diff --git a/backend/_example/memory_store/accessor/admin_test.go b/backend/_example/memory_store/accessor/admin_test.go
index d55b255b..3aedd629 100644
--- a/backend/_example/memory_store/accessor/admin_test.go
+++ b/backend/_example/memory_store/accessor/admin_test.go
@@ -47,9 +47,11 @@ func TestMemAdmin_Get(t *testing.T) {
 
 	admins, err = ms.Admins("no-site-in-db")
 	assert.EqualError(t, err, "site no-site-in-db not found")
+	assert.Empty(t, admins)
 
 	email, err = ms.Email("no-site-in-db")
 	assert.EqualError(t, err, "site no-site-in-db not found")
+	assert.Empty(t, email)
 
 	enabled, err := ms.Enabled("site1")
 	assert.NoError(t, err)
@@ -61,6 +63,7 @@ func TestMemAdmin_Get(t *testing.T) {
 
 	enabled, err = ms.Enabled("no-site-in-db")
 	assert.EqualError(t, err, "site no-site-in-db not found")
+	assert.False(t, enabled)
 
 	err = ms.OnEvent("site1", admin.EvCreate)
 	assert.NoError(t, err)
diff --git a/backend/_example/memory_store/accessor/data_test.go b/backend/_example/memory_store/accessor/data_test.go
index 9fc84718..fa24036d 100644
--- a/backend/_example/memory_store/accessor/data_test.go
+++ b/backend/_example/memory_store/accessor/data_test.go
@@ -425,6 +425,7 @@ func TestMemData_FlagReadOnlyPost(t *testing.T) {
 		Update: engine.FlagTrue}
 	val, err = b.Flag(req)
 	assert.NoError(t, err)
+	assert.True(t, val)
 	req = engine.FlagRequest{Locator: store.Locator{SiteID: "radio-t", URL: "url-1"}, Flag: engine.ReadOnly}
 	val, err = b.Flag(req)
 	assert.NoError(t, err)
@@ -546,9 +547,9 @@ func TestMemData_FlagListBlocked(t *testing.T) {
 	assert.NoError(t, err)
 
 	blockedList := toBlocked(vv)
-	var blockedIds []string
-	for _, x := range blockedList {
-		blockedIds = append(blockedIds, x.ID)
+	var blockedIds = make([]string, len(blockedList))
+	for i, x := range blockedList {
+		blockedIds[i] = x.ID
 	}
 	require.Equal(t, 2, len(blockedList), b.metaUsers)
 	assert.ElementsMatch(t, []string{"user1", "user2"}, blockedIds)
diff --git a/backend/_example/memory_store/server/admin_test.go b/backend/_example/memory_store/server/admin_test.go
index 4719f425..380fa00c 100644
--- a/backend/_example/memory_store/server/admin_test.go
+++ b/backend/_example/memory_store/server/admin_test.go
@@ -19,7 +19,7 @@ import (
 )
 
 func TestRPC_admKeyHndl(t *testing.T) {
-	_, port, teardown := prepTestStore(t)
+	port, teardown := prepTestStore(t)
 	defer teardown()
 	api := fmt.Sprintf("http://localhost:%d/test", port)
 
@@ -30,7 +30,7 @@ func TestRPC_admKeyHndl(t *testing.T) {
 }
 
 func TestRPC_admAdminsHndl(t *testing.T) {
-	_, port, teardown := prepTestStore(t)
+	port, teardown := prepTestStore(t)
 	defer teardown()
 	api := fmt.Sprintf("http://localhost:%d/test", port)
 
@@ -44,7 +44,7 @@ func TestRPC_admAdminsHndl(t *testing.T) {
 }
 
 func TestRPC_admEmailHndl(t *testing.T) {
-	_, port, teardown := prepTestStore(t)
+	port, teardown := prepTestStore(t)
 	defer teardown()
 	api := fmt.Sprintf("http://localhost:%d/test", port)
 
