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runcontainer_test.go
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package roaring
import (
"fmt"
"math/rand"
"sort"
"strings"
"testing"
. "github.com/smartystreets/goconvey/convey"
)
// trial is used in the randomized testing of runContainers
type trial struct {
n int
percentFill float64
ntrial int
// only in the union test
// only subtract test
percentDelete float64
// only in 067 randomized operations
// we do this + 1 passes
numRandomOpsPass int
// allow sampling range control
// only recent tests respect this.
srang *interval16
}
func TestRleInterval16s(t *testing.T) {
Convey("canMerge, and mergeInterval16s should do what they say", t, func() {
a := newInterval16Range(0, 9)
b := newInterval16Range(0, 1)
report := sliceToString16([]interval16{a, b})
_ = report
c := newInterval16Range(2, 4)
d := newInterval16Range(2, 5)
e := newInterval16Range(0, 4)
f := newInterval16Range(9, 9)
g := newInterval16Range(8, 9)
h := newInterval16Range(5, 6)
i := newInterval16Range(6, 6)
aIb, empty := intersectInterval16s(a, b)
So(empty, ShouldBeFalse)
So(aIb, ShouldResemble, b)
So(canMerge16(b, c), ShouldBeTrue)
So(canMerge16(c, b), ShouldBeTrue)
So(canMerge16(a, h), ShouldBeTrue)
So(canMerge16(d, e), ShouldBeTrue)
So(canMerge16(f, g), ShouldBeTrue)
So(canMerge16(c, h), ShouldBeTrue)
So(canMerge16(b, h), ShouldBeFalse)
So(canMerge16(h, b), ShouldBeFalse)
So(canMerge16(c, i), ShouldBeFalse)
So(mergeInterval16s(b, c), ShouldResemble, e)
So(mergeInterval16s(c, b), ShouldResemble, e)
So(mergeInterval16s(h, i), ShouldResemble, h)
So(mergeInterval16s(i, h), ShouldResemble, h)
////// start
So(mergeInterval16s(newInterval16Range(0, 0), newInterval16Range(1, 1)), ShouldResemble, newInterval16Range(0, 1))
So(mergeInterval16s(newInterval16Range(1, 1), newInterval16Range(0, 0)), ShouldResemble, newInterval16Range(0, 1))
So(mergeInterval16s(newInterval16Range(0, 4), newInterval16Range(3, 5)), ShouldResemble, newInterval16Range(0, 5))
So(mergeInterval16s(newInterval16Range(0, 4), newInterval16Range(3, 4)), ShouldResemble, newInterval16Range(0, 4))
So(mergeInterval16s(newInterval16Range(0, 8), newInterval16Range(1, 7)), ShouldResemble, newInterval16Range(0, 8))
So(mergeInterval16s(newInterval16Range(1, 7), newInterval16Range(0, 8)), ShouldResemble, newInterval16Range(0, 8))
So(func() { _ = mergeInterval16s(newInterval16Range(0, 0), newInterval16Range(2, 3)) }, ShouldPanic)
})
}
func TestRunOffset(t *testing.T) {
v := newRunContainer16TakeOwnership([]interval16{newInterval16Range(34, 39)})
offtest := uint16(65500)
w := v.addOffset(offtest)
w0card := w[0].getCardinality()
w1card := w[1].getCardinality()
t.Logf("%d %d", w0card, w1card)
if w0card+w1card != 6 {
t.Errorf("Bogus cardinality.")
