text: package stdtypes
  
  import (
  	"io/ioutil"
  	"sync"
  	"testing"
  
  	"github.com/gogo/protobuf/proto"
  )
  
  func TestConcurrentTextMarshal(t *testing.T) {
  	// Verify that there are no race conditions when calling
  	// TextMarshaler.Marshal on a protobuf message that contains a StdDuration
  
  	std := StdTypes{}
  	var wg sync.WaitGroup
  
  	tm := proto.TextMarshaler{}
  
  	for i := 0; i < 2; i++ {
  		wg.Add(1)
  		go func() {
  			defer wg.Done()
  			err := tm.Marshal(ioutil.Discard, &std)
  			if err != nil {
  				t.Fatal(err)
  			}
  		}()
  	}
  	wg.Wait()
  }
  