package buf2d

import (
	"fmt"
	"strings"
	"testing"
)

func TestSub(t *testing.T) {
	b := NewBuffer(10, 10, ' ')
	s := b.Sub(1, 1, b.Width()-1, b.Height()-1)
	b.Set(5, 1, 'a')
	s.Set(5, 5, 'b')
	WriteString(b, "Hello world", 1, 2)

	fmt.Println(b)
	fmt.Println(strings.Repeat("-", 10))
	fmt.Println(s)
}

func TestSet(t *testing.T) {
	b := NewBuffer(0, 0, ' ')
	b.Set(0, 0, 'a')
}

func TestOffset(t *testing.T) {
	b := NewBuffer(10, 10, ' ')
	b = b.Sub(3, 3, 3, 3)
	fmt.Println(b.OffsetX(), b.OffsetY())
}