feat: allow custom exit function through dependency injection

Author: honzajavorek

src/apify/_actor.py

@@ -231,17 +231,19 @@ async def exit(
         event_listeners_timeout: timedelta | None = EVENT_LISTENERS_TIMEOUT,
         status_message: str | None = None,
         cleanup_timeout: timedelta = timedelta(seconds=30),
+        sys_exit: Callable = sys.exit,
     ) -> None:
         """Exit the Actor instance.
 
         This stops the Actor instance. It cancels all the intervals for regularly sending `PERSIST_STATE` events,
         sends a final `PERSIST_STATE` event, waits for all the event listeners to finish, and stops the event manager.
 
         Args:
-            exit_code: The exit code with which the Actor should fail (defaults to `0`).
+            exit_code: The exit code with which the program should end (defaults to `0`).
             event_listeners_timeout: How long should the Actor wait for Actor event listeners to finish before exiting.
             status_message: The final status message that the Actor should display.
             cleanup_timeout: How long we should wait for event listeners.
+            sys_exit: A function to use to terminate the program (defaults to `sys.exit`)
         """
         self._raise_if_not_initialized()
 
@@ -281,15 +283,17 @@ async def fail(
         exit_code: int = 1,
         exception: BaseException | None = None,
         status_message: str | None = None,
+        sys_exit: Callable = sys.exit,
     ) -> None:
         """Fail the Actor instance.
 
         This performs all the same steps as Actor.exit(), but it additionally sets the exit code to `1` (by default).
 
         Args:
-            exit_code: The exit code with which the Actor should fail (defaults to `1`).
+            exit_code: The exit code with which the program should fail (defaults to `1`).
             exception: The exception with which the Actor failed.
             status_message: The final status message that the Actor should display.
+            sys_exit: A function to use to terminate the program (defaults to `sys.exit`)
         """
         self._raise_if_not_initialized()
 
@@ -298,7 +302,7 @@ async def fail(
         if exception and not is_running_in_ipython():
             self.log.exception('Actor failed with an exception', exc_info=exception)
 
-        await self.exit(exit_code=exit_code, status_message=status_message)
+        await self.exit(exit_code=exit_code, status_message=status_message, sys_exit=sys_exit)
 
     def new_client(
         self,