summaryrefslogtreecommitdiff
path: root/lib/Exporter.t
blob: d2a9289c61c54d9877c8b1d3bf24208a7d27ffe7 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
#!./perl

BEGIN {
    chdir 't' if -d 't';
    @INC = '../lib';
}

# Can't use Test::Simple/More, they depend on Exporter.
my $test = 1;
sub ok ($;$) {
    my($ok, $name) = @_;

    # You have to do it this way or VMS will get confused.
    printf "%sok %d%s\n", ($ok ? '' : 'not '), $test,
      (defined $name ? " - $name" : '');

    printf "# Failed test at line %d\n", (caller)[2] unless $ok;
    
    $test++;
    return $ok;
}


print "1..24\n";
require Exporter;
ok( 1, 'Exporter compiled' );


BEGIN {
    # Methods which Exporter says it implements.
    @Exporter_Methods = qw(import
                           export_to_level
                           require_version
                           export_fail
                          );
}


package Testing;
require Exporter;
@ISA = qw(Exporter);

# Make sure Testing can do everything its supposed to.
foreach my $meth (@::Exporter_Methods) {
    ::ok( Testing->can($meth), "subclass can $meth()" );
}

%EXPORT_TAGS = (
                This => [qw(stuff %left)],
                That => [qw(Above the @wailing)],
                tray => [qw(Fasten $seatbelt)],
               );
@EXPORT    = qw(lifejacket is);
@EXPORT_OK = qw(under &your $seat);
$VERSION = '1.05';

::ok( Testing->require_version(1.05),   'require_version()' );
eval { Testing->require_version(1.11); 1 };
::ok( $@,                               'require_version() fail' );
::ok( Testing->require_version(0),      'require_version(0)' );

sub lifejacket  { 'lifejacket'  }
sub stuff       { 'stuff'       }
sub Above       { 'Above'       }
sub the         { 'the'         }
sub Fasten      { 'Fasten'      }
sub your        { 'your'        }
sub under       { 'under'       }
use vars qw($seatbelt $seat @wailing %left);
$seatbelt = 'seatbelt';
$seat     = 'seat';
@wailing = qw(AHHHHHH);
%left = ( left => "right" );

BEGIN {*is = \&Is};
sub Is { 'Is' };

Exporter::export_ok_tags;

my %tags     = map { $_ => 1 } map { @$_ } values %EXPORT_TAGS;
my %exportok = map { $_ => 1 } @EXPORT_OK;
my $ok = 1;
foreach my $tag (keys %tags) {
    $ok = exists $exportok{$tag};
}
::ok( $ok, 'export_ok_tags()' );


package Foo;
Testing->import;

::ok( defined &lifejacket,      'simple import' );

my $got = eval {&lifejacket};
::ok ( $@ eq "", 'check we can call the imported subroutine')
  or print STDERR "# \$\@ is $@\n";
::ok ( $got eq 'lifejacket', 'and that it gave the correct result')
  or print STDERR "# expected 'lifejacket', got " .
  (defined $got ? "'$got'" : "undef") . "\n";

# The string eval is important. It stops $Foo::{is} existing when
# Testing->import is called.
::ok( eval "defined &is",
      "Import a subroutine where exporter must create the typeglob" );
my $got = eval "&is";
::ok ( $@ eq "", 'check we can call the imported autoloaded subroutine')
  or chomp ($@), print STDERR "# \$\@ is $@\n";
::ok ( $got eq 'Is', 'and that it gave the correct result')
  or print STDERR "# expected 'Is', got " .
  (defined $got ? "'$got'" : "undef") . "\n";


package Bar;
my @imports = qw($seatbelt &Above stuff @wailing %left);
Testing->import(@imports);

::ok( (!grep { eval "!defined $_" } map({ /^\w/ ? "&$_" : $_ } @imports)),
      'import by symbols' );


package Yar;
my @tags = qw(:This :tray);
Testing->import(@tags);

::ok( (!grep { eval "!defined $_" } map { /^\w/ ? "&$_" : $_ }
             map { @$_ } @{$Testing::EXPORT_TAGS{@tags}}),
      'import by tags' );


package Arrr;
Testing->import(qw(!lifejacket));

::ok( !defined &lifejacket,     'deny import by !' );


package Mars;
Testing->import('/e/');

::ok( (!grep { eval "!defined $_" } map { /^\w/ ? "&$_" : $_ }
            grep { /e/ } @Testing::EXPORT, @Testing::EXPORT_OK),
      'import by regex');


package Venus;
Testing->import('!/e/');

::ok( (!grep { eval "defined $_" } map { /^\w/ ? "&$_" : $_ }
            grep { /e/ } @Testing::EXPORT, @Testing::EXPORT_OK),
      'deny import by regex');
::ok( !defined &lifejacket, 'further denial' );


package More::Testing;
@ISA = qw(Exporter);
$VERSION = 0;
eval { More::Testing->require_version(0); 1 };
::ok(!$@,       'require_version(0) and $VERSION = 0');


package Yet::More::Testing;
@ISA = qw(Exporter);
$VERSION = 0;
eval { Yet::More::Testing->require_version(10); 1 };
::ok($@ !~ /\(undef\)/,       'require_version(10) and $VERSION = 0');


my $warnings;
BEGIN {
    $SIG{__WARN__} = sub { $warnings = join '', @_ };
    package Testing::Unused::Vars;
    @ISA = qw(Exporter);
    @EXPORT = qw(this $TODO that);

    package Foo;
    Testing::Unused::Vars->import;
}

::ok( !$warnings, 'Unused variables can be exported without warning' ) ||
  print "# $warnings\n";