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|
#!/usr/bin/perl
use strict;
use warnings;
use Test::More;
use Test::Identity;
use Future;
use Future::Utils qw( fmap_void );
# fmap_void from ARRAY, no concurrency
{
my @subf;
my $future = fmap_void {
return $subf[$_[0]] = Future->new
} foreach => [ 0 .. 2 ];
ok( defined $future, '$future defined for fmap non-concurrent' );
ok( defined $subf[0], '$subf[0] defined' );
ok( !defined $subf[1], '$subf[1] not yet defined' );
$subf[0]->done;
ok( defined $subf[1], '$subf[1] defined after $subf[0] done' );
$subf[1]->done;
$subf[2]->done;
ok( $future->is_ready, '$future now ready after subs done' );
is_deeply( [ $future->get ], [], '$future->get empty for fmap_void' );
}
# fmap_void from CODE
{
my @subf;
my $future = fmap_void {
return $subf[$_[0]] = Future->new
} generate => do { my $count = 0;
sub { return unless $count < 3; $count++ } };
ok( defined $future, '$future defined for fmap non-concurrent from CODE' );
ok( defined $subf[0], '$subf[0] defined' );
$subf[0]->done;
$subf[1]->done;
$subf[2]->done;
ok( $future->is_ready, '$future now ready after subs done from CODE' );
}
# fmap_void concurrent
{
my @subf;
my $future = fmap_void {
return $subf[$_[0]] = Future->new
} foreach => [ 0 .. 4 ],
concurrent => 2;
ok( defined $future, '$future defined for fmap concurrent=2' );
ok( defined $subf[0], '$subf[0] defined' );
ok( defined $subf[1], '$subf[1] defined' );
$subf[0]->done; $subf[1]->done;
ok( defined $subf[2], '$subf[2] defined' );
ok( defined $subf[3], '$subf[3] defined' );
$subf[2]->done; $subf[3]->done;
ok( defined $subf[4], '$subf[4] deifned' );
ok( !$future->is_ready, '$future not yet ready while one sub remains' );
$subf[4]->done;
ok( $future->is_ready, '$future now ready after concurrent subs done' );
}
# fmap_void late-addition concurrently
{
my @items = ( 1, 2, 3 );
my @subf;
my $future = fmap_void {
my $val = shift;
my $f = $subf[$val] = Future->new;
$f->on_done( sub { push @items, 4, 5, 6 } ) if $val == 3;
$f
} foreach => \@items,
concurrent => 4;
ok( defined $future, '$future defined for fmap concurrent=3 late-add' );
ok( $subf[1] && $subf[2] && $subf[3], '3 subfutures initally ready' );
$subf[1]->done;
$subf[2]->done;
ok( !$subf[4], 'No $subf[4] before $subf[3] done' );
$subf[3]->done;
ok( $subf[4] && $subf[5] && $subf[6], '3 new subfutures now ready' );
$subf[4]->done;
$subf[5]->done;
$subf[6]->done;
ok( $future->is_ready, '$future now ready after all 6 subfutures done' );
}
# fmap_void on immediates
{
my $future = fmap_void {
return Future->done
} foreach => [ 0 .. 2 ];
ok( $future->is_ready, '$future already ready for fmap on immediates' );
}
# fmap_void on non/immediate mix
{
my @item_f = ( my $item = Future->new, Future->done, Future->done );
my $future = fmap_void {
return $_[0];
} foreach => \@item_f,
concurrent => 2;
ok( !$future->is_ready, '$future not yet ready before non-immediate done' );
$item->done;
ok( $future->is_ready, '$future now ready after non-immediate done' );
}
# fmap_void fail
{
my @subf;
my $future = fmap_void {
return $subf[$_[0]] = Future->new;
} foreach => [ 0, 1, 2 ],
concurrent => 2;
ok( !$subf[0]->is_cancelled, '$subf[0] not cancelled before failure' );
$subf[1]->fail( "failure" );
ok( $subf[0]->is_cancelled, '$subf[0] now cancelled after $subf[1] failure' );
ok( $future->is_ready, '$future now ready after $sub[1] failure' );
is( scalar $future->failure, "failure", '$future->failure after $sub[1] failure' );
ok( !defined $subf[2], '$subf[2] was never started after $subf[1] failure' );
}
# fmap_void immediate fail
{
my @subf;
my $future = fmap_void {
if( $_[0] eq "fail" ) {
return Future->fail( "failure" );
}
else {
$subf[$_[0]] = Future->new;
}
} foreach => [ 0, "fail", 2 ],
concurrent => 3;
ok( $future->is_ready, '$future is already ready' );
is( scalar $future->failure, "failure", '$future->failure after immediate failure' );
ok( $subf[0]->is_cancelled, '$subf[0] is cancelled after immediate failure' );
ok( !defined $subf[2], '$subf[2] was never started after immediate failure' );
}
# fmap_void cancel
{
my @subf;
my $future = fmap_void {
return $subf[$_[0]] = Future->new;
} foreach => [ 0, 1, 2 ],
concurrent => 2;
$future->cancel;
ok( $subf[0]->is_cancelled, '$subf[0] now cancelled after ->cancel' );
ok( $subf[1]->is_cancelled, '$subf[1] now cancelled after ->cancel' );
ok( !defined $subf[2], '$subf[2] was never started after ->cancel' );
}
# fmap_void return
{
my $future = fmap_void {
return Future->done;
} foreach => [ 0 ], return => my $ret = Future->new;
identical( $future, $ret, 'repeat with return yields correct instance' );
}
done_testing;
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