diff --git a/server/store/middleware/infohash/blacklist.go b/server/store/middleware/infohash/blacklist.go
index 47c4eef..3595748 100644
--- a/server/store/middleware/infohash/blacklist.go
+++ b/server/store/middleware/infohash/blacklist.go
@@ -13,17 +13,22 @@ import (
 func init() {
 	tracker.RegisterAnnounceMiddleware("infohash_blacklist", blacklistAnnounceInfohash)
 	tracker.RegisterScrapeMiddlewareConstructor("infohash_blacklist", blacklistScrapeInfohash)
+	mustGetStore = func() store.StringStore {
+		return store.MustGetStore()
+	}
 }
 
 // ErrBlockedInfohash is returned by a middleware if any of the infohashes
 // contained in an announce or scrape are disallowed.
 var ErrBlockedInfohash = tracker.ClientError("disallowed infohash")
 
+var mustGetStore func() store.StringStore
+
 // blacklistAnnounceInfohash provides a middleware that only allows announces
 // for infohashes that are not stored in a StringStore.
 func blacklistAnnounceInfohash(next tracker.AnnounceHandler) tracker.AnnounceHandler {
 	return func(cfg *chihaya.TrackerConfig, req *chihaya.AnnounceRequest, resp *chihaya.AnnounceResponse) (err error) {
-		blacklisted, err := store.MustGetStore().HasString(PrefixInfohash + string(req.InfoHash))
+		blacklisted, err := mustGetStore().HasString(PrefixInfohash + string(req.InfoHash))
 		if err != nil {
 			return err
 		} else if blacklisted {
@@ -63,7 +68,7 @@ func blacklistScrapeInfohash(c chihaya.MiddlewareConfig) (tracker.ScrapeMiddlewa
 func blacklistFilterScrape(next tracker.ScrapeHandler) tracker.ScrapeHandler {
 	return func(cfg *chihaya.TrackerConfig, req *chihaya.ScrapeRequest, resp *chihaya.ScrapeResponse) (err error) {
 		blacklisted := false
-		storage := store.MustGetStore()
+		storage := mustGetStore()
 		infohashes := req.InfoHashes
 
 		for i, ih := range infohashes {
@@ -84,7 +89,7 @@ func blacklistFilterScrape(next tracker.ScrapeHandler) tracker.ScrapeHandler {
 func blacklistBlockScrape(next tracker.ScrapeHandler) tracker.ScrapeHandler {
 	return func(cfg *chihaya.TrackerConfig, req *chihaya.ScrapeRequest, resp *chihaya.ScrapeResponse) (err error) {
 		blacklisted := false
-		storage := store.MustGetStore()
+		storage := mustGetStore()
 
 		for _, ih := range req.InfoHashes {
 			blacklisted, err = storage.HasString(PrefixInfohash + string(ih))
diff --git a/server/store/middleware/infohash/blacklist_test.go b/server/store/middleware/infohash/blacklist_test.go
index 32a334a..cc06906 100644
--- a/server/store/middleware/infohash/blacklist_test.go
+++ b/server/store/middleware/infohash/blacklist_test.go
@@ -10,38 +10,42 @@ import (
 	"github.com/stretchr/testify/assert"
 
 	"github.com/chihaya/chihaya"
-	"github.com/chihaya/chihaya/server"
 	"github.com/chihaya/chihaya/server/store"
 	"github.com/chihaya/chihaya/tracker"
-
-	_ "github.com/chihaya/chihaya/server/store/memory"
 )
 
