clientIPWithReq := &lazyClientIP{req}
	assert.Equal(t, ip, fmt.Sprintf("%v", clientIPWithReq))

	clientIPWithoutReq := &lazyClientIP{}
	assert.Equal(t, "unknown", fmt.Sprintf("%v", clientIPWithoutReq))
}

func TestLazyAccept(t *testing.T) {
	req := &http.Request{}
	req.Header = http.Header{}

	accept := "application/json"
	req.Header.Set("Accept", accept)

	acceptWithReq := &lazyAccept{req}