Add sync test

pkg/cluster/cluster.go

@@ -905,7 +905,7 @@ func (c *Cluster) initSystemUsers() {
 
 	// Connection pooler user is an exception, if requested it's going to be
 	// created by operator as a normal pgUser
-	if c.needMasterConnectionPooler() || c.needReplicaConnectionPooler() {
+	if c.needConnectionPooler() {
 		// initialize empty connection pooler if not done yet
 		if c.Spec.ConnectionPooler == nil {
 			c.Spec.ConnectionPooler = &acidv1.ConnectionPooler{}

pkg/cluster/sync_test.go

@@ -215,6 +215,23 @@ func TestConnectionPoolerSynchronization(t *testing.T) {
 			defaultInstances: 1,
 			check:            objectsAreSaved,
 		},
+		{
+			subTest: "create both master and replica",
+			oldSpec: &acidv1.Postgresql{
+				Spec: acidv1.PostgresSpec{},
+			},
+			newSpec: &acidv1.Postgresql{
+				Spec: acidv1.PostgresSpec{
+					ConnectionPooler:              &acidv1.ConnectionPooler{},
+					EnableReplicaConnectionPooler: boolToPointer(true),
+					EnableConnectionPooler:        boolToPointer(true),
+				},
+			},
+			cluster:          clusterMissingObjects,
+			defaultImage:     "pooler:1.0",
+			defaultInstances: 1,
+			check:            objectsAreSaved,
+		},
 		{
 			subTest: "delete if not needed",
 			oldSpec: &acidv1.Postgresql{
@@ -235,6 +252,7 @@ func TestConnectionPoolerSynchronization(t *testing.T) {
 			oldSpec: &acidv1.Postgresql{
 				Spec: acidv1.PostgresSpec{
 					ConnectionPooler:       &acidv1.ConnectionPooler{},
+					EnableConnectionPooler: boolToPointer(true),
 				},
 			},
 			newSpec: &acidv1.Postgresql{