github.com/kaydxh/golang@v0.0.131/pkg/pool/task/worker_test.go (about)

     1  /*
     2   *Copyright (c) 2022, kaydxh
     3   *
     4   *Permission is hereby granted, free of charge, to any person obtaining a copy
     5   *of this software and associated documentation files (the "Software"), to deal
     6   *in the Software without restriction, including without limitation the rights
     7   *to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
     8   *copies of the Software, and to permit persons to whom the Software is
     9   *furnished to do so, subject to the following conditions:
    10   *
    11   *The above copyright notice and this permission notice shall be included in all
    12   *copies or substantial portions of the Software.
    13   *
    14   *THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
    15   *IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
    16   *FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
    17   *AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
    18   *LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
    19   *OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
    20   *SOFTWARE.
    21   */
    22  package task_test
    23  
    24  import (
    25  	"context"
    26  	"fmt"
    27  	"testing"
    28  	"time"
    29  
    30  	pool_ "github.com/kaydxh/golang/pkg/pool/task"
    31  )
    32  
    33  func TestWork(t *testing.T) {
    34  	p := pool_.Worker{
    35  		Burst: 10,
    36  	}
    37  
    38  	workChan := make(chan interface{})
    39  	ctx := context.Background()
    40  	workDoneChan := p.Work(ctx, workChan, func(work interface{}) error {
    41  		fmt.Printf("process task[%v]\n", work)
    42  		time.Sleep(5 * time.Second)
    43  		//return nil
    44  		return fmt.Errorf("error")
    45  	}, false)
    46  	_ = workDoneChan
    47  
    48  	works := []int{1, 2, 3}
    49  	for _, w := range works {
    50  		// 这里select workDoneChan和ctx.Done可能无法感知，因为work func执
    51  		// 行比较耗时，而for循环在burst足够多的情况下，立马就执行结束了
    52  		select {
    53  		case workChan <- w:
    54  			// 这里和woker func函数执行顺序是不确定的，workChan <- w返回，
    55  			// 代表work func已经接收数据，开始执行woker处理协程
    56  			t.Logf("start to do work %v", w)
    57  
    58  		case <-workDoneChan:
    59  			t.Logf("workdone channel is closed, work goroutine is exit")
    60  			return
    61  
    62  		case <-ctx.Done():
    63  			//canceled, get Error messgae
    64  			t.Errorf("err: %v\n", p.Error())
    65  			return
    66  
    67  		}
    68  
    69  		// stop后，将会在workDoneChan读取到任务协助退出
    70  		//p.Stop()
    71  	}
    72  
    73  	// if need wait finish
    74  	p.Wait()
    75  	t.Logf("wait finish, err: %v", p.Error())
    76  }