}
expected := []int{65534, 65535, 65536, 65537, 65538, 65539}
wout := make([]int, len(expected))
for i := 0; i < w0card; i++ {
wout[i] = w[0].selectInt(uint16(i))
}
for i := 0; i < w1card; i++ {
wout[i+w0card] = w[1].selectInt(uint16(i)) + 65536
}
t.Logf("%v %v", wout, expected)
for i, x := range wout {
if x != expected[i] {
t.Errorf("found discrepancy %d!=%d", x, expected[i])
}
}
}
func TestRleRunIterator16(t *testing.T) {
Convey("RunIterator16 unit tests for next, hasNext, and peekNext should pass", t, func() {
{
rc := newRunContainer16()
msg := rc.String()
_ = msg
So(rc.cardinality(), ShouldEqual, 0)
it := rc.newRunIterator16()
So(it.hasNext(), ShouldBeFalse)
So(func() { it.peekNext() }, ShouldPanic)
So(func() { it.next() }, ShouldPanic)
}
{
rc := newRunContainer16TakeOwnership([]interval16{newInterval16Range(4, 4)})
So(rc.cardinality(), ShouldEqual, 1)
it := rc.newRunIterator16()
So(it.hasNext(), ShouldBeTrue)
So(it.peekNext(), ShouldResemble, uint16(4))
So(it.next(), ShouldResemble, uint16(4))
}
{
rc := newRunContainer16CopyIv([]interval16{newInterval16Range(4, 9)})
So(rc.cardinality(), ShouldEqual, 6)
it := rc.newRunIterator16()
So(it.hasNext(), ShouldBeTrue)
for i := 4; i < 10; i++ {
So(it.next(), ShouldEqual, uint16(i))
}
So(it.hasNext(), ShouldBeFalse)
}
{
// basic nextMany test
rc := newRunContainer16CopyIv([]interval16{newInterval16Range(4, 9)})
So(rc.cardinality(), ShouldEqual, 6)
it := rc.newManyRunIterator16()
buf := make([]uint32, 10)
n := it.nextMany(0, buf)
So(n, ShouldEqual, 6)
expected := []uint32{4, 5, 6, 7, 8, 9, 0, 0, 0, 0}
for i, e := range expected {
So(buf[i], ShouldEqual, e)
}
}
{
// nextMany with len(buf) == 0
rc := newRunContainer16CopyIv([]interval16{newInterval16Range(4, 9)})
So(rc.cardinality(), ShouldEqual, 6)
it := rc.newManyRunIterator16()
var buf []uint32
n := it.nextMany(0, buf)
So(n, ShouldEqual, 0)
}
{
// basic nextMany test across ranges
rc := newRunContainer16CopyIv([]interval16{
newInterval16Range(4, 7),
newInterval16Range(11, 13),
newInterval16Range(18, 21)})
So(rc.cardinality(), ShouldEqual, 11)
it := rc.newManyRunIterator16()
buf := make([]uint32, 15)
n := it.nextMany(0, buf)
So(n, ShouldEqual, 11)
expected := []uint32{4, 5, 6, 7, 11, 12, 13, 18, 19, 20, 21, 0, 0, 0, 0}
for i, e := range expected {
So(buf[i], ShouldEqual, e)
}
}
{
// basic nextMany test across ranges with different buffer sizes
rc := newRunContainer16CopyIv([]interval16{
newInterval16Range(4, 7),
newInterval16Range(11, 13),
newInterval16Range(18, 21)})
expectedCard := 11
expectedVals := []uint32{4, 5, 6, 7, 11, 12, 13, 18, 19, 20, 21}
hs := uint32(1 << 16)
So(rc.cardinality(), ShouldEqual, expectedCard)
for bufSize := 2; bufSize < 15; bufSize++ {
buf := make([]uint32, bufSize)
seen := 0
it := rc.newManyRunIterator16()
for n := it.nextMany(hs, buf); n != 0; n = it.nextMany(hs, buf) {
// catch runaway iteration
So(seen+n, ShouldBeLessThanOrEqualTo, expectedCard)
for i, e := range expectedVals[seen : seen+n] {
So(buf[i], ShouldEqual, e+hs)
}
seen += n
// if we have more values to return then we shouldn't leave empty slots in the buffer
if seen < expectedCard {
So(n, ShouldEqual, bufSize)
}
}
So(seen, ShouldEqual, expectedCard)
}
}
{
// basic nextMany interaction with hasNext
rc := newRunContainer16CopyIv([]interval16{newInterval16Range(4, 4)})
So(rc.cardinality(), ShouldEqual, 1)
it := rc.newManyRunIterator16()
So(it.hasNext(), ShouldBeTrue)
buf := make([]uint32, 4)
n := it.nextMany(0, buf)
So(n, ShouldEqual, 1)
expected := []uint32{4, 0, 0, 0}
for i, e := range expected {
So(buf[i], ShouldEqual, e)
}
So(it.hasNext(), ShouldBeFalse)
buf = make([]uint32, 4)
