Files
grafana/pkg/infra/distcache/distcache_test.go
2019-03-08 09:09:27 +01:00

96 lines
2.4 KiB
Go

package distcache
import (
"encoding/gob"
"testing"
"time"
"github.com/bmizerany/assert"
"github.com/grafana/grafana/pkg/services/sqlstore"
)
type CacheableStruct struct {
String string
Int64 int64
}
func init() {
gob.Register(CacheableStruct{})
}
func createTestClient(t *testing.T, name string) cacheStorage {
t.Helper()
sqlstore := sqlstore.InitTestDB(t)
return createClient(CacheOpts{name: name}, sqlstore)
}
func TestAllCacheClients(t *testing.T) {
clients := []string{"database", "redis"} // add redis, memcache, memory
for _, v := range clients {
client := createTestClient(t, v)
CanPutGetAndDeleteCachedObjects(t, v, client)
CanNotFetchExpiredItems(t, v, client)
CanSetInfiniteCacheExpiration(t, v, client)
}
}
func CanPutGetAndDeleteCachedObjects(t *testing.T, name string, client cacheStorage) {
cacheableStruct := CacheableStruct{String: "hej", Int64: 2000}
err := client.Put("key", cacheableStruct, 0)
assert.Equal(t, err, nil)
data, err := client.Get("key")
s, ok := data.(CacheableStruct)
assert.Equal(t, ok, true)
assert.Equal(t, s.String, "hej")
assert.Equal(t, s.Int64, int64(2000))
err = client.Delete("key")
assert.Equal(t, err, nil)
_, err = client.Get("key")
assert.Equal(t, err, ErrCacheItemNotFound)
}
func CanNotFetchExpiredItems(t *testing.T, name string, client cacheStorage) {
if name == "redis" {
t.Skip() //this test does not work with redis since it uses its own getTime fn
}
cacheableStruct := CacheableStruct{String: "hej", Int64: 2000}
// insert cache item one day back
getTime = func() time.Time { return time.Now().AddDate(0, 0, -2) }
err := client.Put("key", cacheableStruct, 10000*time.Second)
assert.Equal(t, err, nil)
// should not be able to read that value since its expired
getTime = time.Now
_, err = client.Get("key")
assert.Equal(t, err, ErrCacheItemNotFound)
}
func CanSetInfiniteCacheExpiration(t *testing.T, name string, client cacheStorage) {
cacheableStruct := CacheableStruct{String: "hej", Int64: 2000}
// insert cache item one day back
getTime = func() time.Time { return time.Now().AddDate(0, 0, -2) }
err := client.Put("key", cacheableStruct, 0)
assert.Equal(t, err, nil)
// should not be able to read that value since its expired
getTime = time.Now
data, err := client.Get("key")
s, ok := data.(CacheableStruct)
assert.Equal(t, ok, true)
assert.Equal(t, s.String, "hej")
assert.Equal(t, s.Int64, int64(2000))
}