package cmd

import (
	"bytes"
	"testing"
)

func TestCmd(t *testing.T) {
	buf := bytes.NewBuffer([]byte{})
	errBuf := bytes.NewBuffer([]byte{})

	cmd := NewCommandSample(buf, errBuf)
	cmd.SetOutput(buf)
	cmd.Run(cmd, []string{"hiyosi"})

	if len(errBuf.String()) != 0 {
		t.Errorf("Unexpected output: %v", errBuf.String())
	}
	if len(buf.String()) == 0 {
		t.Error("Unexpected empty output")
	}
}

func TestCmdWithNoArgs(t *testing.T) {
	buf := bytes.NewBuffer([]byte{})
	errBuf := bytes.NewBuffer([]byte{})

	cmd := NewCommandSample(buf, errBuf)
	cmd.SetOutput(buf)
	cmd.Run(cmd, []string{})

	if len(errBuf.String()) == 0 {
		t.Error("Unexpected empty output")
	}
}