Fix multiple bugs encountered with boto3

* Fix path detection for deleting keys in S3 bucket
* Fix stack deletion ensure delete method exists on object
  * Previous tests were using a stack with no resources
* Fix DESCRIBE_STACK_RESOURCES_RESPONSE,
  * Previously untested code path

.gitignore

@@ -2,9 +2,11 @@ moto.egg-info/*
 dist/*
 .tox
 .coverage
+cover/
 *.pyc
 *~
 .noseids
 build/
 .idea/
 *.swp
+.DS_Store

Makefile

@@ -6,7 +6,8 @@ init:
 
 test:
 	rm -f .coverage
-	@nosetests -sv --with-coverage ./tests/
+	rm -rf cover
+	@nosetests -sv --with-coverage --cover-html ./tests/
 
 publish:
 	python setup.py sdist bdist_wheel upload

moto/cloudformation/parsing.py

@@ -379,7 +379,8 @@ class ResourceMap(collections.Mapping):
     def delete(self):
         for resource in self.resources:
             parsed_resource = self._parsed_resources.pop(resource)
-            parsed_resource.delete(self._region_name)
+            if parsed_resource and hasattr(parsed_resource, 'delete'):
+                parsed_resource.delete(self._region_name)
 
 
 class OutputMap(collections.Mapping):

moto/cloudformation/responses.py

@@ -230,21 +230,23 @@ DESCRIBE_STACK_RESOURCE_RESPONSE_TEMPLATE = """<DescribeStackResourceResponse>
 </DescribeStackResourceResponse>"""
 
 
-DESCRIBE_STACK_RESOURCES_RESPONSE = """<DescribeStackResourcesResult>
-  <StackResources>
-    {% for resource in stack.stack_resources %}
-    <member>
-      <StackId>{{ stack.stack_id }}</StackId>
-      <StackName>{{ stack.name }}</StackName>
-      <LogicalResourceId>{{ resource.logical_resource_id }}</LogicalResourceId>
-      <PhysicalResourceId>{{ resource.physical_resource_id }}</PhysicalResourceId>
-      <ResourceType>{{ resource.type }}</ResourceType>
-      <Timestamp>2010-07-27T22:27:28Z</Timestamp>
-      <ResourceStatus>{{ stack.status }}</ResourceStatus>
-    </member>
-    {% endfor %}
-  </StackResources>
-</DescribeStackResourcesResult>"""
+DESCRIBE_STACK_RESOURCES_RESPONSE = """<DescribeStackResourcesResponse>
+    <DescribeStackResourcesResult>
+      <StackResources>
+        {% for resource in stack.stack_resources %}
+        <member>
+          <StackId>{{ stack.stack_id }}</StackId>
+          <StackName>{{ stack.name }}</StackName>
+          <LogicalResourceId>{{ resource.logical_resource_id }}</LogicalResourceId>
+          <PhysicalResourceId>{{ resource.physical_resource_id }}</PhysicalResourceId>
+          <ResourceType>{{ resource.type }}</ResourceType>
+          <Timestamp>2010-07-27T22:27:28Z</Timestamp>
+          <ResourceStatus>{{ stack.status }}</ResourceStatus>
+        </member>
+        {% endfor %}
+      </StackResources>
+    </DescribeStackResourcesResult>
+</DescribeStackResourcesResponse>"""
 
 
 LIST_STACKS_RESPONSE = """<ListStacksResponse>

moto/s3bucket_path/utils.py

@@ -16,7 +16,9 @@ def parse_key_name(path):
 
 
 def is_delete_keys(request, path, bucket_name):
-    return path == u'/' + bucket_name + u'/?delete' or (
-        path == u'/' + bucket_name and
-        getattr(request, "query_string", "") == "delete"
+    return (
+        path == u'/' + bucket_name + u'/?delete' or
+        path == u'/' + bucket_name + u'?delete' or
+        (path == u'/' + bucket_name and
+         getattr(request, "query_string", "") == "delete")
     )

tests/test_cloudformation/test_cloudformation_stack_crud_boto3.py

@@ -16,11 +16,31 @@ from nose.tools import assert_raises
 dummy_template = {
     "AWSTemplateFormatVersion": "2010-09-09",
     "Description": "Stack 1",
-    "Resources": {},
+    "Resources": {
+        "EC2Instance1": {
+            "Type": "AWS::EC2::Instance",
+            "Properties": {
+                "ImageId": "ami-d3adb33f",
+                "KeyName": "dummy",
+                "InstanceType": "t2.micro",
+                "Tags": [
+                    {
+                        "Key": "Description",
+                        "Value": "Test tag"
+                    },
+                    {
+                        "Key": "Name",
+                        "Value": "Name tag for tests"
+                    }
+                ]
+            }
+        }
+    }
 }
 
 dummy_template_json = json.dumps(dummy_template)
 
