package pkg

import (
	"os/exec"
	"strings"
	"testing"
)

func TestUnknownDistribution(t *testing.T) {

	_, err := Load("invalid-distro-xxx")
	if err != ErrUnknownDistribution {
		t.Errorf("expected <%s>, got <%s>", ErrUnknownDistribution, err)
		t.Fail()
	}

}
func TestNoCandidateInstalled(t *testing.T) {

	// get host distro
	out, err := exec.Command("lsb_release", "-is").Output()
	if err != nil {
		t.Errorf("cannot get host linux distribution")
		t.Fail()
	}
	hostDistro := strings.ToLower(strings.Trim(string(out), " \n\t"))

	// valid candidate
	_, err = Load(hostDistro)
	if err != nil {
		t.Errorf("expected <nil>, got <%s>", err)
		t.Fail()
	}

	// invalid candidate
	distro := "solus"
	if hostDistro == distro {
		distro = "ubuntu"
	}

	_, err = Load(distro)
	if err != ErrNoCandidateInstalled {
		t.Errorf("expected <%s>, got <%s>", ErrNoCandidateInstalled, err)
		t.Fail()
	}

}