diff --git a/app/dns/server_test.go b/app/dns/server_test.go
deleted file mode 100644
index 4c23bf19..00000000
--- a/app/dns/server_test.go
+++ /dev/null
@@ -1,56 +0,0 @@
-package dns_test
-
-import (
-	"net"
-	"testing"
-
-	"v2ray.com/core/app"
-	"v2ray.com/core/app/dispatcher"
-	dispatchers "v2ray.com/core/app/dispatcher/impl"
-	. "v2ray.com/core/app/dns"
-	"v2ray.com/core/app/proxyman"
-	v2net "v2ray.com/core/common/net"
-	"v2ray.com/core/proxy"
-	"v2ray.com/core/proxy/freedom"
-	"v2ray.com/core/testing/assert"
-	"v2ray.com/core/transport/internet"
-)
-
-func TestDnsAdd(t *testing.T) {
-	assert := assert.On(t)
-
-	space := app.NewSpace()
-
-	outboundHandlerManager := proxyman.NewDefaultOutboundHandlerManager()
-	outboundHandlerManager.SetDefaultHandler(
-		freedom.NewFreedomConnection(
-			&freedom.Config{},
-			space,
-			&proxy.OutboundHandlerMeta{
-				Address: v2net.AnyIP,
-				StreamSettings: &internet.StreamConfig{
-					Network: v2net.Network_RawTCP,
-				},
-			}))
-	space.BindApp(proxyman.APP_ID_OUTBOUND_MANAGER, outboundHandlerManager)
-	space.BindApp(dispatcher.APP_ID, dispatchers.NewDefaultDispatcher(space))
-
-	domain := "local.v2ray.com"
-	server := NewCacheServer(space, &Config{
-		NameServers: []*v2net.Endpoint{{
-			Network: v2net.Network_UDP,
-			Address: &v2net.IPOrDomain{
-				Address: &v2net.IPOrDomain_Ip{
-					Ip: []byte{8, 8, 8, 8},
-				},
-			},
-			Port: 53,
-		}},
-	})
-	space.BindApp(APP_ID, server)
-	space.Initialize()
-
-	ips := server.Get(domain)
-	assert.Int(len(ips)).Equals(1)
-	assert.IP(ips[0].To4()).Equals(net.IP([]byte{127, 0, 0, 1}))
-}