package roaring

import (
	"math/rand"
	"testing"
)

func BenchmarkIntersectionLargeParallel(b *testing.B) {
	b.StopTimer()

	initsize := 650000
	r := rand.New(rand.NewSource(0))

	s1 := NewBitmap()
	sz := 150 * 1000 * 1000
	for i := 0; i < initsize; i++ {
		s1.Add(uint32(r.Int31n(int32(sz))))
	}

	s2 := NewBitmap()
	sz = 100 * 1000 * 1000
	for i := 0; i < initsize; i++ {
		s2.Add(uint32(r.Int31n(int32(sz))))
	}

	b.StartTimer()
	card := uint64(0)
	for j := 0; j < b.N; j++ {
		s3 := ParAnd(0, s1, s2)
		card = card + s3.GetCardinality()
	}
}

func BenchmarkIntersectionLargeRoaring(b *testing.B) {
	b.StopTimer()
	initsize := 650000
	r := rand.New(rand.NewSource(0))

	s1 := NewBitmap()
	sz := 150 * 1000 * 1000
	for i := 0; i < initsize; i++ {
		s1.Add(uint32(r.Int31n(int32(sz))))
	}

	s2 := NewBitmap()
	sz = 100 * 1000 * 1000
	for i := 0; i < initsize; i++ {
		s2.Add(uint32(r.Int31n(int32(sz))))
	}

	b.StartTimer()
	card := uint64(0)
	for j := 0; j < b.N; j++ {
		s3 := And(s1, s2)
		card = card + s3.GetCardinality()
	}
}