Add error handling to sqs.delete_message

moto/sqs/exceptions.py

@@ -7,9 +7,14 @@ class MessageNotInflight(Exception):
     status_code = 400
 
 
-class ReceiptHandleIsInvalid(Exception):
-    description = "The receipt handle provided is not valid."
-    status_code = 400
+class ReceiptHandleIsInvalid(RESTError):
+    code = 400
+
+    def __init__(self):
+        super(ReceiptHandleIsInvalid, self).__init__(
+            'ReceiptHandleIsInvalid',
+            'The input receipt handle is invalid.'
+        )
 
 
 class MessageAttributesInvalid(Exception):

moto/sqs/models.py

@@ -669,6 +669,10 @@ class SQSBackend(BaseBackend):
 
     def delete_message(self, queue_name, receipt_handle):
         queue = self.get_queue(queue_name)
+
+        if not any(message.receipt_handle == receipt_handle for message in queue._messages):
+            raise ReceiptHandleIsInvalid()
+
         new_messages = []
         for message in queue._messages:
             # Only delete message if it is not visible and the reciept_handle

moto/sqs/responses.py

@@ -118,7 +118,7 @@ class SQSResponse(BaseResponse):
                 receipt_handle=receipt_handle,
                 visibility_timeout=visibility_timeout
             )
-        except (ReceiptHandleIsInvalid, MessageNotInflight) as e:
+        except MessageNotInflight as e:
             return "Invalid request: {0}".format(e.description), dict(status=e.status_code)
 
         template = self.response_template(CHANGE_MESSAGE_VISIBILITY_RESPONSE)