         return DaxNode(endpoint=self.endpoint, name=self.name, index=idx)
@@ -142,7 +144,7 @@ class DaxCluster(BaseModel, ManagedState):
                 if self.sse_specification.get("Enabled") is True
                 else "DISABLED"
             },
-            "ClusterEndpointEncryptionType": "NONE",
+            "ClusterEndpointEncryptionType": self.encryption_type,
             "SecurityGroups": self.security_groups,
         }
         if use_full_repr:
@@ -183,10 +185,11 @@ class DAXBackend(BaseBackend):
         iam_role_arn,
         tags,
         sse_specification,
+        encryption_type,
     ):
         """
         The following parameters are not yet processed:
-        AvailabilityZones, SubnetGroupNames, SecurityGroups, PreferredMaintenanceWindow, NotificationTopicArn, ParameterGroupName, ClusterEndpointEncryptionType
+        AvailabilityZones, SubnetGroupNames, SecurityGroups, PreferredMaintenanceWindow, NotificationTopicArn, ParameterGroupName
         """
         cluster = DaxCluster(
             region=self.region_name,
@@ -196,6 +199,7 @@ class DAXBackend(BaseBackend):
             replication_factor=replication_factor,
             iam_role_arn=iam_role_arn,
             sse_specification=sse_specification,
+            encryption_type=encryption_type,
         )
         self.clusters[cluster_name] = cluster
         self._tagger.tag_resource(cluster.arn, tags)
diff --git a/moto/dax/responses.py b/moto/dax/responses.py
index 914071eaf..3ebd66026 100644
--- a/moto/dax/responses.py
+++ b/moto/dax/responses.py
@@ -20,6 +20,7 @@ class DAXResponse(BaseResponse):
         iam_role_arn = params.get("IamRoleArn")
         tags = params.get("Tags", [])
         sse_specification = params.get("SSESpecification", {})
+        encryption_type = params.get("ClusterEndpointEncryptionType", "NONE")
 
         self._validate_arn(iam_role_arn)
         self._validate_name(cluster_name)
@@ -32,6 +33,7 @@ class DAXResponse(BaseResponse):
             iam_role_arn=iam_role_arn,
             tags=tags,
             sse_specification=sse_specification,
+            encryption_type=encryption_type,
         )
         return json.dumps(dict(Cluster=cluster.to_json()))
 
diff --git a/moto/ecr/models.py b/moto/ecr/models.py
index 4fb2020b4..022ffb872 100644
--- a/moto/ecr/models.py
+++ b/moto/ecr/models.py
@@ -806,7 +806,10 @@ class ECRBackend(BaseBackend):
 
         policy = json.loads(policy_text)
         for statement in policy["Statement"]:
-            if set(statement["Action"]) - VALID_ACTIONS:
+            action = statement["Action"]
+            if isinstance(action, str):
+                action = [action]
+            if set(action) - VALID_ACTIONS:
                 raise MalformedPolicyDocument()
 
     def put_registry_policy(self, policy_text):
diff --git a/tests/terraformtests/bin/run_go_test b/tests/terraformtests/bin/run_go_test
index 3683fdf43..3a6c7a30d 100755
--- a/tests/terraformtests/bin/run_go_test
+++ b/tests/terraformtests/bin/run_go_test
@@ -9,6 +9,7 @@ PATCH="etc/0001-Patch-Hardcode-endpoints-to-local-server.patch"
 (git apply $pwd/etc/0001-Patch-Hardcode-endpoints-to-local-server.patch > /dev/null 2>&1 && echo "Patched endpoints") || echo "Not patching endpoints - Directory was probably already patched."
 (git apply $pwd/etc/0002-EC2-reduce-wait-times.patch > /dev/null 2>&1 && echo "Patched EC2") || echo "Not patching EC2 - Directory was probably already patched."
 (git apply $pwd/etc/0003-Patch-IAM-wait-times.patch > /dev/null 2>&1 && echo "Patched IAM") || echo "Not patching IAM - Directory was probably already patched."
+(git apply $pwd/etc/0004-DAX-Reduce-wait-times.patch > /dev/null 2>&1 && echo "Patched DAX") || echo "Not patching DAX - Directory was probably already patched."
 )
 
