func MakeCliApp(
	diegoVersion string,
	latticeVersion string,
	ltcConfigRoot string,
	exitHandler exit_handler.ExitHandler,
	config *config.Config,
	logger lager.Logger,
	receptorClientCreator receptor_client.Creator,
	targetVerifier target_verifier.TargetVerifier,
	cliStdout io.Writer,
) *cli.App {
	config.Load()
	app := cli.NewApp()
	app.Name = AppName
	app.Author = latticeCliAuthor
	app.Version = defaultVersion(diegoVersion, latticeVersion)
	app.Usage = LtcUsage
	app.Email = "[email protected]"

	ui := terminal.NewUI(os.Stdin, cliStdout, password_reader.NewPasswordReader(exitHandler))
	app.Writer = ui

	app.Before = func(context *cli.Context) error {
		args := context.Args()
		command := app.Command(args.First())

		if command == nil {
			return nil
		}

		if _, ok := nonTargetVerifiedCommandNames[command.Name]; ok || len(args) == 0 {
			return nil
		}

		if receptorUp, authorized, err := targetVerifier.VerifyTarget(config.Receptor()); !receptorUp {
			ui.SayLine(fmt.Sprintf("Error connecting to the receptor. Make sure your lattice target is set, and that lattice is up and running.\n\tUnderlying error: %s", err.Error()))
			return err
		} else if !authorized {
			ui.SayLine("Could not authenticate with the receptor. Please run ltc target with the correct credentials.")
			return errors.New("Could not authenticate with the receptor.")
		}
		return nil
	}

	app.Action = defaultAction
	app.CommandNotFound = func(c *cli.Context, command string) {
		ui.SayLine(fmt.Sprintf(unknownCommand, command))
		exitHandler.Exit(1)
	}
	app.Commands = cliCommands(ltcConfigRoot, exitHandler, config, logger, receptorClientCreator, targetVerifier, ui)
	return app
}

import (
	"fmt"
	"os"
	"syscall"

	. "github.com/onsi/ginkgo"
	. "github.com/onsi/gomega"
	"github.com/onsi/gomega/gbytes"

	"github.com/cloudfoundry-incubator/lattice/ltc/exit_handler"
)

var _ = Describe("ExitHandler", func() {
	var (
		buffer      *gbytes.Buffer
		exitFunc    func(int)
		signalChan  chan os.Signal
		exitHandler exit_handler.ExitHandler
	)

	BeforeEach(func() {
		buffer = gbytes.NewBuffer()

		exitFunc = func(code int) {
			buffer.Write([]byte(fmt.Sprintf("Exit-Code=%d", code)))
		}

		signalChan = make(chan os.Signal)
		exitHandler = exit_handler.New(signalChan, exitFunc)
		go exitHandler.Run()

		exitHandler.OnExit(func() {