This is a live mirror of the Perl 5 development currently hosted at https://github.com/perl/perl5
[perl #113710] Make __SUB__ work in sort block
[perl5.git] / t / op / current_sub.t
CommitLineData
84ed0108
FC
1#!./perl
2
3BEGIN {
4 chdir 't';
5 @INC = qw(../lib);
6 require './test.pl';
d7ab38e8 7 plan (tests => 17);
84ed0108
FC
8}
9
84ed0108
FC
10is __SUB__, "__SUB__", '__SUB__ is a bareword outside of use feature';
11
12{
13 use v5.15;
14 is __SUB__, undef, '__SUB__ under use v5.16';
15}
16
17use feature 'current_sub';
18
19is __SUB__, undef, '__SUB__ returns undef outside of a subroutine';
20is +()=__SUB__, 1, '__SUB__ returns undef in list context';
21
22sub foo { __SUB__ }
23is foo, \&foo, '__SUB__ inside a named subroutine';
24is foo->(), \&foo, '__SUB__ is callable';
25is ref foo, 'CODE', '__SUB__ is a code reference';
26
27my $subsub = sub { __SUB__ };
28is &$subsub, $subsub, '__SUB__ inside anonymous non-closure';
29
30my @subsubs;
31for my $x(1..3) {
32 push @subsubs, sub { return $x if @_; __SUB__ };
33}
34# Don’t loop here; we need to avoid interactions between the iterator
35# and the closure.
36is $subsubs[0]()(0), 1, '__SUB__ inside closure (1)';
37is $subsubs[1]()(0), 2, '__SUB__ inside closure (2)';
38is $subsubs[2]()(0), 3, '__SUB__ inside closure (3)';
e157a82b
FC
39
40BEGIN {
41 return "begin 1" if @_;
42 is CORE::__SUB__->(0), "begin 1", 'in BEGIN block'
43}
44BEGIN {
45 return "begin 2" if @_;
46 is &CORE::__SUB__->(0), "begin 2", 'in BEGIN block via & (unoptimised)'
47}
d7ab38e8
FC
48
49sub bar;
50sub bar {
51 () = sort {
52 is CORE::__SUB__, \&bar, 'in sort block in sub with forw decl'
53 } 1,2;
54}
55bar();
56sub bur;
57sub bur {
58 () = sort {
59 is &CORE::__SUB__, \&bur, '& in sort block in sub with forw decl'
60 } 1,2;
61}
62bur();
63
64sub squog;
65sub squog {
66 grep { is CORE::__SUB__, \&squog,
67 'in grep block in sub with forw decl'
68 } 1;
69}
70squog();
71sub squag;
72sub squag {
73 grep { is &CORE::__SUB__, \&squag,
74 '& in grep block in sub with forw decl'
75 } 1;
76}
77squag();