wait_time_test.go

Documentation: go.etcd.io/etcd/pkg/v3/wait

     1  // Copyright 2015 The etcd 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 wait
    16  
    17  import (
    18  	"testing"
    19  	"time"
    20  )
    21  
    22  func TestWaitTime(t *testing.T) {
    23  	wt := NewTimeList()
    24  	ch1 := wt.Wait(1)
    25  	wt.Trigger(2)
    26  	select {
    27  	case <-ch1:
    28  	default:
    29  		t.Fatalf("cannot receive from ch as expected")
    30  	}
    31  
    32  	ch2 := wt.Wait(4)
    33  	wt.Trigger(3)
    34  	select {
    35  	case <-ch2:
    36  		t.Fatalf("unexpected to receive from ch2")
    37  	default:
    38  	}
    39  	wt.Trigger(4)
    40  	select {
    41  	case <-ch2:
    42  	default:
    43  		t.Fatalf("cannot receive from ch2 as expected")
    44  	}
    45  
    46  	select {
    47  	// wait on a triggered deadline
    48  	case <-wt.Wait(4):
    49  	default:
    50  		t.Fatalf("unexpected blocking when wait on triggered deadline")
    51  	}
    52  }
    53  
    54  func TestWaitTestStress(t *testing.T) {
    55  	chs := make([]<-chan struct{}, 0)
    56  	wt := NewTimeList()
    57  	for i := 0; i < 10000; i++ {
    58  		chs = append(chs, wt.Wait(uint64(i)))
    59  	}
    60  	wt.Trigger(10000 + 1)
    61  
    62  	for _, ch := range chs {
    63  		select {
    64  		case <-ch:
    65  		case <-time.After(time.Second):
    66  			t.Fatalf("cannot receive from ch as expected")
    67  		}
    68  	}
    69  }
    70  
    71  func BenchmarkWaitTime(b *testing.B) {
    72  	wt := NewTimeList()
    73  	for i := 0; i < b.N; i++ {
    74  		wt.Wait(1)
    75  	}
    76  }
    77  
    78  func BenchmarkTriggerAnd10KWaitTime(b *testing.B) {
    79  	for i := 0; i < b.N; i++ {
    80  		wt := NewTimeList()
    81  		for j := 0; j < 10000; j++ {
    82  			wt.Wait(uint64(j))
    83  		}
    84  		wt.Trigger(10000 + 1)
    85  	}
    86  }
    87
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