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#!./perl
BEGIN {
chdir 't' if -d 't';
require './test.pl';
set_up_inc(qw '../lib ../cpan/Text-ParseWords/lib');
require Config; # load these before we mess with *CORE::GLOBAL::require
require 'Config_heavy.pl'; # since runperl will need them
}
plan tests => 36;
#
# This file tries to test builtin override using CORE::GLOBAL
#
my $dirsep = "/";
BEGIN { package Foo; *main::getlogin = sub { "kilroy"; } }
is( getlogin, "kilroy" );
my $t = 42;
BEGIN { *CORE::GLOBAL::time = sub () { $t; } }
is( 45, time + 3 );
#
# require has special behaviour
#
my $r;
BEGIN { *CORE::GLOBAL::require = sub { $r = shift; 1; } }
require Foo;
is( $r, "Foo.pm" );
require Foo::Bar;
is( $r, join($dirsep, "Foo", "Bar.pm") );
require 'Foo';
is( $r, "Foo" );
require 5.006;
is( $r, "5.006" );
require v5.6;
ok( abs($r - 5.006) < 0.001 && $r eq "\x05\x06" );
eval "use Foo";
is( $r, "Foo.pm" );
eval "use Foo::Bar";
is( $r, join($dirsep, "Foo", "Bar.pm") );
{
my @r;
local *CORE::GLOBAL::require = sub { push @r, shift; 1; };
eval "use 5.006";
like( " @r ", qr " 5\.006 " );
}
{
local $_ = 'foo.pm';
require;
is( $r, 'foo.pm' );
}
# localizing *CORE::GLOBAL::foo should revert to finding CORE::foo
{
local(*CORE::GLOBAL::require);
$r = '';
eval "require NoNeXiSt;";
ok( ! ( $r or $@ !~ /^Can't locate NoNeXiSt/i ) );
}
#
# readline() has special behaviour too
#
$r = 11;
BEGIN { *CORE::GLOBAL::readline = sub (;*) { ++$r }; }
is( <FH> , 12 );
is( <$fh> , 13 );
my $pad_fh;
is( <$pad_fh> , 14 );
{
my $buf = ''; $buf .= <FH>;
is( $buf, 15, 'rcatline' );
}
# Non-global readline() override
BEGIN { *Rgs::readline = sub (;*) { --$r }; }
{
package Rgs;
::is( <FH> , 14 );
::is( <$fh> , 13 );
::is( <$pad_fh> , 12 );
my $buf = ''; $buf .= <FH>;
::is( $buf, 11, 'rcatline' );
}
# Global readpipe() override
BEGIN { *CORE::GLOBAL::readpipe = sub ($) { "$_[0] " . --$r }; }
is( `rm`, "rm 10", '``' );
is( qx/cp/, "cp 9", 'qx' );
# Non-global readpipe() override
BEGIN { *Rgs::readpipe = sub ($) { ++$r . " $_[0]" }; }
{
package Rgs;
::is( `rm`, "10 rm", '``' );
::is( qx/cp/, "11 cp", 'qx' );
}
# Verify that the parsing of overridden keywords isn't messed up
# by the indirect object notation
{
local $SIG{__WARN__} = sub {
::like( $_[0], qr/^ok overriden at/ );
};
BEGIN { *OverridenWarn::warn = sub { CORE::warn "@_ overriden"; }; }
package OverridenWarn;
sub foo { "ok" }
warn( OverridenWarn->foo() );
warn OverridenWarn->foo();
}
BEGIN { *OverridenPop::pop = sub { ::is( $_[0][0], "ok" ) }; }
{
package OverridenPop;
sub foo { [ "ok" ] }
pop( OverridenPop->foo() );
pop OverridenPop->foo();
}
{
eval {
local *CORE::GLOBAL::require = sub {
CORE::require($_[0]);
};
require 5;
require Text::ParseWords;
};
is $@, '';
}
# Constant inlining should not countermand "use subs" overrides
BEGIN { package other; *::caller = \&::caller }
sub caller() { 42 }
caller; # inline the constant
is caller, 42, 'constant inlining does not undo "use subs" on keywords';
is runperl(prog => 'sub CORE::GLOBAL::do; do file; print qq-ok\n-'),
"ok\n",
'no crash with CORE::GLOBAL::do stub';
is runperl(prog => 'sub CORE::GLOBAL::glob; glob; print qq-ok\n-'),
"ok\n",
'no crash with CORE::GLOBAL::glob stub';
is runperl(prog => 'sub CORE::GLOBAL::require; require re; print qq-o\n-'),
"o\n",
'no crash with CORE::GLOBAL::require stub';
like runperl(prog => 'use constant foo=>1; '
.'BEGIN { *{q|CORE::GLOBAL::readpipe|} = \&{q|foo|};1}'
.'warn ``',
stderr => 1),
qr/Too many arguments/,
'`` does not ignore &CORE::GLOBAL::readpipe aliased to a constant';
like runperl(prog => 'use constant foo=>1; '
.'BEGIN { *{q|CORE::GLOBAL::readline|} = \&{q|foo|};1}'
.'warn <a>',
stderr => 1),
qr/Too many arguments/,
'<> does not ignore &CORE::GLOBAL::readline aliased to a constant';
is runperl(prog => 'use constant t=>42; '
.'BEGIN { *{q|CORE::GLOBAL::time|} = \&{q|t|};1}'
.'print time, chr utf8::unicode_to_native(10)',
stderr => 1),
"42\n",
'keywords respect global constant overrides';
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