问题描述
我正在尝试使用pytest和moto创建一个测试，以检查功能StackStatus（https://boto3.amazonaws.com/v1/documentation/api/latest/reference/services/cloudformation.html#CloudFormation.Client.list_stacks）返回的字典中的list_stacks()是否为DELETE_COMPLETE。
我为客户端连接创建pytest.fixture：
@pytest.fixture(scope='function')
def cf(aws_credentials):
with mock_cloudformation():
yield boto3.client('cloudformation')
然后我创建了一个哑巴模板：
@pytest.fixture(scope='function')
def template_body_data():
'The Cloud Formation template'
template_data = {
'Resources': {'MyS3Bucket': {'Type': 'AWS::S3::Bucket','Properties': {}}}
}
return template_data
@mock_cloudformation
def test_deleted_stack(cf,template_body_data):
params = {'StackName': 'teste','TemplateBody': yaml.dump(template_body_data)}
cf.create_stack(**params)
cf.delete_stack(StackName='teste')
assert check_stack_exists('teste') is False
正在测试的功能是这个：
def check_stack_exists(stack_name):
cf = get_client()
list_stack = cf.list_stacks()['StackSummaries']
for stack in list_stack:
if stack['StackStatus'] == 'DELETE_COMPLETE':
continue
if stack['StackName'] == stack_name:
return True
return False
我遇到了一个问题：
它抱怨我的模板没有BucketName：
___________________ test_check_stack_exists_deleted_stack ___________________
cf = <botocore.client.CloudFormation object at 0x7f59ca68f580>
template_body_data = {'Resources': {'MyS3Bucket': {'Properties': {},'Type': 'AWS::S3::Bucket'}}}
@mock_cloudformation
def test_check_stack_exists_deleted_stack(cf,template_body_data):
'Test the stack search if the stack exists'
params = {'StackName': 'teste','TemplateBody': yaml.dump(template_body_data)}
cf.create_stack(**params)
> cf.delete_stack(StackName='teste')
tests/test_cl_uploader.py:87:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
../../.cache/pypoetry/virtualenvs/cl-uploader-12nYBdPj-py3.8/lib/python3.8/site-packages/botocore/client.py:316: in _api_call
return self._make_api_call(operation_name,kwargs)
../../.cache/pypoetry/virtualenvs/cl-uploader-12nYBdPj-py3.8/lib/python3.8/site-packages/botocore/client.py:621: in _make_api_call
http,parsed_response = self._make_request(
../../.cache/pypoetry/virtualenvs/cl-uploader-12nYBdPj-py3.8/lib/python3.8/site-packages/botocore/client.py:641: in _make_request
return self._endpoint.make_request(operation_model,request_dict)
../../.cache/pypoetry/virtualenvs/cl-uploader-12nYBdPj-py3.8/lib/python3.8/site-packages/botocore/endpoint.py:102: in make_request
return self._send_request(request_dict,operation_model)
../../.cache/pypoetry/virtualenvs/cl-uploader-12nYBdPj-py3.8/lib/python3.8/site-packages/botocore/endpoint.py:136: in _send_request
while self._needs_retry(attempts,operation_model,request_dict,../../.cache/pypoetry/virtualenvs/cl-uploader-12nYBdPj-py3.8/lib/python3.8/site-packages/botocore/endpoint.py:253: in _needs_retry
responses = self._event_emitter.emit(
../../.cache/pypoetry/virtualenvs/cl-uploader-12nYBdPj-py3.8/lib/python3.8/site-packages/botocore/hooks.py:356: in emit
return self._emitter.emit(aliased_event_name,**kwargs)
../../.cache/pypoetry/virtualenvs/cl-uploader-12nYBdPj-py3.8/lib/python3.8/site-packages/botocore/hooks.py:228: in emit
return self._emit(event_name,kwargs)
../../.cache/pypoetry/virtualenvs/cl-uploader-12nYBdPj-py3.8/lib/python3.8/site-packages/botocore/hooks.py:211: in _emit
response = handler(**kwargs)
../../.cache/pypoetry/virtualenvs/cl-uploader-12nYBdPj-py3.8/lib/python3.8/site-packages/botocore/retryhandler.py:183: in __call__
if self._checker(attempts,response,caught_exception):
../../.cache/pypoetry/virtualenvs/cl-uploader-12nYBdPj-py3.8/lib/python3.8/site-packages/botocore/retryhandler.py:250: in __call__
should_retry = self._should_retry(attempt_number,../../.cache/pypoetry/virtualenvs/cl-uploader-12nYBdPj-py3.8/lib/python3.8/site-packages/botocore/retryhandler.py:269: in _should_retry
return self._checker(attempt_number,caught_exception)
../../.cache/pypoetry/virtualenvs/cl-uploader-12nYBdPj-py3.8/lib/python3.8/site-packages/botocore/retryhandler.py:316: in __call__
checker_response = checker(attempt_number,../../.cache/pypoetry/virtualenvs/cl-uploader-12nYBdPj-py3.8/lib/python3.8/site-packages/botocore/retryhandler.py:222: in __call__
return self._check_caught_exception(
../../.cache/pypoetry/virtualenvs/cl-uploader-12nYBdPj-py3.8/lib/python3.8/site-packages/botocore/retryhandler.py:359: in _check_caught_exception
raise caught_exception
../../.cache/pypoetry/virtualenvs/cl-uploader-12nYBdPj-py3.8/lib/python3.8/site-packages/botocore/endpoint.py:197: in _do_get_response
responses = self._event_emitter.emit(event_name,request=request)
../../.cache/pypoetry/virtualenvs/cl-uploader-12nYBdPj-py3.8/lib/python3.8/site-packages/botocore/hooks.py:356: in emit
return self._emitter.emit(aliased_event_name,kwargs)
../../.cache/pypoetry/virtualenvs/cl-uploader-12nYBdPj-py3.8/lib/python3.8/site-packages/botocore/hooks.py:211: in _emit
response = handler(**kwargs)
../../.cache/pypoetry/virtualenvs/cl-uploader-12nYBdPj-py3.8/lib/python3.8/site-packages/moto/core/models.py:322: in __call__
status,headers,body = response_callback(
