added somewhat proper test

package mb

import "testing"

import (

	"fmt"

	"io"

	"testing"

)

func TestSkip(t *testing.T) {

	t.Skip("not implemented")

	var mb MutexBuffer

	ri := io.Reader(&mb)

	wi := io.Writer(&mb)

	msg := "Hello, World!"

	if _, err := fmt.Fprintf(wi, "%q", msg); err != nil {

		t.Errorf("fmt.Fprintln() failed with: %s", err)

	}

	var res string

	if _, err := fmt.Fscanf(ri, "%q", &res); err != nil {

		t.Errorf("fmt.Fscanf() failed with: %s", err)

	}

	if res != msg {

		t.Errorf("res is %q, expected %q", res, msg)

	}

}