mirror of
https://github.com/VictoriaMetrics/VictoriaMetrics.git
synced 2024-12-15 08:23:34 +01:00
448 lines
11 KiB
Go
448 lines
11 KiB
Go
package uint64set
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import (
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"fmt"
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"math/rand"
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"reflect"
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"sort"
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"testing"
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"time"
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)
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func TestSetBasicOps(t *testing.T) {
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for _, itemsCount := range []int{1, 2, 3, 4, 5, 6, 1e2, 1e3, 1e4, 1e5, 1e6, maxUnsortedBuckets * bitsPerBucket * 2} {
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t.Run(fmt.Sprintf("items_%d", itemsCount), func(t *testing.T) {
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testSetBasicOps(t, itemsCount)
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})
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}
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}
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func testSetBasicOps(t *testing.T, itemsCount int) {
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var s Set
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offset := uint64(time.Now().UnixNano())
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// Verify operations on nil set
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{
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var sNil *Set
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if n := sNil.SizeBytes(); n != 0 {
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t.Fatalf("sNil.SizeBytes must return 0; got %d", n)
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}
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if sNil.Has(123) {
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t.Fatalf("sNil shouldn't contain any item; found 123")
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}
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if n := sNil.Len(); n != 0 {
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t.Fatalf("unexpected sNil.Len(); got %d; want 0", n)
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}
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result := sNil.AppendTo(nil)
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if result != nil {
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t.Fatalf("sNil.AppendTo(nil) must return nil")
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}
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buf := []uint64{1, 2, 3}
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result = sNil.AppendTo(buf)
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if !reflect.DeepEqual(result, buf) {
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t.Fatalf("sNil.AppendTo(buf) must return buf")
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}
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sCopy := sNil.Clone()
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if n := sCopy.Len(); n != 0 {
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t.Fatalf("unexpected sCopy.Len() from nil set; got %d; want 0", n)
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}
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sCopy.Add(123)
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if n := sCopy.Len(); n != 1 {
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t.Fatalf("unexpected sCopy.Len() after adding an item; got %d; want 1", n)
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}
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sCopy.Add(123)
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if n := sCopy.Len(); n != 1 {
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t.Fatalf("unexpected sCopy.Len() after adding an item twice; got %d; want 1", n)
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}
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if !sCopy.Has(123) {
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t.Fatalf("sCopy must contain 123")
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}
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sCopy.Del(123)
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if n := sCopy.Len(); n != 0 {
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t.Fatalf("unexpected sCopy.Len() after deleting the item; got %d; want 0", n)
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}
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sCopy.Del(123)
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if n := sCopy.Len(); n != 0 {
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t.Fatalf("unexpected sCopy.Len() after double deleting the item; got %d; want 0", n)
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}
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}
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// Verify forward Add
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itemsCount = (itemsCount / 2) * 2
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for i := 0; i < itemsCount/2; i++ {
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s.Add(uint64(i) + offset)
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}
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if n := s.Len(); n != itemsCount/2 {
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t.Fatalf("unexpected s.Len() after forward Add; got %d; want %d", n, itemsCount/2)
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}
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if n := s.SizeBytes(); n == 0 {
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t.Fatalf("s.SizeBytes() must be greater than 0")
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}
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// Verify backward Add
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for i := 0; i < itemsCount/2; i++ {
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s.Add(uint64(itemsCount-i-1) + offset)
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}
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if n := s.Len(); n != itemsCount {
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t.Fatalf("unexpected s.Len() after backward Add; got %d; want %d", n, itemsCount)
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}
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// Verify repeated Add
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for i := 0; i < itemsCount/2; i++ {
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s.Add(uint64(i) + offset)
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}
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if n := s.Len(); n != itemsCount {
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t.Fatalf("unexpected s.Len() after repeated Add; got %d; want %d", n, itemsCount)
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}
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// Verify Has on existing bits
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for i := 0; i < itemsCount; i++ {
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if !s.Has(uint64(i) + offset) {
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t.Fatalf("missing bit %d", uint64(i)+offset)
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}
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}
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// Verify Has on missing bits
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for i := itemsCount; i < 2*itemsCount; i++ {
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if s.Has(uint64(i) + offset) {
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t.Fatalf("unexpected bit found: %d", uint64(i)+offset)
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}
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}
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// Verify Clone and Equal