n = it.nextMany(0, buf)
So(n, ShouldEqual, 0)
expected = []uint32{0, 0, 0, 0}
for i, e := range expected {
So(buf[i], ShouldEqual, e)
}
}
{
rc := newRunContainer16TakeOwnership([]interval16{
newInterval16Range(0, 0),
newInterval16Range(2, 2),
newInterval16Range(4, 4),
})
rc1 := newRunContainer16TakeOwnership([]interval16{
newInterval16Range(6, 7),
newInterval16Range(10, 11),
newInterval16Range(MaxUint16, MaxUint16),
})
rc = rc.union(rc1)
So(rc.cardinality(), ShouldEqual, 8)
it := rc.newRunIterator16()
So(it.next(), ShouldEqual, uint16(0))
So(it.next(), ShouldEqual, uint16(2))
So(it.next(), ShouldEqual, uint16(4))
So(it.next(), ShouldEqual, uint16(6))
So(it.next(), ShouldEqual, uint16(7))
So(it.next(), ShouldEqual, uint16(10))
So(it.next(), ShouldEqual, uint16(11))
So(it.next(), ShouldEqual, uint16(MaxUint16))
So(it.hasNext(), ShouldEqual, false)
newInterval16Range(0, MaxUint16)
rc2 := newRunContainer16TakeOwnership([]interval16{newInterval16Range(0, MaxUint16)})
rc2 = rc2.union(rc)
So(rc2.numIntervals(), ShouldEqual, 1)
}
})
}
func TestRleRunReverseIterator16(t *testing.T) {
Convey("RunReverseIterator16 unit tests for next, hasNext, and peekNext should pass", t, func() {
{
rc := newRunContainer16()
it := rc.newRunReverseIterator16()
So(it.hasNext(), ShouldBeFalse)
So(func() { it.next() }, ShouldPanic)
}
{
rc := newRunContainer16TakeOwnership([]interval16{newInterval16Range(0, 0)})
it := rc.newRunReverseIterator16()
So(it.hasNext(), ShouldBeTrue)
So(it.next(), ShouldResemble, uint16(0))
So(func() { it.next() }, ShouldPanic)
So(it.hasNext(), ShouldBeFalse)
So(func() { it.next() }, ShouldPanic)
}
{
rc := newRunContainer16TakeOwnership([]interval16{newInterval16Range(4, 4)})
it := rc.newRunReverseIterator16()
So(it.hasNext(), ShouldBeTrue)
So(it.next(), ShouldResemble, uint16(4))
So(it.hasNext(), ShouldBeFalse)
}
{
rc := newRunContainer16TakeOwnership([]interval16{newInterval16Range(MaxUint16, MaxUint16)})
it := rc.newRunReverseIterator16()
So(it.hasNext(), ShouldBeTrue)
So(it.next(), ShouldResemble, uint16(MaxUint16))
So(it.hasNext(), ShouldBeFalse)
}
{
rc := newRunContainer16TakeOwnership([]interval16{newInterval16Range(4, 9)})
it := rc.newRunReverseIterator16()
So(it.hasNext(), ShouldBeTrue)
for i := 9; i >= 4; i-- {
So(it.next(), ShouldEqual, uint16(i))
if i > 4 {
So(it.hasNext(), ShouldBeTrue)
} else if i == 4 {
So(it.hasNext(), ShouldBeFalse)
}
}
So(it.hasNext(), ShouldBeFalse)
So(func() { it.next() }, ShouldPanic)
}
{
rc := newRunContainer16TakeOwnership([]interval16{
newInterval16Range(0, 0),
newInterval16Range(2, 2),
newInterval16Range(4, 4),
newInterval16Range(6, 7),
newInterval16Range(10, 12),
newInterval16Range(MaxUint16, MaxUint16),
})
it := rc.newRunReverseIterator16()
So(it.next(), ShouldEqual, uint16(MaxUint16))
So(it.next(), ShouldEqual, uint16(12))
So(it.next(), ShouldEqual, uint16(11))
So(it.next(), ShouldEqual, uint16(10))
So(it.next(), ShouldEqual, uint16(7))
So(it.next(), ShouldEqual, uint16(6))
So(it.next(), ShouldEqual, uint16(4))
So(it.next(), ShouldEqual, uint16(2))
So(it.next(), ShouldEqual, uint16(0))
So(it.hasNext(), ShouldEqual, false)
So(func() { it.next() }, ShouldPanic)
}
})
}
func TestRleRunSearch16(t *testing.T) {
Convey("RunContainer16.search should respect the prior bounds we provide for efficiency of searching through a subset of the intervals", t, func() {
{
vals := []uint16{0, 2, 4, 6, 8, 10, 12, 14, 16, 18, MaxUint16 - 3, MaxUint16}
exAt := []int{0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11} // expected at
absent := []uint16{1, 3, 5, 7, 9, 11, 13, 15, 17, 19, MaxUint16 - 2}
rc := newRunContainer16FromVals(true, vals...)
