Warning if SUT doesn't support parallel execution

libkirk/session.py

@@ -306,6 +306,11 @@ async def run(
         async with self._run_lock:
             await libkirk.events.fire("session_started", self._tmpdir.abspath)
 
+            if not self._sut.parallel_execution:
+                await libkirk.events.fire(
+                    "session_warning",
+                    "SUT doesn't support parallel execution")
+
             try:
                 await self._start_sut()
 

libkirk/ui.py

@@ -46,6 +46,7 @@ def __init__(self, no_colors: bool = False) -> None:
         libkirk.events.register("run_cmd_stop", self.run_cmd_stop)
         libkirk.events.register("suite_started", self.suite_started)
         libkirk.events.register("suite_completed", self.suite_completed)
+        libkirk.events.register("session_warning", self.session_warning)
         libkirk.events.register("session_error", self.session_error)
         libkirk.events.register("internal_error", self.internal_error)
 
@@ -158,6 +159,9 @@ async def suite_timeout(self, suite: Suite, timeout: float) -> None:
             f"Suite '{suite.name}' timed out after {timeout} seconds",
             color=self.RED)
 
+    async def session_warning(self, msg: str) -> None:
+        self._print(f"Warning: {msg}", color=self.YELLOW)
+
     async def session_error(self, error: str) -> None:
         self._print(f"Error: {error}", color=self.RED)