start to add unit tests for tunnel

.coveragerc

@@ -1,2 +1,6 @@
 [run]
 omit = meshtastic/*_pb2.py,meshtastic/tests/*.py,meshtastic/test.py
+
+[report]
+exclude_lines =
+    if __name__ == .__main__.:

meshtastic/tests/test_int.py

@@ -6,13 +6,21 @@ import pytest
 
 
 @pytest.mark.int
-def test_int_no_args():
-    """Test without any args"""
+def test_int_meshtastic_no_args():
+    """Test meshtastic without any args"""
     return_value, out = subprocess.getstatusoutput('meshtastic')
     assert re.match(r'usage: meshtastic', out)
     assert return_value == 1
 
 
+@pytest.mark.int
+def test_int_mesh_tunnel_no_args():
+    """Test mesh-tunnel without any args"""
+    return_value, out = subprocess.getstatusoutput('mesh-tunnel')
+    assert re.match(r'usage: mesh-tunnel', out)
+    assert return_value == 1
+
+
 @pytest.mark.int
 def test_int_version():
     """Test '--version'."""

meshtastic/tests/test_main.py

@@ -9,7 +9,7 @@ import logging
 from unittest.mock import patch, MagicMock
 import pytest
 
-from meshtastic.__main__ import initParser, main, Globals, onReceive, onConnection, export_config, getPref, setPref, onNode
+from meshtastic.__main__ import initParser, main, Globals, onReceive, onConnection, export_config, getPref, setPref, onNode, tunnelMain
 #from ..radioconfig_pb2 import UserPreferences
 import meshtastic.radioconfig_pb2
 from ..serial_interface import SerialInterface
@@ -1679,3 +1679,16 @@ def test_onNode(capsys, reset_globals):
     out, err = capsys.readouterr()
     assert re.search(r'Node changed', out, re.MULTILINE)
     assert err == ''
+
+
+@pytest.mark.unit
+def test_tunnel_no_args(capsys, reset_globals):
+    """Test tunnel no arguments"""
+    sys.argv = ['']
+    Globals.getInstance().set_args(sys.argv)
+    with pytest.raises(SystemExit) as pytest_wrapped_e:
+        tunnelMain()
+    assert pytest_wrapped_e.type == SystemExit
+    assert pytest_wrapped_e.value.code == 1
+    _, err = capsys.readouterr()
+    assert re.search(r'usage: ', err, re.MULTILINE)