use strict;
use warnings;
-require q(./test.pl); plan(tests => 40);
+BEGIN { require q(./test.pl); } plan(tests => 59);
+
+require mro;
{
package MRO_A;
ok(mro::is_universal('MRO_B'));
@UNIVERSAL::ISA = ();
-ok(mro::is_universal('MRO_B'));
+ok(!mro::is_universal('MRO_B'));
# is_universal, get_mro, and get_linear_isa should
-# handle non-existant packages sanely
+# handle non-existent packages sanely
ok(!mro::is_universal('Does_Not_Exist'));
is(mro::get_mro('Also_Does_Not_Exist'), 'dfs');
ok(eq_array(
is($stk_obj->foo(3), 6);
}
+{
+ {
+ # assigning @ISA via arrayref to globref RT 60220
+ package P1;
+ sub new { bless {}, shift }
+
+ package P2;
+ }
+ *{P2::ISA} = [ 'P1' ];
+ my $foo = P2->new;
+ ok(!eval { $foo->bark }, "no bark method");
+ no warnings 'once'; # otherwise it'll bark about P1::bark used only once
+ *{P1::bark} = sub { "[bark]" };
+ is(scalar eval { $foo->bark }, "[bark]", "can bark now");
+}
+
+{
+ # assigning @ISA via arrayref then modifying it RT 72866
+ {
+ package Q1;
+ sub foo { }
+
+ package Q2;
+ sub bar { }
+
+ package Q3;
+ }
+ push @Q3::ISA, "Q1";
+ can_ok("Q3", "foo");
+ *Q3::ISA = [];
+ push @Q3::ISA, "Q1";
+ can_ok("Q3", "foo");
+ *Q3::ISA = [];
+ push @Q3::ISA, "Q2";
+ can_ok("Q3", "bar");
+ ok(!Q3->can("foo"), "can't call foo method any longer");
+}
+
+{
+ # test mro::method_changed_in
+ my $count = mro::get_pkg_gen("MRO_A");
+ mro::method_changed_in("MRO_A");
+ my $count_new = mro::get_pkg_gen("MRO_A");
+
+ is($count_new, $count + 1);
+}
+
+{
+ # test if we can call mro::invalidate_all_method_caches;
+ eval {
+ mro::invalidate_all_method_caches();
+ };
+ is($@, "");
+}
+
+{
+ # @main::ISA
+ no warnings 'once';
+ @main::ISA = 'parent';
+ my $output = '';
+ *parent::do = sub { $output .= 'parent' };
+ *parent2::do = sub { $output .= 'parent2' };
+ main->do;
+ @main::ISA = 'parent2';
+ main->do;
+ is $output, 'parentparent2', '@main::ISA is magical';
+}
+
+{
+ # Undefining *ISA, then modifying @ISA
+ # This broke Class::Trait. See [perl #79024].
+ {package Class::Trait::Base}
+ no strict 'refs';
+ undef *{"Extra::TSpouse::ISA"};
+ 'Extra::TSpouse'->isa('Class::Trait::Base'); # cache the mro
+ unshift @{"Extra::TSpouse::ISA"}, 'Class::Trait::Base';
+ ok 'Extra::TSpouse'->isa('Class::Trait::Base'),
+ 'a isa b after undef *a::ISA and @a::ISA modification';
+}
+
+{
+ # Deleting $package::{ISA}
+ # Broken in 5.10.0; fixed in 5.13.7
+ @Blength::ISA = 'Bladd';
+ delete $Blength::{ISA};
+ ok !Blength->isa("Bladd"), 'delete $package::{ISA}';
+}
+
+{
+ # Undefining stashes
+ @Thrext::ISA = "Thwit";
+ @Thwit::ISA = "Sile";
+ undef %Thwit::;
+ ok !Thrext->isa('Sile'), 'undef %package:: updates subclasses';
+}
+
+{
+ # Obliterating @ISA via glob assignment
+ # Broken in 5.14.0; fixed in 5.17.2
+ @Gwythaint::ISA = "Fantastic::Creature";
+ undef *This_glob_haD_better_not_exist; # paranoia; must have no array
+ *Gwythaint::ISA = *This_glob_haD_better_not_exist;
+ ok !Gwythaint->isa("Fantastic::Creature"),
+ 'obliterating @ISA via glob assignment';
+}
+
+{
+ # Autovivifying @ISA via @{*ISA}
+ no warnings;
+ undef *fednu::ISA;
+ @{*fednu::ISA} = "pyfg";
+ ok +fednu->isa("pyfg"), 'autovivifying @ISA via *{@ISA}';
+}
+
+{
+ sub Detached::method;
+ my $h = delete $::{"Detached::"};
+ eval { local *Detached::method };
+ is $@, "", 'localising gv-with-cv belonging to detached package';
+}
+
+{
+ # *ISA localisation
+ @il::ISA = "ilsuper";
+ sub ilsuper::can { "puree" }
+ sub il::tomatoes;
+ {
+ local *il::ISA;
+ is +il->can("tomatoes"), \&il::tomatoes, 'local *ISA';
+ }
+ is "il"->can("tomatoes"), "puree", 'local *ISA unwinding';
+ {
+ local *il::ISA = [];
+ is +il->can("tomatoes"), \&il::tomatoes, 'local *ISA = []';
+ }
+ is "il"->can("tomatoes"), "puree", 'local *ISA=[] unwinding';
+}