github.com/SagerNet/gvisor@v0.0.0-20210707092255-7731c139d75c/pkg/tcpip/network/arp/stats_test.go (about)

     1  // Copyright 2021 The gVisor Authors.
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //     http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  package arp
    16  
    17  import (
    18  	"reflect"
    19  	"testing"
    20  
    21  	"github.com/SagerNet/gvisor/pkg/tcpip"
    22  	"github.com/SagerNet/gvisor/pkg/tcpip/stack"
    23  	"github.com/SagerNet/gvisor/pkg/tcpip/testutil"
    24  )
    25  
    26  var _ stack.NetworkInterface = (*testInterface)(nil)
    27  
    28  type testInterface struct {
    29  	stack.NetworkInterface
    30  	nicID tcpip.NICID
    31  }
    32  
    33  func (t *testInterface) ID() tcpip.NICID {
    34  	return t.nicID
    35  }
    36  
    37  func TestMultiCounterStatsInitialization(t *testing.T) {
    38  	s := stack.New(stack.Options{
    39  		NetworkProtocols: []stack.NetworkProtocolFactory{NewProtocol},
    40  	})
    41  	proto := s.NetworkProtocolInstance(ProtocolNumber).(*protocol)
    42  	var nic testInterface
    43  	ep := proto.NewEndpoint(&nic, nil).(*endpoint)
    44  	// At this point, the Stack's stats and the NetworkEndpoint's stats are
    45  	// expected to be bound by a MultiCounterStat.
    46  	refStack := s.Stats()
    47  	refEP := ep.stats.localStats
    48  	if err := testutil.ValidateMultiCounterStats(reflect.ValueOf(&ep.stats.arp).Elem(), []reflect.Value{reflect.ValueOf(&refEP.ARP).Elem(), reflect.ValueOf(&refStack.ARP).Elem()}); err != nil {
    49  		t.Error(err)
    50  	}
    51  }