move the slow unit tests into own group

Makefile

@@ -1,6 +1,6 @@
-# unit test
+# only run the fast unit tests
 test:
-	pytest
+	pytest -m unit
 
 # local install
 install:

meshtastic/tests/test_stream_interface.py

@@ -17,7 +17,8 @@ def test_StreamInterface():
     assert pytest_wrapped_e.type == Exception
 
 
-@pytest.mark.unit
+# Note: This takes a bit, so moving from unit to slow
+@pytest.mark.unitslow
 def test_StreamInterface_with_noProto(caplog, reset_globals):
     """Test that we can instantiate a StreamInterface based on nonProto
        and we can read/write bytes from a mocked stream
@@ -33,7 +34,8 @@ def test_StreamInterface_with_noProto(caplog, reset_globals):
         assert data == test_data
 
 
-@pytest.mark.unit
+# Note: This takes a bit, so moving from unit to slow
+@pytest.mark.unitslow
 def test_sendToRadioImpl(caplog, reset_globals):
     """Test _sendToRadioImpl()"""
     test_data = b'hello'

pytest.ini

@@ -4,6 +4,7 @@ addopts = -m "not int and not smoke1 and not smoke2 and not smokewifi and not ex
 
 markers =
     unit: marks tests as unit tests
+    unitslow: marks slow unit tests
     int: marks tests as integration tests
     smoke1: runs smoke tests on a single device connected via USB
     smoke2: runs smoke tests on a two devices connected via USB