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|
package cache
import (
"context"
"testing"
"time"
)
func TestDeletedCache(t *testing.T) {
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
nc := NewContext[string, int](ctx)
key := "key"
nc.Set(key, 1, WithExpiration(-time.Second))
_, ok := nc.cache.Get(key)
if !ok {
t.Fatal("want true")
}
nc.DeleteExpired()
_, ok = nc.cache.Get(key)
if ok {
t.Fatal("want false")
}
}
func TestDeleteExpired(t *testing.T) {
now := time.Now()
restore := func() {
nowFunc = time.Now
}
t.Run("normal", func(t *testing.T) {
defer restore()
c := New[string, int]()
c.Set("0", 0)
c.Set("1", 10, WithExpiration(10*time.Millisecond))
c.Set("2", 20, WithExpiration(20*time.Millisecond))
c.Set("3", 30, WithExpiration(30*time.Millisecond))
c.Set("4", 40, WithExpiration(40*time.Millisecond))
c.Set("5", 50)
maxItems := c.Len()
expItems := 2
for i := 0; i <= maxItems; i++ {
nowFunc = func() time.Time {
// Advance time to expire some items
advanced := time.Duration(i * 10)
return now.Add(advanced * time.Millisecond).Add(time.Millisecond)
}
c.DeleteExpired()
got := c.Len()
want := max(maxItems-i, expItems)
if want != got {
t.Errorf("want %d items but got %d", want, got)
}
}
})
t.Run("with remove", func(t *testing.T) {
defer restore()
c := New[string, int]()
c.Set("0", 0)
c.Set("1", 10, WithExpiration(10*time.Millisecond))
c.Set("2", 20, WithExpiration(20*time.Millisecond))
c.Delete("1")
nowFunc = func() time.Time {
return now.Add(30 * time.Millisecond).Add(time.Millisecond)
}
c.DeleteExpired()
keys := c.Keys()
want := 1
if want != len(keys) {
t.Errorf("want %d items but got %d", want, len(keys))
}
})
t.Run("with update", func(t *testing.T) {
defer restore()
c := New[string, int]()
c.Set("0", 0)
c.Set("1", 10, WithExpiration(10*time.Millisecond))
c.Set("2", 20, WithExpiration(20*time.Millisecond))
c.Set("1", 30, WithExpiration(30*time.Millisecond)) // update
maxItems := c.Len()
nowFunc = func() time.Time {
return now.Add(10 * time.Millisecond).Add(time.Millisecond)
}
c.DeleteExpired()
got1 := c.Len()
want1 := maxItems
if want1 != got1 {
t.Errorf("want1 %d items but got1 %d", want1, got1)
}
nowFunc = func() time.Time {
return now.Add(30 * time.Millisecond).Add(time.Millisecond)
}
c.DeleteExpired()
got2 := c.Len()
want2 := 1
if want2 != got2 {
t.Errorf("want2 %d items but got2 %d", want2, got2)
}
})
t.Run("issue #51", func(t *testing.T) {
defer restore()
c := New[string, int]()
c.Set("1", 10, WithExpiration(10*time.Millisecond))
c.Set("2", 20, WithExpiration(20*time.Millisecond))
c.Set("1", 30, WithExpiration(100*time.Millisecond)) // expected do not expired key "1"
nowFunc = func() time.Time {
return now.Add(30 * time.Millisecond).Add(time.Millisecond)
}
c.DeleteExpired()
got := c.Len()
if want := 1; want != got {
t.Errorf("want %d items but got %d", want, got)
}
})
}
func max(x, y int) int {
if x < y {
return y
}
return x
}
|
