added unittest for all subscription

fsrc-core/src/event_man.rs

@@ -18,7 +18,12 @@
 //!     manager.
 //!  4. Each event receiver and/or subscriber gets a receiver component. The sender component is
 //!     used with the [SendEventProvider] trait and the subscription API provided by the
-//!     [EventManager] to subscribe for individual events or whole group of events.
+//!     [EventManager] to subscribe for individual events, whole group of events or all events
+//!
+//! Some components like a PUS Event Service or PUS Event Action Service might require all
+//! events to package them as telemetry or start actions where applicable.
+//! Other components might only be interested in certain events. For example, a thermal system
+//! handler might only be interested in temperature events generated by a thermal sensor component.
 use crate::events::{GenericEvent, LargestEventRaw, LargestGroupIdRaw};
 use alloc::boxed::Box;
 use alloc::vec;
@@ -402,4 +407,36 @@ mod tests {
         assert!(res.is_ok());
         check_handled_event(res.unwrap(), event_1, 1);
     }
+
+    #[test]
+    fn test_all_events_listener() {
+        let (event_sender, manager_queue) = channel();
+        let event_man_receiver = MpscEventReceiver {
+            mpsc_receiver: manager_queue,
+        };
+        let mut event_man: EventManager<SendError<EventAndParams>, EventU32> =
+            EventManager::new(Box::new(event_man_receiver), 128);
+        let event_0 = EventU32::new(Severity::INFO, 0, 5).unwrap();
+        let event_1 = EventU32::new(Severity::HIGH, 1, 0).unwrap();
+        let (event_0_tx_0, all_events_rx) = channel();
+        let all_events_listener = MpscEventSenderQueue {
+            id: 0,
+            mpsc_sender: event_0_tx_0,
+        };
+        event_man.subscribe_all(all_events_listener);
+        event_sender
+            .send((event_0, None))
+            .expect("Triggering event 0 failed");
+        event_sender
+            .send((event_1, None))
+            .expect("Triggering event 1 failed");
+        let res = event_man.try_event_handling();
+        assert!(res.is_ok());
+        check_handled_event(res.unwrap(), event_0, 1);
+        let res = event_man.try_event_handling();
+        assert!(res.is_ok());
+        check_handled_event(res.unwrap(), event_1, 1);
+        check_next_event(event_0, &all_events_rx);
+        check_next_event(event_1, &all_events_rx);
+    }
 }