// Copyright 2024 Matthew Rich <matthewrich.conf@gmail.com>. All rights reserved.

package containerlog

import (
	"github.com/stretchr/testify/assert"
	"testing"
	"bytes"
	"io"
)

func TestStreamReader(t *testing.T) {
	
	var logs bytes.Buffer
	logs.Write(StreamStdout.Log("stdout log message"))
	logs.Write(StreamStderr.Log("stderr log message"))
	logs.Write(StreamStdout.Log("stdout log message - line 2"))
	logs.Write(StreamStderr.Log("stderr log message - line 2"))
	logs.Write(StreamStderr.Log("stderr log message - line 3"))

	sr := NewStreamReader(&logs)
	outpipe := sr.StdoutPipe()
	errpipe := sr.StderrPipe()

	var message []byte = make([]byte, 20)	
	n, ee := errpipe.Read(message)
	assert.Nil(t, ee)
	assert.Equal(t, 20, n)

	assert.Equal(t, "stderr log messagest", string(message))

	ov, oe := io.ReadAll(outpipe)
	assert.Nil(t, oe)
	assert.Equal(t, "stdout log messagestdout log message - line 2", string(ov))
}