#!./perl -w
#
# test method calls and autoloading.
#
BEGIN {
chdir 't' if -d 't';
@INC = qw(. ../lib);
require "test.pl";
}
use strict;
no warnings 'once';
plan(tests => 95);
@A::ISA = 'B';
@B::ISA = 'C';
sub C::d {"C::d"}
sub D::d {"D::d"}
# First, some basic checks of method-calling syntax:
my $obj = bless [], "Pack";
sub Pack::method { shift; join(",", "method", @_) }
my $mname = "method";
is(Pack->method("a","b","c"), "method,a,b,c");
is(Pack->$mname("a","b","c"), "method,a,b,c");
is(method Pack ("a","b","c"), "method,a,b,c");
is((method Pack "a","b","c"), "method,a,b,c");
is(Pack->method(), "method");
is(Pack->$mname(), "method");
is(method Pack (), "method");
is(Pack->method, "method");
is(Pack->$mname, "method");
is(method Pack, "method");
is($obj->method("a","b","c"), "method,a,b,c");
is($obj->$mname("a","b","c"), "method,a,b,c");
is((method $obj ("a","b","c")), "method,a,b,c");
is((method $obj "a","b","c"), "method,a,b,c");
is($obj->method(0), "method,0");
is($obj->method(1), "method,1");
is($obj->method(), "method");
is($obj->$mname(), "method");
is((method $obj ()), "method");
is($obj->method, "method");
is($obj->$mname, "method");
is(method $obj, "method");
is( A->d, "C::d"); # Update hash table;
*B::d = \&D::d; # Import now.
is(A->d, "D::d"); # Update hash table;
{
local @A::ISA = qw(C); # Update hash table with split() assignment
is(A->d, "C::d");
$#A::ISA = -1;
is(eval { A->d } || "fail", "fail");
}
is(A->d, "D::d");
{
local *B::d;
eval 'sub B::d {"B::d1"}'; # Import now.
is(A->d, "B::d1"); # Update hash table;
undef &B::d;
is((eval { A->d }, ($@ =~ /Undefined subroutine/)), 1);
}
is(A->d, "D::d"); # Back to previous state
eval 'no warnings "redefine"; sub B::d {"B::d2"}'; # Import now.
is(A->d, "B::d2"); # Update hash table;
# What follows is hardly guarantied to work, since the names in scripts
# are already linked to "pruned" globs. Say, 'undef &B::d' if it were
# after 'delete $B::{d}; sub B::d {}' would reach an old subroutine.
undef &B::d;
delete $B::{d};
is(A->d, "C::d");
eval 'sub B::d {"B::d2.5"}';
A->d; # Update hash table;
my $glob = \delete $B::{d}; # non-void context; hang on to the glob
is(A->d, "C::d"); # Update hash table;
eval 'sub B::d {"B::d3"}'; # Import now.
is(A->d, "B::d3"); # Update hash table;
delete $B::{d};
*dummy::dummy = sub {}; # Mark as updated
is(A->d, "C::d");
eval 'sub B::d {"B::d4"}'; # Import now.
is(A->d, "B::d4"); # Update hash table;
delete $B::{d}; # Should work without any help too
is(A->d, "C::d");
{
local *C::d;
is(eval { A->d } || "nope", "nope");
}
is(A->d, "C::d");
*A::x = *A::d;
A->d;
is(eval { A->x } || "nope", "nope", 'cache should not follow synonyms');
my $counter;
eval <<'EOF';
sub C::e;
BEGIN { *B::e = \&C::e } # Shouldn't prevent AUTOLOAD in original pkg
sub Y::f;
$counter = 0;
@X::ISA = 'Y';
@Y::ISA = 'B';
sub B::AUTOLOAD {
my $c = ++$counter;
my $method = $B::AUTOLOAD;
my $msg = "B: In $method, $c";
eval "sub $method { \$msg }";
goto &$method;
}
sub C::AUTOLOAD {
my $c = ++$counter;
my $method = $C::AUTOLOAD;
my $msg = "C: In $method, $c";
eval "sub $method { \$msg }";
goto &$method;