+
 @mock_cloudformation
 def test_boto3_create_stack():
     cf_conn = boto3.client('cloudformation', region_name='us-east-1')
@@ -29,7 +49,8 @@ def test_boto3_create_stack():
         TemplateBody=dummy_template_json,
     )
 
-    cf_conn.get_template(StackName="test_stack")['TemplateBody'].should.equal(dummy_template)
+    cf_conn.get_template(StackName="test_stack")['TemplateBody'].should.equal(
+        dummy_template)
 
 
 @mock_cloudformation
@@ -59,7 +80,8 @@ def test_create_stack_with_notification_arn():
     )
 
     stack = list(cf.stacks.all())[0]
-    stack.notification_arns.should.contain('arn:aws:sns:us-east-1:123456789012:fake-queue')
+    stack.notification_arns.should.contain(
+        'arn:aws:sns:us-east-1:123456789012:fake-queue')
 
 
 @mock_cloudformation
@@ -78,9 +100,27 @@ def test_create_stack_from_s3_url():
         TemplateURL=key_url,
     )
 
-    cf_conn.get_template(StackName="stack_from_url")['TemplateBody'].should.equal(dummy_template)
+    cf_conn.get_template(StackName="stack_from_url")[
+        'TemplateBody'].should.equal(dummy_template)
 
 
+@mock_cloudformation
+def test_describe_stack_resources():
+    cf_conn = boto3.client('cloudformation', region_name='us-east-1')
+    cf_conn.create_stack(
+        StackName="test_stack",
+        TemplateBody=dummy_template_json,
+    )
+
+    stack = cf_conn.describe_stacks(StackName="test_stack")['Stacks'][0]
+
+    response = cf_conn.describe_stack_resources(StackName=stack['StackName'])
+    resource = response['StackResources'][0]
+    resource['LogicalResourceId'].should.equal('EC2Instance1')
+    resource['ResourceStatus'].should.equal('CREATE_COMPLETE')
+    resource['ResourceType'].should.equal('AWS::EC2::Instance')
+    resource['StackId'].should.equal(stack['StackId'])
+
 @mock_cloudformation
 def test_describe_stack_by_name():
     cf_conn = boto3.client('cloudformation', region_name='us-east-1')
@@ -102,7 +142,8 @@ def test_describe_stack_by_stack_id():
     )
 
     stack = cf_conn.describe_stacks(StackName="test_stack")['Stacks'][0]
-    stack_by_id = cf_conn.describe_stacks(StackName=stack['StackId'])['Stacks'][0]
+    stack_by_id = cf_conn.describe_stacks(StackName=stack['StackId'])['Stacks'][
+        0]
 
     stack_by_id['StackId'].should.equal(stack['StackId'])
     stack_by_id['StackName'].should.equal("test_stack")
@@ -198,9 +239,9 @@ def test_cloudformation_params():
         StackName='test_stack',
         TemplateBody=dummy_template_with_params_json,
         Parameters=[{
-            "ParameterKey": "APPNAME",
-            "ParameterValue": "testing123",
-        }],
+                        "ParameterKey": "APPNAME",
+                        "ParameterValue": "testing123",
+                    }],
     )
 
     stack.parameters.should.have.length_of(1)
@@ -227,6 +268,8 @@ def test_stack_tags():
         TemplateBody=dummy_template_json,
         Tags=tags,
     )
-    observed_tag_items = set(item for items in [tag.items() for tag in stack.tags] for item in items)
-    expected_tag_items = set(item for items in [tag.items() for tag in tags] for item in items)
+    observed_tag_items = set(
+        item for items in [tag.items() for tag in stack.tags] for item in items)
+    expected_tag_items = set(
+        item for items in [tag.items() for tag in tags] for item in items)
     observed_tag_items.should.equal(expected_tag_items)