package logging import ( "fmt" "strings" "time" ) type LogCollector interface { fmt.Stringer Logger } type logCollector struct { logger builder *strings.Builder } func (lc *logCollector) String() string { return lc.builder.String() } func NewTestLogger() LogCollector { var builder strings.Builder return &logCollector{ logger: logger{ writer: &builder, prefix: func() string { return formatTime(time.Unix(1349085672, 0)) }, }, builder: &builder, } }