TestLoggerWithFormatter() — gin Function Reference

Source Code

logger_test.go lines 150–180

func TestLoggerWithFormatter(t *testing.T) {
	buffer := new(strings.Builder)

	d := DefaultWriter
	DefaultWriter = buffer
	defer func() {
		DefaultWriter = d
	}()

	router := New()
	router.Use(LoggerWithFormatter(func(param LogFormatterParams) string {
		return fmt.Sprintf("[FORMATTER TEST] %v | %3d | %13v | %15s | %-7s %#v\n%s",
			param.TimeStamp.Format("2006/01/02 - 15:04:05"),
			param.StatusCode,
			param.Latency,
			param.ClientIP,
			param.Method,
			param.Path,
			param.ErrorMessage,
		)
	}))
	router.GET("/example", func(c *Context) {})
	PerformRequest(router, http.MethodGet, "/example?a=100")

	// output test
	assert.Contains(t, buffer.String(), "[FORMATTER TEST]")
	assert.Contains(t, buffer.String(), "200")
	assert.Contains(t, buffer.String(), http.MethodGet)
	assert.Contains(t, buffer.String(), "/example")
	assert.Contains(t, buffer.String(), "a=100")
}