#!./perl -w
#
# test method calls and autoloading.
#
BEGIN {
chdir 't' if -d 't';
@INC = qw(. ../lib lib);
require "test.pl";
}
use strict;
no warnings 'once';
plan(tests => 146);
@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/);
# SUPER:: pseudoclass
@Saab::ISA = "Souper";
sub Souper::method { @_ }
@OtherSaab::ISA = "OtherSouper";
sub OtherSouper::method { "Isidore Ropen, Draft Manager" }
{
my $o = bless [], "Saab";
package Saab;
my @ret = $o->SUPER::method('whatever');
::is $ret[0], $o, 'object passed to SUPER::method';
::is $ret[1], 'whatever', 'argument passed to SUPER::method';
@ret = $o->SUPER'method('whatever');
::is $ret[0], $o, "object passed to SUPER'method";
::is $ret[1], 'whatever', "argument passed to SUPER'method";
@ret = Saab->SUPER::method;
::is $ret[0], 'Saab', "package name passed to SUPER::method";
@ret = OtherSaab->SUPER::method;
::is $ret[0], 'OtherSaab',
"->SUPER::method uses current package, not invocant";
}
() = *SUPER::;
{
local our @ISA = "Souper";
is eval { (main->SUPER::method)[0] }, 'main',
'Mentioning *SUPER:: does not stop ->SUPER from working in main';
}
{
BEGIN {
*Mover:: = *Mover2::;
*Mover2:: = *foo;
}
package Mover;
no strict;
# Not our(@ISA), because the bug we are testing for interacts with an
# our() bug that cancels this bug out.
@ISA = 'door';
sub door::dohtem { 'dohtem' }
::is eval { Mover->SUPER::dohtem; }, 'dohtem',
'SUPER inside moved package';
undef *door::dohtem;
*door::dohtem = sub { 'method' };
::is eval { Mover->SUPER::dohtem; }, 'method',
'SUPER inside moved package respects method changes';
}
# 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"; }
}
eval { () = 3; new {} };
like $@,
qr/^Can't call method "new" without a package or object reference/,
'Err msg from new{} when stack contains a number';
eval { () = "foo"; new {} };
like $@,
qr/^Can't call method "new" without a package or object reference/,
'Err msg from new{} when stack contains a word';
eval { () = undef; new {} };
like $@,
qr/^Can't call method "new" without a package or object reference/,
'Err msg from new{} when stack contains undef';
package egakacp {
our @ISA = 'ASI';
sub ASI::m { shift; "@_" };
my @a = (bless([]), 'arg');
my $r = SUPER::m{@a};
::is $r, 'arg', 'method{@array}';
$r = SUPER::m{}@a;
::is $r, 'arg', 'method{}@array';
$r = SUPER::m{@a}"b";
::is $r, 'arg b', 'method{@array}$more_args';
}
# [perl #114924] SUPER->method
@SUPER::ISA = "SUPPER";
sub SUPPER::foo { "supper" }
is "SUPER"->foo, 'supper', 'SUPER->method';
sub flomp { "flimp" }
sub main::::flomp { "flump" }
is "::"->flomp, 'flump', 'method call on ::';
is "::main"->flomp, 'flimp', 'method call on ::main';
eval { ""->flomp };
like $@,
qr/^Can't call method "flomp" without a package or object reference/,
'method call on empty string';
is "3foo"->CORE::uc, '3FOO', '"3foo"->CORE::uc';
{ no strict; @{"3foo::ISA"} = "CORE"; }
is "3foo"->uc, '3FOO', '"3foo"->uc (autobox style!)';
# *foo vs (\*foo)
sub myclass::squeak { 'eek' }
eval { *myclass->squeak };
like $@,
qr/^Can't call method "squeak" without a package or object reference/,
'method call on typeglob ignores package';
eval { (\*myclass)->squeak };
like $@,
qr/^Can't call method "squeak" on unblessed reference/,
'method call on \*typeglob';
*stdout2 = *STDOUT; # stdout2 now stringifies as *main::STDOUT
sub IO::Handle::self { $_[0] }
# This used to stringify the glob:
is *stdout2->self, (\*stdout2)->self,
'*glob->method is equiv to (\*glob)->method';
sub { $_[0] = *STDOUT; is $_[0]->self, \$::h{k}, '$pvlv_glob->method' }
->($::h{k});
