directory: save IDP errors to databroker, put event handling in dedicated package (#2957)

internal/events/manager_test.go

@@ -0,0 +1,32 @@
+package events
+
+import (
+	"testing"
+	"time"
+
+	"github.com/google/go-cmp/cmp"
+	"github.com/stretchr/testify/assert"
+	"google.golang.org/protobuf/testing/protocmp"
+)
+
+func TestManager(t *testing.T) {
+	mgr := New()
+
+	received := make(chan Event, 1)
+	handle := mgr.Register(func(evt Event) {
+		received <- evt
+	})
+	assert.NotEmpty(t, handle)
+
+	expect := &IDPErrorEvent{Message: "TEST"}
+	mgr.Dispatch(expect)
+
+	assert.Eventually(t, func() bool {
+		select {
+		case evt := <-received:
+			return cmp.Equal(evt, expect, protocmp.Transform())
+		default:
+			return false
+		}
+	}, time.Second, time.Millisecond*20)
+}