We build too many walls and not enough bridges

test/internal_error.go

@@ -0,0 +1,28 @@
+// Copyright (c) 2020 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+package tests
+
+import "fmt"
+
+func internalError(err error, msg string, args ...interface{}) error {
+	if err == nil {
+		return nil
+	}
+	msg = fmt.Sprintf(msg, args...)
+	return fmt.Errorf("internal error: %s: %v", msg, err)
+}