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|
use v5.10;
use strict;
use warnings;
use Test2::V0 0.000148; # is_refcount
use Future;
use constant FUTURE_HAS_CONVERGENT_ALSO => ( !defined $Future::XS::VERSION or $Future::XS::VERSION >= 0.13 );
{
my $f1 = Future->new;
my $f2 = Future->new;
my $future = Future->wait_all( $f1, $f2 );
is_oneref( $future, '$future has refcount 1 initially' );
# Two refs; one lexical here, one in $future
is_refcount( $f1, 2, '$f1 has refcount 2 after adding to ->wait_all' );
is_refcount( $f2, 2, '$f2 has refcount 2 after adding to ->wait_all' );
is( [ $future->pending_futures ],
[ $f1, $f2 ],
'$future->pending_futures before any ready' );
is( [ $future->ready_futures ],
[],
'$future->done_futures before any ready' );
my @on_ready_args;
$future->on_ready( sub { @on_ready_args = @_ } );
ok( !$future->is_ready, '$future not yet ready' );
is( scalar @on_ready_args, 0, 'on_ready not yet invoked' );
$f1->done( one => 1 );
is( [ $future->pending_futures ],
[ $f2 ],
'$future->pending_futures after $f1 ready' );
is( [ $future->ready_futures ],
[ $f1 ],
'$future->ready_futures after $f1 ready' );
is( [ $future->done_futures ],
[ $f1 ],
'$future->done_futures after $f1 ready' );
ok( !$future->is_ready, '$future still not yet ready after f1 ready' );
is( scalar @on_ready_args, 0, 'on_ready not yet invoked' );
$f2->done( two => 2 );
is( scalar @on_ready_args, 1, 'on_ready passed 1 argument' );
ref_is( $on_ready_args[0], $future, 'Future passed to on_ready' );
undef @on_ready_args;
ok( $future->is_ready, '$future now ready after f2 ready' );
my @results = $future->result;
ref_is( $results[0], $f1, 'Results[0] from $future->result is f1' );
ref_is( $results[1], $f2, 'Results[1] from $future->result is f2' );
undef @results;
is( [ $future->pending_futures ],
[],
'$future->pending_futures after $f2 ready' );
is( [ $future->ready_futures ],
[ $f1, $f2 ],
'$future->ready_futures after $f2 ready' );
is( [ $future->done_futures ],
[ $f1, $f2 ],
'$future->done_futures after $f2 ready' );
is_refcount( $future, 1, '$future has refcount 1 at end of test' );
undef $future;
is_refcount( $f1, 1, '$f1 has refcount 1 at end of test' );
is_refcount( $f2, 1, '$f2 has refcount 1 at end of test' );
}
# immediately done
{
my $f1 = Future->done;
my $future = Future->wait_all( $f1 );
ok( $future->is_ready, '$future of already-ready sub already ready' );
my @results = $future->result;
ref_is( $results[0], $f1, 'Results from $future->result of already ready' );
}
# one immediately done
{
my $f1 = Future->done;
my $f2 = Future->new;
my $future = Future->wait_all( $f1, $f2 );
ok( !$future->is_ready, '$future of partially-done subs not yet ready' );
$f2->done;
ok( $future->is_ready, '$future of completely-done subs already ready' );
my @results = $future->result;
ref_is( $results[0], $f1, 'Results from $future->result of already ready' );
}
# cancel propagation
{
my $f1 = Future->new;
my $c1;
$f1->on_cancel( sub { $c1++ } );
my $f2 = Future->new;
my $c2;
$f2->on_cancel( sub { $c2++ } );
my $future = Future->wait_all( $f1, $f2 );
$f2->done;
$future->cancel;
is( $c1, 1, '$future->cancel marks subs cancelled' );
is( $c2, undef, '$future->cancel ignores ready subs' );
}
# 'also' subs don't get cancelled
if( FUTURE_HAS_CONVERGENT_ALSO ) {
my $falso = Future->new;
my $calso;
$falso->on_cancel( sub { $calso++ } );
my $future = Future->wait_all( also => $falso );
$future->cancel;
is( $calso, undef, '$future->cancel does not cancel $falso' );
}
# cancelled convergent
{
my $f1 = Future->new;
my $f2 = Future->new;
my $future = Future->wait_all( $f1, $f2 );
$f1->done( "result" );
$f2->cancel;
ok( $future->is_ready, '$future of cancelled sub is ready after final cancellation' );
is( [ $future->done_futures ],
[ $f1 ],
'->done_futures with cancellation' );
is( [ $future->cancelled_futures ],
[ $f2 ],
'->cancelled_futures with cancellation' );
}
# wait_all on none
{
my $f = Future->wait_all( () );
ok( $f->is_ready, 'wait_all on no futures already done' );
is( [ $f->result ], [], '->result on empty wait_all is empty' );
}
# With a cancelled subfuture (RT144459)
foreach ([ precancelled => 0 ], [ postcancelled => 1 ])
{
my ( $title, $cancel_after ) = @$_;
my $f1 = Future->new;
my $f2 = Future->new;
$f2->cancel if !$cancel_after;
my $f = Future->wait_all( $f1, $f2 );
$f2->cancel if $cancel_after;
ok( !$f->is_ready, "wait_all is pending before f1 done for $title" );
$f1->done;
ok( $f->is_done, "wait_all now done after f1 done for $title" );
}
done_testing;
|