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sCopy := s.Clone()
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if n := sCopy.Len(); n != itemsCount {
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t.Fatalf("unexpected sCopy.Len(); got %d; want %d", n, itemsCount)
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}
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for i := 0; i < itemsCount; i++ {
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if !sCopy.Has(uint64(i) + offset) {
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t.Fatalf("missing bit %d on sCopy", uint64(i)+offset)
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}
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}
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if !sCopy.Equal(&s) {
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t.Fatalf("s must equal to sCopy")
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}
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if !s.Equal(sCopy) {
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t.Fatalf("sCopy must equal to s")
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}
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if s.Len() > 0 {
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var sEmpty Set
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if s.Equal(&sEmpty) {
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t.Fatalf("s mustn't equal to sEmpty")
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}
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sNew := s.Clone()
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sNew.Del(offset)
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if sNew.Equal(&s) {
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t.Fatalf("sNew mustn't equal to s")
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}
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if s.Equal(sNew) {
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t.Fatalf("s mustn't equal to sNew")
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}
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sNew.Add(offset - 123)
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if sNew.Equal(&s) {
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t.Fatalf("sNew mustn't equal to s")
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}
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if s.Equal(sNew) {
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t.Fatalf("s mustn't equal to sNew")
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}
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}
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// Verify AppendTo
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a := s.AppendTo(nil)
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if len(a) != itemsCount {
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t.Fatalf("unexpected len of exported array; got %d; want %d; array:\n%d", len(a), itemsCount, a)
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}
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if !sort.SliceIsSorted(a, func(i, j int) bool { return a[i] < a[j] }) {
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t.Fatalf("unsorted result returned from AppendTo: %d", a)
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}
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m := make(map[uint64]bool)
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for _, x := range a {
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m[x] = true
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}
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for i := 0; i < itemsCount; i++ {
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if !m[uint64(i)+offset] {
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t.Fatalf("missing bit %d in the exported bits; array:\n%d", uint64(i)+offset, a)
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}
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}
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// Verify ForEach
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{
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var s Set
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m := make(map[uint64]bool)
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for i := 0; i < itemsCount; i++ {
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v := uint64(i) + offset
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s.Add(v)
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m[v] = true
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}
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// Verify visiting all the items.
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s.ForEach(func(part []uint64) bool {
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for _, v := range part {
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if !m[v] {
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t.Fatalf("unexpected value v=%d passed to ForEach", v)
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}
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delete(m, v)
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}
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return true
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})
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if len(m) != 0 {
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t.Fatalf("ForEach didn't visit %d items; items: %v", len(m), m)
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}
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// Verify fast stop
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calls := 0
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s.ForEach(func(part []uint64) bool {
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calls++
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return false
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})
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if itemsCount > 0 && calls != 1 {
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t.Fatalf("Unexpected number of ForEach callback calls; got %d; want %d", calls, 1)
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}
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// Verify ForEach on nil set.
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var s1 *Set
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s1.ForEach(func(part []uint64) bool {
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t.Fatalf("callback shouldn't be called on empty set")
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return true
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})
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}
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// Verify union
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{
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const unionOffset = 12345
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var s1, s2 Set
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for i := 0; i < itemsCount; i++ {
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s1.Add(uint64(i) + offset)
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s2.Add(uint64(i) + offset + unionOffset)
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}
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s1.Union(&s2)
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expectedLen := 2 * itemsCount
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if itemsCount > unionOffset {
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expectedLen = itemsCount + unionOffset
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}
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if n := s1.Len(); n != expectedLen {
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t.Fatalf("unexpected s1.Len() after union; got %d; want %d", n, expectedLen)
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}
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// Verify union on empty set.
