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#!/usr/bin/perl
use v5.14;
use warnings;
use Test2::V0;
use Future;
use Future::AsyncAwait;
# Check that folded constants stored on the pad with the SvPADTMP flag set are
# still copied successfully by cv_copy_flags().
#
# https://rt.cpan.org/Ticket/Display.html?id=142468
use constant {
REG_LUXH => 0x03,
REG_LUXL => 0x04,
};
my @written;
my $ftick;
sub write_then_read
{
my ( $bytes, $len ) = @_;
push @written, [ $bytes, $len ];
return $ftick = Future->new;
}
async sub read_lux
{
return unpack "S>", join "",
await write_then_read( ( pack "C", REG_LUXH ), 1 ),
await write_then_read( ( pack "C", REG_LUXL ), 1 );
}
{
my $fret = read_lux;
do { my $f = $ftick; undef $ftick; $f->done } while $ftick;
is( \@written, [ [ "\x03", 1 ], [ "\x04", 1 ], ],
'arguments to ->write_then_read' );
}
done_testing;
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