get.pme.sh/pnats@v0.0.0-20240304004023-26bb5a137ed0/test/gosrv_test.go (about)

     1  // Copyright 2012-2018 The NATS Authors
     2  // Licensed under the Apache License, Version 2.0 (the "License");
     3  // you may not use this file except in compliance with the License.
     4  // You may obtain a copy of the License at
     5  //
     6  // http://www.apache.org/licenses/LICENSE-2.0
     7  //
     8  // Unless required by applicable law or agreed to in writing, software
     9  // distributed under the License is distributed on an "AS IS" BASIS,
    10  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    11  // See the License for the specific language governing permissions and
    12  // limitations under the License.
    13  
    14  package test
    15  
    16  import (
    17  	"fmt"
    18  	"net"
    19  	"runtime"
    20  	"testing"
    21  	"time"
    22  )
    23  
    24  func TestSimpleGoServerShutdown(t *testing.T) {
    25  	base := runtime.NumGoroutine()
    26  	opts := DefaultTestOptions
    27  	opts.Port = -1
    28  	s := RunServer(&opts)
    29  	s.Shutdown()
    30  	checkFor(t, time.Second, 100*time.Millisecond, func() error {
    31  		delta := (runtime.NumGoroutine() - base)
    32  		if delta > 1 {
    33  			return fmt.Errorf("%d go routines still exist post Shutdown()", delta)
    34  		}
    35  		return nil
    36  	})
    37  }
    38  
    39  func TestGoServerShutdownWithClients(t *testing.T) {
    40  	base := runtime.NumGoroutine()
    41  	opts := DefaultTestOptions
    42  	opts.Port = -1
    43  	s := RunServer(&opts)
    44  	addr := s.Addr().(*net.TCPAddr)
    45  	for i := 0; i < 50; i++ {
    46  		createClientConn(t, "127.0.0.1", addr.Port)
    47  	}
    48  	s.Shutdown()
    49  	// Wait longer for client connections
    50  	time.Sleep(1 * time.Second)
    51  	delta := (runtime.NumGoroutine() - base)
    52  	// There may be some finalizers or IO, but in general more than
    53  	// 2 as a delta represents a problem.
    54  	if delta > 2 {
    55  		t.Fatalf("%d Go routines still exist post Shutdown()", delta)
    56  	}
    57  }
    58  
    59  func TestGoServerMultiShutdown(t *testing.T) {
    60  	opts := DefaultTestOptions
    61  	opts.Port = -1
    62  	s := RunServer(&opts)
    63  	s.Shutdown()
    64  	s.Shutdown()
    65  }