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// Copyright 2024 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package race_test
import (
"sync"
"testing"
"google.golang.org/protobuf/proto"
epb "google.golang.org/protobuf/internal/testprotos/race/extender"
mpb "google.golang.org/protobuf/internal/testprotos/race/message"
)
// There must be no other test in this package as we are testing global
// initialization which only happens once per binary.
// It tests that it is safe to initialize the descriptor of a message and
// the descriptor of an extendee of that message in parallel (i.e. no data race).
func TestConcurrentInitialization(t *testing.T) {
var wg sync.WaitGroup
wg.Add(2)
go func() {
defer wg.Done()
m := &mpb.MyMessage{
I32: proto.Int32(int32(42)),
}
// This initializes the descriptor.
_, err := proto.Marshal(m)
if err != nil {
t.Errorf("proto.Marshal(): %v", err)
}
}()
go func() {
defer wg.Done()
m := &epb.OtherMessage{
I32: proto.Int32(int32(42)),
}
// This initializes the descriptor including the extension.
_, err := proto.Marshal(m)
if err != nil {
t.Errorf("proto.Marshal(): %v", err)
}
}()
wg.Wait()
}
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