From 143134816155bc70e4c17a2a594394b2b4335737 Mon Sep 17 00:00:00 2001
From: usmankb <usman@krazybee.com>
Date: Sat, 2 May 2020 01:33:58 +0530
Subject: [PATCH] Fix SQS send_message_batch empty array Exception handling

---
 moto/sqs/responses.py      |  3 +++
 tests/test_sqs/test_sqs.py | 15 +++++++++++++++
 2 files changed, 18 insertions(+)

diff --git a/moto/sqs/responses.py b/moto/sqs/responses.py
index 8acea0799..f5481cc10 100644
--- a/moto/sqs/responses.py
+++ b/moto/sqs/responses.py
@@ -285,6 +285,9 @@ class SQSResponse(BaseResponse):
                     "MessageAttributes": message_attributes,
                 }
 
+        if entries == {}:
+            raise EmptyBatchRequest()
+
         messages = self.sqs_backend.send_message_batch(queue_name, entries)
 
         template = self.response_template(SEND_MESSAGE_BATCH_RESPONSE)
diff --git a/tests/test_sqs/test_sqs.py b/tests/test_sqs/test_sqs.py
index f2ab8c37c..9deb8d8e2 100644
--- a/tests/test_sqs/test_sqs.py
+++ b/tests/test_sqs/test_sqs.py
@@ -1147,6 +1147,21 @@ def test_send_message_batch_errors():
     )
 
 
+@mock_sqs
+def test_send_message_batch_with_empty_list():
+    client = boto3.client("sqs", region_name="us-east-1")
+
+    response = client.create_queue(QueueName="test-queue")
+    queue_url = response["QueueUrl"]
+
+    client.send_message_batch.when.called_with(
+        QueueUrl=queue_url, Entries=[]
+    ).should.throw(
+        ClientError,
+        "There should be at least one SendMessageBatchRequestEntry in the request.",
+    )
+
+
 @mock_sqs
 def test_batch_change_message_visibility():
     if os.environ.get("TEST_SERVER_MODE", "false").lower() == "true":