diff --git a/assert_tests.py b/assert_tests.py
new file mode 100644
index 0000000000000000000000000000000000000000..3f0e61000f26d7a36dbf0517bd3fa7e7bed8bc12
--- /dev/null
+++ b/assert_tests.py
@@ -0,0 +1,9 @@
+import morse
+
+def test_encode_us():
+    assert morse.encode('US') == '..- ...', "Should be ..- ..."
+
+
+if __name__ == "__main__":
+    test_encode_us(s)
+    print('Everything passed')