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[perl5.git] / lib / Exporter.t
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2ee1d506 1#!perl -w
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2
3BEGIN {
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4 if( $ENV{PERL_CORE} ) {
5 chdir 't' if -d 't';
6 @INC = '../lib';
7 }
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8}
9
9ebf09bc 10# Can't use Test::Simple/More, they depend on Exporter.
452617c3 11my $test;
94dd7035 12sub ok ($;$) {
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13 my($ok, $name) = @_;
14
15 # You have to do it this way or VMS will get confused.
16 printf "%sok %d%s\n", ($ok ? '' : 'not '), $test,
17 (defined $name ? " - $name" : '');
18
19 printf "# Failed test at line %d\n", (caller)[2] unless $ok;
20
21 $test++;
22 return $ok;
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23}
24
25
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26BEGIN {
27 $test = 1;
3e927c50 28 print "1..30\n";
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29 require Exporter;
30 ok( 1, 'Exporter compiled' );
31}
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32
33
34BEGIN {
35 # Methods which Exporter says it implements.
36 @Exporter_Methods = qw(import
37 export_to_level
38 require_version
39 export_fail
40 );
41}
42
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43
44package Testing;
45require Exporter;
46@ISA = qw(Exporter);
47
48# Make sure Testing can do everything its supposed to.
49foreach my $meth (@::Exporter_Methods) {
50 ::ok( Testing->can($meth), "subclass can $meth()" );
51}
52
53%EXPORT_TAGS = (
54 This => [qw(stuff %left)],
55 That => [qw(Above the @wailing)],
56 tray => [qw(Fasten $seatbelt)],
57 );
d7341064 58@EXPORT = qw(lifejacket is);
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59@EXPORT_OK = qw(under &your $seat);
60$VERSION = '1.05';
61
62::ok( Testing->require_version(1.05), 'require_version()' );
63eval { Testing->require_version(1.11); 1 };
64::ok( $@, 'require_version() fail' );
65::ok( Testing->require_version(0), 'require_version(0)' );
66
67sub lifejacket { 'lifejacket' }
68sub stuff { 'stuff' }
69sub Above { 'Above' }
70sub the { 'the' }
71sub Fasten { 'Fasten' }
72sub your { 'your' }
73sub under { 'under' }
74use vars qw($seatbelt $seat @wailing %left);
75$seatbelt = 'seatbelt';
76$seat = 'seat';
77@wailing = qw(AHHHHHH);
78%left = ( left => "right" );
79
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80BEGIN {*is = \&Is};
81sub Is { 'Is' };
94dd7035 82
09e96b99 83Exporter::export_ok_tags();
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84
85my %tags = map { $_ => 1 } map { @$_ } values %EXPORT_TAGS;
86my %exportok = map { $_ => 1 } @EXPORT_OK;
87my $ok = 1;
88foreach my $tag (keys %tags) {
89 $ok = exists $exportok{$tag};
90}
91::ok( $ok, 'export_ok_tags()' );
92
93
94package Foo;
95Testing->import;
96
97::ok( defined &lifejacket, 'simple import' );
98
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99my $got = eval {&lifejacket};
100::ok ( $@ eq "", 'check we can call the imported subroutine')
101 or print STDERR "# \$\@ is $@\n";
102::ok ( $got eq 'lifejacket', 'and that it gave the correct result')
103 or print STDERR "# expected 'lifejacket', got " .
104 (defined $got ? "'$got'" : "undef") . "\n";
105
106# The string eval is important. It stops $Foo::{is} existing when
107# Testing->import is called.
108::ok( eval "defined &is",
109 "Import a subroutine where exporter must create the typeglob" );
57ddaf2a 110$got = eval "&is";
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111::ok ( $@ eq "", 'check we can call the imported autoloaded subroutine')
112 or chomp ($@), print STDERR "# \$\@ is $@\n";
113::ok ( $got eq 'Is', 'and that it gave the correct result')
114 or print STDERR "# expected 'Is', got " .