 (
diff --git a/tests/terraformtests/terraform-tests.failures.txt b/tests/terraformtests/terraform-tests.failures.txt
index 4993b1804..4790a6217 100644
--- a/tests/terraformtests/terraform-tests.failures.txt
+++ b/tests/terraformtests/terraform-tests.failures.txt
@@ -12,7 +12,6 @@ TestAccCloudTrail
 TestAccEventsRule
 TestAccCloudWatchEventTarget_ssmDocument
 TestAccCloudWatchMetricAlarm
-TestAccDAX
 TestAccEC2DefaultSecurityGroup
 TestAccEC2DefaultVPCAndSubnet
 TestAccMetaDefaultTagsDataSource
@@ -38,8 +37,6 @@ TestAccEc2TransitGatewayDxGatewayAttachmentDataSource
 TestAccEc2TransitGatewayPeeringAttachmentAccepter
 TestAccEc2TransitGatewayRouteTableAssociation
 TestAccEc2TransitGatewayVpcAttachment
-TestAccEcrRegistryPolicy
-TestAccEcrReplicationConfiguration
 TestAccEC2EgressOnlyInternetGateway
 TestAccEFSMountTarget
 TestAccEksClusterDataSource
@@ -48,8 +45,6 @@ TestAccIotThing
 TestAccIPRanges
 TestAccKinesisStream
 TestAccELBPolicy
-TestAccLambdaAlias
-TestAccLambdaLayerVersion
 TestAccPartition
 TestAccPinpointApp
 TestAccPinpointEventStream
diff --git a/tests/terraformtests/terraform-tests.success.txt b/tests/terraformtests/terraform-tests.success.txt
index b1724ddf3..e0480c840 100644
--- a/tests/terraformtests/terraform-tests.success.txt
+++ b/tests/terraformtests/terraform-tests.success.txt
@@ -30,6 +30,9 @@ cognitoidp:
   - TestAccCognitoUserInGroup_
   - TestAccCognitoIDPUserPoolClients
   - TestAccCognitoIDPUserPoolClientDataSource
+dax:
+  - TestAccDAXCluster_basic
+  - TestAccDAXCluster_Encryption
 dynamodb:
   - TestAccDynamoDBTableItem
 ec2:
@@ -40,13 +43,18 @@ ec2:
   - TestAccEC2InternetGateway_
   - TestAccEC2NATGateway_
   - TestAccEC2RouteTableAssociation_
+  - TestAccEC2SecurityGroups
   - TestAccEC2SpotInstanceRequest_disappears
   - TestAccEC2SpotInstanceRequest_interruptUpdate
   - TestAccEC2VPCEndpointService_
+  - TestAccEC2VPCPeeringConnectionAccepter_
+  - TestAccEC2VPCsDataSource
   - TestAccEC2VPNGateway_
   - TestAccEC2VPNGatewayAttachment_
 ecr:
   - TestAccECRLifecyclePolicy
+  - TestAccECRRegistryPolicy
+  - TestAccECRReplicationConfiguration
   - TestAccECRRepository
   - TestAccECRRepositoryDataSource
   - TestAccECRRepositoryPolicy
@@ -107,6 +115,9 @@ kms:
   - TestAccKMSKey_Policy_iamServiceLinkedRole
   - TestAccKMSSecretDataSource
   - TestAccKMSSecretsDataSource
+lambda:
+  - TestAccLambdaAlias_
+  - TestAccLambdaLayerVersion_
 meta:
   - TestAccMetaBillingServiceAccountDataSource
 mq:
diff --git a/tests/test_awslambda/test_lambda_layers.py b/tests/test_awslambda/test_lambda_layers.py
index 542771e2e..8e0be4001 100644
--- a/tests/test_awslambda/test_lambda_layers.py
+++ b/tests/test_awslambda/test_lambda_layers.py
@@ -76,6 +76,7 @@ def test_get_lambda_layers():
                 "CompatibleRuntimes": ["python3.6"],
                 "Description": "",
                 "LicenseInfo": "MIT",
+                "CompatibleArchitectures": [],
             },
             {
                 "Version": 2,
@@ -83,6 +84,7 @@ def test_get_lambda_layers():
                 "CompatibleRuntimes": ["python3.6"],
                 "Description": "",
                 "LicenseInfo": "MIT",
+                "CompatibleArchitectures": [],
             },
         ]
     )
@@ -154,10 +156,16 @@ def test_get_layer_version():
         Content={"ZipFile": get_test_zip_file1()},
         CompatibleRuntimes=["python3.6"],
         LicenseInfo="MIT",
+        CompatibleArchitectures=["x86_64"],
     )
     layer_version = resp["Version"]
 
