From 0cce565b651000639f6758444c12b3397e68c2cf Mon Sep 17 00:00:00 2001
From: Felix Kunde <felix-kunde@gmx.de>
Date: Fri, 29 Jan 2021 16:10:27 +0100
Subject: [PATCH] fix when adding only one capability (#1339)

* fix when adding only one capability

* fix error messages in unit test
---
 pkg/cluster/k8sres.go      |  2 +-
 pkg/cluster/k8sres_test.go | 10 +++++++++-
 2 files changed, 10 insertions(+), 2 deletions(-)

diff --git a/pkg/cluster/k8sres.go b/pkg/cluster/k8sres.go
index 56500bb29..b1a8adb0b 100644
--- a/pkg/cluster/k8sres.go
+++ b/pkg/cluster/k8sres.go
@@ -321,7 +321,7 @@ func getLocalAndBoostrapPostgreSQLParameters(parameters map[string]string) (loca
 }
 
 func generateCapabilities(capabilities []string) v1.Capabilities {
-	if len(capabilities) > 1 {
+	if len(capabilities) > 0 {
 		additionalCapabilities := []v1.Capability{}
 		for _, capability := range capabilities {
 			additionalCapabilities = append(additionalCapabilities, v1.Capability(strings.ToUpper(capability)))
diff --git a/pkg/cluster/k8sres_test.go b/pkg/cluster/k8sres_test.go
index 6034db214..efed071d7 100644
--- a/pkg/cluster/k8sres_test.go
+++ b/pkg/cluster/k8sres_test.go
@@ -1511,13 +1511,21 @@ func TestGenerateCapabilities(t *testing.T) {
 			capabilities: v1.Capabilities{},
 			err:          fmt.Errorf("could not parse empty capabilities configuration"),
 		},
+		{
+			subTest:    "configured capability",
+			configured: []string{"SYS_NICE"},
+			capabilities: v1.Capabilities{
+				Add: []v1.Capability{"SYS_NICE"},
+			},
+			err: fmt.Errorf("could not generate one configured capability"),
+		},
 		{
 			subTest:    "configured capabilities",
 			configured: []string{"SYS_NICE", "CHOWN"},
 			capabilities: v1.Capabilities{
 				Add: []v1.Capability{"SYS_NICE", "CHOWN"},
 			},
-			err: fmt.Errorf("could not parse empty capabilities configuration"),
+			err: fmt.Errorf("could not generate multiple configured capabilities"),
 		},
 	}
 	for _, tt := range tests {