package fit

import (
	"sort"
	"testing"
)

func TestBinAdd(t *testing.T) {
	b := newBin(10)
	x := testItem(3)
	y := testItem(4)
	b.add(&x)
	b.add(&y)

	if len(b.items) != 2 {
		t.Fail()
	}

	if b.items[0].Size() != 3 || b.items[1].Size() != 4 {
		t.Fail()
	}
}

func TestBinFits(t *testing.T) {
	b := newBin(10)
	x := testItem(3)
	y := testItem(8)
	z := testItem(6)
	b.add(&x)
	if b.fits(&y) {
		t.Fail()
	}

	if !b.fits(&z) {
		t.Fail()
	}
}

func TestBinItems(t *testing.T) {
	b := newBin(10)
	x := testItem(3)
	y := testItem(4)
	b.add(&x)
	b.add(&y)
	if b.Items()[0].Size() != 3 || b.Items()[1].Size() != 4 {
		t.Fail()
	}
}

func TestBinsBySize(t *testing.T) {
	bins := []Bin{Bin{capacity: 3, size: 3}, Bin{capacity: 2, size: 2}, Bin{capacity: 1, size: 1}}
	sort.Sort(BinsBySize(bins))

	if bins[0].capacity != 1 || bins[1].capacity != 2 || bins[2].capacity != 3 {
		t.Fail()
	}
}