diff --git a/tests/test_io.py b/tests/test_io.py
new file mode 100644
index 00000000..3167eb8b
--- /dev/null
+++ b/tests/test_io.py
@@ -0,0 +1,51 @@
+#!/usr/bin/env python3
+"""
+Tests for io methods
+
+File: tests/test_io.py
+
+Copyright 2024 NeuroML contributors
+"""
+
+import logging
+import os
+
+from pyneuroml.errors import NMLFileTypeError
+from pyneuroml.io import confirm_file_type
+
+from . import BaseTestCase
+
+logger = logging.getLogger(__name__)
+logger.setLevel(logging.DEBUG)
+
+
+class TestIo(BaseTestCase):
+    """Test io module"""
+
+    def test_confirm_file_type(self):
+        """Test confirm_file_type method."""
+
+        # LEMS file with xml extension
+        test_lems_file = "a_test_lems_file.xml"
+        with open(test_lems_file, "w") as f:
+            print("<LEMS> </LEMS>", file=f)
+        confirm_file_type(test_lems_file, ["xml"])
+
+        # lems file with non xml extension but provided tag
+        test_lems_file2 = "a_test_lems_file.lems"
+        with open(test_lems_file2, "w") as f:
+            print("<LEMS> </LEMS>", file=f)
+
+        confirm_file_type(test_lems_file2, ["xml"], "lems")
+
+        # lems file with non xml and bad tag: should fail
+        with self.assertRaises(NMLFileTypeError):
+            test_lems_file3 = "a_bad_test_lems_file.lems"
+            with open(test_lems_file3, "w") as f:
+                print("<LAMS> </LAMS>", file=f)
+
+            confirm_file_type(test_lems_file3, ["xml"], "lems")
+
+        os.unlink(test_lems_file)
+        os.unlink(test_lems_file2)
+        os.unlink(test_lems_file3)