@@ -58,7 +58,7 @@ func TestRPC_admEmailHndl(t *testing.T) {
 }
 
 func TestRPC_admEnabledHndl(t *testing.T) {
-	_, port, teardown := prepTestStore(t)
+	port, teardown := prepTestStore(t)
 	defer teardown()
 	api := fmt.Sprintf("http://localhost:%d/test", port)
 
@@ -76,7 +76,7 @@ func TestRPC_admEnabledHndl(t *testing.T) {
 }
 
 func TestRPC_admEventHndl(t *testing.T) {
-	_, port, teardown := prepTestStore(t)
+	port, teardown := prepTestStore(t)
 	defer teardown()
 	api := fmt.Sprintf("http://localhost:%d/test", port)
 
diff --git a/backend/_example/memory_store/server/data_test.go b/backend/_example/memory_store/server/data_test.go
index c4deb5cb..baefa27b 100644
--- a/backend/_example/memory_store/server/data_test.go
+++ b/backend/_example/memory_store/server/data_test.go
@@ -21,7 +21,7 @@ import (
 )
 
 func TestRPC_createHndl(t *testing.T) {
-	_, port, teardown := prepTestStore(t)
+	port, teardown := prepTestStore(t)
 	defer teardown()
 	api := fmt.Sprintf("http://localhost:%d/test", port)
 
@@ -33,7 +33,7 @@ func TestRPC_createHndl(t *testing.T) {
 }
 
 func TestRPC_findHndl(t *testing.T) {
-	_, port, teardown := prepTestStore(t)
+	port, teardown := prepTestStore(t)
 	defer teardown()
 	api := fmt.Sprintf("http://localhost:%d/test", port)
 
@@ -56,7 +56,7 @@ func TestRPC_findHndl(t *testing.T) {
 }
 
 func TestRPC_getHndl(t *testing.T) {
-	_, port, teardown := prepTestStore(t)
+	port, teardown := prepTestStore(t)
 	defer teardown()
 	api := fmt.Sprintf("http://localhost:%d/test", port)
 
@@ -80,7 +80,7 @@ func TestRPC_getHndl(t *testing.T) {
 }
 
 func TestRPC_updateHndl(t *testing.T) {
-	_, port, teardown := prepTestStore(t)
+	port, teardown := prepTestStore(t)
 	defer teardown()
 	api := fmt.Sprintf("http://localhost:%d/test", port)
 
@@ -108,7 +108,7 @@ func TestRPC_updateHndl(t *testing.T) {
 }
 
 func TestRPC_countHndl(t *testing.T) {
-	_, port, teardown := prepTestStore(t)
+	port, teardown := prepTestStore(t)
 	defer teardown()
 	api := fmt.Sprintf("http://localhost:%d/test", port)
 
@@ -130,7 +130,7 @@ func TestRPC_countHndl(t *testing.T) {
 }
 
 func TestRPC_infoHndl(t *testing.T) {
-	_, port, teardown := prepTestStore(t)
+	port, teardown := prepTestStore(t)
 	defer teardown()
 	api := fmt.Sprintf("http://localhost:%d/test", port)
 
@@ -151,7 +151,7 @@ func TestRPC_infoHndl(t *testing.T) {
 }
 
 func TestRPC_flagHndl(t *testing.T) {
-	_, port, teardown := prepTestStore(t)
+	port, teardown := prepTestStore(t)
 	defer teardown()
 	api := fmt.Sprintf("http://localhost:%d/test", port)
 
@@ -186,7 +186,7 @@ func TestRPC_flagHndl(t *testing.T) {
 }
 
 func TestRPC_listFlagsHndl(t *testing.T) {
-	_, port, teardown := prepTestStore(t)
+	port, teardown := prepTestStore(t)
 	defer teardown()
 	api := fmt.Sprintf("http://localhost:%d/test", port)
 
@@ -220,7 +220,7 @@ func TestRPC_listFlagsHndl(t *testing.T) {
 }
 
 func TestRPC_userDetailHndl(t *testing.T) {
-	_, port, teardown := prepTestStore(t)
+	port, teardown := prepTestStore(t)
 	defer teardown()
 	api := fmt.Sprintf("http://localhost:%d/test", port)
 
