From 0b7e990bbfed5e5ba8fd80570519dcd81d0a7e04 Mon Sep 17 00:00:00 2001
From: jmsanders <10291790+jmsanders@users.noreply.github.com>
Date: Fri, 7 Feb 2020 15:50:08 -0600
Subject: [PATCH] Limit SQS list_queues response to 1000 queues

The maximum number of queues that the ListQueues API can return is 1000:

https://docs.aws.amazon.com/AWSSimpleQueueService/latest/APIReference/API_ListQueues.html
---
 moto/sqs/models.py         |  2 +-
 tests/test_sqs/test_sqs.py | 20 ++++++++++++++++++++
 2 files changed, 21 insertions(+), 1 deletion(-)

diff --git a/moto/sqs/models.py b/moto/sqs/models.py
index 8fbe90108..a54d91c43 100644
--- a/moto/sqs/models.py
+++ b/moto/sqs/models.py
@@ -567,7 +567,7 @@ class SQSBackend(BaseBackend):
         for name, q in self.queues.items():
             if prefix_re.search(name):
                 qs.append(q)
-        return qs
+        return qs[:1000]
 
     def get_queue(self, queue_name):
         queue = self.queues.get(queue_name)
diff --git a/tests/test_sqs/test_sqs.py b/tests/test_sqs/test_sqs.py
index 93d388117..f2ab8c37c 100644
--- a/tests/test_sqs/test_sqs.py
+++ b/tests/test_sqs/test_sqs.py
@@ -1759,3 +1759,23 @@ def test_receive_message_for_queue_with_receive_message_wait_time_seconds_set():
     )
 
     queue.receive_messages()
+
+
+@mock_sqs
+def test_list_queues_limits_to_1000_queues():
+    client = boto3.client("sqs", region_name="us-east-1")
+
+    for i in range(1001):
+        client.create_queue(QueueName="test-queue-{0}".format(i))
+
+    client.list_queues()["QueueUrls"].should.have.length_of(1000)
+    client.list_queues(QueueNamePrefix="test-queue")["QueueUrls"].should.have.length_of(
+        1000
+    )
+
+    resource = boto3.resource("sqs", region_name="us-east-1")
+
+    list(resource.queues.all()).should.have.length_of(1000)
+    list(resource.queues.filter(QueueNamePrefix="test-queue")).should.have.length_of(
+        1000
+    )