Huangzj
50 lines
875 B
Go
50 lines
875 B
Go
/*
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* @Author : huangzj
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* @Time : 2020/12/16 9:32
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* @Description：
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*/
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package snowflake
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import (
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"fmt"
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"sync"
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"testing"
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)
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var wg sync.WaitGroup
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func TestSnowflake(t *testing.T) {
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w := NewWorker(5, 5)
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ch := make(chan uint64, 10000)
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count := 10000
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wg.Add(count)
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defer close(ch)
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//并发 count个goroutine 进行 snowFlake ID 生成
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for i := 0; i < count; i++ {
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go func() {
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defer wg.Done()
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id, _ := w.NextID()
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ch <- id
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}()
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}
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wg.Wait()
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m := make(map[uint64]int)
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for i := 0; i < count; i++ {
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id := <-ch
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// 如果 map 中存在为 id 的 key, 说明生成的 snowflake ID 有重复
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_, ok := m[id]
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if ok {
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fmt.Printf("repeat id %d\n", id)
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return
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} else {
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fmt.Printf("id: %d", id)
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}
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// 将 id 作为 key 存入 map
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m[id] = i
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}
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// 成功生成 snowflake ID
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fmt.Println("All", len(m), "snowflake ID Get successed!")
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}
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