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package random
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import (
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"math/rand"
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"sync"
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"testing"
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)
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// for go test -v -race
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func TestConcurrency(t *testing.T) {
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rnd := rand.New(NewSource())
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var wg sync.WaitGroup
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for i := 0; i < 10; i++ {
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wg.Add(1)
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go func() {
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rnd.Int63()
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wg.Done()
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}()
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}
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wg.Wait()
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}
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