1#!./perl
2
3use strict;
4use Test::More tests => 18;
5
6my $v_plus  = $] + 1;
7my $v_minus = $] - 1;
8
9unless (eval 'use open ":std"; 1') {
10  # pretend that open.pm is present
11  $INC{'open.pm'} = 'open.pm';
12  eval 'sub open::foo{}';		# Just in case...
13}
14
15{
16    no strict;
17
18    is( eval "use if ($v_minus > \$]), strict => 'subs'; \${'f'} = 12", 12,
19        '"use if" with a false condition, fake pragma');
20    is( eval "use if ($v_minus > \$]), strict => 'refs'; \${'f'} = 12", 12,
21        '"use if" with a false condition and a pragma');
22
23    is( eval "use if ($v_plus > \$]), strict => 'subs'; \${'f'} = 12", 12,
24        '"use if" with a true condition, fake pragma');
25
26    is( eval "use if ($v_plus > \$]), strict => 'refs'; \${'f'} = 12", undef,
27        '"use if" with a true condition and a pragma');
28    like( $@, qr/while "strict refs" in use/, 'expected error message'),
29
30    # Old version had problems with the module name 'open', which is a keyword too
31    # Use 'open' =>, since pre-5.6.0 could interpret differently
32    is( (eval "use if ($v_plus > \$]), 'open' => IN => ':crlf'; 12" || 0), 12,
33        '"use if" with open');
34
35    is(eval "use if ($v_plus > \$])", undef,
36       "Too few args to 'use if' returns <undef>");
37    like($@, qr/Too few arguments to 'use if'/, "  ... and returns correct error");
38
39    is(eval "no if ($v_plus > \$])", undef,
40       "Too few args to 'no if' returns <undef>");
41    like($@, qr/Too few arguments to 'no if'/, "  ... and returns correct error");
42}
43
44{
45    note(q|RT 132732: strict 'subs'|);
46    use strict "subs";
47
48    {
49        SKIP: {
50            unless ($] >= 5.018) {
51                skip "bigrat apparently not testable prior to perl-5.18", 4;
52            }
53            note(q|strict "subs" : 'use if' : condition false|);
54            eval "use if (0 > 1), q|bigrat|, qw(hex oct);";
55            ok (! main->can('hex'), "Cannot call bigrat::hex() in importing package");
56            ok (! main->can('oct'), "Cannot call bigrat::oct() in importing package");
57
58            note(q|strict "subs" : 'use if' : condition true|);
59            eval "use if (1 > 0), q|bigrat|, qw(hex oct);";
60            ok (  main->can('hex'), "Can call bigrat::hex() in importing package");
61            ok (  main->can('oct'), "Can call bigrat::oct() in importing package");
62        }
63    }
64
65    {
66        note(q|strict "subs" : 'no if' : condition variable|);
67        note(($] >= 5.022) ? "Recent enough Perl: $]" : "Older Perl: $]");
68        use warnings;
69        SKIP: {
70            unless ($] >= 5.022) {
71                skip "Redundant argument warning not available in pre-5.22 perls", 4;
72            }
73
74            {
75                no if $] >= 5.022, q|warnings|, qw(redundant);
76                my ($test, $result, $warn);
77                local $SIG{__WARN__} = sub { $warn = shift };
78                $test = { fmt  => "%s", args => [ qw( x y ) ] };
79                $result = sprintf $test->{fmt}, @{$test->{args}};
80                is($result, $test->{args}->[0], "Got expected string");
81                ok(! $warn, "Redundant argument warning suppressed");
82            }
83
84            {
85                use if $] >= 5.022, q|warnings|, qw(redundant);
86                my ($test, $result, $warn);
87                local $SIG{__WARN__} = sub { $warn = shift };
88                $test = { fmt  => "%s", args => [ qw( x y ) ] };
89                $result = sprintf $test->{fmt}, @{$test->{args}};
90                is($result, $test->{args}->[0], "Got expected string");
91                like($warn, qr/Redundant argument in sprintf/,
92                    "Redundant argument warning generated and captured");
93            }
94        }
95    }
96}
97