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|
#!./perl
BEGIN {
chdir 't' if -d 't';
@INC = '../lib';
require './test.pl';
}
print "1..70\n";
my $test = 0;
sub ok ($@) {
my ($ok, $name) = @_;
++$test;
print $ok ? "ok $test - $name\n" : "not ok $test - $name\n";
}
$_ = 'global';
ok( $_ eq 'global', '$_ initial value' );
s/oba/abo/;
ok( $_ eq 'glabol', 's/// on global $_' );
{
my $_ = 'local';
ok( $_ eq 'local', 'my $_ initial value' );
s/oca/aco/;
ok( $_ eq 'lacol', 's/// on my $_' );
/(..)/;
ok( $1 eq 'la', '// on my $_' );
ok( tr/c/d/ == 1, 'tr/// on my $_ counts correctly' );
ok( $_ eq 'ladol', 'tr/// on my $_' );
{
my $_ = 'nested';
ok( $_ eq 'nested', 'my $_ nested' );
chop;
ok( $_ eq 'neste', 'chop on my $_' );
}
{
our $_;
ok( $_ eq 'glabol', 'gains access to our global $_' );
}
ok( $_ eq 'ladol', 'my $_ restored' );
}
ok( $_ eq 'glabol', 'global $_ restored' );
s/abo/oba/;
ok( $_ eq 'global', 's/// on global $_ again' );
{
my $_ = 11;
our $_ = 22;
ok( $_ eq 22, 'our $_ is seen explicitly' );
chop;
ok( $_ eq 2, '...default chop chops our $_' );
/(.)/;
ok( $1 eq 2, '...default match sees our $_' );
}
$_ = "global";
{
my $_ = 'local';
for my $_ ("foo") {
ok( $_ eq "foo", 'for my $_' );
/(.)/;
ok( $1 eq "f", '...m// in for my $_' );
ok( our $_ eq 'global', '...our $_ inside for my $_' );
}
ok( $_ eq 'local', '...my $_ restored outside for my $_' );
ok( our $_ eq 'global', '...our $_ restored outside for my $_' );
}
{
my $_ = 'local';
for ("implicit foo") { # implicit "my $_"
ok( $_ eq "implicit foo", 'for implicit my $_' );
/(.)/;
ok( $1 eq "i", '...m// in for implicity my $_' );
ok( our $_ eq 'global', '...our $_ inside for implicit my $_' );
}
ok( $_ eq 'local', '...my $_ restored outside for implicit my $_' );
ok( our $_ eq 'global', '...our $_ restored outside for implicit my $_' );
}
{
my $_ = 'local';
ok( $_ eq "postfix foo", 'postfix for' ) for 'postfix foo';
ok( $_ eq 'local', '...my $_ restored outside postfix for' );
ok( our $_ eq 'global', '...our $_ restored outside postfix for' );
}
{
for our $_ ("bar") {
ok( $_ eq "bar", 'for our $_' );
/(.)/;
ok( $1 eq "b", '...m// in for our $_' );
}
ok( $_ eq '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' );
{ ok( our $_ eq 'global', 'our $_ still visible' ); }
ok( $_ == 6 || $_ == 7, 'local lexical $_ is still seen in map' );
{ my $_ ; ok( !defined, 'nested my $_ is undefined' ); }
} 6, 7;
ok( $buf eq 'gxgx', q/...map doesn't modify outer lexical $_/ );
ok( $_ eq 'x', '...my $_ restored outside map' );
ok( our $_ eq 'global', '...our $_ restored outside map' );
map { my $_; ok( !defined, 'redeclaring $_ in map block undefs it' ); } 1;
}
{ map { my $_; ok( !defined, 'declaring $_ in map block undefs it' ); } 1; }
{
sub tmap3 () { return $_ };
my $_ = 'local';
sub tmap4 () { return $_ };
my $x = join '-', map $_.tmap3.tmap4, 1 .. 2;
ok( $x eq '1globallocal-2globallocal', 'map without {}' );
}
{
for my $_ (1) {
my $x = map $_, qw(a b);
ok( $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' );
{ ok( our $_ eq 'global', 'our $_ still visible' ); }
ok( $_ == 8 || $_ == 9, 'local lexical $_ is still seen in grep' );
} 8, 9;
ok( $buf eq 'gygy', q/...grep doesn't modify outer lexical $_/ );
ok( $_ eq 'y', '...my $_ restored outside grep' );
ok( our $_ eq 'global', '...our $_ restored outside grep' );
}
{
sub tgrep3 () { return $_ };
my $_ = 'local';
sub tgrep4 () { return $_ };
my $x = join '-', grep $_=$_.tgrep3.tgrep4, 1 .. 2;
ok( $x eq '1globallocal-2globallocal', 'grep without {} with side-effect' );
ok( $_ eq 'local', '...but without extraneous side-effects' );
}
{
for my $_ (1) {
my $x = grep $_, qw(a b);
ok( $x == 2, 'grep in scalar context' );
}
}
{
my $s = "toto";
my $_ = "titi";
$s =~ /to(?{ ok( $_ eq 'toto', 'my $_ in code-match # TODO' ) })to/
or ok( 0, "\$s=$s should match!" );
ok( our $_ eq 'global', '...our $_ restored outside code-match' );
}
{
my $_ = "abc";
my $x = reverse;
ok( $x eq "cba", 'reverse without arguments picks up $_' );
}
{
package notmain;
our $_ = 'notmain';
::ok( $::_ eq 'notmain', 'our $_ forced into main::' );
/(.*)/;
::ok( $1 eq 'notmain', '...m// defaults to our $_ in main::' );
}
my $file = tempfile();
{
open my $_, '>', $file or die "Can't open $file: $!";
print $_ "hello\n";
close $_;
ok( -s $file, 'writing to filehandle $_ works' );
}
{
open my $_, $file or die "Can't open $file: $!";
my $x = <$_>;
ok( $x eq "hello\n", 'reading from <$_> works' );
close $_;
}
{
$fqdb::_ = 'fqdb';
ok( $fqdb::_ eq 'fqdb', 'fully qualified $_ is not in main' );
ok( eval q/$fqdb::_/ eq 'fqdb', 'fully qualified, evaled $_ is not in main' );
package fqdb;
::ok( $_ ne 'fqdb', 'unqualified $_ is in main' );
::ok( q/$_/ ne 'fqdb', 'unqualified, evaled $_ is in main' );
}
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