@@ -273,7 +273,7 @@ func TestRPC_userDetailHndl(t *testing.T) {
 }
 
 func TestRPC_deleteHndl(t *testing.T) {
-	_, port, teardown := prepTestStore(t)
+	port, teardown := prepTestStore(t)
 	defer teardown()
 	api := fmt.Sprintf("http://localhost:%d/test", port)
 
@@ -296,7 +296,7 @@ func TestRPC_deleteHndl(t *testing.T) {
 }
 
 func TestRPC_closeHndl(t *testing.T) {
-	_, port, teardown := prepTestStore(t)
+	port, teardown := prepTestStore(t)
 	defer teardown()
 	api := fmt.Sprintf("http://localhost:%d/test", port)
 
diff --git a/backend/_example/memory_store/server/image_test.go b/backend/_example/memory_store/server/image_test.go
index 18b94dcb..d264f3ec 100644
--- a/backend/_example/memory_store/server/image_test.go
+++ b/backend/_example/memory_store/server/image_test.go
@@ -51,7 +51,7 @@ func gopherPNGBytes() []byte {
 }
 
 func TestRPC_imgLoadHndl(t *testing.T) {
-	_, port, teardown := prepTestStore(t)
+	port, teardown := prepTestStore(t)
 	defer teardown()
 	api := fmt.Sprintf("http://localhost:%d/test", port)
 
@@ -78,7 +78,7 @@ func TestRPC_imgLoadHndl(t *testing.T) {
 	assert.Equal(t, gopherPNGBytes(), img)
 
 	// cleanup
-	err = ri.Cleanup(nil, time.Second)
+	err = ri.Cleanup(context.TODO(), time.Second)
 	assert.NoError(t, err)
 
 	// load after cleanup
@@ -89,7 +89,7 @@ func TestRPC_imgLoadHndl(t *testing.T) {
 }
 
 func TestRPC_imgCommitHndlFail(t *testing.T) {
-	_, port, teardown := prepTestStore(t)
+	port, teardown := prepTestStore(t)
 	defer teardown()
 	api := fmt.Sprintf("http://localhost:%d/test", port)
 
@@ -99,7 +99,7 @@ func TestRPC_imgCommitHndlFail(t *testing.T) {
 }
 
 func TestRPC_imgCleanupHndl(t *testing.T) {
-	_, port, teardown := prepTestStore(t)
+	port, teardown := prepTestStore(t)
 	defer teardown()
 	api := fmt.Sprintf("http://localhost:%d/test", port)
 
diff --git a/backend/_example/memory_store/server/rpc_test.go b/backend/_example/memory_store/server/rpc_test.go
index 5ea06cf7..d8cb9ca2 100644
--- a/backend/_example/memory_store/server/rpc_test.go
+++ b/backend/_example/memory_store/server/rpc_test.go
@@ -43,11 +43,11 @@ func waitForHTTPServerStart(port int) {
 	}
 }
 
-func prepTestStore(t *testing.T) (s *RPC, port int, teardown func()) {
+func prepTestStore(t *testing.T) (port int, teardown func()) {
 	mg := accessor.NewMemData()
 	adm := accessor.NewMemAdminStore("secret")
 	img := accessor.NewMemImageStore()
-	s = NewRPC(mg, adm, img, &jrpc.Server{API: "/test", Logger: jrpc.NoOpLogger})
+	s := NewRPC(mg, adm, img, &jrpc.Server{API: "/test", Logger: jrpc.NoOpLogger})
 
 	admRec := accessor.AdminRec{
 		SiteID:  "test-site",
@@ -68,7 +68,7 @@ func prepTestStore(t *testing.T) (s *RPC, port int, teardown func()) {
 
 	waitForHTTPServerStart(port)
 
-	return s, port, func() {
+	return port, func() {
 		require.NoError(t, s.Shutdown())
 	}
 }