Commit | Line | Data |
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33d611b9 JH |
1 | #!/usr/bin/perl -w |
2 | ||
39063025 RGS |
3 | BEGIN { |
4 | if( $ENV{PERL_CORE} ) { | |
5 | chdir 't' if -d 't'; | |
6 | @INC = qw(../lib); | |
7 | } | |
8 | } | |
9 | ||
e75d1f10 | 10 | my ($Has_PH, $Field); |
33d611b9 JH |
11 | BEGIN { |
12 | $Has_PH = $] < 5.009; | |
e75d1f10 | 13 | $Field = $Has_PH ? "pseudo-hash field" : "class field"; |
33d611b9 JH |
14 | } |
15 | ||
16 | my $W; | |
17 | ||
18 | BEGIN { | |
19 | $W = 0; | |
20 | $SIG{__WARN__} = sub { | |
21 | if ($_[0] =~ /^Hides field '.*?' in base class/) { | |
22 | $W++; | |
23 | } | |
24 | else { | |
25 | warn $_[0]; | |
26 | } | |
27 | }; | |
28 | } | |
29 | ||
30 | use strict; | |
85be41dd | 31 | use Test::More tests => 29; |
33d611b9 JH |
32 | |
33 | BEGIN { use_ok('base'); } | |
34 | ||
35 | package B1; | |
36 | use fields qw(b1 b2 b3); | |
37 | ||
38 | package B2; | |
39 | use fields '_b1'; | |
40 | use fields qw(b1 _b2 b2); | |
41 | ||
42 | sub new { fields::new(shift) } | |
43 | ||
44 | package B3; | |
45 | use fields qw(b4 _b5 b6 _b7); | |
46 | ||
47 | package D1; | |
48 | use base 'B1'; | |
49 | use fields qw(d1 d2 d3); | |
50 | ||
51 | package D2; | |
52 | use base 'B1'; | |
53 | use fields qw(_d1 _d2); | |
54 | use fields qw(d1 d2); | |
55 | ||
56 | ||
57 | package D3; | |
58 | use base 'B2'; | |
59 | use fields qw(b1 d1 _b1 _d1); # hide b1 | |
60 | ||
61 | package D4; | |
62 | use base 'D3'; | |
63 | use fields qw(_d3 d3); | |
64 | ||
65 | package M; | |
66 | sub m {} | |
67 | ||
68 | package D5; | |
69 | use base qw(M B2); | |
70 | ||
71 | # Test that multiple inheritance fails. | |
72 | package D6; | |
73 | eval { 'base'->import(qw(B2 M B3)); }; | |
9e998a43 RGS |
74 | ::like($@, qr/can't multiply inherit fields/i, |
75 | 'No multiple field inheritance'); | |
33d611b9 JH |
76 | |
77 | package Foo::Bar; | |
78 | use base 'B1'; | |
79 | ||
80 | package Foo::Bar::Baz; | |
81 | use base 'Foo::Bar'; | |
82 | use fields qw(foo bar baz); | |
83 | ||
84 | # Test repeatability for when modules get reloaded. | |
85 | package B1; | |
86 | use fields qw(b1 b2 b3); | |
87 | ||
88 | package D3; | |
89 | use base 'B2'; | |
90 | use fields qw(b1 d1 _b1 _d1); # hide b1 | |
91 | ||
92 | ||
864f8ab4 JH |
93 | # Test that a package with only private fields gets inherited properly |
94 | package B7; | |
95 | use fields qw(_b1); | |
96 | ||
97 | package D7; | |
98 | use base qw(B7); | |
99 | use fields qw(b1); | |
100 | ||
101 | ||
102 | # Test that an intermediate package with no fields doesn't cause a problem. | |
103 | package B8; | |
104 | use fields qw(_b1); | |
105 | ||
106 | package D8; | |
107 | use base qw(B8); | |
108 | ||
109 | package D8A; | |
110 | use base qw(D8); | |
111 | use fields qw(b1); | |
112 | ||
113 | ||
33d611b9 JH |
114 | package main; |
115 | ||
116 | my %EXPECT = ( | |
117 | B1 => [qw(b1 b2 b3)], | |
118 | D1 => [qw(b1 b2 b3 d1 d2 d3)], | |
119 | D2 => [qw(b1 b2 b3 _d1 _d2 d1 d2)], | |
120 | ||
121 | M => [qw()], | |
122 | B2 => [qw(_b1 b1 _b2 b2)], | |
123 | D3 => [(undef,undef,undef, | |
124 | qw(b2 b1 d1 _b1 _d1))], # b1 is hidden | |
125 | D4 => [(undef,undef,undef, | |
126 | qw(b2 b1 d1),undef,undef,qw(_d3 d3))], | |
864f8ab4 | 127 | |
33d611b9 JH |
128 | D5 => [undef, 'b1', undef, 'b2'], |
129 | ||
130 | B3 => [qw(b4 _b5 b6 _b7)], | |
131 | ||
864f8ab4 JH |
132 | B7 => [qw(_b1)], |
133 | D7 => [undef, 'b1'], | |
134 | ||
135 | B8 => [qw(_b1)], | |
136 | D8 => [undef], | |
137 | D8A => [undef, 'b1'], | |
138 | ||
33d611b9 JH |
139 | 'Foo::Bar' => [qw(b1 b2 b3)], |
140 | 'Foo::Bar::Baz' => [qw(b1 b2 b3 foo bar baz)], | |
141 | ); | |
142 | ||
143 | while(my($class, $efields) = each %EXPECT) { | |
144 | no strict 'refs'; | |
145 | my %fields = %{$class.'::FIELDS'}; | |
146 | my %expected_fields; | |
147 | foreach my $idx (1..@$efields) { | |
148 | my $key = $efields->[$idx-1]; | |
149 | next unless $key; | |
150 | $expected_fields{$key} = $idx; | |
151 | } | |
152 | ||
153 | ::is_deeply(\%fields, \%expected_fields, "%FIELDS check: $class"); | |
