package logging

import (
	"bytes"
	"encoding/json"
	"testing"
)

func TestWithValues(t *testing.T) {
	buf := bytes.NewBuffer(make([]byte, 0))
	log := NewLogger(To(buf))
	log = log.WithValues(OperationKey, Operation{ID: "test_id_nested"})
	log.Info("hello")
	out := &LogEntry{}
	err := json.Unmarshal(buf.Bytes(), out)
	if err != nil {
		t.Fatal(err)
	}
	if out.Message != "hello" {
		t.Errorf("got '%s', expected 'hello'", out.Message)
	}
	if out.Operation.ID != "test_id_nested" {
		t.Errorf("got '%s', expected 'test_id_nested'", out.Operation.ID)
	}
}