mirror of
https://github.com/SagerNet/sing.git
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113 lines
2.3 KiB
Go
113 lines
2.3 KiB
Go
package cache_test
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import (
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"testing"
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"time"
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"github.com/sagernet/sing/common/cache"
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"github.com/stretchr/testify/require"
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)
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func TestLRUCache(t *testing.T) {
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t.Run("basic operations", func(t *testing.T) {
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t.Parallel()
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c := cache.New[string, int]()
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c.Store("key1", 1)
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value, exists := c.Load("key1")
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require.True(t, exists)
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require.Equal(t, 1, value)
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value, exists = c.Load("missing")
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require.False(t, exists)
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require.Zero(t, value)
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c.Delete("key1")
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_, exists = c.Load("key1")
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require.False(t, exists)
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})
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t.Run("max size", func(t *testing.T) {
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t.Parallel()
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c := cache.New[string, int](cache.WithSize[string, int](2))
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c.Store("key1", 1)
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c.Store("key2", 2)
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c.Store("key3", 3)
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_, exists := c.Load("key1")
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require.False(t, exists)
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value, exists := c.Load("key2")
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require.True(t, exists)
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require.Equal(t, 2, value)
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})
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t.Run("expiration", func(t *testing.T) {
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t.Parallel()
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c := cache.New[string, int](cache.WithAge[string, int](1))
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c.Store("key1", 1)
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value, exists := c.Load("key1")
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require.True(t, exists)
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require.Equal(t, 1, value)
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time.Sleep(time.Second * 2)
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value, exists = c.Load("key1")
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require.False(t, exists)
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require.Zero(t, value)
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})
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t.Run("clear", func(t *testing.T) {
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t.Parallel()
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evicted := make(map[string]int)
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c := cache.New[string, int](
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cache.WithEvict[string, int](func(key string, value int) {
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evicted[key] = value
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}),
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)
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c.Store("key1", 1)
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c.Store("key2", 2)
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c.Clear()
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require.Equal(t, map[string]int{"key1": 1, "key2": 2}, evicted)
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_, exists := c.Load("key1")
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require.False(t, exists)
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})
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t.Run("load or store", func(t *testing.T) {
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t.Parallel()
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c := cache.New[string, int]()
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value, loaded := c.LoadOrStore("key1", func() int { return 1 })
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require.False(t, loaded)
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require.Equal(t, 1, value)
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value, loaded = c.LoadOrStore("key1", func() int { return 2 })
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require.True(t, loaded)
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require.Equal(t, 1, value)
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})
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t.Run("update age on get", func(t *testing.T) {
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t.Parallel()
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c := cache.New[string, int](
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cache.WithAge[string, int](5),
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cache.WithUpdateAgeOnGet[string, int](),
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)
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c.Store("key1", 1)
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time.Sleep(time.Second * 3)
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_, exists := c.Load("key1")
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require.True(t, exists)
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time.Sleep(time.Second * 3)
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_, exists = c.Load("key1")
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require.True(t, exists)
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})
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}
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