-var srv server.Server
+type storeMock struct {
+	strings map[string]struct{}
+}
+
+func (ss *storeMock) PutString(s string) error {
+	ss.strings[s] = struct{}{}
+
+	return nil
+}
+
+func (ss *storeMock) HasString(s string) (bool, error) {
+	_, ok := ss.strings[s]
+
+	return ok, nil
+}
+
+func (ss *storeMock) RemoveString(s string) error {
+	delete(ss.strings, s)
+
+	return nil
+}
+
+var mock store.StringStore = &storeMock{
+	strings: make(map[string]struct{}),
+}
 
 func TestASetUp(t *testing.T) {
-	serverConfig := chihaya.ServerConfig{
-		Name: "store",
-		Config: store.Config{
-			Addr: "localhost:6880",
-			StringStore: store.DriverConfig{
-				Name: "memory",
-			},
-			IPStore: store.DriverConfig{
-				Name: "memory",
-			},
-			PeerStore: store.DriverConfig{
-				Name: "memory",
-			},
-		},
+	mustGetStore = func() store.StringStore {
+		return mock
 	}
 
-	var err error
-	srv, err = server.New(&serverConfig, &tracker.Tracker{})
-	assert.Nil(t, err)
-	srv.Start()
-
-	store.MustGetStore().PutString(PrefixInfohash + "abc")
+	mustGetStore().PutString(PrefixInfohash + "abc")
 }
 
 func TestBlacklistAnnounceMiddleware(t *testing.T) {
diff --git a/server/store/middleware/infohash/whitelist.go b/server/store/middleware/infohash/whitelist.go
index 53e425f..85dec0c 100644
--- a/server/store/middleware/infohash/whitelist.go
+++ b/server/store/middleware/infohash/whitelist.go
@@ -6,7 +6,6 @@ package infohash
 
 import (
 	"github.com/chihaya/chihaya"
-	"github.com/chihaya/chihaya/server/store"
 	"github.com/chihaya/chihaya/tracker"
 )
 
@@ -22,7 +21,7 @@ const PrefixInfohash = "ih-"
 // for infohashes that are not stored in a StringStore
 func whitelistAnnounceInfohash(next tracker.AnnounceHandler) tracker.AnnounceHandler {
 	return func(cfg *chihaya.TrackerConfig, req *chihaya.AnnounceRequest, resp *chihaya.AnnounceResponse) (err error) {
-		whitelisted, err := store.MustGetStore().HasString(PrefixInfohash + string(req.InfoHash))
+		whitelisted, err := mustGetStore().HasString(PrefixInfohash + string(req.InfoHash))
 
 		if err != nil {
 			return err
@@ -62,7 +61,7 @@ func whitelistScrapeInfohash(c chihaya.MiddlewareConfig) (tracker.ScrapeMiddlewa
 func whitelistFilterScrape(next tracker.ScrapeHandler) tracker.ScrapeHandler {
 	return func(cfg *chihaya.TrackerConfig, req *chihaya.ScrapeRequest, resp *chihaya.ScrapeResponse) (err error) {
 		whitelisted := false
-		storage := store.MustGetStore()
+		storage := mustGetStore()
 		infohashes := req.InfoHashes
 
 		for i, ih := range infohashes {
@@ -83,7 +82,7 @@ func whitelistFilterScrape(next tracker.ScrapeHandler) tracker.ScrapeHandler {
 func whitelistBlockScrape(next tracker.ScrapeHandler) tracker.ScrapeHandler {
 	return func(cfg *chihaya.TrackerConfig, req *chihaya.ScrapeRequest, resp *chihaya.ScrapeResponse) (err error) {
 		whitelisted := false
-		storage := store.MustGetStore()
+		storage := mustGetStore()
 
 		for _, ih := range req.InfoHashes {
 			whitelisted, err = storage.HasString(PrefixInfohash + string(ih))
diff --git a/server/store/middleware/infohash/whitelist_test.go b/server/store/middleware/infohash/whitelist_test.go
index 728846c..f958638 100644
--- a/server/store/middleware/infohash/whitelist_test.go
+++ b/server/store/middleware/infohash/whitelist_test.go
@@ -94,7 +94,3 @@ func TestWhitelistScrapeMiddlewareFilter(t *testing.T) {
 	assert.Nil(t, err)
 	assert.Equal(t, []chihaya.InfoHash{chihaya.InfoHash("abc")}, req.InfoHashes)
 }
-
-func TestZTearDown(t *testing.T) {
-	srv.Stop()
-}