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#!/usr/bin/perl
use v5.14;
use warnings;
use Test2::V0;
use Future;
use Future::AsyncAwait;
my $orig_cxstack_ix = Future::AsyncAwait::__cxstack_ix;
# ->cancel stops execution
{
my $called;
my $f1 = Future->new;
my $f2 = (async sub {
await $f1;
$called++;
})->();
$f2->cancel;
$f1->done;
ok( !$called, 'async sub stops execution after ->cancel' );
}
# ->cancel propagates
SKIP: {
# See
# https://rt.cpan.org/Ticket/Display.html?id=129202#txn-1843918
skip "Cancel propagation is not implemented before perl 5.24", 1
if $] < 5.024;
my $f1 = Future->new;
my $f2 = (async sub { await $f1 })->();
$f2->cancel;
ok( $f1->is_cancelled, 'async sub propagates cancel' );
}
is( Future::AsyncAwait::__cxstack_ix, $orig_cxstack_ix,
'cxstack_ix did not grow during the test' );
done_testing;
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