So(rc.cardinality(), ShouldEqual, 12)
var where int64
var present bool
for i, v := range vals {
where, present, _ = rc.search(int64(v), nil)
So(present, ShouldBeTrue)
So(where, ShouldEqual, exAt[i])
}
for i, v := range absent {
where, present, _ = rc.search(int64(v), nil)
So(present, ShouldBeFalse)
So(where, ShouldEqual, i)
}
// delete the MaxUint16 so we can test
// the behavior when searching near upper limit.
So(rc.cardinality(), ShouldEqual, 12)
So(rc.numIntervals(), ShouldEqual, 12)
rc.removeKey(MaxUint16)
So(rc.cardinality(), ShouldEqual, 11)
So(rc.numIntervals(), ShouldEqual, 11)
where, present, _ = rc.search(MaxUint16, nil)
So(present, ShouldBeFalse)
So(where, ShouldEqual, 10)
var numCompares int
where, present, numCompares = rc.search(MaxUint16, nil)
So(present, ShouldBeFalse)
So(where, ShouldEqual, 10)
So(numCompares, ShouldEqual, 3)
opts := &searchOptions{
startIndex: 5,
}
where, present, numCompares = rc.search(MaxUint16, opts)
So(present, ShouldBeFalse)
So(where, ShouldEqual, 10)
So(numCompares, ShouldEqual, 2)
where, present, _ = rc.search(MaxUint16-3, opts)
So(present, ShouldBeTrue)
So(where, ShouldEqual, 10)
// with the bound in place, MaxUint16-3 should not be found
opts.endxIndex = 10
where, present, _ = rc.search(MaxUint16-3, opts)
So(present, ShouldBeFalse)
So(where, ShouldEqual, 9)
}
})
}
func TestRleIntersection16(t *testing.T) {
Convey("RunContainer16.intersect of two RunContainer16(s) should return their intersection", t, func() {
{
vals := []uint16{0, 2, 4, 6, 8, 10, 12, 14, 16, 18, MaxUint16 - 3, MaxUint16 - 1}
a := newRunContainer16FromVals(true, vals[:5]...)
b := newRunContainer16FromVals(true, vals[2:]...)
