466 lines
12 KiB
Go
466 lines
12 KiB
Go
package ccache
|
|
|
|
import (
|
|
"math/rand"
|
|
"sort"
|
|
"strconv"
|
|
"sync"
|
|
"sync/atomic"
|
|
"testing"
|
|
"time"
|
|
|
|
"github.com/karlseguin/ccache/v3/assert"
|
|
)
|
|
|
|
func Test_Setnx(t *testing.T) {
|
|
cache := New(Configure[string]())
|
|
defer cache.Stop()
|
|
assert.Equal(t, cache.ItemCount(), 0)
|
|
|
|
cache.Set("spice", "flow", time.Minute)
|
|
assert.Equal(t, cache.ItemCount(), 1)
|
|
|
|
// set if exists
|
|
cache.Setnx("spice", "worm", time.Minute)
|
|
assert.Equal(t, cache.ItemCount(), 1)
|
|
assert.Equal(t, cache.Get("spice").Value(), "flow")
|
|
|
|
// set if not exists
|
|
cache.Delete("spice")
|
|
cache.Setnx("spice", "worm", time.Minute)
|
|
assert.Equal(t, cache.Get("spice").Value(), "worm")
|
|
|
|
assert.Equal(t, cache.ItemCount(), 1)
|
|
}
|
|
|
|
func Test_Extend(t *testing.T) {
|
|
cache := New(Configure[string]())
|
|
defer cache.Stop()
|
|
assert.Equal(t, cache.ItemCount(), 0)
|
|
|
|
// non exist
|
|
ok := cache.Extend("spice", time.Minute*10)
|
|
assert.Equal(t, false, ok)
|
|
|
|
// exist
|
|
cache.Set("spice", "flow", time.Minute)
|
|
assert.Equal(t, cache.ItemCount(), 1)
|
|
|
|
ok = cache.Extend("spice", time.Minute*10) // 10 + 10
|
|
assert.Equal(t, true, ok)
|
|
|
|
item := cache.Get("spice")
|
|
less := time.Minute*22 < time.Duration(item.expires)
|
|
assert.Equal(t, true, less)
|
|
more := time.Minute*18 < time.Duration(item.expires)
|
|
assert.Equal(t, true, more)
|
|
|
|
assert.Equal(t, cache.ItemCount(), 1)
|
|
}
|
|
|
|
func Test_CacheDeletesAValue(t *testing.T) {
|
|
cache := New(Configure[string]())
|
|
defer cache.Stop()
|
|
assert.Equal(t, cache.ItemCount(), 0)
|
|
|
|
cache.Set("spice", "flow", time.Minute)
|
|
cache.Set("worm", "sand", time.Minute)
|
|
assert.Equal(t, cache.ItemCount(), 2)
|
|
|
|
cache.Delete("spice")
|
|
assert.Equal(t, cache.Get("spice"), nil)
|
|
assert.Equal(t, cache.Get("worm").Value(), "sand")
|
|
assert.Equal(t, cache.ItemCount(), 1)
|
|
}
|
|
|
|
func Test_CacheDeletesAPrefix(t *testing.T) {
|
|
cache := New(Configure[string]())
|
|
defer cache.Stop()
|
|
assert.Equal(t, cache.ItemCount(), 0)
|
|
|
|
cache.Set("aaa", "1", time.Minute)
|
|
cache.Set("aab", "2", time.Minute)
|
|
cache.Set("aac", "3", time.Minute)
|
|
cache.Set("ac", "4", time.Minute)
|
|
cache.Set("z5", "7", time.Minute)
|
|
assert.Equal(t, cache.ItemCount(), 5)
|
|
|
|
assert.Equal(t, cache.DeletePrefix("9a"), 0)
|
|
assert.Equal(t, cache.ItemCount(), 5)
|
|
|
|
assert.Equal(t, cache.DeletePrefix("aa"), 3)
|
|
assert.Equal(t, cache.Get("aaa"), nil)
|
|
assert.Equal(t, cache.Get("aab"), nil)
|
|
assert.Equal(t, cache.Get("aac"), nil)
|
|
assert.Equal(t, cache.Get("ac").Value(), "4")
|
|
