Fixed issue with Lambda invoke via ARN

- Fixed an issue where Lambda invokes via an ARN was hitting real AWS.

moto/awslambda/responses.py

@@ -176,7 +176,8 @@ class LambdaResponse(BaseResponse):
     def _invoke(self, request, full_url):
         response_headers = {}
 
-        function_name = self.path.rsplit("/", 2)[-2]
+        # URL Decode in case it's a ARN:
+        function_name = unquote(self.path.rsplit("/", 2)[-2])
         qualifier = self._get_param("qualifier")
 
         response_header, payload = self.lambda_backend.invoke(

moto/awslambda/urls.py

@@ -12,6 +12,7 @@ url_paths = {
     r"{0}/(?P<api_version>[^/]+)/event-source-mappings/?$": response.event_source_mappings,
     r"{0}/(?P<api_version>[^/]+)/event-source-mappings/(?P<UUID>[\w_-]+)/?$": response.event_source_mapping,
     r"{0}/(?P<api_version>[^/]+)/functions/(?P<function_name>[\w_-]+)/invocations/?$": response.invoke,
+    r"{0}/(?P<api_version>[^/]+)/functions/(?P<resource_arn>.+)/invocations/?$": response.invoke,
     r"{0}/(?P<api_version>[^/]+)/functions/(?P<function_name>[\w_-]+)/invoke-async/?$": response.invoke_async,
     r"{0}/(?P<api_version>[^/]+)/tags/(?P<resource_arn>.+)": response.tag,
     r"{0}/(?P<api_version>[^/]+)/functions/(?P<function_name>[\w_-]+)/policy/(?P<statement_id>[\w_-]+)$": response.policy,