Move BytesDeserializer test

Author: Balaji Veeramani

tests/unit/sagemaker/test_deserializers.py

@@ -0,0 +1,25 @@
+# Copyright 2017-2020 Amazon.com, Inc. or its affiliates. All Rights Reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License"). You
+# may not use this file except in compliance with the License. A copy of
+# the License is located at
+#
+#     http://aws.amazon.com/apache2.0/
+#
+# or in the "license" file accompanying this file. This file is
+# distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF
+# ANY KIND, either express or implied. See the License for the specific
+# language governing permissions and limitations under the License.
+from __future__ import absolute_import
+
+import io
+
+from sagemaker.deserializers import BytesDeserializer
+
+
+def test_bytes_deserializer():
+    deserializer = BytesDeserializer()
+
+    result = deserializer.deserialize(io.BytesIO(b"[1, 2, 3]"), "application/json")
+
+    assert result == b"[1, 2, 3]"