So(haveOverlap16(newInterval16Range(0, 2), newInterval16Range(2, 2)), ShouldBeTrue)
So(haveOverlap16(newInterval16Range(0, 2), newInterval16Range(3, 3)), ShouldBeFalse)
isect := a.intersect(b)
So(isect.cardinality(), ShouldEqual, 3)
So(isect.contains(4), ShouldBeTrue)
So(isect.contains(6), ShouldBeTrue)
So(isect.contains(8), ShouldBeTrue)
newInterval16Range(0, MaxUint16)
d := newRunContainer16TakeOwnership([]interval16{newInterval16Range(0, MaxUint16)})
isect = isect.intersect(d)
So(isect.cardinality(), ShouldEqual, 3)
So(isect.contains(4), ShouldBeTrue)
So(isect.contains(6), ShouldBeTrue)
So(isect.contains(8), ShouldBeTrue)
e := newRunContainer16TakeOwnership(
[]interval16{
newInterval16Range(2, 4),
newInterval16Range(8, 9),
newInterval16Range(14, 16),
newInterval16Range(20, 22)},
)
f := newRunContainer16TakeOwnership(
[]interval16{
newInterval16Range(3, 18),
newInterval16Range(22, 23)},
)
{
isect = e.intersect(f)
So(isect.cardinality(), ShouldEqual, 8)
So(isect.contains(3), ShouldBeTrue)
So(isect.contains(4), ShouldBeTrue)
So(isect.contains(8), ShouldBeTrue)
So(isect.contains(9), ShouldBeTrue)
So(isect.contains(14), ShouldBeTrue)
So(isect.contains(15), ShouldBeTrue)
So(isect.contains(16), ShouldBeTrue)
So(isect.contains(22), ShouldBeTrue)
}
{
// check for symmetry
isect = f.intersect(e)
So(isect.cardinality(), ShouldEqual, 8)
So(isect.contains(3), ShouldBeTrue)
So(isect.contains(4), ShouldBeTrue)
So(isect.contains(8), ShouldBeTrue)
So(isect.contains(9), ShouldBeTrue)
So(isect.contains(14), ShouldBeTrue)
So(isect.contains(15), ShouldBeTrue)
So(isect.contains(16), ShouldBeTrue)
So(isect.contains(22), ShouldBeTrue)
}
}
})
}
func TestRleRandomIntersection16(t *testing.T) {
Convey("RunContainer.intersect of two RunContainers should return their intersection, and this should hold over randomized container content when compared to intersection done with hash maps", t, func() {
seed := int64(42)
rand.Seed(seed)
trials := []trial{
{n: 100, percentFill: .80, ntrial: 10},
{n: 1000, percentFill: .20, ntrial: 20},
{n: 10000, percentFill: .01, ntrial: 10},
{n: 1000, percentFill: .99, ntrial: 10},
}
tester := func(tr trial) {
for j := 0; j < tr.ntrial; j++ {
ma := make(map[int]bool)
mb := make(map[int]bool)
n := tr.n
a := []uint16{}
b := []uint16{}
var first, second int
draw := int(float64(n) * tr.percentFill)
for i := 0; i < draw; i++ {
r0 := rand.Intn(n)
a = append(a, uint16(r0))
ma[r0] = true
if i == 0 {
first = r0
second = r0 + 1
a = append(a, uint16(second))
ma[second] = true
}
r1 := rand.Intn(n)
b = append(b, uint16(r1))
mb[r1] = true
}
// print a; very likely it has dups
sort.Sort(uint16Slice(a))
stringA := ""
for i := range a {
stringA += fmt.Sprintf("%v, ", a[i])
}
// hash version of intersect:
hashi := make(map[int]bool)
for k := range ma {
if mb[k] {
hashi[k] = true
}
}
// RunContainer's Intersect
brle := newRunContainer16FromVals(false, b...)
//arle := newRunContainer16FromVals(false, a...)
// instead of the above line, create from array
// get better test coverage:
arr := newArrayContainerRange(int(first), int(second))
arle := newRunContainer16FromArray(arr)
arle.set(false, a...)
isect := arle.intersect(brle)
//showHash("hashi", hashi)
for k := range hashi {
So(isect.contains(uint16(k)), ShouldBeTrue)
}
So(isect.cardinality(), ShouldEqual, len(hashi))
}
}
for i := range trials {
tester(trials[i])
}
})
}
func TestRleRandomUnion16(t *testing.T) {
Convey("RunContainer.union of two RunContainers should return their union, and this should hold over randomized container content when compared to union done with hash maps", t, func() {
seed := int64(42)
rand.Seed(seed)
trials := []trial{
{n: 100, percentFill: .80, ntrial: 10},
{n: 1000, percentFill: .20, ntrial: 20},
{n: 10000, percentFill: .01, ntrial: 10},
{n: 1000, percentFill: .99, ntrial: 10, percentDelete: .04},
}
tester := func(tr trial) {
for j := 0; j < tr.ntrial; j++ {
ma := make(map[int]bool)
mb := make(map[int]bool)
n := tr.n
a := []uint16{}
b := []uint16{}
draw := int(float64(n) * tr.percentFill)
numDel := int(float64(n) * tr.percentDelete)
for i := 0; i < draw; i++ {
r0 := rand.Intn(n)
a = append(a, uint16(r0))
ma[r0] = true
r1 := rand.Intn(n)
b = append(b, uint16(r1))
mb[r1] = true
}
// hash version of union:
hashu := make(map[int]bool)
for k := range ma {
hashu[k] = true
}
for k := range mb {
hashu[k] = true
}
//showHash("hashu", hashu)
// RunContainer's Union
arle := newRunContainer16()
for i := range a {
arle.Add(a[i])
}
brle := newRunContainer16()
brle.set(false, b...)