# Test that PL_stashcache doesn't change the resolution behaviour for file
# handles and package names.
SKIP: {
skip_if_miniperl('file handles as methods requires loading IO::File', 26);
require Fcntl;
foreach (qw (Count::DATA Count Colour::H1 Color::H1 C3::H1)) {
eval qq{
package $_;
sub getline {
return "method in $_";
}
1;
} or die $@;
}
BEGIN {
*The::Count:: = \*Count::;
}
is(Count::DATA->getline(), 'method in Count::DATA',
'initial resolution is a method');
is(The::Count::DATA->getline(), 'method in Count::DATA',
'initial resolution is a method in aliased classes');
require Count;
is(Count::DATA->getline(), "one! ha ha ha\n", 'file handles take priority');
is(The::Count::DATA->getline(), "two! ha ha ha\n",
'file handles take priority in aliased classes');
eval q{close Count::DATA} or die $!;
{
no warnings 'io';
is(Count::DATA->getline(), undef,
"closing a file handle doesn't change object resolution");
is(The::Count::DATA->getline(), undef,
"closing a file handle doesn't change object resolution in aliased classes");
}
undef *Count::DATA;
is(Count::DATA->getline(), 'method in Count::DATA',
'undefining the typeglob does change object resolution');
is(The::Count::DATA->getline(), 'method in Count::DATA',
'undefining the typeglob does change object resolution in aliased classes');
is(Count->getline(), 'method in Count',
'initial resolution is a method');
is(The::Count->getline(), 'method in Count',
'initial resolution is a method in aliased classes');
eval q{
open Count, '<', $INC{'Count.pm'}
or die "Can't open $INC{'Count.pm'}: $!";
1;
} or die $@;
is(Count->getline(), "# zero! ha ha ha\n", 'file handles take priority');
is(The::Count->getline(), 'method in Count', 'but not in an aliased class');
eval q{close Count} or die $!;
{
no warnings 'io';
is(Count->getline(), undef,
"closing a file handle doesn't change object resolution");
}
undef *Count;
is(Count->getline(), 'method in Count',
'undefining the typeglob does change object resolution');
open Colour::H1, 'op/method.t' or die $!;
while (<Colour::H1>) {
last if /^__END__/;
}
open CLOSED, 'TEST' or die $!;
close CLOSED or die $!;
my $fh_start = tell Colour::H1;
my $data_start = tell DATA;
is(Colour::H1->getline(), <DATA>, 'read from a file');
is(Color::H1->getline(), 'method in Color::H1',
'initial resolution is a method');
*Color::H1 = *Colour::H1{IO};
is(Colour::H1->getline(), <DATA>, 'read from a file');
is(Color::H1->getline(), <DATA>,
'file handles take priority after io-to-typeglob assignment');
*Color::H1 = *CLOSED{IO};
{
no warnings 'io';
is(Color::H1->getline(), undef,
"assigning a closed a file handle doesn't change object resolution");
}
undef *Color::H1;
is(Color::H1->getline(), 'method in Color::H1',
'undefining the typeglob does change object resolution');
*Color::H1 = *Colour::H1;
is(Color::H1->getline(), <DATA>,
'file handles take priority after typeglob-to-typeglob assignment');
seek Colour::H1, $fh_start, Fcntl::SEEK_SET() or die $!;
seek DATA, $data_start, Fcntl::SEEK_SET() or die $!;
is(Colour::H1->getline(), <DATA>, 'read from a file');
is(C3::H1->getline(), 'method in C3::H1', 'intial resolution is a method');
*Copy:: = \*C3::;
*C3:: = \*Colour::;
is(Colour::H1->getline(), <DATA>, 'read from a file');
is(C3::H1->getline(), <DATA>,
'file handles take priority after stash aliasing');
*C3:: = \*Copy::;
is(C3::H1->getline(), 'method in C3::H1',
'restoring the stash returns to a method');
}
__END__
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