v/vlib/sync/channel_array_mut_test.v

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const (
num_iterations = 10000
)
struct St {
mut:
dummy i64
dummy2 u32
dummy3 i64
n int
dummy4 int
}
// this function gets an array of channels for `St` references
fn do_rec_calc_send(chs []chan mut St) {
for {
mut s := <-chs[0] or {
break
}
s.n++
chs[1] <- s
}
}
fn test_channel_array_mut() {
mut chs := [chan mut St{cap: 1}, chan mut St{}]
go do_rec_calc_send(chs)
mut t := &St{
n: 100
}
for _ in 0 .. num_iterations {
chs[0] <- t
t = <-chs[1]
}
chs[0].close()
assert t.n == 100 + num_iterations
}