assert.Equal(t, cache.Get("z5").Value(), "7")
|
|
assert.Equal(t, cache.ItemCount(), 2)
|
|
}
|
|
|
|
func Test_CacheDeletesAFunc(t *testing.T) {
|
|
cache := New(Configure[int]())
|
|
defer cache.Stop()
|
|
assert.Equal(t, cache.ItemCount(), 0)
|
|
|
|
cache.Set("a", 1, time.Minute)
|
|
cache.Set("b", 2, time.Minute)
|
|
cache.Set("c", 3, time.Minute)
|
|
cache.Set("d", 4, time.Minute)
|
|
cache.Set("e", 5, time.Minute)
|
|
cache.Set("f", 6, time.Minute)
|
|
assert.Equal(t, cache.ItemCount(), 6)
|
|
|
|
assert.Equal(t, cache.DeleteFunc(func(key string, item *Item[int]) bool {
|
|
return false
|
|
}), 0)
|
|
assert.Equal(t, cache.ItemCount(), 6)
|
|
|
|
assert.Equal(t, cache.DeleteFunc(func(key string, item *Item[int]) bool {
|
|
return item.Value() < 4
|
|
}), 3)
|
|
assert.Equal(t, cache.ItemCount(), 3)
|
|
|
|
assert.Equal(t, cache.DeleteFunc(func(key string, item *Item[int]) bool {
|
|
return key == "d"
|
|
}), 1)
|
|
assert.Equal(t, cache.ItemCount(), 2)
|
|
|
|
}
|
|
|
|
func Test_CacheOnDeleteCallbackCalled(t *testing.T) {
|
|
onDeleteFnCalled := int32(0)
|
|
onDeleteFn := func(item *Item[string]) {
|
|
if item.key == "spice" {
|
|
atomic.AddInt32(&onDeleteFnCalled, 1)
|
|
}
|
|
}
|
|
|
|
cache := New(Configure[string]().OnDelete(onDeleteFn))
|
|
cache.Set("spice", "flow", time.Minute)
|
|
cache.Set("worm", "sand", time.Minute)
|
|
|
|
cache.SyncUpdates() // wait for worker to pick up preceding updates
|
|
|
|
cache.Delete("spice")
|
|
cache.SyncUpdates()
|
|
|
|
assert.Equal(t, cache.Get("spice"), nil)
|
|
assert.Equal(t, cache.Get("worm").Value(), "sand")
|
|
assert.Equal(t, atomic.LoadInt32(&onDeleteFnCalled), 1)
|
|
}
|
|
|
|
func Test_CacheFetchesExpiredItems(t *testing.T) {
|
|
cache := New(Configure[string]())
|
|
fn := func() (string, error) { return "moo-moo", nil }
|
|
|
|
cache.Set("beef", "moo", time.Second*-1)
|
|
assert.Equal(t, cache.Get("beef").Value(), "moo")
|
|
|
|
out, _ := cache.Fetch("beef", time.Second, fn)
|
|
assert.Equal(t, out.Value(), "moo-moo")
|
|
}
|
|
|
|
func Test_CacheGCsTheOldestItems(t *testing.T) {
|
|
cache := New(Configure[int]().ItemsToPrune(10))
|
|
for i := 0; i < 500; i++ {
|
|
cache.Set(strconv.Itoa(i), i, time.Minute)
|
|
}
|
|
cache.SyncUpdates()
|
|
cache.GC()
|
|
assert.Equal(t, cache.Get("9"), nil)
|
|
assert.Equal(t, cache.Get("10").Value(), 10)
|
|
assert.Equal(t, cache.ItemCount(), 490)
|
|
}
|
|
|
|
func Test_CachePromotedItemsDontGetPruned(t *testing.T) {
|
|
cache := New(Configure[int]().ItemsToPrune(10).GetsPerPromote(1))
|
|
for i := 0; i < 500; i++ {
|
|
cache.Set(strconv.Itoa(i), i, time.Minute)
|
|
}
|
|
cache.SyncUpdates()
|
|
cache.Get("9")
|
|
cache.SyncUpdates()
|
|
cache.GC()
|
|
assert.Equal(t, cache.Get("9").Value(), 9)
