builder/googlecompute: client secrets tests

builder/googlecompute/client_secrets.go

@@ -22,9 +22,11 @@ func loadClientSecrets(path string) (*clientSecrets, error) {
 	if err != nil {
 		return nil, err
 	}
+
 	err = json.Unmarshal(secretBytes, &cs)
 	if err != nil {
 		return nil, err
 	}
+
 	return cs, nil
 }

builder/googlecompute/client_secrets_test.go

+package googlecompute
+
+import (
+	"io/ioutil"
+	"testing"
+)
+
+func testClientSecretsFile(t *testing.T) string {
+	tf, err := ioutil.TempFile("", "packer")
+	if err != nil {
+		t.Fatalf("err: %s", err)
+	}
+	defer tf.Close()
+
+	if _, err := tf.Write([]byte(testClientSecretsContent)); err != nil {
+		t.Fatalf("err: %s", err)
+	}
+
+	return tf.Name()
+}
+
+func TestLoadClientSecrets(t *testing.T) {
+	_, err := loadClientSecrets(testClientSecretsFile(t))
+	if err != nil {
+		t.Fatalf("err: %s", err)
+	}
+}
+
+// This is just some dummy data that doesn't actually work (it was revoked
+// a long time ago).
+const testClientSecretsContent = `{"web":{"auth_uri":"https://accounts.google.com/o/oauth2/auth","token_uri":"https://accounts.google.com/o/oauth2/token","client_email":"774313886706-eorlsj0r4eqkh5e7nvea5fuf59ifr873@developer.gserviceaccount.com","client_x509_cert_url":"https://www.googleapis.com/robot/v1/metadata/x509/774313886706-eorlsj0r4eqkh5e7nvea5fuf59ifr873@developer.gserviceaccount.com","client_id":"774313886706-eorlsj0r4eqkh5e7nvea5fuf59ifr873.apps.googleusercontent.com","auth_provider_x509_cert_url":"https://www.googleapis.com/oauth2/v1/certs"}}`