try to adress #4119

Author: mstoykov

js/modules/k6/browser/tests/test_browser.go

@@ -13,6 +13,7 @@ import (
 	"github.com/stretchr/testify/require"
 	"golang.org/x/sync/errgroup"
 
+	"go.k6.io/k6/event"
 	"go.k6.io/k6/js/modules/k6/browser/chromium"
 	"go.k6.io/k6/js/modules/k6/browser/common"
 	"go.k6.io/k6/js/modules/k6/browser/env"
@@ -89,6 +90,13 @@ func newTestBrowser(tb testing.TB, opts ...func(*testBrowser)) *testBrowser {
 	tbr.pid = pid
 	tbr.wsURL = b.WsURL()
 	tb.Cleanup(func() {
+		events, ok := tbr.vu.EventsField.Global.(*event.System)
+		require.True(tb, ok)
+		waitDone := events.Emit(&event.Event{
+			Type: event.Exit,
+		})
+
+		require.NoError(tb, waitDone(context.Background()), "error waiting on Exit done")
 		select {
 		case <-tbr.vu.Context().Done():
 		default: