package ribbons

import (

"testing"

. "github.com/smartystreets/goconvey/convey"

)

func TestBits(t *testing.T) {

Convey("Check bits", t, func() {

Convey("Check set", func() {

u := uint64(0)

u = setBit(u, 3)

So(u, ShouldEqual, 8)

u = setBit(u, 0)

So(u, ShouldEqual, 9)

})

Convey("Check del", func() {

u := uint64(8)

u = delBit(u, 3)

So(u, ShouldEqual, 0)

u = delBit(u, 3)

So(u, ShouldEqual, 0)

})

Convey("Check has", func() {

u := uint64(8)

So(hasBit(u, 3), ShouldBeTrue)

So(hasBit(u, 0), ShouldBeFalse)

})

Convey("Check extract", func() {

u := uint64(9)

bits := extractToggledBits(bucketSize, u, 0)

So(bits, ShouldResemble, []uint64{0, 3})

})

})

}