go.uber.org/yarpc@v1.72.1/yarpctest/fake_transport_test.go (about)

     1  // Copyright (c) 2022 Uber Technologies, Inc.
     2  //
     3  // Permission is hereby granted, free of charge, to any person obtaining a copy
     4  // of this software and associated documentation files (the "Software"), to deal
     5  // in the Software without restriction, including without limitation the rights
     6  // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
     7  // copies of the Software, and to permit persons to whom the Software is
     8  // furnished to do so, subject to the following conditions:
     9  //
    10  // The above copyright notice and this permission notice shall be included in
    11  // all copies or substantial portions of the Software.
    12  //
    13  // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
    14  // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
    15  // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
    16  // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
    17  // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
    18  // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
    19  // THE SOFTWARE.
    20  
    21  package yarpctest_test
    22  
    23  import (
    24  	"fmt"
    25  	"sync"
    26  	"testing"
    27  
    28  	"go.uber.org/yarpc/api/peer"
    29  	"go.uber.org/yarpc/yarpctest"
    30  )
    31  
    32  type testPeer struct {
    33  	id string
    34  }
    35  
    36  type testSubscriber struct{}
    37  
    38  func (s testSubscriber) NotifyStatusChanged(peer.Identifier) {}
    39  
    40  func (p testPeer) Identifier() string {
    41  	return p.id
    42  }
    43  
    44  func TestFakeTransport(t *testing.T) {
    45  	trans := yarpctest.NewFakeTransport()
    46  	trans.Start()
    47  
    48  	wait := make(chan struct{})
    49  	var wg sync.WaitGroup
    50  
    51  	for i := 0; i < 100; i++ {
    52  		wg.Add(1)
    53  
    54  		go func(i int) {
    55  			p := &testPeer{id: fmt.Sprintf("foo %d", i%10)}
    56  			<-wait
    57  			trans.Peer(p)
    58  
    59  			wg.Done()
    60  		}(i)
    61  	}
    62  	close(wait)
    63  	wg.Wait()
    64  }
    65  
    66  func TestRetainReleasePeer(t *testing.T) {
    67  	trans := yarpctest.NewFakeTransport()
    68  	trans.Start()
    69  
    70  	wait := make(chan struct{})
    71  	var wg sync.WaitGroup
    72  
    73  	for i := 0; i < 100; i++ {
    74  		wg.Add(1)
    75  
    76  		go func(i int) {
    77  			p := &testPeer{id: fmt.Sprintf("foo %d", i%10)}
    78  			s := &testSubscriber{}
    79  			<-wait
    80  			myPeer := trans.Peer(p)
    81  			trans.RetainPeer(myPeer, s)
    82  			trans.ReleasePeer(myPeer, s)
    83  
    84  			wg.Done()
    85  		}(i)
    86  	}
    87  	close(wait)
    88  	wg.Wait()
    89  }