     resp = conn.get_layer_version(LayerName=layer_name, VersionNumber=layer_version)
+    resp.should.have.key("Description").equals("")
+    resp.should.have.key("Version").equals(1)
+    resp.should.have.key("CompatibleArchitectures").equals(["x86_64"])
+    resp.should.have.key("CompatibleRuntimes").equals(["python3.6"])
+    resp.should.have.key("LicenseInfo").equals("MIT")
 
 
 @mock_lambda
diff --git a/tests/test_cloudformation/test_cloudformation_stack_integration.py b/tests/test_cloudformation/test_cloudformation_stack_integration.py
index 308cc499d..21f602401 100644
--- a/tests/test_cloudformation/test_cloudformation_stack_integration.py
+++ b/tests/test_cloudformation/test_cloudformation_stack_integration.py
@@ -281,6 +281,7 @@ def lambda_handler(event, context):
                     "Description": "Test Layer",
                     "CompatibleRuntimes": ["python2.7", "python3.6"],
                     "LicenseInfo": "MIT",
+                    "CompatibleArchitectures": [],
                 },
             },
         },
@@ -305,6 +306,7 @@ def lambda_handler(event, context):
                 "CompatibleRuntimes": ["python2.7", "python3.6"],
                 "Description": "Test Layer",
                 "LicenseInfo": "MIT",
+                "CompatibleArchitectures": [],
             }
         ]
     )
diff --git a/tests/test_dax/test_dax.py b/tests/test_dax/test_dax.py
index 0203837cc..4091d2f0b 100644
--- a/tests/test_dax/test_dax.py
+++ b/tests/test_dax/test_dax.py
@@ -79,6 +79,7 @@ def test_create_cluster_with_sse_enabled():
         ReplicationFactor=3,
         IamRoleArn=iam_role_arn,
         SSESpecification={"Enabled": True},
+        ClusterEndpointEncryptionType="TLS",
     )["Cluster"]
 
     described_cluster = client.describe_clusters(ClusterNames=["daxcluster"])[
@@ -88,6 +89,7 @@ def test_create_cluster_with_sse_enabled():
     for cluster in [created_cluster, described_cluster]:
         cluster["ClusterName"].should.equal("daxcluster")
         cluster["SSEDescription"].should.equal({"Status": "ENABLED"})
+        cluster["ClusterEndpointEncryptionType"].should.equal("TLS")
 
 
 @mock_dax
diff --git a/tests/test_ecr/test_ecr_boto3.py b/tests/test_ecr/test_ecr_boto3.py
index aaa49d6d6..f498b79a4 100644
--- a/tests/test_ecr/test_ecr_boto3.py
+++ b/tests/test_ecr/test_ecr_boto3.py
@@ -2053,7 +2053,12 @@ def test_delete_lifecycle_policy_error_policy_not_exists():
 
 
 @mock_ecr
-def test_put_registry_policy():
+@pytest.mark.parametrize(
+    "actions",
+    ["ecr:CreateRepository", ["ecr:CreateRepository", "ecr:ReplicateImage"]],
+    ids=["single-action", "multiple-actions"],
+)
+def test_put_registry_policy(actions):
     # given
     client = boto3.client("ecr", region_name="eu-central-1")
     policy = {
@@ -2064,7 +2069,7 @@ def test_put_registry_policy():
                 "Principal": {
                     "AWS": ["arn:aws:iam::111111111111:root", "222222222222"]
                 },
-                "Action": ["ecr:CreateRepository", "ecr:ReplicateImage"],
+                "Action": actions,
                 "Resource": "*",
             }
         ],