diff --git a/noxfile.py b/noxfile.py
index bd1e55f..11ac9c5 100644
--- a/noxfile.py
+++ b/noxfile.py
@@ -1,11 +1,12 @@
 import nox
 
+@nox.session
+def lint(session):
+    session.install('ruff')
+    session.run('ruff', 'check', '--exclude', 'examples')
+
 @nox.session
 def tests(session):
     session.install('pytest')
     session.run('pytest')
 
-def lint(session):
-    session.install('flake8')
-    session.run('flake8', '--import-order-style', 'google')
-
diff --git a/tests/test_datatype.py b/tests/test_datatype.py
new file mode 100644
index 0000000..83e2cb0
--- /dev/null
+++ b/tests/test_datatype.py
@@ -0,0 +1,14 @@
+#!/usr/bin/env python3
+import unittest
+
+import pyFroniusReg.froniusreg as froniusreg
+
+class TestDataTypes(unittest.testCase):
+
+    def test_int16(self):
+        assert froniusreg.int16.decode(froniusreg.int16.encode(65536)) == 65535
+
+
+if __name__ == '__main__':
+    unittest.main()
+