1 files changed, 64 insertions, 0 deletions
diff --git a/internal/eventloop_polling_test.go b/internal/eventloop_polling_test.go
index 9d807d5..5158b53 100644
--- a/internal/eventloop_polling_test.go
+++ b/internal/eventloop_polling_test.go
@@ -80,4 +80,68 @@ func TestInitRawHandlersRegistersPollingEvents(t *testing.T) {
 	if _, ok := el.rawHandlers[types.ENTER_EPOLL_CTL_EVENT]; !ok {
 		t.Fatal("ENTER_EPOLL_CTL_EVENT handler is not registered")
 	}
+	if _, ok := el.rawHandlers[types.ENTER_POLL_EVENT]; !ok {
+		t.Fatal("ENTER_POLL_EVENT handler is not registered")
+	}
+}
+
+func TestHandlePollExitCarriesCommAndAppliesFilter(t *testing.T) {
+	t.Run("accepted", func(t *testing.T) {
+		el := mustNewEventLoop(t, eventLoopConfig{})
+		enter := &types.PollEvent{
+			EventType: types.ENTER_POLL_EVENT,
+			TraceId:   types.SYS_ENTER_POLL,
+			Time:      300,
+			Pid:       120,
+			Tid:       121,
+			Nfds:      2,
+			TimeoutNs: 5_000_000,
+		}
+		exit := &types.RetEvent{
+			EventType: types.EXIT_RET_EVENT,
+			TraceId:   types.SYS_EXIT_POLL,
+			Time:      320,
+			Ret:       1,
+			Pid:       120,
+			Tid:       121,
+		}
+		ep := &event.Pair{EnterEv: enter, ExitEv: exit}
+
+		if ok := el.handlePollExit(ep, enter); !ok {
+			t.Fatal("handlePollExit returned false")
+		}
+		if ep.Comm != "" {
+			t.Fatalf("expected empty comm for unresolved tid, got %q", ep.Comm)
+		}
+	})
+
+	t.Run("filtered", func(t *testing.T) {
+		el := mustNewEventLoop(t, eventLoopConfig{
+			filter: globalfilter.Filter{
+				Syscall: &globalfilter.StringFilter{Pattern: "openat"},
+			},
+		})
+		enter := &types.PollEvent{
+			EventType: types.ENTER_POLL_EVENT,
+			TraceId:   types.SYS_ENTER_POLL,
+			Time:      300,
+			Pid:       120,
+			Tid:       121,
+			Nfds:      2,
+			TimeoutNs: 5_000_000,
+		}
+		exit := &types.RetEvent{
+			EventType: types.EXIT_RET_EVENT,
+			TraceId:   types.SYS_EXIT_POLL,
+			Time:      320,
+			Ret:       1,
+			Pid:       120,
+			Tid:       121,
+		}
+		ep := &event.Pair{EnterEv: enter, ExitEv: exit}
+
+		if ok := el.handlePollExit(ep, enter); ok {
+			t.Fatal("handlePollExit should reject pair due to filter mismatch")
+		}
+	})
 }