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[perl5.git] / lib / fields.t
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1#!./perl -w
2
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3my $w;
4
5BEGIN {
11162842 6 chdir 't' if -d 't';
20822f61 7 @INC = '../lib';
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8 $SIG{__WARN__} = sub {
9 if ($_[0] =~ /^Hides field 'b1' in base class/) {
10 $w++;
11 return;
12 }
803b07a7 13 print STDERR $_[0];
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14 };
15}
16
b47ba5cf 17use strict;
9f1b1f2d 18use warnings;
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19use vars qw($DEBUG);
20
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21use Test::More;
22
23
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24package B1;
25use fields qw(b1 b2 b3);
26
27package B2;
28use fields '_b1';
29use fields qw(b1 _b2 b2);
30
6d822dc4 31sub new { fields::new(shift); }
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32
33package D1;
34use base 'B1';
35use fields qw(d1 d2 d3);
36
37package D2;
38use base 'B1';
39use fields qw(_d1 _d2);
40use fields qw(d1 d2);
41
42package D3;
43use base 'B2';
44use fields qw(b1 d1 _b1 _d1); # hide b1
45
46package D4;
47use base 'D3';
48use fields qw(_d3 d3);
49
50package M;
51sub m {}
52
53package D5;
54use base qw(M B2);
55
56package Foo::Bar;
57use base 'B1';
58
59package Foo::Bar::Baz;
60use base 'Foo::Bar';
61use fields qw(foo bar baz);
62
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63# Test repeatability for when modules get reloaded.
64package B1;
65use fields qw(b1 b2 b3);
66
67package D3;
68use base 'B2';
69use fields qw(b1 d1 _b1 _d1); # hide b1
70
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71package main;
72
479ba383 73sub fstr {
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74 my $h = shift;
75 my @tmp;
76 for my $k (sort {$h->{$a} <=> $h->{$b}} keys %$h) {
77 my $v = $h->{$k};
78 push(@tmp, "$k:$v");
79 }
80 my $str = join(",", @tmp);
81 print "$h => $str\n" if $DEBUG;
82 $str;
83}
84
85my %expect = (
86 B1 => "b1:1,b2:2,b3:3",
87 B2 => "_b1:1,b1:2,_b2:3,b2:4",
88 D1 => "b1:1,b2:2,b3:3,d1:4,d2:5,d3:6",
89 D2 => "b1:1,b2:2,b3:3,_d1:4,_d2:5,d1:6,d2:7",
90 D3 => "b2:4,b1:5,d1:6,_b1:7,_d1:8",
91 D4 => "b2:4,b1:5,d1:6,_d3:9,d3:10",
92 D5 => "b1:2,b2:4",
93 'Foo::Bar::Baz' => 'b1:1,b2:2,b3:3,foo:4,bar:5,baz:6',
94);
95
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96plan tests => keys(%expect) + 21;
97
f1192cee 98my $testno = 0;
0ea4badc 99
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100while (my($class, $exp) = each %expect) {
101 no strict 'refs';
102 my $fstr = fstr(\%{$class."::FIELDS"});
6d822dc4 103 is( $fstr, $exp, "\%FIELDS check for $class" );
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104}
105
106# Did we get the appropriate amount of warnings?
6d822dc4 107is( $w, 1 );
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108
109# A simple object creation and AVHV attribute access test
110my B2 $obj1 = D3->new;
111$obj1->{b1} = "B2";
112my D3 $obj2 = $obj1;
113$obj2->{b1} = "D3";
114
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115# We should get compile time failures field name typos
116eval q(my D3 $obj3 = $obj2; $obj3->{notthere} = "");
6d822dc4 117like $@, qr/^Attempt to access disallowed key 'notthere' in a restricted hash/;
f1192cee 118
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119# Slices
120@$obj1{"_b1", "b1"} = (17, 29);
6d822dc4 121is_deeply($obj1, { b1 => 29, _b1 => 17 });
479ba383 122
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123@$obj1{'_b1', 'b1'} = (44,28);
124is_deeply($obj1, { b1 => 28, _b1 => 44 });
479ba383 125
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126eval { fields::phash };
127like $@, qr/^Pseudo-hashes have been removed from Perl/;
479ba383 128
f1192cee 129#fields::_dump();
377b21bb 130
479ba383 131# check if fields autovivify
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132{
133 package Foo;
134 use fields qw(foo bar);
6d822dc4 135 sub new { fields::new($_[0]) }
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136
137 package main;
138 my Foo $a = Foo->new();
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139 $a->{foo} = ['a', 'ok', 'c'];
140 $a->{bar} = { A => 'ok' };
141 is( $a->{foo}[1], 'ok' );
142 is( $a->{bar}->{A},, 'ok' );
377b21bb 143}
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144
145# check if fields autovivify
146{
147 package Bar;
148 use fields qw(foo bar);
149 sub new { return fields::new($_[0]) }
150
151 package main;
152 my Bar $a = Bar::->new();
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153 $a->{foo} = ['a', 'ok', 'c'];
154 $a->{bar} = { A => 'ok' };
155 is( $a->{foo}[1], 'ok' );
156 is( $a->{bar}->{A}, 'ok' );
479ba383 157}
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158
159
160# Test $VERSION bug
161package No::Version;
162
163use vars qw($Foo);
164sub VERSION { 42 }
165
166package Test::Version;
167
168use base qw(No::Version);
6d822dc4 169::like( $No::Version::VERSION, qr/set by base.pm/ );
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170
171# Test Inverse of $VERSION bug base.pm should not clobber existing $VERSION
172package Has::Version;
173
174BEGIN { $Has::Version::VERSION = '42' };
175
176package Test::Version2;
177
178use base qw(Has::Version);
6d822dc4 179::is( $Has::Version::VERSION, 42 );
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180
181package main;
182
183our $eval1 = q{
184 {
185 package Eval1;
186 {
187 package Eval2;
188 use base 'Eval1';
189 $Eval2::VERSION = "1.02";
190 }
191 $Eval1::VERSION = "1.01";
192 }
193};
194
195eval $eval1;
6d822dc4 196is( $@, '' );
b94834e7 197
6d822dc4 198is( $Eval1::VERSION, 1.01 );
b94834e7 199
6d822dc4 200is( $Eval2::VERSION, 1.02 );
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201
202
7678c486 203eval q{use base 'reallyReAlLyNotexists'};
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204like( $@, qr/^Base class package "reallyReAlLyNotexists" is empty./,
205 'base with empty package');
b94834e7 206
7678c486 207eval q{use base 'reallyReAlLyNotexists'};
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208like( $@, qr/^Base class package "reallyReAlLyNotexists" is empty./,
209 ' still empty on 2nd load');
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210
211BEGIN { $Has::Version_0::VERSION = 0 }
212
213package Test::Version3;
214
215use base qw(Has::Version_0);
6d822dc4 216::is( $Has::Version_0::VERSION, 0, '$VERSION==0 preserved' );
e8f84f55 217
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218package Test::FooBar;
219
220use fields qw(a b c);
221
222sub new {
223 my $self = fields::new(shift);
224 %$self = @_ if @_;
225 $self;
226}
227
228package main;
229
230{
231 my $x = Test::FooBar->new( a => 1, b => 2);
232
233 is(ref $x, 'Test::FooBar', 'x is a Test::FooBar');
234 ok(exists $x->{a}, 'x has a');
235 ok(exists $x->{b}, 'x has b');
236 is(scalar keys %$x, 2, 'x has two fields');
237}
238
239