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#!/usr/bin/perl
use v5.14;
use warnings;
use Test2::V0;
BEGIN {
plan skip_all => "Future is not available"
unless eval { require Future };
plan skip_all => "Future::AsyncAwait >= 0.31_002 is not available"
unless eval { require Future::AsyncAwait;
Future::AsyncAwait->VERSION( '0.31_002' ) };
plan skip_all => "Syntax::Keyword::Dynamically >= 0.02 is not available"
unless eval { require Syntax::Keyword::Dynamically;
Syntax::Keyword::Dynamically->VERSION( '0.02' ) };
Future::AsyncAwait->import;
Syntax::Keyword::Dynamically->import(qw( -async ));
diag( "Future::AsyncAwait $Future::AsyncAwait::VERSION, " .
"Syntax::Keyword::Dynamically $Syntax::Keyword::Dynamically::VERSION" );
}
{
my $var = 1;
async sub with_dynamically
{
my $f = shift;
dynamically $var = 2;
is( $var, 2, '$var is 2 before await' );
await $f;
is( $var, 2, '$var is 2 after await' );
return "result";
}
my $f1 = Future->new;
my $fret = with_dynamically( $f1 );
is( $var, 1, '$var is 1 while suspended' );
$f1->done;
is( scalar $fret->get, "result", '$fret for dynamically in async sub' );
is( $var, 1, '$var is 1 after finish' );
}
# multiple nested scopes
{
my $var = 1;
my @f;
sub tick { push @f, my $f = Future->new; return $f }
async sub with_dynamically_nested
{
dynamically $var = 2;
{
dynamically $var = 3;
await tick();
is( $var, 3, '$var is 3 in inner scope' );
}
is( $var, 2, '$var is 2 in outer scope' );
await tick();
is( $var, 2, '$var is still 2 in outer scope' );
}
my $fret = with_dynamically_nested();
is( $var, 1, '$var is 1 while suspended' );
while( @f ) {
( shift @f )->done;
is( $var, 1, '$var is still 1' );
}
$fret->get;
is( $var, 1, '$var is 1 after finish' );
}
# OP_HELEM_DYN is totally different in async mode
{
my %hash = my %orig = (
key => "old",
delkey => "gone",
);
async sub with_dynamically_helem
{
my $f = shift;
dynamically $hash{key} = "new";
dynamically $hash{newkey} = "added";
dynamically $hash{delkey} = "begone!";
delete $hash{delkey};
await $f;
is( \%hash, { key => "new", newkey => "added" },
'%hash after await' );
return "result";
}
my $f1 = Future->new;
my $fret = with_dynamically_helem( $f1 );
is( \%hash, \%orig, '%hash while suspended ');
$f1->done;
is( scalar $fret->get, "result", '$fret for dynamically helem in async sub' );
is( \%hash, \%orig, '%hash after finish' );
}
# dynamically set variables in outer scopes during await
{
my $var = 1;
async sub outer
{
dynamically $var = 2;
await inner();
is( $var, 2, '$var is 2 after await in outer()' );
}
my $f1 = Future->new;
async sub inner
{
is( $var, 2, '$var is 2 before await in inner()' );
await $f1;
is( $var, 2, '$var is 2 after await in inner()' );
}
my $fret = outer();
is( $var, 1, '$var is 1 while suspended' );
$f1->done;
$fret->get;
is( $var, 1, '$var is 1 after finish' );
}
# captured outer dynamic can be re-captured by later async sub
{
my $var = 1;
my %hash = ( key => 3 );
my $f1 = Future->new;
my $f2 = Future->new;
my $fret = do {
dynamically $var = 2;
dynamically $hash{key} = 4;
(async sub {
await $f1;
is( $var, 2, '$var is 2 before later await' );
is( $hash{key}, 4, '$var is 4 before later await' );
await +(async sub {
await $f2;
is( $var, 2, '$var is 2 inside inner async sub' );
is( $hash{key}, 4, '$var is 4 inside inner async sub' );
})->();
})->();
};
is( $var, 1, '$var is 1 before $f1->done' );
is( $hash{key}, 3, '$hash{key} is 3 before $f1->done' );
$f1->done;
is( $var, 1, '$var is 1 before $f2->done' );
is( $hash{key}, 3, '$hash{key} is 3 before $f2->done' );
$f2->done;
is( $var, 1, '$var is 1 after $f2->done' );
is( $hash{key}, 3, '$hash{key} is 3 after $f2->done' );
$fret->get;
}
# destroy test
{
my %state;
package DestroyChecker {
sub new {
my $class = shift;
my $self = bless [ @_ ], $class;
$state{$self->[0]} = "LIVE";
return $self;
}
sub DESTROY {
my $self = shift;
$state{$self->[0]} = "DEAD";
}
}
dynamically my $var = DestroyChecker->new( "orig" );
my $f1 = Future->new;
my $fret = (async sub {
dynamically $var = DestroyChecker->new( "new" );
await $f1;
})->();
is( \%state, { orig => "LIVE", new => "LIVE" }, '%state initially' );
$f1->done;
$fret->get;
is( \%state, { orig => "LIVE", new => "DEAD" }, '%state after done' );
undef $var;
is( \%state, { orig => "DEAD", new => "DEAD" }, '%state finally' );
}
done_testing;
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