github.com/gdamore/mangos@v1.4.0/test/simple_test.go (about)

     1  // Copyright 2018 The Mangos Authors
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use 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 test
    16  
    17  import (
    18  	"fmt"
    19  	"math/rand"
    20  	"sync"
    21  	"testing"
    22  
    23  	"nanomsg.org/go-mangos"
    24  	"nanomsg.org/go-mangos/protocol/pair"
    25  	"nanomsg.org/go-mangos/transport/tcp"
    26  
    27  	. "github.com/smartystreets/goconvey/convey"
    28  )
    29  
    30  // This test case just tests that the simple Send/Recv (suboptimal) interfaces
    31  // work as advertised.  This covers verification that was reported in GitHub
    32  // issue 139: Race condition in simple Send()/Recv() code
    33  
    34  func TestSimpleCorrect(t *testing.T) {
    35  
    36  	Convey("We can use the simple Send/Recv API", t, func() {
    37  		tx, e := pair.NewSocket()
    38  		So(e, ShouldBeNil)
    39  		So(tx, ShouldNotBeNil)
    40  
    41  		rx, e := pair.NewSocket()
    42  		So(e, ShouldBeNil)
    43  		So(rx, ShouldNotBeNil)
    44  
    45  		tx.AddTransport(tcp.NewTransport())
    46  		rx.AddTransport(tcp.NewTransport())
    47  
    48  		Convey("When a simple TCP pair is created", func() {
    49  			e = rx.Listen(AddrTestTCP)
    50  			So(e, ShouldBeNil)
    51  
    52  			e = tx.Dial(AddrTestTCP)
    53  			So(e, ShouldBeNil)
    54  
    55  			iter := 100000
    56  			Convey(fmt.Sprintf("We can send/recv %d msgs async", iter), func() {
    57  				wg := &sync.WaitGroup{}
    58  				wg.Add(2)
    59  				goodtx := true
    60  				goodrx := true
    61  				go simpleSend(tx, wg, iter, &goodtx)
    62  				go simpleRecv(rx, wg, iter, &goodrx)
    63  				wg.Wait()
    64  				So(goodtx, ShouldBeTrue)
    65  				So(goodrx, ShouldBeTrue)
    66  				e = tx.Close()
    67  				So(e, ShouldBeNil)
    68  				e = rx.Close()
    69  				So(e, ShouldBeNil)
    70  			})
    71  		})
    72  	})
    73  }
    74  
    75  func simpleSend(tx mangos.Socket, wg *sync.WaitGroup, iter int, pass *bool) {
    76  	defer wg.Done()
    77  	var buf [256]byte
    78  	good := true
    79  	for i := 0; i < iter; i++ {
    80  		l := rand.Intn(255) + 1
    81  		buf[0] = uint8(l)
    82  		if e := tx.Send(buf[:l]); e != nil {
    83  			good = false
    84  			break
    85  		}
    86  	}
    87  	*pass = good
    88  }
    89  
    90  func simpleRecv(rx mangos.Socket, wg *sync.WaitGroup, iter int, pass *bool) {
    91  	defer wg.Done()
    92  	good := true
    93  	for i := 0; i < iter; i++ {
    94  		buf, e := rx.Recv()
    95  		if buf == nil || e != nil || len(buf) < 1 || len(buf) != int(buf[0]) {
    96  			good = false
    97  			break
    98  		}
    99  	}
   100  	*pass = good
   101  }