115 (defined $got ? "'$got'" : "undef") . "\n";
116
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117
118package Bar;
119my @imports = qw($seatbelt &Above stuff @wailing %left);
120Testing->import(@imports);
121
122::ok( (!grep { eval "!defined $_" } map({ /^\w/ ? "&$_" : $_ } @imports)),
123 'import by symbols' );
124
125
126package Yar;
127my @tags = qw(:This :tray);
128Testing->import(@tags);
129
130::ok( (!grep { eval "!defined $_" } map { /^\w/ ? "&$_" : $_ }
131 map { @$_ } @{$Testing::EXPORT_TAGS{@tags}}),
132 'import by tags' );
133
134
135package Arrr;
136Testing->import(qw(!lifejacket));
137
138::ok( !defined &lifejacket, 'deny import by !' );
139
140
141package Mars;
142Testing->import('/e/');
143
144::ok( (!grep { eval "!defined $_" } map { /^\w/ ? "&$_" : $_ }
145 grep { /e/ } @Testing::EXPORT, @Testing::EXPORT_OK),
146 'import by regex');
147
148
149package Venus;
150Testing->import('!/e/');
151
152::ok( (!grep { eval "defined $_" } map { /^\w/ ? "&$_" : $_ }
153 grep { /e/ } @Testing::EXPORT, @Testing::EXPORT_OK),
154 'deny import by regex');
155::ok( !defined &lifejacket, 'further denial' );
156
157
158package More::Testing;
159@ISA = qw(Exporter);
160$VERSION = 0;
161eval { More::Testing->require_version(0); 1 };
162::ok(!$@, 'require_version(0) and $VERSION = 0');
163
164
165package Yet::More::Testing;
166@ISA = qw(Exporter);
167$VERSION = 0;
168eval { Yet::More::Testing->require_version(10); 1 };
169::ok($@ !~ /\(undef\)/, 'require_version(10) and $VERSION = 0');
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170
171
172my $warnings;
173BEGIN {
d6235ae5 174 local $SIG{__WARN__} = sub { $warnings = join '', @_ };
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175 package Testing::Unused::Vars;
176 @ISA = qw(Exporter);
177 @EXPORT = qw(this $TODO that);
178
179 package Foo;
180 Testing::Unused::Vars->import;
181}
182
183::ok( !$warnings, 'Unused variables can be exported without warning' ) ||
184 print "# $warnings\n";
185
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186package Moving::Target;
187@ISA = qw(Exporter);
188@EXPORT_OK = qw (foo);
189
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190sub foo {"This is foo"};
191sub bar {"This is bar"};
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192
193package Moving::Target::Test;
194
57ddaf2a 195Moving::Target->import ('foo');
364e1267 196
57ddaf2a 197::ok (foo() eq "This is foo", "imported foo before EXPORT_OK changed");
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198
199push @Moving::Target::EXPORT_OK, 'bar';
200
57ddaf2a 201Moving::Target->import ('bar');
364e1267 202
57ddaf2a 203::ok (bar() eq "This is bar", "imported bar after EXPORT_OK changed");
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204
205package The::Import;
206
207use Exporter 'import';
208
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209::ok(\&import == \&Exporter::import, "imported the import routine");
210
211@EXPORT = qw( wibble );
212sub wibble {return "wobble"};
213
214package Use::The::Import;
215
216The::Import->import;
217
218my $val = eval { wibble() };
219::ok($val eq "wobble", "exported importer worked");
220
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221# Check that Carp recognizes Exporter as internal to Perl
222require Carp;
86627c6a 223eval { Carp::croak() };
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224::ok($Carp::Internal{Exporter}, "Carp recognizes Exporter");
225::ok($Carp::Internal{'Exporter::Heavy'}, "Carp recognizes Exporter::Heavy");
226