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|
#!./perl -w
BEGIN {
chdir 't' if -d 't';
@INC = '../lib';
require './test.pl';
}
use strict;
no warnings 'misc', 'experimental::lexical_topic';
$_ = 'global';
is($_, 'global', '$_ initial value');
s/oba/abo/;
is($_, 'glabol', 's/// on global $_');
{
my $_ = 'local';
is($_, 'local', 'my $_ initial value');
s/oca/aco/;
is($_, 'lacol', 's/// on my $_');
/(..)/;
is($1, 'la', '// on my $_');
cmp_ok(tr/c/d/, '==', 1, 'tr/// on my $_ counts correctly' );
is($_, 'ladol', 'tr/// on my $_');
{
my $_ = 'nested';
is($_, 'nested', 'my $_ nested');
chop;
is($_, 'neste', 'chop on my $_');
}
{
our $_;
is($_, 'glabol', 'gains access to our global $_');
}
is($_, 'ladol', 'my $_ restored');
}
is($_, 'glabol', 'global $_ restored');
s/abo/oba/;
is($_, 'global', 's/// on global $_ again');
{
my $_ = 11;
our $_ = 22;
is($_, 22, 'our $_ is seen explicitly');
chop;
is($_, 2, '...default chop chops our $_');
/(.)/;
is($1, 2, '...default match sees our $_');
}
$_ = "global";
{
my $_ = 'local';
for my $_ ("foo") {
is($_, "foo", 'for my $_');
/(.)/;
is($1, "f", '...m// in for my $_');
is(our $_, 'global', '...our $_ inside for my $_');
}
is($_, 'local', '...my $_ restored outside for my $_');
is(our $_, 'global', '...our $_ restored outside for my $_');
}
{
my $_ = 'local';
for ("implicit foo") { # implicit "my $_"
is($_, "implicit foo", 'for implicit my $_');
/(.)/;
is($1, "i", '...m// in for implicit my $_');
is(our $_, 'global', '...our $_ inside for implicit my $_');
}
is($_, 'local', '...my $_ restored outside for implicit my $_');
is(our $_, 'global', '...our $_ restored outside for implicit my $_');
}
{
my $_ = 'local';
is($_, "postfix foo", 'postfix for' ) for 'postfix foo';
is($_, 'local', '...my $_ restored outside postfix for');
is(our $_, 'global', '...our $_ restored outside postfix for');
}
{
for our $_ ("bar") {
is($_, "bar", 'for our $_');
/(.)/;
is($1, "b", '...m// in for our $_');
}
is($_, 'global', '...our $_ restored outside for our $_');
}
{
my $buf = '';
sub tmap1 { /(.)/; $buf .= $1 } # uses our $_
my $_ = 'x';
sub tmap2 { /(.)/; $buf .= $1 } # uses my $_
map {
tmap1();
tmap2();
ok( /^[67]\z/, 'local lexical $_ is seen in map' );
{ is(our $_, 'global', 'our $_ still visible'); }
ok( $_ == 6 || $_ == 7, 'local lexical $_ is still seen in map' );
{ my $_ ; is($_, undef, 'nested my $_ is undefined'); }
} 6, 7;
is($buf, 'gxgx', q/...map doesn't modify outer lexical $_/);
is($_, 'x', '...my $_ restored outside map');
is(our $_, 'global', '...our $_ restored outside map');
map { my $_; is($_, undef, 'redeclaring $_ in map block undefs it'); } 1;
}
{ map { my $_; is($_, undef, 'declaring $_ in map block undefs it'); } 1; }
{
sub tmap3 () { return $_ };
my $_ = 'local';
sub tmap4 () { return $_ };
my $x = join '-', map $_.tmap3.tmap4, 1 .. 2;
is($x, '1globallocal-2globallocal', 'map without {}');
}
{
for my $_ (1) {
my $x = map $_, qw(a b);
is($x, 2, 'map in scalar context');
}
}
{
my $buf = '';
sub tgrep1 { /(.)/; $buf .= $1 }
my $_ = 'y';
sub tgrep2 { /(.)/; $buf .= $1 }
grep {
tgrep1();
tgrep2();
ok( /^[89]\z/, 'local lexical $_ is seen in grep' );
{ is(our $_, 'global', 'our $_ still visible'); }
ok( $_ == 8 || $_ == 9, 'local lexical $_ is still seen in grep' );
} 8, 9;
is($buf, 'gygy', q/...grep doesn't modify outer lexical $_/);
is($_, 'y', '...my $_ restored outside grep');
is(our $_, 'global', '...our $_ restored outside grep');
}
{
sub tgrep3 () { return $_ };
my $_ = 'local';
sub tgrep4 () { return $_ };
my $x = join '-', grep $_=$_.tgrep3.tgrep4, 1 .. 2;
is($x, '1globallocal-2globallocal', 'grep without {} with side-effect');
is($_, 'local', '...but without extraneous side-effects');
}
{
for my $_ (1) {
my $x = grep $_, qw(a b);
is($x, 2, 'grep in scalar context');
}
}
{
my $s = "toto";
my $_ = "titi";
my $r;
{
local $::TODO = 'Marked as todo since test was added in 59f00321bbc2d046';
$r = $s =~ /to(?{ is($_, 'toto', 'my $_ in code-match' ) })to/;
}
ok($r, "\$s=$s should match!");
is(our $_, 'global', '...our $_ restored outside code-match');
}
{
my $_ = "abc";
my $x = reverse;
is($x, "cba", 'reverse without arguments picks up $_');
}
{
package notmain;
our $_ = 'notmain';
::is($::_, 'notmain', 'our $_ forced into main::');
/(.*)/;
::is($1, 'notmain', '...m// defaults to our $_ in main::');
}
my $file = tempfile();
{
open my $_, '>', $file or die "Can't open $file: $!";
print $_ "hello\n";
close $_;
cmp_ok(-s $file, '>', 5, 'writing to filehandle $_ works');
}
{
open my $_, $file or die "Can't open $file: $!";
my $x = <$_>;
is($x, "hello\n", 'reading from <$_> works');
close $_;
}
{
$fqdb::_ = 'fqdb';
is($fqdb::_, 'fqdb', 'fully qualified $_ is not in main' );
is(eval q/$fqdb::_/, 'fqdb', 'fully qualified, evaled $_ is not in main' );
package fqdb;
::isnt($_, 'fqdb', 'unqualified $_ is in main' );
::isnt(eval q/$_/, 'fqdb', 'unqualified, evaled $_ is in main');
}
{
$clank_est::qunckkk = 3;
our $qunckkk;
$qunckkk = 4;
package clank_est;
our $qunckkk;
::is($qunckkk, 3, 'regular variables are not forced to main');
}
{
$whack::_ = 3;
our $_;
$_ = 4;
package whack;
our $_;
::is($_, 4, '$_ is "special", and always forced to main');
}
done_testing();
|
