add integration tests

Author: aaythapa

integration/combination/test_function_with_alias.py

@@ -160,6 +160,42 @@ def test_alias_with_event_sources_get_correct_permissions(self):
         function_policy = json.loads(function_policy_str)
         self.assertEqual(len(function_policy["Statement"]), len(permission_resources))
 
+    def test_function_with_alias_and_layer_version(self):
+        self.create_and_verify_stack("combination/function_with_alias_all_properties_and_layer_version")
+        alias_name = "Live"
+        function_name = self.get_physical_id_by_type("AWS::Lambda::Function")
+        version_ids = self.get_function_version_by_name(function_name)
+        self.assertEqual(["1"], version_ids)
+
+        alias = self.get_alias(function_name, alias_name)
+        self.assertEqual("1", alias["FunctionVersion"])
+
+        # Changing Description in the LayerVersion should create a new version, and leave the existing version intact
+        self.set_template_resource_property("MyLayer", "Description", "test123")
+        self.update_stack()
+
+        version_ids = self.get_function_version_by_name(function_name)
+        self.assertEqual(["1", "2"], version_ids)
+
+        alias = self.get_alias(function_name, alias_name)
+        self.assertEqual("2", alias["FunctionVersion"])
+
+        # Changing ContentUri in LayerVersion should create a new version, and leave the existing version intact
+        self.set_template_resource_property("MyLayer", "ContentUri", self.file_to_s3_uri_map["layer2.zip"]["uri"])
+        self.update_stack()
+
+        version_ids = self.get_function_version_by_name(function_name)
+        self.assertEqual(["1", "2", "3"], version_ids)
+
+        alias = self.get_alias(function_name, alias_name)
+        self.assertEqual("3", alias["FunctionVersion"])
+
+        # Make sure the stack has only One Version & One Alias resource
+        alias = self.get_stack_resources("AWS::Lambda::Alias")
+        versions = self.get_stack_resources("AWS::Lambda::Version")
+        self.assertEqual(len(alias), 1)
+        self.assertEqual(len(versions), 1)
+
     def get_function_version_by_name(self, function_name):
         lambda_client = self.client_provider.lambda_client
         versions = lambda_client.list_versions_by_function(FunctionName=function_name)["Versions"]

integration/config/file_to_s3_map.json

@@ -23,6 +23,10 @@
     "type": "s3",
     "uri": ""
   },
+  "layer2.zip": {
+    "type": "s3",
+    "uri": ""
+  },
   "swagger1.json": {
     "type": "s3",
     "uri": ""

integration/helpers/file_resources.py

@@ -2,6 +2,7 @@
     "code.zip": {"type": "s3", "uri": ""},
     "code2.zip": {"type": "s3", "uri": ""},
     "layer1.zip": {"type": "s3", "uri": ""},
+    "layer2.zip": {"type": "s3", "uri": ""},
     "swagger1.json": {"type": "s3", "uri": ""},
     "swagger2.json": {"type": "s3", "uri": ""},
     "binary-media.zip": {"type": "s3", "uri": ""},

integration/resources/expected/combination/function_with_alias_all_properties_and_layer_version.json

@@ -0,0 +1,22 @@
+[
+  {
+    "LogicalResourceId": "MyLambdaFunction",
+    "ResourceType": "AWS::Lambda::Function"
+  },
+  {
+    "LogicalResourceId": "MyLambdaFunctionRole",
+    "ResourceType": "AWS::IAM::Role"
+  },
+  {
+    "LogicalResourceId": "MyLambdaFunctionAliasLive",
+    "ResourceType": "AWS::Lambda::Alias"
+  },
+  {
+    "LogicalResourceId": "MyLambdaFunctionVersion",
+    "ResourceType": "AWS::Lambda::Version"
+  },
+  {
+    "LogicalResourceId": "MyLayer",
+    "ResourceType": "AWS::Lambda::LayerVersion"
+  }
+]

integration/resources/templates/combination/function_with_alias_all_properties_and_layer_version.yaml

@@ -0,0 +1,21 @@
+Resources:
+  MyLambdaFunction:
+    Type: AWS::Serverless::Function
+    Properties:
+      CodeUri: ${codeuri}
+      Handler: index.handler
+      Runtime: nodejs20.x
+      AutoPublishAlias: Live
+      AutoPublishAliasAllProperties: true
+      Layers:
+      - !Ref MyLayer
+
+  MyLayer:
+    Type: AWS::Serverless::LayerVersion
+    Properties:
+      ContentUri: ${contenturi}
+      RetentionPolicy: Delete
+      PublishLambdaVersion: true
+      Description: test
+Metadata:
+  SamTransformTest: true