../../.cache/pypoetry/virtualenvs/cl-uploader-12nYBdPj-py3.8/lib/python3.8/site-packages/moto/core/responses.py:202: in dispatch
return cls()._dispatch(*args,**kwargs)
../../.cache/pypoetry/virtualenvs/cl-uploader-12nYBdPj-py3.8/lib/python3.8/site-packages/moto/core/responses.py:312: in _dispatch
return self.call_action()
../../.cache/pypoetry/virtualenvs/cl-uploader-12nYBdPj-py3.8/lib/python3.8/site-packages/moto/core/responses.py:397: in call_action
response = method()
../../.cache/pypoetry/virtualenvs/cl-uploader-12nYBdPj-py3.8/lib/python3.8/site-packages/moto/cloudformation/responses.py:380: in delete_stack
self.cloudformation_backend.delete_stack(name_or_stack_id)
../../.cache/pypoetry/virtualenvs/cl-uploader-12nYBdPj-py3.8/lib/python3.8/site-packages/moto/cloudformation/models.py:734: in delete_stack
self.delete_stack(stack.stack_id)
../../.cache/pypoetry/virtualenvs/cl-uploader-12nYBdPj-py3.8/lib/python3.8/site-packages/moto/cloudformation/models.py:726: in delete_stack
stack.delete()
../../.cache/pypoetry/virtualenvs/cl-uploader-12nYBdPj-py3.8/lib/python3.8/site-packages/moto/cloudformation/models.py:363: in delete
self.resource_map.delete()
../../.cache/pypoetry/virtualenvs/cl-uploader-12nYBdPj-py3.8/lib/python3.8/site-packages/moto/cloudformation/parsing.py:677: in delete
raise last_exception
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
self = <moto.cloudformation.parsing.ResourceMap object at 0x7f59cabd3940>
def delete(self):
remaining_resources = set(self.resources)
tries = 1
while remaining_resources and tries < 5:
for resource in remaining_resources.copy():
parsed_resource = self._parsed_resources.get(resource)
try:
if parsed_resource and hasattr(parsed_resource,"delete"):
parsed_resource.delete(self._region_name)
else:
resource_name_attribute = (
parsed_resource.cloudformation_name_type()
if hasattr(parsed_resource,"cloudformation_name_type")
else resource_name_property_from_type(parsed_resource.type)
)
if resource_name_attribute:
resource_json = self._resource_json_map[
parsed_resource.logical_resource_id
]
> resource_name = resource_json["Properties"][
resource_name_attribute
]
E KeyError: 'BucketName'
../../.cache/pypoetry/virtualenvs/cl-uploader-12nYBdPj-py3.8/lib/python3.8/site-packages/moto/cloudformation/parsing.py:662: KeyError
================================= FAILURES ==================================
___________________ test_check_stack_exists_deleted_stack ___________________
cf = <botocore.client.CloudFormation object at 0x7f7a02ca4ee0>
template_body_data = {'Resources': {'MyS3Bucket': {'Properties': {'BucketName': 'teste'},'TemplateBody': yaml.dump(template_body_data)}
> cf.create_stack(**params)
tests/test_cl_uploader.py:86:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
../../.cache/pypoetry/virtualenvs/cl-uploader-12nYBdPj-py3.8/lib/python3.8/site-packages/botocore/client.py:316: in _api_call
return self._make_api_call(operation_name,kwargs)
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
self = <botocore.client.CloudFormation object at 0x7f7a02ca4ee0>
operation_name = 'CreateStack'
api_params = {'StackName': 'teste','TemplateBody': 'Resources:\n MyS3Bucket:\n Properties:\n BucketName: teste\n Type: AWS::S3::Bucket\n'}
def _make_api_call(self,operation_name,api_params):
operation_model = self._service_model.operation_model(operation_name)
service_name = self._service_model.service_name
history_recorder.record('API_CALL',{
'service': service_name,'operation': operation_name,'params': api_params,})
if operation_model.deprecated:
logger.debug('Warning: %s.%s() is deprecated',service_name,operation_name)
request_context = {
'client_region': self.Meta.region_name,'client_config': self.Meta.config,'has_streaming_input': operation_model.has_streaming_input,'auth_type': operation_model.auth_type,}
request_dict = self._convert_to_request_dict(
api_params,context=request_context)
service_id = self._service_model.service_id.hyphenize()
handler,event_response = self.Meta.events.emit_until_response(
'before-call.{service_id}.{operation_name}'.format(
service_id=service_id,operation_name=operation_name),model=operation_model,params=request_dict,request_signer=self._request_signer,context=request_context)
if event_response is not None:
http,parsed_response = event_response
else:
http,parsed_response = self._make_request(
operation_model,request_context)
self.Meta.events.emit(
'after-call.{service_id}.{operation_name}'.format(
service_id=service_id,http_response=http,parsed=parsed_response,context=request_context
)
if http.status_code >= 300:
error_code = parsed_response.get("Error",{}).get("Code")
error_class = self.exceptions.from_code(error_code)
> raise error_class(parsed_response,operation_name)
E botocore.exceptions.ClientError: An error occurred (UnkNown) when calling the CreateStack operation: UnkNown
../../.cache/pypoetry/virtualenvs/cl-uploader-12nYBdPj-py3.8/lib/python3.8/site-packages/botocore/client.py:635: ClientError
解决方法
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