154 | } | |
155 | ||
156 | # Did we get the appropriate amount of warnings? | |
157 | is( $W, 1, 'right warnings' ); | |
158 | ||
159 | ||
160 | # A simple object creation and attribute access test | |
161 | my B2 $obj1 = D3->new; | |
162 | $obj1->{b1} = "B2"; | |
163 | my D3 $obj2 = $obj1; | |
164 | $obj2->{b1} = "D3"; | |
165 | ||
166 | # We should get compile time failures field name typos | |
e75d1f10 RD |
167 | eval q(return; my D3 $obj3 = $obj2; $obj3->{notthere} = ""); |
168 | like $@, | |
169 | qr/^No such $Field "notthere" in variable \$obj3 of type D3/, | |
170 | "Compile failure of undeclared fields (helem)"; | |
33d611b9 | 171 | |
c63d38c6 RGS |
172 | SKIP: { |
173 | # Slices | |
174 | # We should get compile time failures field name typos | |
175 | skip "Doesn't work before 5.9", 2 if $] < 5.009; | |
176 | eval q(return; my D3 $obj3 = $obj2; my $k; @$obj3{$k,'notthere'} = ()); | |
177 | like $@, | |
178 | qr/^No such $Field "notthere" in variable \$obj3 of type D3/, | |
179 | "Compile failure of undeclared fields (hslice)"; | |
180 | eval q(return; my D3 $obj3 = $obj2; my $k; @{$obj3}{$k,'notthere'} = ()); | |
181 | like | |
182 | $@, qr/^No such $Field "notthere" in variable \$obj3 of type D3/, | |
183 | "Compile failure of undeclared fields (hslice (block form))"; | |
184 | } | |
e75d1f10 | 185 | |
33d611b9 JH |
186 | @$obj1{"_b1", "b1"} = (17, 29); |
187 | is( $obj1->{_b1}, 17 ); | |
188 | is( $obj1->{b1}, 29 ); | |
189 | ||
190 | @$obj1{'_b1', 'b1'} = (44,28); | |
191 | is( $obj1->{_b1}, 44 ); | |
192 | is( $obj1->{b1}, 28 ); | |
193 | ||
194 | ||
195 | ||
196 | # Break multiple inheritance with a field name clash. | |
197 | package E1; | |
198 | use fields qw(yo this _lah meep 42); | |
199 | ||
200 | package E2; | |
201 | use fields qw(_yo ahhh this); | |
202 | ||
203 | eval { | |
204 | package Broken; | |
205 | ||
206 | # The error must occur at run time for the eval to catch it. | |
207 | require base; | |
208 | 'base'->import(qw(E1 E2)); | |
209 | }; | |
9e998a43 | 210 | ::like( $@, qr/Can't multiply inherit fields/i, 'Again, no multi inherit' ); |
33d611b9 JH |
211 | |
212 | ||
8731c5d9 YK |
213 | # Test that a package with no fields can inherit from a package with |
214 | # fields, and that pseudohash messages don't show up | |
215 | ||
216 | package B9; | |
217 | use fields qw(b1); | |
218 | ||
219 | sub _mk_obj { fields::new($_[0])->{'b1'} }; | |
220 | ||
221 | package D9; | |
222 | use base qw(B9); | |
223 | ||
224 | package main; | |
225 | ||
226 | { | |
227 | my $w = 0; | |
228 | local $SIG{__WARN__} = sub { $w++ }; | |
229 | ||
230 | B9->_mk_obj(); | |
231 | # used tp emit a warning that pseudohashes are deprecated, because | |
232 | # %FIELDS wasn't blessed. | |
233 | D9->_mk_obj(); | |
234 | ||
235 | is ($w, 0, "pseudohash warnings in derived class with no fields of it's own"); | |
236 | } | |
85be41dd DM |
237 | |
238 | # [perl #31078] an intermediate class with no additional fields caused | |
239 | # hidden fields in base class to get stomped on | |
240 | ||
241 | { | |
242 | package X; | |
243 | use fields qw(X1 _X2); | |
244 | sub new { | |
245 | my X $self = shift; | |
246 | $self = fields::new($self) unless ref $self; | |
247 | $self->{X1} = "x1"; | |
85be41dd DM |
248 | $self->{_X2} = "_x2"; |
249 | return $self; | |
250 | } | |
251 | sub get_X2 { my X $self = shift; $self->{_X2} } | |
252 | ||
253 | package Y; | |
254 | use base qw(X); | |
255 | ||
256 | sub new { | |
257 | my Y $self = shift; | |
258 | $self = fields::new($self) unless ref $self; | |
259 | $self->SUPER::new(); | |
260 | return $self; | |
261 | } | |
262 | ||
263 | ||
264 | package Z; | |
265 | use base qw(Y); | |
266 | use fields qw(Z1); | |
267 | ||
268 | sub new { | |
269 | my Z $self = shift; | |
270 | $self = fields::new($self) unless ref $self; | |
271 | $self->SUPER::new(); | |
272 | $self->{Z1} = 'z1'; | |
273 | return $self; | |
274 | } | |
275 | ||
276 | package main; | |
277 | ||
85be41dd DM |
278 | my Z $c = Z->new(); |
279 | is($c->get_X2, '_x2', "empty intermediate class"); | |
85be41dd | 280 | } |