96 lines
1.7 KiB
Go
96 lines
1.7 KiB
Go
package mru
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import (
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"testing"
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"time"
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"github.com/benbjohnson/clock"
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)
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func TestBasicCacheEviction(t *testing.T) {
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mock := clock.NewMock()
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c := New(2)
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c.clock = mock
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if err := c.ConsistencyCheck(); err != nil {
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t.Fatal(err)
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}
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if c.Len() != 0 {
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t.Fatal("cache should have size 0")
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}
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c.evict()
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if err := c.ConsistencyCheck(); err != nil {
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t.Fatal(err)
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}
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c.Store("raven", 1)
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if err := c.ConsistencyCheck(); err != nil {
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t.Fatal(err)
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}
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if len(c.store) != 1 {
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t.Fatalf("store should have length=1, have length=%d", len(c.store))
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}
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mock.Add(time.Second)
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c.Store("owl", 2)
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if err := c.ConsistencyCheck(); err != nil {
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t.Fatal(err)
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}
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if len(c.store) != 2 {
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t.Fatalf("store should have length=2, have length=%d", len(c.store))
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}
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mock.Add(time.Second)
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c.Store("goat", 3)
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if err := c.ConsistencyCheck(); err != nil {
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t.Fatal(err)
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}
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if len(c.store) != 2 {
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t.Fatalf("store should have length=2, have length=%d", len(c.store))
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}
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mock.Add(time.Second)
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v, ok := c.Get("owl")
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if !ok {
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t.Fatal("store should have an entry for owl")
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}
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if err := c.ConsistencyCheck(); err != nil {
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t.Fatal(err)
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}
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itm, ok := v.(int)
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if !ok {
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t.Fatalf("stored item is not an int; have %T", v)
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}
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if err := c.ConsistencyCheck(); err != nil {
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t.Fatal(err)
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}
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if itm != 2 {
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t.Fatalf("stored item should be 2, have %d", itm)
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}
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mock.Add(time.Second)
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c.Store("elk", 4)
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if err := c.ConsistencyCheck(); err != nil {
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t.Fatal(err)
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}
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if !c.Has("elk") {
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t.Fatal("store should contain an entry for 'elk'")
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}
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if !c.Has("owl") {
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t.Fatal("store should contain an entry for 'owl'")
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}
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if c.Has("goat") {
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t.Fatal("store should not contain an entry for 'goat'")
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}
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}
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