union := arle.union(brle)
un := union.AsSlice()
sort.Sort(uint16Slice(un))
for kk, v := range un {
_ = kk
So(hashu[int(v)], ShouldBeTrue)
}
for k := range hashu {
So(union.contains(uint16(k)), ShouldBeTrue)
}
So(union.cardinality(), ShouldEqual, len(hashu))
// do the deletes, exercising the remove functionality
for i := 0; i < numDel; i++ {
r1 := rand.Intn(len(a))
goner := a[r1]
union.removeKey(goner)
delete(hashu, int(goner))
}
// verify the same as in the hashu
So(union.cardinality(), ShouldEqual, len(hashu))
for k := range hashu {
So(union.contains(uint16(k)), ShouldBeTrue)
}
}
}
for i := range trials {
tester(trials[i])
}
})
}
func TestRleAndOrXor16(t *testing.T) {
Convey("RunContainer And, Or, Xor tests", t, func() {
{
rc := newRunContainer16TakeOwnership([]interval16{
newInterval16Range(0, 0),
newInterval16Range(2, 2),
newInterval16Range(4, 4),
})
b0 := NewBitmap()
b0.Add(2)
b0.Add(6)
b0.Add(8)
and := rc.And(b0)
or := rc.Or(b0)
xor := rc.Xor(b0)
So(and.GetCardinality(), ShouldEqual, 1)
So(or.GetCardinality(), ShouldEqual, 5)
So(xor.GetCardinality(), ShouldEqual, 4)
// test creating size 0 and 1 from array
arr := newArrayContainerCapacity(0)
empty := newRunContainer16FromArray(arr)
onceler := newArrayContainerCapacity(1)
onceler.content = append(onceler.content, uint16(0))
oneZero := newRunContainer16FromArray(onceler)
So(empty.cardinality(), ShouldEqual, 0)
So(oneZero.cardinality(), ShouldEqual, 1)
So(empty.And(b0).GetCardinality(), ShouldEqual, 0)
So(empty.Or(b0).GetCardinality(), ShouldEqual, 3)
// exercise newRunContainer16FromVals() with 0 and 1 inputs.
empty2 := newRunContainer16FromVals(false, []uint16{}...)
So(empty2.cardinality(), ShouldEqual, 0)
one2 := newRunContainer16FromVals(false, []uint16{1}...)
So(one2.cardinality(), ShouldEqual, 1)
}
})
}
func TestRlePanics16(t *testing.T) {
Convey("Some RunContainer calls/methods should panic if misused", t, func() {
// newRunContainer16FromVals
So(func() { newRunContainer16FromVals(true, 1, 0) }, ShouldPanic)
arr := newArrayContainerRange(1, 3)
arr.content = []uint16{2, 3, 3, 2, 1}
So(func() { newRunContainer16FromArray(arr) }, ShouldPanic)
})
}
func TestRleCoverageOddsAndEnds16(t *testing.T) {
Convey("Some RunContainer code paths that don't otherwise get coverage -- these should be tested to increase percentage of code coverage in testing", t, func() {
rc := &runContainer16{}
So(rc.String(), ShouldEqual, "runContainer16{}")
rc.iv = make([]interval16, 1)
rc.iv[0] = newInterval16Range(3, 4)
So(rc.String(), ShouldEqual, "runContainer16{0:[3, 4], }")
a := newInterval16Range(5, 9)
b := newInterval16Range(0, 1)
c := newInterval16Range(1, 2)
// intersectInterval16s(a, b interval16)
isect, isEmpty := intersectInterval16s(a, b)
So(isEmpty, ShouldBeTrue)
// [0,0] can't be trusted: So(isect.runlen(), ShouldEqual, 0)
isect, isEmpty = intersectInterval16s(b, c)
So(isEmpty, ShouldBeFalse)
So(isect.runlen(), ShouldEqual, 1)
