github.skymusic.top/goreleaser/goreleaser@v0.92.0/internal/semerrgroup/sem_test.go (about)

     1  package semerrgroup
     2  
     3  import (
     4  	"sync"
     5  	"testing"
     6  	"time"
     7  
     8  	"github.com/stretchr/testify/require"
     9  )
    10  
    11  func TestSemaphore(t *testing.T) {
    12  	var g = New(4)
    13  	var lock sync.Mutex
    14  	var counter int
    15  	for i := 0; i < 10; i++ {
    16  		g.Go(func() error {
    17  			time.Sleep(10 * time.Millisecond)
    18  			lock.Lock()
    19  			counter++
    20  			lock.Unlock()
    21  			return nil
    22  		})
    23  	}
    24  	require.NoError(t, g.Wait())
    25  	require.Equal(t, counter, 10)
    26  }