}
EOF
is(A->e(), "C: In C::e, 1"); # We get a correct autoload
is(A->e(), "C: In C::e, 1"); # Which sticks
is(A->ee(), "B: In A::ee, 2"); # We get a generic autoload, method in top
is(A->ee(), "B: In A::ee, 2"); # Which sticks
is(Y->f(), "B: In Y::f, 3"); # We vivify a correct method
is(Y->f(), "B: In Y::f, 3"); # Which sticks
# This test is not intended to be reasonable. It is here just to let you
# know that you broke some old construction. Feel free to rewrite the test
# if your patch breaks it.
{
no warnings 'redefine';
*B::AUTOLOAD = sub {
use warnings;
my $c = ++$counter;
my $method = $::AUTOLOAD;
no strict 'refs';
*$::AUTOLOAD = sub { "new B: In $method, $c" };
goto &$::AUTOLOAD;
};
}
is(A->eee(), "new B: In A::eee, 4"); # We get a correct $autoload
is(A->eee(), "new B: In A::eee, 4"); # Which sticks
{
no strict 'refs';
no warnings 'deprecated';
# this test added due to bug discovery (in 5.004_04, fb73857aa0bfa8ed)
# Possibly kill this test now that defined @::array is finally properly
# deprecated?
is(defined(@{"unknown_package::ISA"}) ? "defined" : "undefined", "undefined");
}
# test that failed subroutine calls don't affect method calls
{
package A1;
sub foo { "foo" }
package A2;
@A2::ISA = 'A1';
package main;
is(A2->foo(), "foo");
is(do { eval 'A2::foo()'; $@ ? 1 : 0}, 1);
is(A2->foo(), "foo");
}
## This test was totally misguided. It passed before only because the
## code to determine if a package was loaded used to look for the hash
## %Foo::Bar instead of the package Foo::Bar:: -- and Config.pm just
## happens to export %Config.
# {
# is(do { use Config; eval 'Config->foo()';
# $@ =~ /^\QCan't locate object method "foo" via package "Config" at/ ? 1 : $@}, 1);
# is(do { use Config; eval '$d = bless {}, "Config"; $d->foo()';
# $@ =~ /^\QCan't locate object method "foo" via package "Config" at/ ? 1 : $@}, 1);
# }
# test error messages if method loading fails
my $e;
eval '$e = bless {}, "E::A"; E::A->foo()';
like ($@, qr/^\QCan't locate object method "foo" via package "E::A" at/);
eval '$e = bless {}, "E::B"; $e->foo()';
like ($@, qr/^\QCan't locate object method "foo" via package "E::B" at/);
eval 'E::C->foo()';
like ($@, qr/^\QCan't locate object method "foo" via package "E::C" (perhaps /);
eval 'UNIVERSAL->E::D::foo()';
like ($@, qr/^\QCan't locate object method "foo" via package "E::D" (perhaps /);
eval 'my $e = bless {}, "UNIVERSAL"; $e->E::E::foo()';
like ($@, qr/^\QCan't locate object method "foo" via package "E::E" (perhaps /);
$e = bless {}, "E::F"; # force package to exist
eval 'UNIVERSAL->E::F::foo()';
like ($@, qr/^\QCan't locate object method "foo" via package "E::F" at/);
eval '$e = bless {}, "UNIVERSAL"; $e->E::F::foo()';
like ($@, qr/^\QCan't locate object method "foo" via package "E::F" at/);
# TODO: we need some tests for the SUPER:: pseudoclass
# failed method call or UNIVERSAL::can() should not autovivify packages
is( $::{"Foo::"} || "none", "none"); # sanity check 1
is( $::{"Foo::"} || "none", "none"); # sanity check 2
is( UNIVERSAL::can("Foo", "boogie") ? "yes":"no", "no" );
is( $::{"Foo::"} || "none", "none"); # still missing?
is( Foo->UNIVERSAL::can("boogie") ? "yes":"no", "no" );
is( $::{"Foo::"} || "none", "none"); # still missing?
is( Foo->can("boogie") ? "yes":"no", "no" );
is( $::{"Foo::"} || "none", "none"); # still missing?
is( eval 'Foo->boogie(); 1' ? "yes":"no", "no" );
is( $::{"Foo::"} || "none", "none"); # still missing?
is(do { eval 'Foo->boogie()';
$@ =~ /^\QCan't locate object method "boogie" via package "Foo" (perhaps / ? 1 : $@}, 1);
eval 'sub Foo::boogie { "yes, sir!" }';
is( $::{"Foo::"} ? "ok" : "none", "ok"); # should exist now
is( Foo->boogie(), "yes, sir!");
# TODO: universal.t should test NoSuchPackage->isa()/can()
# This is actually testing parsing of indirect objects and undefined subs
# print foo("bar") where foo does not exist is not an indirect object.
# print foo "bar" where foo does not exist is an indirect object.
eval 'sub AUTOLOAD { "ok ", shift, "\n"; }';
ok(1);
# Bug ID 20010902.002
is(
eval q[
my $x = 'x'; # Lexical or package variable, 5.6.1 panics.
