package assets

import (
	"bytes"
	"strings"
	"testing"
)

func env(string) string { return "" }

func TestRunNoArgsIsUsage(t *testing.T) {
	var out, errw bytes.Buffer
	if code := Run(nil, &out, &errw, env); code != exitUsage {
		t.Fatalf("no args exit = %d, want %d", code, exitUsage)
	}
	if !strings.Contains(errw.String(), "usage") {
		t.Fatalf("no args should print usage, got: %q", errw.String())
	}
}

func TestRunUnknownSubcommandIsUsage(t *testing.T) {
	var out, errw bytes.Buffer
	if code := Run([]string{"frobnicate"}, &out, &errw, env); code != exitUsage {
		t.Fatalf("unknown subcommand exit = %d, want %d", code, exitUsage)
	}
}