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var s3 Set
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s3.Union(&s1)
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expectedLen = s1.Len()
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if n := s3.Len(); n != expectedLen {
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t.Fatalf("unexpected s3.Len() after union with empty set; got %d; want %d", n, expectedLen)
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}
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var s4 Set
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expectedLen = s3.Len()
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s3.Union(&s4)
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if n := s3.Len(); n != expectedLen {
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t.Fatalf("unexpected s3.Len() after union with empty set; got %d; want %d", n, expectedLen)
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}
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}
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// Verify intersect
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{
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// Verify s1.Intersect(s2) and s2.Intersect(s1)
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var s1, s2 Set
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for _, intersectOffset := range []uint64{123, 12345, 1<<32 + 4343} {
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s1 = Set{}
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s2 = Set{}
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for i := 0; i < itemsCount; i++ {
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s1.Add(uint64(i) + offset)
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s2.Add(uint64(i) + offset + intersectOffset)
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}
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expectedLen := 0
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if uint64(itemsCount) > intersectOffset {
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expectedLen = int(uint64(itemsCount) - intersectOffset)
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}
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s1Copy := s1.Clone()
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s1Copy.Intersect(&s2)
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if n := s1Copy.Len(); n != expectedLen {
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t.Fatalf("unexpected s1.Len() after intersect; got %d; want %d", n, expectedLen)
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}
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s2.Intersect(&s1)
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if n := s2.Len(); n != expectedLen {
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t.Fatalf("unexpected s2.Len() after intersect; got %d; want %d", n, expectedLen)
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}
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}
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// Verify intersect on empty set.
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var s3 Set
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s2.Intersect(&s3)
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expectedLen := 0
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if n := s2.Len(); n != expectedLen {
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t.Fatalf("unexpected s3.Len() after intersect with empty set; got %d; want %d", n, expectedLen)
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}
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var s4 Set
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s4.Intersect(&s1)
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if n := s4.Len(); n != expectedLen {
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t.Fatalf("unexpected s4.Len() after intersect with empty set; got %d; want %d", n, expectedLen)
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}
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}
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// Verify subtract
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{
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const subtractOffset = 12345
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var s1, s2 Set
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for i := 0; i < itemsCount; i++ {
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s1.Add(uint64(i) + offset)
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s2.Add(uint64(i) + offset + subtractOffset)
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}
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s1.Subtract(&s2)
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expectedLen := itemsCount
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if itemsCount > subtractOffset {
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expectedLen = subtractOffset
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}
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if n := s1.Len(); n != expectedLen {
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t.Fatalf("unexpected s1.Len() after subtract; got %d; want %d", n, expectedLen)
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}
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// Verify subtract from empty set.