sub Foo::x : lvalue { $x }
Foo->$x = 'ok';
] || $@, 'ok'
);
# An autoloaded, inherited DESTROY may be invoked differently than normal
# methods, and has been known to give rise to spurious warnings
# eg <200203121600.QAA11064@gizmo.fdgroup.co.uk>
{
use warnings;
my $w = '';
local $SIG{__WARN__} = sub { $w = $_[0] };
sub AutoDest::Base::AUTOLOAD {}
@AutoDest::ISA = qw(AutoDest::Base);
{ my $x = bless {}, 'AutoDest'; }
$w =~ s/\n//g;
is($w, '');
}
# [ID 20020305.025] PACKAGE::SUPER doesn't work anymore
package main;
our @X;
package Amajor;
sub test {
push @main::X, 'Amajor', @_;
}
package Bminor;
use base qw(Amajor);
package main;
sub Bminor::test {
$_[0]->Bminor::SUPER::test('x', 'y');
push @main::X, 'Bminor', @_;
}
Bminor->test('y', 'z');
is("@X", "Amajor Bminor x y Bminor Bminor y z");
package main;
for my $meth (['Bar', 'Foo::Bar'],
['SUPER::Bar', 'main::SUPER::Bar'],
['Xyz::SUPER::Bar', 'Xyz::SUPER::Bar'])
{
fresh_perl_is(<<EOT,
package UNIVERSAL; sub AUTOLOAD { my \$c = shift; print "\$c \$AUTOLOAD\\n" }
package Xyz;
package main; Foo->$meth->[0]();
EOT
"Foo $meth->[1]",
{ switches => [ '-w' ] },
"check if UNIVERSAL::AUTOLOAD works",
);
}
# Test for #71952: crash when looking for a nonexistent destructor
# Regression introduced by fbb3ee5af3d4
{
fresh_perl_is(<<'EOT',
sub M::DESTROY; bless {}, "M" ; print "survived\n";
EOT
"survived",
{},
"no crash with a declared but missing DESTROY method"
);
}
# Test for calling a method on a packag name return by a magic variable
sub TIESCALAR{bless[]}
sub FETCH{"main"}
my $kalled;
sub bolgy { ++$kalled; }
tie my $a, "";
$a->bolgy;
is $kalled, 1, 'calling a class method via a magic variable';
{
package NulTest;
sub method { 1 }
package main;
eval {
NulTest->${ \"method\0Whoops" };
};
like $@, qr/Can't locate object method "method\0Whoops" via package "NulTest" at/,
"method lookup is nul-clean";
*NulTest::AUTOLOAD = sub { our $AUTOLOAD; return $AUTOLOAD };
like(NulTest->${ \"nul\0test" }, "nul\0test", "AUTOLOAD is nul-clean");
}
{
fresh_perl_is(
q! sub T::DESTROY { $x = $_[0]; } bless [], "T";!,
"DESTROY created new reference to dead object 'T' during global destruction.",
{},
"DESTROY creating a new reference to the object generates a warning."
);
}
# [perl #43663]
{
$::{"Just"} = \1;
sub Just::a_japh { return "$_[0] another Perl hacker," }
is eval { "Just"->a_japh }, "Just another Perl hacker,",
'constants do not interfere with class methods';
}
# [perl #109264]
{
no strict 'vars';
sub bliggles { 1 }
sub lbiggles :lvalue { index "foo", "f" }
ok eval { main->bliggles(my($foo,$bar)) },
'foo->bar(my($foo,$bar)) is not called in lvalue context';
ok eval { main->bliggles(our($foo,$bar)) },
'foo->bar(our($foo,$bar)) is not called in lvalue context';
ok eval { main->bliggles(local($foo,$bar)) },
'foo->bar(local($foo,$bar)) is not called in lvalue context';
ok eval { () = main->lbiggles(my($foo,$bar)); 1 },
'foo->lv(my($foo,$bar)) is not called in lvalue context';
ok eval { () = main->lbiggles(our($foo,$bar)); 1 },
'foo->lv(our($foo,$bar)) is not called in lvalue context';
ok eval { () = main->lbiggles(local($foo,$bar)); 1 },
'foo->lv(local($foo,$bar)) is not called in lvalue context';
}
{
# AUTOLOAD and DESTROY can be declared without a leading sub,
# like BEGIN and friends.
package NoSub;
eval 'AUTOLOAD { our $AUTOLOAD; return $AUTOLOAD }';
::ok( !$@, "AUTOLOAD without a leading sub is legal" );
eval "DESTROY { ::pass( q!DESTROY without a leading sub is legal and gets called! ) }";
{
::ok( NoSub->can("AUTOLOAD"), "...and sets up an AUTOLOAD normally" );
::is( eval { NoSub->bluh }, "NoSub::bluh", "...which works as expected" );
}
{ bless {}, "NoSub"; }
}