diff --git a/tests/test_xep_0454.py b/tests/test_xep_0454.py
new file mode 100644
index 00000000..3d0860a9
--- /dev/null
+++ b/tests/test_xep_0454.py
@@ -0,0 +1,35 @@
+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+# vim:fenc=utf-8 et ts=4 sts=4 sw=4
+#
+# Copyright © 2022 Maxime “pep” Buquet <pep@bouah.net>
+#
+# Distributed under terms of the GPLv3+ license.
+
+"""
+    Tests for XEP-0454 (OMEMO Media Sharing) plugin.
+"""
+
+import unittest
+from io import BytesIO
+from slixmpp.test import SlixTest
+from slixmpp.plugins.xep_0454 import XEP_0454
+
+
+class TestMediaSharing(SlixTest):
+
+    def testEncryptDecryptSmall(self):
+        plain = b'qwertyuiop'
+        ciphertext, fragment = XEP_0454.encrypt(input_file=BytesIO(plain))
+        result = XEP_0454.decrypt(BytesIO(ciphertext), fragment)
+
+        self.assertEqual(plain, result)
+
+    def testEncryptDecrypt(self):
+        plain = b'a' * 4096 + b'qwertyuiop'
+        ciphertext, fragment = XEP_0454.encrypt(input_file=BytesIO(plain))
+        result = XEP_0454.decrypt(BytesIO(ciphertext), fragment)
+
+        self.assertEqual(plain, result)
+
+suite = unittest.TestLoader().loadTestsFromTestCase(TestMediaSharing)