init error arrays correctly

pkg/cluster/resources.go

@@ -496,17 +496,16 @@ func (c *Cluster) deleteEndpoint(role PostgresRole) error {
 
 func (c *Cluster) deleteSecrets() error {
 	c.setProcessName("deleting secrets")
-	var errors []string
-	errorCount := 0
+	errors := make([]string, 0)
+
 	for uid, secret := range c.Secrets {
 		err := c.deleteSecret(uid, *secret)
 		if err != nil {
 			errors = append(errors, fmt.Sprintf("%v", err))
-			errorCount++
 		}
 	}
 
-	if errorCount > 0 {
+	if len(errors) > 0 {
 		return fmt.Errorf("could not delete all secrets: %v", errors)
 	}
 

pkg/cluster/sync_test.go

@@ -196,17 +196,15 @@ func TestCheckAndSetGlobalPostgreSQLConfiguration(t *testing.T) {
 	cluster.patroni = p
 	mockPod := newMockPod("192.168.100.1")
 
-	// simulate existing config that differs with cluster.Spec
+	// simulate existing config that differs from cluster.Spec
 	tests := []struct {
 		subtest       string
-		pod           *v1.Pod
 		patroni       acidv1.Patroni
 		pgParams      map[string]string
 		restartMaster bool
 	}{
 		{
 			subtest: "Patroni and Postgresql.Parameters differ - restart replica first",
-			pod:     mockPod,
 			patroni: acidv1.Patroni{
 				TTL: 30, // desired 20
 			},
@@ -218,7 +216,6 @@ func TestCheckAndSetGlobalPostgreSQLConfiguration(t *testing.T) {
 		},
 		{
 			subtest: "multiple Postgresql.Parameters differ - restart replica first",
-			pod:     mockPod,
 			patroni: acidv1.Patroni{
 				TTL: 20,
 			},
@@ -230,7 +227,6 @@ func TestCheckAndSetGlobalPostgreSQLConfiguration(t *testing.T) {
 		},
 		{
 			subtest: "desired max_connections bigger - restart replica first",
-			pod:     mockPod,
 			patroni: acidv1.Patroni{
 				TTL: 20,
 			},
@@ -242,7 +238,6 @@ func TestCheckAndSetGlobalPostgreSQLConfiguration(t *testing.T) {
 		},
 		{
 			subtest: "desired max_connections smaller - restart master first",
-			pod:     mockPod,
 			patroni: acidv1.Patroni{
 				TTL: 20,
 			},
@@ -255,7 +250,7 @@ func TestCheckAndSetGlobalPostgreSQLConfiguration(t *testing.T) {
 	}
 
 	for _, tt := range tests {
-		requireMasterRestart, err := cluster.checkAndSetGlobalPostgreSQLConfiguration(tt.pod, tt.patroni, tt.pgParams)
+		requireMasterRestart, err := cluster.checkAndSetGlobalPostgreSQLConfiguration(mockPod, tt.patroni, tt.pgParams)
 		assert.NoError(t, err)
 		if requireMasterRestart != tt.restartMaster {
 			t.Errorf("%s - %s: unexpect master restart strategy, got %v, expected %v", testName, tt.subtest, requireMasterRestart, tt.restartMaster)

pkg/cluster/volumes.go

@@ -88,7 +88,7 @@ func (c *Cluster) syncUnderlyingEBSVolume() error {
 	awsGp3 := aws.String("gp3")
 	awsIo2 := aws.String("io2")
 
-	errors := []string{}
+	errors := make([]string, 0)
 
 	for _, volume := range c.EBSVolumes {
 		var modifyIops *int64

pkg/controller/util.go

@@ -197,9 +197,8 @@ func (c *Controller) getInfrastructureRoles(
 	rolesSecrets []*config.InfrastructureRole) (
 	map[string]spec.PgUser, []error) {
 
-	var errors []error
-	var noRolesProvided = true
-
+	errors := make([]error, 0)
+	noRolesProvided := true
 	roles := []spec.PgUser{}
 	uniqRoles := map[string]spec.PgUser{}
 
@@ -230,9 +229,7 @@ func (c *Controller) getInfrastructureRoles(
 			continue
 		}
 
-		for _, r := range infraRoles {
-			roles = append(roles, r)
-		}
+		roles = append(roles, infraRoles...)
 	}
 
 	for _, r := range roles {

pkg/util/users/users.go

@@ -101,7 +101,7 @@ func (strategy DefaultUserSyncStrategy) ProduceSyncRequests(dbUsers spec.PgUserM
 // ExecuteSyncRequests makes actual database changes from the requests passed in its arguments.
 func (strategy DefaultUserSyncStrategy) ExecuteSyncRequests(requests []spec.PgSyncUserRequest, db *sql.DB) error {
 	var reqretries []spec.PgSyncUserRequest
-	var errors []string
+	errors := make([]string, 0)
 	for _, request := range requests {
 		switch request.Kind {
 		case spec.PGSyncUserAdd: