func checkStat(idx *index.Index, want []blob.SizedRef) error {
dest := make(chan blob.SizedRef)
defer close(dest)
errCh := make(chan error)
input := make([]blob.Ref, len(want))
for _, sbr := range want {
input = append(input, sbr.Ref)
}
go func() {
errCh <- idx.StatBlobs(dest, input)
}()
for k, sbr := range want {
got, ok := <-dest
if !ok {
return fmt.Errorf("could not get stat number %d", k)
}
if got != sbr {
return fmt.Errorf("stat %d: got %v, wanted %v", k, got, sbr)
}
}
return <-errCh
}
