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https://github.com/featurebasedb/featurebase.git
synced 2026-09-07 00:55:55 +00:00
72 lines
2 KiB
Go
72 lines
2 KiB
Go
package index
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import (
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"testing"
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. "github.com/smartystreets/goconvey/convey"
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"time"
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)
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func TestBitmaps(t *testing.T) {
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Convey("function BitCount should equal method bm.Count()", t, func() {
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bm:= CreateRBBitmap()
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for i:=uint64(0); i<uint64(4096);i++{
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SetBit(bm,i)
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}
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bc1:= BitCount(bm)
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bc2:= bm.Count()
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So(bc1, ShouldEqual, bc2)
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})
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Convey("function AND_NOT 1 and not 0 => true ", t, func() {
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bm1:= CreateRBBitmap()
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bm2:= CreateRBBitmap()
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SetBit(bm1,1)
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//SetBit(bm2,2)
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all:= AND_NOT(bm1,bm2)
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res :=BitCount(all)
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So(1, ShouldEqual, res)
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})
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Convey("UNION even + odd equal 4096 ", t, func() {
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even:= CreateRBBitmap()
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for i:=uint64(0); i<uint64(4096);i+=2{
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SetBit(even,i)
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}
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odd:= CreateRBBitmap()
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for i:=uint64(1); i<uint64(4096);i+=2{
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SetBit(odd,i)
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}
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all:= Union(even,odd)
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total_bits:= BitCount(all)
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So(total_bits, ShouldEqual, 4096)
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})
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Convey("Intersection even - odd equal 0 ", t, func() {
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even:= CreateRBBitmap()
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for i:=uint64(0); i<uint64(4096);i+=2{
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SetBit(even,i)
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}
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odd:= CreateRBBitmap()
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for i:=uint64(1); i<uint64(4096);i+=2{
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SetBit(odd,i)
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}
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all:= Intersection(even,odd)
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total_bits:= BitCount(all)
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So(total_bits, ShouldEqual, 0)
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})
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Convey("Bitcount< 1s ", t, func() {
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all:= CreateRBBitmap()
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for i:=uint64(0); i< uint64(65536);i++{
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SetBit(all,i)
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}
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start:= time.Now()
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BitCount(all)
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So(start, ShouldHappenWithin, time.Duration(1) * time.Millisecond, time.Now())
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})
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}
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