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var s3 Set
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s3.Subtract(&s2)
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expectedLen = 0
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if n := s3.Len(); n != 0 {
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t.Fatalf("unexpected s3.Len() after subtract from empty set; got %d; want %d", n, expectedLen)
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}
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}
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// Verify Del
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itemsDeleted := 0
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for i := itemsCount / 2; i < itemsCount-itemsCount/4; i++ {
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s.Del(uint64(i) + offset)
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itemsDeleted++
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}
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if n := s.Len(); n != itemsCount-itemsDeleted {
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t.Fatalf("unexpected s.Len() after Del; got %d; want %d", n, itemsCount-itemsDeleted)
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}
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a = s.AppendTo(a[:0])
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if len(a) != itemsCount-itemsDeleted {
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t.Fatalf("unexpected len of exported array; got %d; want %d", len(a), itemsCount-itemsDeleted)
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}
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m = make(map[uint64]bool)
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for _, x := range a {
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m[x] = true
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}
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for i := 0; i < itemsCount; i++ {
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if i >= itemsCount/2 && i < itemsCount-itemsCount/4 {
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if m[uint64(i)+offset] {
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t.Fatalf("unexpected bit found after deleting: %d", uint64(i)+offset)
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}
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} else {
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if !m[uint64(i)+offset] {
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t.Fatalf("missing bit %d in the exported bits after deleting", uint64(i)+offset)
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}
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}
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}
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// Try Del for non-existing items
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for i := itemsCount / 2; i < itemsCount-itemsCount/4; i++ {
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s.Del(uint64(i) + offset)
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s.Del(uint64(i) + offset)
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s.Del(uint64(i) + offset + uint64(itemsCount))
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}
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if n := s.Len(); n != itemsCount-itemsDeleted {
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t.Fatalf("unexpected s.Len() after Del for non-existing items; got %d; want %d", n, itemsCount-itemsDeleted)
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}
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// Verify sCopy has the original data
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if n := sCopy.Len(); n != itemsCount {
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t.Fatalf("unexpected sCopy.Len(); got %d; want %d", n, itemsCount)
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}
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for i := 0; i < itemsCount; i++ {
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if !sCopy.Has(uint64(i) + offset) {
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t.Fatalf("missing bit %d on sCopy", uint64(i)+offset)
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}
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}
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}
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func TestSetSparseItems(t *testing.T) {
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for _, itemsCount := range []int{1e2, 1e3, 1e4} {
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t.Run(fmt.Sprintf("items_%d", itemsCount), func(t *testing.T) {
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testSetSparseItems(t, itemsCount)
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})
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}
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}
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func testSetSparseItems(t *testing.T, itemsCount int) {
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var s Set
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m := make(map[uint64]bool)
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for i := 0; i < itemsCount; i++ {
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x := rand.Uint64()
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s.Add(x)
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m[x] = true
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}
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if n := s.Len(); n != len(m) {
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t.Fatalf("unexpected Len(); got %d; want %d", n, len(m))
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}
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if n := s.SizeBytes(); n == 0 {
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t.Fatalf("SizeBytes() must return value greater than 0")
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}
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// Check Has
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for x := range m {
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if !s.Has(x) {
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t.Fatalf("missing item %d", x)
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}
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}
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for i := 0; i < itemsCount; i++ {
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x := uint64(i)
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if m[x] {
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continue
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}
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if s.Has(x) {
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t.Fatalf("unexpected item found %d", x)
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}
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}
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// Check Clone
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sCopy := s.Clone()
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if n := sCopy.Len(); n != len(m) {
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t.Fatalf("unexpected sCopy.Len(); got %d; want %d", n, len(m))
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}
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for x := range m {
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if !sCopy.Has(x) {
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t.Fatalf("missing item %d on sCopy", x)
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}
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}
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// Check AppendTo
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a := s.AppendTo(nil)
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if len(a) != len(m) {
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t.Fatalf("unexpected len for AppendTo result; got %d; want %d", len(a), len(m))
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}
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if !sort.SliceIsSorted(a, func(i, j int) bool { return a[i] < a[j] }) {
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t.Fatalf("unsorted result returned from AppendTo: %d", a)
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}
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for _, x := range a {
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if !m[x] {
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t.Fatalf("unexpected item found in AppendTo result: %d", x)
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}
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}
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// Check Del
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for x := range m {
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s.Del(x)
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s.Del(x)
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s.Del(x + 1)
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s.Del(x - 1)
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}
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if n := s.Len(); n != 0 {
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t.Fatalf("unexpected number of items left after Del; got %d; want 0", n)
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}
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a = s.AppendTo(a[:0])
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if len(a) != 0 {
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t.Fatalf("unexpected number of items returned from AppendTo after Del; got %d; want 0; items\n%d", len(a), a)
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}
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// Check items in sCopy
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if n := sCopy.Len(); n != len(m) {
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t.Fatalf("unexpected sCopy.Len() after Del; got %d; want %d", n, len(m))
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}
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for x := range m {
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if !sCopy.Has(x) {
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t.Fatalf("missing item %d on sCopy after Del", x)
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}
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}
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}
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