df91803297
This method reduces the likelihood of a race condition where you can add a (tracked) item to the cache, and the item isn't the item you thought it was.
107 lines
3.5 KiB
Go
107 lines
3.5 KiB
Go
package ccache
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import (
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"strconv"
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"testing"
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"time"
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. "github.com/karlseguin/expect"
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)
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type SecondaryCacheTests struct{}
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func Test_SecondaryCache(t *testing.T) {
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Expectify(new(SecondaryCacheTests), t)
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}
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func (_ SecondaryCacheTests) GetsANonExistantValue() {
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cache := newLayered().GetOrCreateSecondaryCache("foo")
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Expect(cache).Not.To.Equal(nil)
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}
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func (_ SecondaryCacheTests) SetANewValue() {
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cache := newLayered()
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cache.Set("spice", "flow", "a value", time.Minute)
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sCache := cache.GetOrCreateSecondaryCache("spice")
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Expect(sCache.Get("flow").Value()).To.Equal("a value")
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Expect(sCache.Get("stop")).To.Equal(nil)
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}
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func (_ SecondaryCacheTests) ValueCanBeSeenInBothCaches1() {
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cache := newLayered()
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cache.Set("spice", "flow", "a value", time.Minute)
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sCache := cache.GetOrCreateSecondaryCache("spice")
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sCache.Set("orinoco", "another value", time.Minute)
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Expect(sCache.Get("orinoco").Value()).To.Equal("another value")
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Expect(cache.Get("spice", "orinoco").Value()).To.Equal("another value")
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}
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func (_ SecondaryCacheTests) ValueCanBeSeenInBothCaches2() {
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cache := newLayered()
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sCache := cache.GetOrCreateSecondaryCache("spice")
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sCache.Set("flow", "a value", time.Minute)
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Expect(sCache.Get("flow").Value()).To.Equal("a value")
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Expect(cache.Get("spice", "flow").Value()).To.Equal("a value")
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}
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func (_ SecondaryCacheTests) DeletesAreReflectedInBothCaches() {
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cache := newLayered()
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cache.Set("spice", "flow", "a value", time.Minute)
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cache.Set("spice", "sister", "ghanima", time.Minute)
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sCache := cache.GetOrCreateSecondaryCache("spice")
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cache.Delete("spice", "flow")
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Expect(cache.Get("spice", "flow")).To.Equal(nil)
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Expect(sCache.Get("flow")).To.Equal(nil)
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sCache.Delete("sister")
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Expect(cache.Get("spice", "sister")).To.Equal(nil)
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Expect(sCache.Get("sister")).To.Equal(nil)
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}
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func (_ SecondaryCacheTests) ReplaceDoesNothingIfKeyDoesNotExist() {
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cache := newLayered()
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sCache := cache.GetOrCreateSecondaryCache("spice")
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Expect(sCache.Replace("flow", "value-a")).To.Equal(false)
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Expect(cache.Get("spice", "flow")).To.Equal(nil)
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}
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func (_ SecondaryCacheTests) ReplaceUpdatesTheValue() {
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cache := newLayered()
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cache.Set("spice", "flow", "value-a", time.Minute)
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sCache := cache.GetOrCreateSecondaryCache("spice")
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Expect(sCache.Replace("flow", "value-b")).To.Equal(true)
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Expect(cache.Get("spice", "flow").Value().(string)).To.Equal("value-b")
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}
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func (_ SecondaryCacheTests) FetchReturnsAnExistingValue() {
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cache := newLayered()
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cache.Set("spice", "flow", "value-a", time.Minute)
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sCache := cache.GetOrCreateSecondaryCache("spice")
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val, _ := sCache.Fetch("flow", time.Minute, func() (interface{}, error) { return "a fetched value", nil })
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Expect(val.Value().(string)).To.Equal("value-a")
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}
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func (_ SecondaryCacheTests) FetchReturnsANewValue() {
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cache := newLayered()
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sCache := cache.GetOrCreateSecondaryCache("spice")
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val, _ := sCache.Fetch("flow", time.Minute, func() (interface{}, error) { return "a fetched value", nil })
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Expect(val.Value().(string)).To.Equal("a fetched value")
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}
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func (_ SecondaryCacheTests) TrackerDoesNotCleanupHeldInstance() {
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cache := Layered(Configure().ItemsToPrune(10).Track())
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for i := 0; i < 10; i++ {
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cache.Set(strconv.Itoa(i), "a", i, time.Minute)
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}
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sCache := cache.GetOrCreateSecondaryCache("0")
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item := sCache.TrackingGet("a")
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time.Sleep(time.Millisecond * 10)
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gcLayeredCache(cache)
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Expect(cache.Get("0", "a").Value()).To.Equal(0)
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Expect(cache.Get("1", "a")).To.Equal(nil)
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item.Release()
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gcLayeredCache(cache)
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Expect(cache.Get("0", "a")).To.Equal(nil)
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}
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