kms: Add basic GetSecret() test

Add rudimentary test to ensure that we can get a valid passphrase from
the GetSecret() feature

Signed-off-by: Marcel Lauhoff <marcel.lauhoff@suse.com>

internal/util/getsecret_test.go

@@ -0,0 +1,52 @@
+/*
+Copyright 2022 The Ceph-CSI Authors.
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+    http://www.apache.org/licenses/LICENSE-2.0
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package util
+
+import (
+	"errors"
+	"testing"
+
+	kmsapi "github.com/ceph/ceph-csi/internal/kms"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestGetPassphraseFromKMS(t *testing.T) {
+	t.Parallel()
+
+	for _, provider := range kmsapi.GetKMSTestProvider() {
+		if provider.CreateTestDummy == nil {
+			continue
+		}
+		kms := kmsapi.GetKMSTestDummy(provider.UniqueID)
+		assert.NotNil(t, kms)
+
+		volEnc, err := NewVolumeEncryption(provider.UniqueID, kms)
+		if errors.Is(err, ErrDEKStoreNeeded) {
+			_, err = volEnc.KMS.GetSecret("")
+			if errors.Is(err, kmsapi.ErrGetSecretUnsupported) {
+				continue // currently unsupported by fscrypt integration
+			}
+		}
+		assert.NotNil(t, volEnc)
+
+		if kms.RequiresDEKStore() == kmsapi.DEKStoreIntegrated {
+			continue
+		}
+
+		secret, err := kms.GetSecret("")
+		assert.NoError(t, err, provider.UniqueID)
+		assert.NotEmpty(t, secret, provider.UniqueID)
+	}
+}