test(config,git,logger): add some test functions

pkg/git/sign_key_test.go

@@ -0,0 +1,36 @@
+package git_test
+
+import (
+	"testing"
+
+	"git.ar21.de/yolokube/grafana-backuper/pkg/git"
+	"github.com/stretchr/testify/assert"
+)
+
+func TestReadKeyFile_Success(t *testing.T) {
+	signKey := &git.SignKey{KeyFile: "testdata/test-key.asc"}
+	err := signKey.ReadKeyFile()
+
+	assert.NoError(t, err)
+}
+
+func TestReadKeyFile_FileError(t *testing.T) {
+	signKey := &git.SignKey{KeyFile: "nonexistent-file.asc"}
+	err := signKey.ReadKeyFile()
+
+	assert.Error(t, err)
+}
+
+func TestReadKeyFile_DecodingError(t *testing.T) {
+	signKey := &git.SignKey{KeyFile: "testdata/test-invalid-key.asc"}
+	err := signKey.ReadKeyFile()
+
+	assert.Error(t, err)
+}
+
+func TestReadKeyFile_EmptyKeyRing(t *testing.T) {
+	signKey := &git.SignKey{KeyFile: "testdata/test-empty-key.asc"}
+	err := signKey.ReadKeyFile()
+
+	assert.Error(t, err)
+}