|
|
assert.Equal(t, cache.Get("10"), nil)
|
|
assert.Equal(t, cache.Get("11").Value(), 11)
|
|
}
|
|
|
|
func Test_GetWithoutPromoteDoesNotPromote(t *testing.T) {
|
|
cache := New(Configure[int]().ItemsToPrune(10).GetsPerPromote(1))
|
|
for i := 0; i < 500; i++ {
|
|
cache.Set(strconv.Itoa(i), i, time.Minute)
|
|
}
|
|
cache.SyncUpdates()
|
|
cache.GetWithoutPromote("9")
|
|
cache.SyncUpdates()
|
|
cache.GC()
|
|
assert.Equal(t, cache.Get("9"), nil)
|
|
assert.Equal(t, cache.Get("10").Value(), 10)
|
|
assert.Equal(t, cache.Get("11").Value(), 11)
|
|
}
|
|
|
|
func Test_CacheTrackerDoesNotCleanupHeldInstance(t *testing.T) {
|
|
cache := New(Configure[int]().ItemsToPrune(11).Track())
|
|
item0 := cache.TrackingSet("0", 0, time.Minute)
|
|
for i := 1; i < 11; i++ {
|
|
cache.Set(strconv.Itoa(i), i, time.Minute)
|
|
}
|
|
item1 := cache.TrackingGet("1")
|
|
cache.SyncUpdates()
|
|
cache.GC()
|
|
assert.Equal(t, cache.Get("0").Value(), 0)
|
|
assert.Equal(t, cache.Get("1").Value(), 1)
|
|
item0.Release()
|
|
item1.Release()
|
|
cache.GC()
|
|
assert.Equal(t, cache.Get("0"), nil)
|
|
assert.Equal(t, cache.Get("1"), nil)
|
|
}
|
|
|
|
func Test_CacheRemovesOldestItemWhenFull(t *testing.T) {
|
|
onDeleteFnCalled := false
|
|
onDeleteFn := func(item *Item[int]) {
|
|
if item.key == "0" {
|
|
onDeleteFnCalled = true
|
|
}
|
|
}
|
|
|
|
cache := New(Configure[int]().MaxSize(5).ItemsToPrune(1).OnDelete(onDeleteFn))
|
|
for i := 0; i < 7; i++ {
|
|
cache.Set(strconv.Itoa(i), i, time.Minute)
|
|
}
|
|
cache.SyncUpdates()
|
|
assert.Equal(t, cache.Get("0"), nil)
|
|
assert.Equal(t, cache.Get("1"), nil)
|
|
assert.Equal(t, cache.Get("2").Value(), 2)
|
|
assert.Equal(t, onDeleteFnCalled, true)
|
|
assert.Equal(t, cache.ItemCount(), 5)
|
|
}
|
|
|
|
func Test_CacheRemovesOldestItemWhenFullBySizer(t *testing.T) {
|
|
cache := New(Configure[*SizedItem]().MaxSize(9).ItemsToPrune(2))
|
|
for i := 0; i < 7; i++ {
|
|
cache.Set(strconv.Itoa(i), &SizedItem{i, 2}, time.Minute)
|
|
}
|
|
cache.SyncUpdates()
|
|
assert.Equal(t, cache.Get("0"), nil)
|
|
assert.Equal(t, cache.Get("1"), nil)
|
|
assert.Equal(t, cache.Get("2"), nil)
|
|
assert.Equal(t, cache.Get("3"), nil)
|
|
assert.Equal(t, cache.Get("4").Value().id, 4)
|
|
assert.Equal(t, cache.GetDropped(), 4)
|
|
assert.Equal(t, cache.GetDropped(), 0)
|
|
}
|
|
|
|
func Test_CacheSetUpdatesSizeOnDelta(t *testing.T) {
|
|
cache := New(Configure[*SizedItem]())
|
|
cache.Set("a", &SizedItem{0, 2}, time.Minute)
|
|
cache.Set("b", &SizedItem{0, 3}, time.Minute)
|
|
cache.SyncUpdates()
|
|
assert.Equal(t, cache.GetSize(), 5)
|
|
cache.Set("b", &SizedItem{0, 3}, time.Minute)
|
|
cache.SyncUpdates()
|
|
assert.Equal(t, cache.GetSize(), 5)
|
|
