github.com/cloudwego/kitex@v0.9.0/internal/wpool/pool_test.go (about)

     1  /*
     2   * Copyright 2021 CloudWeGo 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 wpool
    18  
    19  import (
    20  	"runtime"
    21  	"sync"
    22  	"sync/atomic"
    23  	"testing"
    24  	"time"
    25  
    26  	"github.com/cloudwego/kitex/internal/test"
    27  )
    28  
    29  func TestWPool(t *testing.T) {
    30  	maxIdle := 1
    31  	maxIdleTime := time.Millisecond * 500
    32  	p := New(maxIdle, maxIdleTime)
    33  	var (
    34  		sum  int32
    35  		wg   sync.WaitGroup
    36  		size int32 = 100
    37  	)
    38  	test.Assert(t, p.Size() == 0)
    39  	for i := int32(0); i < size; i++ {
    40  		wg.Add(1)
    41  		p.Go(func() {
    42  			defer wg.Done()
    43  			atomic.AddInt32(&sum, 1)
    44  		})
    45  	}
    46  	test.Assert(t, p.Size() != 0)
    47  
    48  	wg.Wait()
    49  	test.Assert(t, atomic.LoadInt32(&sum) == size)
    50  	for p.Size() != int32(maxIdle) { // waiting for workers finished and idle workers left
    51  		runtime.Gosched()
    52  	}
    53  	for p.Size() > 0 { // waiting for idle workers timeout
    54  		time.Sleep(maxIdleTime)
    55  	}
    56  	test.Assert(t, p.Size() == 0)
    57  }