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gemcache_test.go
41 lines (35 loc) · 860 Bytes
/
gemcache_test.go
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package gemcache
import (
"fmt"
"testing"
)
var db = map[string]string{
"Tom": "630",
"Jack": "589",
"Sam": "567",
}
func TestGet(t *testing.T) {
loadCounts := make(map[string]int, len(db))
cache := NewGroup("scores", 2<<10, GetterFunc(
func(key string) ([]byte, error) {
if v, ok := db[key]; ok {
if _, ok := loadCounts[key]; !ok {
loadCounts[key] = 0
}
loadCounts[key] += 1
return []byte(v), nil
}
return nil, fmt.Errorf("%s not exist", key)
}))
for k, v := range db {
if view, err := cache.Get(k); err != nil || view.String() != v {
t.Fatal("failed to get value of Tom")
}
if _, err := cache.Get(k); err != nil || loadCounts[k] > 1 {
t.Fatalf("cache %s miss", k)
}
}
if view, err := cache.Get("unknown"); err == nil {
t.Fatalf("the value of unknow should be empty, but %s got", view)
}
}