// Copyright (C) 2019 ston1th

package encoder

import (
	"bytes"
	"io/ioutil"
	"testing"
)

func TestComment(t *testing.T) {
	var (
		in = bytes.NewBufferString(`
REM Hello World
`)
		out = new(bytes.Buffer)
	)
	err := NewEncoder(out, "de").Encode(in)
	if err != nil {
		t.Error(err)
	}
	if !bytes.Equal(out.Bytes(), nil) {
		t.Error("bytes not equal")
	}
}

func TestString(t *testing.T) {
	var (
		in = bytes.NewBufferString(`
STRING Hello World
`)
		out  = new(bytes.Buffer)
		want = []byte{0xb, 0x2, 0x8, 0x0, 0xf, 0x0, 0xf, 0x0,
			0x12, 0x0, 0x2c, 0x0, 0x1a, 0x2, 0x12, 0x0,
			0x15, 0x0, 0xf, 0x0, 0x7, 0x0}
	)
	err := NewEncoder(out, "de").Encode(in)
	if err != nil {
		t.Error(err)
	}
	if !bytes.Equal(out.Bytes(), want) {
		t.Error("bytes not equal")
	}
}

func TestExample(t *testing.T) {
	var (
		in = bytes.NewBufferString(`
REM Type Hello World into Windows notepad. Target: Windows 95 and beyond. Author: Darren
DELAY 1000
GUI r
DELAY 100
STRING c:\windows\notepad.exe
ENTER
DELAY 1000
STRING Hello World
`)
		out  = new(bytes.Buffer)
		want = []byte{0x0, 0xff, 0x0, 0xff, 0x0, 0xff, 0x0, 0xeb,
			0x15, 0x8, 0x0, 0x64, 0x6, 0x0, 0x37, 0x2,
			0x2d, 0x40, 0x1a, 0x0, 0xc, 0x0, 0x11, 0x0,
			0x7, 0x0, 0x12, 0x0, 0x1a, 0x0, 0x16, 0x0,
			0x2d, 0x40, 0x11, 0x0, 0x12, 0x0, 0x17, 0x0,
			0x8, 0x0, 0x13, 0x0, 0x4, 0x0, 0x7, 0x0,
			0x37, 0x0, 0x8, 0x0, 0x1b, 0x0, 0x8, 0x0,
			0x28, 0x0, 0x0, 0xff, 0x0, 0xff, 0x0, 0xff,
			0x0, 0xeb, 0xb, 0x2, 0x8, 0x0, 0xf, 0x0,
			0xf, 0x0, 0x12, 0x0, 0x2c, 0x0, 0x1a, 0x2,
			0x12, 0x0, 0x15, 0x0, 0xf, 0x0, 0x7, 0x0}
	)
	err := NewEncoder(out, "de").Encode(in)
	if err != nil {
		t.Error(err)
	}
	if !bytes.Equal(out.Bytes(), want) {
		t.Error("bytes not equal")
	}
}

func BenchmarkExample(b *testing.B) {
	var in = bytes.NewBufferString(`
REM Type Hello World into Windows notepad. Target: Windows 95 and beyond. Author: Darren
DELAY 1000
GUI r
DELAY 100
STRING c:\windows\notepad.exe
ENTER
DELAY 1000
STRING Hello World
`)
	e := NewEncoder(ioutil.Discard, "de")
	b.ReportAllocs()
	for i := 0; i < b.N; i++ {
		e.Encode(in)
	}
}