test(coderd): enable dbrollup service for insights tests (#12673)

coderd/database/dbrollup/dbrollup.go

@@ -21,7 +21,8 @@ const (
 )
 
 type Event struct {
-	TemplateUsageStats bool
+	Init               bool `json:"-"`
+	TemplateUsageStats bool `json:"template_usage_stats"`
 }
 
 type Rolluper struct {
@@ -138,6 +139,15 @@ func (r *Rolluper) start(ctx context.Context) {
 		}
 	}
 
+	// For testing.
+	if r.event != nil {
+		select {
+		case <-ctx.Done():
+			return
+		case r.event <- Event{Init: true}:
+		}
+	}
+
 	// Perform do immediately and on every tick of the ticker,
 	// disregarding the execution time of do. This ensure that
 	// the rollup is performed every interval assuming do does

coderd/database/dbrollup/dbrollup_test.go

@@ -110,6 +110,8 @@ func TestRollup_TwoInstancesUseLocking(t *testing.T) {
 	)
 	defer closeRolluper(rolluper2, resume2)
 
+	_, _ = <-events1, <-events2 // Deplete init event, resume operation.
+
 	ctx := testutil.Context(t, testutil.WaitMedium)
 
 	// One of the rollup instances should roll up and the other should not.
@@ -222,6 +224,8 @@ func TestRollupTemplateUsageStats(t *testing.T) {
 	rolluper := dbrollup.New(logger, db, dbrollup.WithInterval(250*time.Millisecond), dbrollup.WithEventChannel(events))
 	defer rolluper.Close()
 
+	<-events // Deplete init event, resume operation.
+
 	ctx := testutil.Context(t, testutil.WaitMedium)
 
 	select {