// runContainer16.union
{
ra := newRunContainer16FromVals(false, 4, 5)
rb := newRunContainer16FromVals(false, 4, 6, 8, 9, 10)
ra.union(rb)
So(rb.indexOfIntervalAtOrAfter(4, 2), ShouldEqual, 2)
So(rb.indexOfIntervalAtOrAfter(3, 2), ShouldEqual, 2)
}
// runContainer.intersect
{
ra := newRunContainer16()
rb := newRunContainer16()
So(ra.intersect(rb).cardinality(), ShouldEqual, 0)
}
{
ra := newRunContainer16FromVals(false, 1)
rb := newRunContainer16FromVals(false, 4)
So(ra.intersect(rb).cardinality(), ShouldEqual, 0)
}
// runContainer.Add
{
ra := newRunContainer16FromVals(false, 1)
rb := newRunContainer16FromVals(false, 4)
So(ra.cardinality(), ShouldEqual, 1)
So(rb.cardinality(), ShouldEqual, 1)
ra.Add(5)
So(ra.cardinality(), ShouldEqual, 2)
// newRunIterator16()
empty := newRunContainer16()
it := empty.newRunIterator16()
So(func() { it.next() }, ShouldPanic)
it2 := ra.newRunIterator16()
it2.curIndex = int64(len(it2.rc.iv))
So(func() { it2.next() }, ShouldPanic)
// runIterator16.peekNext()
emptyIt := empty.newRunIterator16()
So(func() { emptyIt.peekNext() }, ShouldPanic)
// newRunContainer16FromArray
arr := newArrayContainerRange(1, 6)
arr.content = []uint16{5, 5, 5, 6, 9}
rc3 := newRunContainer16FromArray(arr)
So(rc3.cardinality(), ShouldEqual, 3)
// runContainer16SerializedSizeInBytes
// runContainer16.SerializedSizeInBytes
_ = runContainer16SerializedSizeInBytes(3)
_ = rc3.serializedSizeInBytes()
// findNextIntervalThatIntersectsStartingFrom
idx, _ := rc3.findNextIntervalThatIntersectsStartingFrom(0, 100)
So(idx, ShouldEqual, 1)
// deleteAt / remove
rc3.Add(10)
rc3.removeKey(10)
rc3.removeKey(9)
So(rc3.cardinality(), ShouldEqual, 2)
rc3.Add(9)
rc3.Add(10)
rc3.Add(12)
So(rc3.cardinality(), ShouldEqual, 5)
it3 := rc3.newRunIterator16()
it3.next()
it3.next()
it3.next()
it3.next()
So(it3.peekNext(), ShouldEqual, uint16(12))
So(it3.next(), ShouldEqual, uint16(12))
}
// runContainer16.equals
{
rc16 := newRunContainer16()
So(rc16.equals16(rc16), ShouldBeTrue)
rc16b := newRunContainer16()
So(rc16.equals16(rc16b), ShouldBeTrue)
rc16.Add(1)
rc16b.Add(2)
So(rc16.equals16(rc16b), ShouldBeFalse)
}
})
}
func TestRleStoringMax16(t *testing.T) {
Convey("Storing the MaxUint16 should be possible, because it may be necessary to do so--users will assume that any valid uint16 should be storable. In particular the smaller 16-bit version will definitely expect full access to all bits.", t, func() {
rc := newRunContainer16()
rc.Add(MaxUint16)
So(rc.contains(MaxUint16), ShouldBeTrue)
So(rc.cardinality(), ShouldEqual, 1)
rc.removeKey(MaxUint16)
So(rc.contains(MaxUint16), ShouldBeFalse)
So(rc.cardinality(), ShouldEqual, 0)
rc.set(false, MaxUint16-1, MaxUint16)
So(rc.cardinality(), ShouldEqual, 2)
So(rc.contains(MaxUint16-1), ShouldBeTrue)
So(rc.contains(MaxUint16), ShouldBeTrue)
rc.removeKey(MaxUint16 - 1)
So(rc.cardinality(), ShouldEqual, 1)
rc.removeKey(MaxUint16)
So(rc.cardinality(), ShouldEqual, 0)
