vitess.io/vitess@v0.16.2/go/pools/numbered_test.go (about)

     1  /*
     2  Copyright 2019 The Vitess Authors.
     3  
     4  Licensed under the Apache License, Version 2.0 (the "License");
     5  you may not use this file except in compliance with the License.
     6  You may obtain a copy of the License at
     7  
     8      http://www.apache.org/licenses/LICENSE-2.0
     9  
    10  Unless required by applicable law or agreed to in writing, software
    11  distributed under the License is distributed on an "AS IS" BASIS,
    12  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13  See the License for the specific language governing permissions and
    14  limitations under the License.
    15  */
    16  
    17  package pools
    18  
    19  import (
    20  	"math/rand"
    21  	"strings"
    22  	"testing"
    23  
    24  	"github.com/stretchr/testify/assert"
    25  	"github.com/stretchr/testify/require"
    26  )
    27  
    28  func TestNumberedGeneral(t *testing.T) {
    29  	id := int64(0)
    30  	p := NewNumbered()
    31  
    32  	err := p.Register(id, id)
    33  	require.NoError(t, err)
    34  
    35  	err = p.Register(id, id)
    36  	assert.Contains(t, "already present", err.Error())
    37  
    38  	var v any
    39  	v, err = p.Get(id, "test")
    40  	require.NoError(t, err)
    41  	assert.Equal(t, id, v.(int64))
    42  
    43  	_, err = p.Get(id, "test1")
    44  	assert.Contains(t, "in use: test", err.Error())
    45  
    46  	p.Put(id)
    47  	_, err = p.Get(1, "test2")
    48  	assert.Contains(t, "not found", err.Error())
    49  	p.Unregister(1, "test") // Should not fail
    50  	p.Unregister(0, "test")
    51  	// p is now empty
    52  
    53  	if _, err = p.Get(0, "test3"); !(strings.HasPrefix(err.Error(), "ended at") && strings.HasSuffix(err.Error(), "(test)")) {
    54  		t.Errorf("want prefix 'ended at' and suffix '(test)', got '%v'", err)
    55  	}
    56  
    57  	if p.Size() != 0 {
    58  		t.Errorf("want 0, got %v", p.Size())
    59  	}
    60  	p.WaitForEmpty()
    61  }
    62  
    63  func TestNumberedGetByFilter(t *testing.T) {
    64  	p := NewNumbered()
    65  	p.Register(1, 1)
    66  	p.Register(2, 2)
    67  	p.Register(3, 3)
    68  	p.Get(1, "locked")
    69  
    70  	vals := p.GetByFilter("filtered", func(v any) bool {
    71  		return v.(int) <= 2
    72  	})
    73  	want := []any{2}
    74  	assert.Equal(t, want, vals)
    75  }
    76  
    77  /*
    78  go test --test.run=XXX --test.bench=. --test.benchtime=10s
    79  
    80  golang.org/x/tools/cmd/benchcmp /tmp/bad.out /tmp/good.out
    81  
    82  benchmark                                 old ns/op     new ns/op     delta
    83  BenchmarkRegisterUnregister-8             667           596           -10.64%
    84  BenchmarkRegisterUnregisterParallel-8     2430          1752          -27.90%
    85  */
    86  func BenchmarkRegisterUnregister(b *testing.B) {
    87  	p := NewNumbered()
    88  	id := int64(1)
    89  	val := "foobarbazdummyval"
    90  	for i := 0; i < b.N; i++ {
    91  		p.Register(id, val)
    92  		p.Unregister(id, "some reason")
    93  	}
    94  }
    95  
    96  func BenchmarkRegisterUnregisterParallel(b *testing.B) {
    97  	p := NewNumbered()
    98  	val := "foobarbazdummyval"
    99  	b.SetParallelism(200)
   100  	b.RunParallel(func(pb *testing.PB) {
   101  		for pb.Next() {
   102  			id := rand.Int63()
   103  			p.Register(id, val)
   104  			p.Unregister(id, "some reason")
   105  		}
   106  	})
   107  }