add simple unit test

README.md

@@ -169,3 +169,7 @@ To test, first install this code locally, then run pytest:
 pip3 install .
 pytest
 ```
+Possible options for testing:
+* for more verbosity, add "-v" or even "-vv" like this: pytest -vv
+* to run just unit tests: pytest -munit
+* to run just integrstion tests: pytest -mint

meshtastic/test/test_node.py

@@ -0,0 +1,16 @@
+"""Meshtastic unit tests for node.py"""
+import re
+import subprocess
+import platform
+
+import pytest
+
+from meshtastic.node import pskToString
+
+@pytest.mark.unit
+def test_pskToString():
+    """Test pskToString"""
+    assert pskToString('') == 'unencrypted'
+    assert pskToString(bytes([0x00])) == 'unencrypted'
+    assert pskToString(bytes([0x01])) == 'default'
+    assert pskToString(bytes([0x02, 0x01])) == 'secret'

pytest.ini

@@ -1,4 +1,5 @@
 [pytest]
 
 markers =
-    int: marks tests as integration
+    unit: marks tests as unit tests
+    int: marks tests as integration tests