4 no strict 'refs'; # we do a lot of this
6 no warnings 'redefine'; # we do a lot of this
7 no warnings 'prototype'; # we do a lot of this
20 sub foo { return $_[1]+1 };
22 package MCTest::Derived;
23 our @ISA = qw/MCTest::Base/;
25 package Foo; our @FOO = qw//;
28 # These are various ways of re-defining MCTest::Base::foo and checking whether the method is cached when it shouldn't be
30 sub { is(MCTest::Derived->foo(0), 1); },
31 sub { eval 'sub MCTest::Base::foo { return $_[1]+2 }'; is(MCTest::Derived->foo(0), 2); },
32 sub { eval 'sub MCTest::Base::foo($) { return $_[1]+3 }'; is(MCTest::Derived->foo(0), 3); },
33 sub { eval 'sub MCTest::Base::foo($) { 4 }'; is(MCTest::Derived->foo(0), 4); },
34 sub { *MCTest::Base::foo = sub { $_[1]+5 }; is(MCTest::Derived->foo(0), 5); },
35 sub { local *MCTest::Base::foo = sub { $_[1]+6 }; is(MCTest::Derived->foo(0), 6); },
36 sub { is(MCTest::Derived->foo(0), 5); },
37 sub { sub FFF { $_[1]+7 }; local *MCTest::Base::foo = *FFF; is(MCTest::Derived->foo(0), 7); },
38 sub { is(MCTest::Derived->foo(0), 5); },
39 sub { sub DDD { $_[1]+8 }; *MCTest::Base::foo = *DDD; is(MCTest::Derived->foo(0), 8); },
40 sub { *ASDF::asdf = sub { $_[1]+9 }; *MCTest::Base::foo = \&ASDF::asdf; is(MCTest::Derived->foo(0), 9); },
41 sub { undef *MCTest::Base::foo; eval { MCTest::Derived->foo(0) }; like($@, qr/locate object method/); },
42 sub { eval "sub MCTest::Base::foo($);"; *MCTest::Base::foo = \&ASDF::asdf; is(MCTest::Derived->foo(0), 9); },
43 sub { *XYZ = sub { $_[1]+10 }; ${MCTest::Base::}{foo} = \&XYZ; is(MCTest::Derived->foo(0), 10); },
44 sub { ${MCTest::Base::}{foo} = sub { $_[1]+11 }; is(MCTest::Derived->foo(0), 11); },
46 sub { undef *MCTest::Base::foo; eval { MCTest::Derived->foo(0) }; like($@, qr/locate object method/); },
47 sub { eval 'package MCTest::Base; sub foo { $_[1]+12 }'; is(MCTest::Derived->foo(0), 12); },
48 sub { eval 'package ZZZ; sub foo { $_[1]+13 }'; *MCTest::Base::foo = \&ZZZ::foo; is(MCTest::Derived->foo(0), 13); },
49 sub { ${MCTest::Base::}{foo} = sub { $_[1]+14 }; is(MCTest::Derived->foo(0), 14); },
50 # 5.8.8 fails this one
51 sub { undef *{MCTest::Base::}; eval { MCTest::Derived->foo(0) }; like($@, qr/locate object method/); },
52 sub { eval 'package MCTest::Base; sub foo { $_[1]+15 }'; is(MCTest::Derived->foo(0), 15); },
53 sub { undef %{MCTest::Base::}; eval { MCTest::Derived->foo(0) }; like($@, qr/locate object method/); },
54 sub { eval 'package MCTest::Base; sub foo { $_[1]+16 }'; is(MCTest::Derived->foo(0), 16); },
55 sub { %{MCTest::Base::} = (); eval { MCTest::Derived->foo(0) }; like($@, qr/locate object method/); },
56 sub { eval 'package MCTest::Base; sub foo { $_[1]+17 }'; is(MCTest::Derived->foo(0), 17); },
57 # 5.8.8 fails this one too
58 sub { *{MCTest::Base::} = *{Foo::}; eval { MCTest::Derived->foo(0) }; like($@, qr/locate object method/); },
59 sub { *MCTest::Derived::foo = \&MCTest::Base::foo; eval { MCTest::Derived::foo(0,0) }; ok(!$@); undef *MCTest::Derived::foo },
60 sub { eval 'package MCTest::Base; sub foo { $_[1]+18 }'; is(MCTest::Derived->foo(0), 18); },
62 # Redefining through a glob alias
63 sub { *A = *{'MCTest::Base::foo'}; eval 'sub A { $_[1]+19 }';
64 is(MCTest::Derived->foo(0), 19,
65 'redefining sub through glob alias via decl'); },
67 skip_if_miniperl("no XS"); require XS::APItest;
68 *A = *{'MCTest::Base::foo'};
69 XS::APItest::newCONSTSUB(\%main::, "A", 0, 20);
70 is (MCTest::Derived->foo(0), 20,
71 'redefining sub through glob alias via newXS');
73 sub { undef *{'MCTest::Base::foo'}; *A = *{'MCTest::Base::foo'};
74 eval { no warnings 'once'; local *UNIVERSAL::foo = sub {96};
75 MCTest::Derived->foo };
77 eval { MCTest::Derived->foo };
78 like($@, qr/Undefined subroutine/,
79 'redefining sub through glob alias via stub vivification'); },
80 sub { *A = *{'MCTest::Base::foo'};
81 local *A = sub { 21 };
82 is(MCTest::Derived->foo, 21,
83 'redef sub through glob alias via local cv-to-glob assign'); },
84 sub { *A = *{'MCTest::Base::foo'};
85 eval 'sub MCTest::Base::foo { 22 }';
86 { local *A = sub { 23 }; MCTest::Derived->foo }
87 is(MCTest::Derived->foo, 22,
88 'redef sub through glob alias via localisation unwinding'); },
89 sub { *A = *{'MCTest::Base::foo'}; *A = sub { 24 };
90 is(MCTest::Derived->foo(0), 24,
91 'redefining sub through glob alias via cv-to-glob assign'); },
94 plan(tests => scalar(@testsubs));
96 $_->() for (@testsubs);