cache.Set("b", &SizedItem{0, 4}, time.Minute)
|
|
cache.SyncUpdates()
|
|
assert.Equal(t, cache.GetSize(), 6)
|
|
cache.Set("b", &SizedItem{0, 2}, time.Minute)
|
|
cache.SyncUpdates()
|
|
assert.Equal(t, cache.GetSize(), 4)
|
|
cache.Delete("b")
|
|
cache.SyncUpdates()
|
|
assert.Equal(t, cache.GetSize(), 2)
|
|
}
|
|
|
|
func Test_CacheReplaceDoesNotchangeSizeIfNotSet(t *testing.T) {
|
|
cache := New(Configure[*SizedItem]())
|
|
cache.Set("1", &SizedItem{1, 2}, time.Minute)
|
|
cache.Set("2", &SizedItem{1, 2}, time.Minute)
|
|
cache.Set("3", &SizedItem{1, 2}, time.Minute)
|
|
cache.Replace("4", &SizedItem{1, 2})
|
|
cache.SyncUpdates()
|
|
assert.Equal(t, cache.GetSize(), 6)
|
|
}
|
|
|
|
func Test_CacheReplaceChangesSize(t *testing.T) {
|
|
cache := New(Configure[*SizedItem]())
|
|
cache.Set("1", &SizedItem{1, 2}, time.Minute)
|
|
cache.Set("2", &SizedItem{1, 2}, time.Minute)
|
|
|
|
cache.Replace("2", &SizedItem{1, 2})
|
|
cache.SyncUpdates()
|
|
assert.Equal(t, cache.GetSize(), 4)
|
|
|
|
cache.Replace("2", &SizedItem{1, 1})
|
|
cache.SyncUpdates()
|
|
assert.Equal(t, cache.GetSize(), 3)
|
|
|
|
cache.Replace("2", &SizedItem{1, 3})
|
|
cache.SyncUpdates()
|
|
assert.Equal(t, cache.GetSize(), 5)
|
|
}
|
|
|
|
func Test_CacheResizeOnTheFly(t *testing.T) {
|
|
cache := New(Configure[int]().MaxSize(9).ItemsToPrune(1))
|
|
for i := 0; i < 5; i++ {
|
|
cache.Set(strconv.Itoa(i), i, time.Minute)
|
|
}
|
|
cache.SetMaxSize(3)
|
|
cache.SyncUpdates()
|
|
assert.Equal(t, cache.GetDropped(), 2)
|
|
assert.Equal(t, cache.Get("0"), nil)
|
|
assert.Equal(t, cache.Get("1"), nil)
|
|
assert.Equal(t, cache.Get("2").Value(), 2)
|
|
assert.Equal(t, cache.Get("3").Value(), 3)
|
|
assert.Equal(t, cache.Get("4").Value(), 4)
|
|
|
|
cache.Set("5", 5, time.Minute)
|
|
cache.SyncUpdates()
|
|
assert.Equal(t, cache.GetDropped(), 1)
|
|
assert.Equal(t, cache.Get("2"), nil)
|
|
assert.Equal(t, cache.Get("3").Value(), 3)
|
|
assert.Equal(t, cache.Get("4").Value(), 4)
|
|
assert.Equal(t, cache.Get("5").Value(), 5)
|
|
|
|
cache.SetMaxSize(10)
|
|
cache.Set("6", 6, time.Minute)
|
|
cache.SyncUpdates()
|
|
assert.Equal(t, cache.GetDropped(), 0)
|
|
assert.Equal(t, cache.Get("3").Value(), 3)
|
|
assert.Equal(t, cache.Get("4").Value(), 4)
|
|
assert.Equal(t, cache.Get("5").Value(), 5)
|
|
assert.Equal(t, cache.Get("6").Value(), 6)
|
|
}
|
|
|
|
func Test_CacheForEachFunc(t *testing.T) {
|
|
cache := New(Configure[int]().MaxSize(3).ItemsToPrune(1))
|
|
assert.List(t, forEachKeys[int](cache), []string{})
|
|
|
|
cache.Set("1", 1, time.Minute)
|
|
assert.List(t, forEachKeys(cache), []string{"1"})
|
|
|
|
cache.Set("2", 2, time.Minute)
|
|
cache.SyncUpdates()
|
|
assert.List(t, forEachKeys(cache), []string{"1", "2"})
|
|
|
|
