add examples; add Makefile

meshtastic/tests/test_examples.py

@@ -0,0 +1,24 @@
+"""Meshtastic test that the examples run as expected.
+   We assume you have a python virtual environment in current directory.
+   If not, you need to run: "python3 -m venv venv", "source venv/bin/activate", "pip install ."
+"""
+import subprocess
+
+import pytest
+
+@pytest.mark.examples
+def test_examples_hello_world_serial_no_arg():
+    """Test hello_world_serial without any args"""
+    return_value, _ = subprocess.getstatusoutput('source venv/bin/activate; python3 examples/hello_world_serial.py')
+    assert return_value == 3
+
+
+@pytest.mark.examples
+def test_examples_hello_world_serial_with_arg(capsys):
+    """Test hello_world_serial with arg"""
+    return_value, _ = subprocess.getstatusoutput('source venv/bin/activate; python3 examples/hello_world_serial.py hello')
+    assert return_value == 1
+    _, err = capsys.readouterr()
+    assert err == ''
+    # TODO: Why does this not work?
+    # assert out == 'Warning: No Meshtastic devices detected.'