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package proton
import (
"math/rand"
"testing"
"time"
"github.com/ProtonMail/gluon/async"
"github.com/stretchr/testify/require"
)
func TestFuture(t *testing.T) {
resCh := make(chan int)
NewFuture(async.NoopPanicHandler{}, func() (int, error) {
return 42, nil
}).Then(func(res int, err error) {
resCh <- res
})
require.Equal(t, 42, <-resCh)
}
func TestGroup(t *testing.T) {
group := NewGroup[int](async.NoopPanicHandler{})
for i := 0; i < 10; i++ {
i := i
group.Add(func() (int, error) {
// Sleep a random amount of time so that results are returned in a random order.
time.Sleep(time.Duration(rand.Int()%10) * time.Millisecond) //nolint:gosec
// Return the job index [0, 10].
return i, nil
})
}
resCh := make(chan int)
go func() {
require.Equal(t, group.ForEach(func(res int) error { resCh <- res; return nil }), nil)
}()
// Results should be returned in the original order.
for i := 0; i < 10; i++ {
require.Equal(t, i, <-resCh)
}
}
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