From 39d9fbcd02263cbc8983d9bdfd9656e48eeaa031 Mon Sep 17 00:00:00 2001
From: Andrew Garrett <andrew.garrett@getbraintree.com>
Date: Mon, 29 Feb 2016 19:50:29 +0000
Subject: [PATCH] Added resource deletion upon stack deletion

Only implemented for ASGs and LCs since they're all we cared about for
our particular problem. It should be easy to follow this pattern for
other resource types, though.

Signed-off-by: Scott Greene <scott.greene@getbraintree.com>
---
 moto/autoscaling/models.py     |  8 ++++++++
 moto/cloudformation/models.py  | 11 ++++++++---
 moto/cloudformation/parsing.py |  5 +++++
 3 files changed, 21 insertions(+), 3 deletions(-)

diff --git a/moto/autoscaling/models.py b/moto/autoscaling/models.py
index d7f0db62..5a044c03 100644
--- a/moto/autoscaling/models.py
+++ b/moto/autoscaling/models.py
@@ -80,6 +80,10 @@ class FakeLaunchConfiguration(object):
         )
         return config
 
+    def delete(self, region_name):
+        backend = autoscaling_backends[region_name]
+        backend.delete_launch_configuration(self.name)
+
     @property
     def physical_resource_id(self):
         return self.name
@@ -167,6 +171,10 @@ class FakeAutoScalingGroup(object):
         )
         return group
 
+    def delete(self, region_name):
+        backend = autoscaling_backends[region_name]
+        backend.delete_autoscaling_group(self.name)
+
     @property
     def physical_resource_id(self):
         return self.name
diff --git a/moto/cloudformation/models.py b/moto/cloudformation/models.py
index cd99856f..d8793b8e 100644
--- a/moto/cloudformation/models.py
+++ b/moto/cloudformation/models.py
@@ -52,6 +52,10 @@ class FakeStack(object):
         self.resource_map.update(json.loads(template))
         self.output_map = self._create_output_map()
 
+    def delete(self):
+        self.resource_map.delete()
+        self.status = 'DELETE_COMPLETE'
+
 
 class CloudFormationBackend(BaseBackend):
 
@@ -112,13 +116,14 @@ class CloudFormationBackend(BaseBackend):
         if name_or_stack_id in self.stacks:
             # Delete by stack id
             stack = self.stacks.pop(name_or_stack_id, None)
-            stack.status = 'DELETE_COMPLETE'
+            stack.delete()
             self.deleted_stacks[stack.stack_id] = stack
             return self.stacks.pop(name_or_stack_id, None)
         else:
             # Delete by stack name
-            stack_to_delete = [stack for stack in self.stacks.values() if stack.name == name_or_stack_id][0]
-            self.delete_stack(stack_to_delete.stack_id)
+            for stack in list(self.stacks.values()):
+                if stack.name == name_or_stack_id:
+                    self.delete_stack(stack.stack_id)
 
 
 cloudformation_backends = {}
diff --git a/moto/cloudformation/parsing.py b/moto/cloudformation/parsing.py
index ebdd8363..32b9f351 100644
--- a/moto/cloudformation/parsing.py
+++ b/moto/cloudformation/parsing.py
@@ -374,6 +374,11 @@ class ResourceMap(collections.Mapping):
                 changed_resource = parse_and_update_resource(resource_name, resource_json, self, self._region_name)
                 self._parsed_resources[resource_name] = changed_resource
 
+    def delete(self):
+        for resource in self.resources:
+            parsed_resource = self._parsed_resources.pop(resource)
+            parsed_resource.delete(self._region_name)
+
 
 class OutputMap(collections.Mapping):
     def __init__(self, resources, template):