testhelper.go

// LogNow logs the information right away.
// This is particularly useful for debugging information in case of a
// panic, or because (*testing.T) Log() output is buffered and rolled
// up with its parent test output.
func LogNow(t *testing.T, format string, args ...interface{}) {
	_, file, line, ok := runtime.Caller(1)
	if ok {
		if file != "" {
			// Truncate file name
			if index := strings.LastIndex(file, "/"); index >= 0 {
				file = file[index+1:]
			}
		}
	} else {
		file = "?"
		line = 0
	}
	m := fmt.Sprintf(format, args...)
	fmt.Fprintf(os.Stdout, ">>>       %s [%s:%d] %s", t.Name(), file, line, m)
}