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package nixfig

import (
	"os"
	"testing"

	"github.com/alecthomas/assert/v2"
)

type Config struct {
	User string
	Log  struct {
		Level string
		File  string
	}
	HTTP struct {
		Host   string
		Port   int
		Admins []string
	}
}

var testCfg = Config{
	User: "jolheiser",
	Log: struct {
		Level string
		File  string
	}{
		Level: "warn",
		File:  "jolheiser.log",
	},
	HTTP: struct {
		Host   string
		Port   int
		Admins []string
	}{
		Host:   "0.0.0.0",
		Port:   1234,
		Admins: []string{"jolheiser", "admin"},
	},
}

func TestNixNotFound(t *testing.T) {
	oldNix := Nix
	Nix = ""

	_, err := Marshal(nil)
	assert.IsError(t, err, ErrNixNotFound)

	Nix = oldNix
}

func TestUnmarshal(t *testing.T) {
	data, err := os.ReadFile("testdata/config.nix")
	assert.NoError(t, err)

	var cfg Config
	err = Unmarshal(data, &cfg)
	assert.NoError(t, err)
	assert.Equal(t, testCfg, cfg)
}

func TestMarshal(t *testing.T) {
	data, err := Marshal(testCfg)
	assert.NoError(t, err)

	var cfg Config
	err = Unmarshal(data, &cfg)
	assert.NoError(t, err)
	assert.Equal(t, testCfg, cfg)
}