rc.set(false, MaxUint16-2, MaxUint16-1, MaxUint16)
So(rc.cardinality(), ShouldEqual, 3)
So(rc.numIntervals(), ShouldEqual, 1)
rc.removeKey(MaxUint16 - 1)
So(rc.numIntervals(), ShouldEqual, 2)
So(rc.cardinality(), ShouldEqual, 2)
})
}
// go test -bench BenchmarkFromBitmap -run -
func BenchmarkFromBitmap16(b *testing.B) {
b.StopTimer()
seed := int64(42)
rand.Seed(seed)
tr := trial{n: 10000, percentFill: .95, ntrial: 1, numRandomOpsPass: 100}
_, _, bc := getRandomSameThreeContainers(tr)
b.StartTimer()
for j := 0; j < b.N; j++ {
newRunContainer16FromBitmapContainer(bc)
}
}
func TestRle16RandomIntersectAgainstOtherContainers010(t *testing.T) {
Convey("runContainer16 `and` operation against other container types should correctly do the intersection", t, func() {
seed := int64(42)
rand.Seed(seed)
trials := []trial{
{n: 100, percentFill: .95, ntrial: 1},
}
tester := func(tr trial) {
for j := 0; j < tr.ntrial; j++ {
ma := make(map[int]bool)
mb := make(map[int]bool)
n := tr.n
a := []uint16{}
b := []uint16{}
draw := int(float64(n) * tr.percentFill)
for i := 0; i < draw; i++ {
r0 := rand.Intn(n)
a = append(a, uint16(r0))
ma[r0] = true
r1 := rand.Intn(n)
b = append(b, uint16(r1))
mb[r1] = true
}
//showArray16(a, "a")
//showArray16(b, "b")
// hash version of intersect:
hashi := make(map[int]bool)
for k := range ma {
if mb[k] {
hashi[k] = true
}
}
// RunContainer's Intersect
rc := newRunContainer16FromVals(false, a...)
// vs bitmapContainer
bc := newBitmapContainer()
for _, bv := range b {
bc.iadd(bv)
}
// vs arrayContainer
ac := newArrayContainer()
for _, bv := range b {
ac.iadd(bv)
}
// vs runContainer
rcb := newRunContainer16FromVals(false, b...)
rcVsBcIsect := rc.and(bc)
rcVsAcIsect := rc.and(ac)
rcVsRcbIsect := rc.and(rcb)
for k := range hashi {
So(rcVsBcIsect.contains(uint16(k)), ShouldBeTrue)
So(rcVsAcIsect.contains(uint16(k)), ShouldBeTrue)
So(rcVsRcbIsect.contains(uint16(k)), ShouldBeTrue)
}
So(rcVsBcIsect.getCardinality(), ShouldEqual, len(hashi))
So(rcVsAcIsect.getCardinality(), ShouldEqual, len(hashi))
So(rcVsRcbIsect.getCardinality(), ShouldEqual, len(hashi))
}
}
for i := range trials {
tester(trials[i])
}
})
}
func TestRle16RandomUnionAgainstOtherContainers011(t *testing.T) {
Convey("runContainer16 `or` operation against other container types should correctly do the intersection", t, func() {
seed := int64(42)
rand.Seed(seed)
trials := []trial{
{n: 100, percentFill: .95, ntrial: 1},
}
tester := func(tr trial) {
for j := 0; j < tr.ntrial; j++ {
ma := make(map[int]bool)
mb := make(map[int]bool)
n := tr.n
a := []uint16{}
b := []uint16{}
draw := int(float64(n) * tr.percentFill)
for i := 0; i < draw; i++ {
r0 := rand.Intn(n)
a = append(a, uint16(r0))
ma[r0] = true
r1 := rand.Intn(n)
b = append(b, uint16(r1))
mb[r1] = true
}
//showArray16(a, "a")
//showArray16(b, "b")
// hash version of union
hashi := make(map[int]bool)
for k := range ma {
hashi[k] = true