tests: add not_board mark

This is negation of board mark. This should help us to limit tests not
only to explicit list of boards but also do exclusion list.

The immediate usage of this is in DNS resolver processes check.

pytest.ini

@@ -5,6 +5,7 @@ log_format = %(levelname)s[%(relativeCreated)d]%(name)s %(message)s
 log_cli_format = %(levelname)s %(name)s %(message)s
 markers =
 	deploy: quick tests to be run as part of deployment process
-	board(boards): mark test to run only on specified board
+	board(boards): mark test to run only on specified boards
+	not_board(boards): mark test to not run on specified boards
 	lan1: requirement of lan1 ethernet connection to board
 	lan2: requirement of lan2 ethernet connection to board

tests/conftest.py

@@ -64,10 +64,15 @@ def pytest_sessionstart(session):
 
 
 def pytest_runtest_setup(item):
-    board = item.config.target_config.board
-    for boards in item.iter_markers(name="board"):
-        if board not in boards.args:
+    def check_board(boards, expected):
+        board = item.config.target_config.board
+        if (board in boards.args) is expected:
             pytest.skip(f"test is not compatible with target: {board}")
+
+    for boards in item.iter_markers(name="board"):
+        check_board(boards, False)
+    for boards in item.iter_markers(name="not_board"):
+        check_board(boards, True)
     for conn in ("lan1", "lan2"):
         if item.get_closest_marker(conn) is not None and not item.config.target_config.is_configured(conn):
             pytest.skip(f"test requires connection: {conn}")

tests/test_bootup.py

@@ -14,7 +14,8 @@ def test_syslog_ng(client_board):
 @pytest.mark.parametrize("process", [
     "crond",
     "dnsmasq",
-    "kresd",
+    pytest.param("kresd", marks=pytest.mark.not_board("turris1x")),
+    pytest.param("unbound", marks=pytest.mark.board("turris1x")),
     "lighttpd",
     "mosquitto",
     "netifd",