cache.Set("3", 3, time.Minute)
|
|
cache.SyncUpdates()
|
|
assert.List(t, forEachKeys(cache), []string{"1", "2", "3"})
|
|
|
|
cache.Set("4", 4, time.Minute)
|
|
cache.SyncUpdates()
|
|
assert.List(t, forEachKeys(cache), []string{"2", "3", "4"})
|
|
|
|
cache.Set("stop", 5, time.Minute)
|
|
cache.SyncUpdates()
|
|
assert.DoesNotContain(t, forEachKeys(cache), "stop")
|
|
|
|
cache.Set("6", 6, time.Minute)
|
|
cache.SyncUpdates()
|
|
assert.DoesNotContain(t, forEachKeys(cache), "stop")
|
|
}
|
|
|
|
func Test_CachePrune(t *testing.T) {
|
|
maxSize := int64(500)
|
|
cache := New(Configure[string]().MaxSize(maxSize).ItemsToPrune(50))
|
|
epoch := 0
|
|
for i := 0; i < 10000; i++ {
|
|
epoch += 1
|
|
expired := make([]string, 0)
|
|
for i := 0; i < 50; i += 1 {
|
|
key := strconv.FormatInt(rand.Int63n(maxSize*20), 10)
|
|
item := cache.Get(key)
|
|
if item == nil || item.TTL() > 1*time.Minute {
|
|
expired = append(expired, key)
|
|
}
|
|
}
|
|
for _, key := range expired {
|
|
cache.Set(key, key, 5*time.Minute)
|
|
}
|
|
if epoch%500 == 0 {
|
|
assert.True(t, cache.GetSize() <= 500)
|
|
}
|
|
}
|
|
}
|
|
|
|
func Test_ConcurrentStop(t *testing.T) {
|
|
for i := 0; i < 100; i++ {
|
|
cache := New(Configure[string]())
|
|
r := func() {
|
|
for {
|
|
key := strconv.Itoa(int(rand.Int31n(100)))
|
|
switch rand.Int31n(3) {
|
|
case 0:
|
|
cache.Get(key)
|
|
case 1:
|
|
cache.Set(key, key, time.Minute)
|
|
case 2:
|
|
cache.Delete(key)
|
|
}
|
|
}
|
|
}
|
|
go r()
|
|
go r()
|
|
go r()
|
|
time.Sleep(time.Millisecond * 10)
|
|
cache.Stop()
|
|
}
|
|
}
|
|
|
|
func Test_ConcurrentClearAndSet(t *testing.T) {
|
|
for i := 0; i < 100; i++ {
|
|
var stop atomic.Bool
|
|
var wg sync.WaitGroup
|
|
|
|
cache := New(Configure[string]())
|
|
r := func() {
|
|
for !stop.Load() {
|
|
cache.Set("a", "a", time.Minute)
|
|
}
|
|
wg.Done()
|
|
}
|
|
go r()
|
|
wg.Add(1)
|
|
cache.Clear()
|
|
stop.Store(true)
|
|
wg.Wait()
|
|
time.Sleep(time.Millisecond)
|
|
cache.SyncUpdates()
|
|
|
|
known := make(map[string]struct{})
|
|
for node := cache.list.Head; node != nil; node = node.Next {
|
|
known[node.Value.key] = struct{}{}
|
|
}
|
|
|
|
for _, bucket := range cache.buckets {
|
|
for key := range bucket.lookup {
|
|
_, exists := known[key]
|
|
assert.True(t, exists)
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
type SizedItem struct {
|
|
id int
|
|
s int64
|
|
}
|
|
|
|
func (s *SizedItem) Size() int64 {
|
|
return s.s
|
|
}
|
|
|
|
func forEachKeys[T any](cache *Cache[T]) []string {
|
|
keys := make([]string, 0, 10)
|
|
cache.ForEachFunc(func(key string, i *Item[T]) bool {
|
|
if key == "stop" {
|
|
return false
|
|
}
|
|
keys = append(keys, key)
|
|
return true
|
|
})
|
|
sort.Strings(keys)
|
|
return keys
|
|
}
|