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|
#!./perl
BEGIN {
chdir 't' if -d 't';
@INC = '../lib';
require './test.pl';
}
plan (114);
# Please do not eliminate the plan. We have tests in DESTROY blocks.
sub expected {
my($object, $package, $type) = @_;
print "# $object $package $type\n";
is(ref($object), $package);
my $r = qr/^\Q$package\E=(\w+)\(0x([0-9a-f]+)\)$/;
like("$object", $r);
if ("$object" =~ $r) {
is($1, $type);
# in 64-bit platforms hex warns for 32+ -bit values
cmp_ok(do {no warnings 'portable'; hex($2)}, '==', $object);
}
else {
fail(); fail();
}
}
# test blessing simple types
$a1 = bless {}, "A";
expected($a1, "A", "HASH");
$b1 = bless [], "B";
expected($b1, "B", "ARRAY");
$c1 = bless \(map "$_", "test"), "C";
expected($c1, "C", "SCALAR");
our $test = "foo"; $d1 = bless \*test, "D";
expected($d1, "D", "GLOB");
$e1 = bless sub { 1 }, "E";
expected($e1, "E", "CODE");
$f1 = bless \[], "F";
expected($f1, "F", "REF");
$g1 = bless \substr("test", 1, 2), "G";
expected($g1, "G", "LVALUE");
# blessing ref to object doesn't modify object
expected(bless(\$a1, "F"), "F", "REF");
expected($a1, "A", "HASH");
# reblessing does modify object
bless $a1, "A2";
expected($a1, "A2", "HASH");
# local and my
{
local $a1 = bless $a1, "A3"; # should rebless outer $a1
local $b1 = bless [], "B3";
my $c1 = bless $c1, "C3"; # should rebless outer $c1
our $test2 = ""; my $d1 = bless \*test2, "D3";
expected($a1, "A3", "HASH");
expected($b1, "B3", "ARRAY");
expected($c1, "C3", "SCALAR");
expected($d1, "D3", "GLOB");
}
expected($a1, "A3", "HASH");
expected($b1, "B", "ARRAY");
expected($c1, "C3", "SCALAR");
expected($d1, "D", "GLOB");
# class is magic
"E" =~ /(.)/;
expected(bless({}, $1), "E", "HASH");
{
local $! = 1;
my $string = "$!";
$! = 2; # attempt to avoid cached string
$! = 1;
expected(bless({}, $!), $string, "HASH");
# ref is ref to magic
{
{
package F;
sub test { main::is(${$_[0]}, $string) }
}
$! = 2;
$f1 = bless \$!, "F";
$! = 1;
$f1->test;
}
}
# ref is magic
### example of magic variable that is a reference??
# no class, or empty string (with a warning), or undef (with two)
expected(bless([]), 'main', "ARRAY");
{
local $SIG{__WARN__} = sub { push @w, join '', @_ };
use warnings;
$m = bless [];
expected($m, 'main', "ARRAY");
is (scalar @w, 0);
@w = ();
$m = bless [], '';
expected($m, 'main', "ARRAY");
is (scalar @w, 1);
@w = ();
$m = bless [], undef;
expected($m, 'main', "ARRAY");
is (scalar @w, 2);
}
# class is a ref
$a1 = bless {}, "A4";
$b1 = eval { bless {}, $a1 };
like ($@, qr/^Attempt to bless into a reference at /, "class is a ref");
# class is an overloaded ref
{
package H4;
use overload '""' => sub { "C4" };
}
$h1 = bless {}, "H4";
$c4 = eval { bless \$test, $h1 };
is ($@, '', "class is an overloaded ref");
expected($c4, 'C4', "SCALAR");
{
my %h = 1..2;
my($k) = keys %h;
my $x=\$k;
bless $x, 'pam';
is(ref $x, 'pam');
my $a = bless \(keys %h), 'zap';
is(ref $a, 'zap');
}
bless [], "main::";
ok(1, 'blessing into main:: does not crash'); # [perl #87388]
sub _117941 { package _117941; bless [] }
delete $::{"_117941::"};
eval { _117941() };
like $@, qr/^Attempt to bless into a freed package at /,
'bless with one arg when current stash is freed';
for(__PACKAGE__) {
eval { bless \$_ };
like $@, qr/^Modification of a read-only value attempted/,
'read-only COWs cannot be blessed';
}
sub TIESCALAR { bless \(my $thing = pop), shift }
sub FETCH { ${$_[0]} }
tie $tied, main => $untied = [];
eval { bless $tied };
is ref $untied, "main", 'blessing through tied refs' or diag $@;
bless \$victim, "Food";
eval 'bless \$Food::bard, "Bard"';
sub Bard::DESTROY {
isnt ref(\$victim), '__ANON__',
'reblessing does not leave an object in limbo temporarily';
bless \$victim
}
undef *Food::;
{
my $w;
# This should catch ‘Attempt to free unreferenced scalar’.
local $SIG{__WARN__} = sub { $w .= shift };
bless \$victim;
is $w, undef,
'no warnings when reblessing inside DESTROY triggered by reblessing'
}
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