blob: 05492e24ce3fbd0f84027b8b581d01e8c3b35b5a [file] [log] [blame]
// Copyright 2015 The Vanadium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package testutil
import (
// FormatLogLine will prepend the file and line number of the caller
// at the specificied depth (as per runtime.Caller) to the supplied
// format and args and return a formatted string. It is useful when
// implementing functions that factor out error handling and reporting
// in tests.
func FormatLogLine(depth int, format string, args ...interface{}) string {
_, file, line, _ := runtime.Caller(depth)
nargs := []interface{}{filepath.Base(file), line}
nargs = append(nargs, args...)
return fmt.Sprintf("%s:%d: "+format, nargs...)