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1 | #!./perl |
2 | |
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3 | # $Id: tied.t,v 1.0 2000/09/01 19:40:42 ram Exp $ |
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4 | # |
5 | # Copyright (c) 1995-2000, Raphael Manfredi |
6 | # |
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7 | # You may redistribute only under the same terms as Perl 5, as specified |
8 | # in the README file that comes with the distribution. |
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9 | # |
10 | # $Log: tied.t,v $ |
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11 | # Revision 1.0 2000/09/01 19:40:42 ram |
12 | # Baseline for first official release. |
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13 | # |
14 | |
15 | sub BEGIN { |
16 | chdir('t') if -d 't'; |
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17 | @INC = '.'; |
18 | push @INC, '../lib'; |
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19 | require Config; import Config; |
20 | if ($Config{'extensions'} !~ /\bStorable\b/) { |
21 | print "1..0 # Skip: Storable was not built\n"; |
22 | exit 0; |
23 | } |
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24 | require 'lib/st-dump.pl'; |
25 | } |
26 | |
27 | sub ok; |
28 | |
29 | use Storable qw(freeze thaw); |
30 | |
31 | print "1..22\n"; |
32 | |
33 | ($scalar_fetch, $array_fetch, $hash_fetch) = (0, 0, 0); |
34 | |
35 | package TIED_HASH; |
36 | |
37 | sub TIEHASH { |
38 | my $self = bless {}, shift; |
39 | return $self; |
40 | } |
41 | |
42 | sub FETCH { |
43 | my $self = shift; |
44 | my ($key) = @_; |
45 | $main::hash_fetch++; |
46 | return $self->{$key}; |
47 | } |
48 | |
49 | sub STORE { |
50 | my $self = shift; |
51 | my ($key, $value) = @_; |
52 | $self->{$key} = $value; |
53 | } |
54 | |
55 | sub FIRSTKEY { |
56 | my $self = shift; |
57 | scalar keys %{$self}; |
58 | return each %{$self}; |
59 | } |
60 | |
61 | sub NEXTKEY { |
62 | my $self = shift; |
63 | return each %{$self}; |
64 | } |
65 | |
66 | package TIED_ARRAY; |
67 | |
68 | sub TIEARRAY { |
69 | my $self = bless [], shift; |
70 | return $self; |
71 | } |
72 | |
73 | sub FETCH { |
74 | my $self = shift; |
75 | my ($idx) = @_; |
76 | $main::array_fetch++; |
77 | return $self->[$idx]; |
78 | } |
79 | |
80 | sub STORE { |
81 | my $self = shift; |
82 | my ($idx, $value) = @_; |
83 | $self->[$idx] = $value; |
84 | } |
85 | |
86 | sub FETCHSIZE { |
87 | my $self = shift; |
88 | return @{$self}; |
89 | } |
90 | |
91 | package TIED_SCALAR; |
92 | |
93 | sub TIESCALAR { |
94 | my $scalar; |
95 | my $self = bless \$scalar, shift; |
96 | return $self; |
97 | } |
98 | |
99 | sub FETCH { |
100 | my $self = shift; |
101 | $main::scalar_fetch++; |
102 | return $$self; |
103 | } |
104 | |
105 | sub STORE { |
106 | my $self = shift; |
107 | my ($value) = @_; |
108 | $$self = $value; |
109 | } |
110 | |
111 | package FAULT; |
112 | |
113 | $fault = 0; |
114 | |
115 | sub TIESCALAR { |
116 | my $pkg = shift; |
117 | return bless [@_], $pkg; |
118 | } |
119 | |
120 | sub FETCH { |
121 | my $self = shift; |
122 | my ($href, $key) = @$self; |
123 | $fault++; |
124 | untie $href->{$key}; |
125 | return $href->{$key} = 1; |
126 | } |
127 | |
128 | package main; |
129 | |
130 | $a = 'toto'; |
131 | $b = \$a; |
132 | |
133 | $c = tie %hash, TIED_HASH; |
134 | $d = tie @array, TIED_ARRAY; |
135 | tie $scalar, TIED_SCALAR; |
136 | |
137 | #$scalar = 'foo'; |
138 | #$hash{'attribute'} = \$d; |
139 | #$array[0] = $c; |
140 | #$array[1] = \$scalar; |
141 | |
142 | ### If I say |
143 | ### $hash{'attribute'} = $d; |
144 | ### below, then dump() incorectly dumps the hash value as a string the second |
145 | ### time it is reached. I have not investigated enough to tell whether it's |
146 | ### a bug in my dump() routine or in the Perl tieing mechanism. |
147 | $scalar = 'foo'; |
148 | $hash{'attribute'} = 'plain value'; |
149 | $array[0] = \$scalar; |
150 | $array[1] = $c; |
151 | $array[2] = \@array; |
152 | |
153 | @tied = (\$scalar, \@array, \%hash); |
154 | %a = ('key', 'value', 1, 0, $a, $b, 'cvar', \$a, 'scalarref', \$scalar); |
155 | @a = ('first', 3, -4, -3.14159, 456, 4.5, $d, \$d, |
156 | $b, \$a, $a, $c, \$c, \%a, \@array, \%hash, \@tied); |
157 | |
158 | ok 1, defined($f = freeze(\@a)); |
159 | |
160 | $dumped = &dump(\@a); |
161 | ok 2, 1; |
162 | |
163 | $root = thaw($f); |
164 | ok 3, defined $root; |
165 | |
166 | $got = &dump($root); |
167 | ok 4, 1; |
168 | |
169 | ### Used to see the manifestation of the bug documented above. |
170 | ### print "original: $dumped"; |
171 | ### print "--------\n"; |
172 | ### print "got: $got"; |
173 | ### print "--------\n"; |
174 | |
175 | ok 5, $got eq $dumped; |
176 | |
177 | $g = freeze($root); |
178 | ok 6, length($f) == length($g); |
179 | |
180 | # Ensure the tied items in the retrieved image work |
181 | @old = ($scalar_fetch, $array_fetch, $hash_fetch); |
182 | @tied = ($tscalar, $tarray, $thash) = @{$root->[$#{$root}]}; |
183 | @type = qw(SCALAR ARRAY HASH); |
184 | |
185 | ok 7, tied $$tscalar; |
186 | ok 8, tied @{$tarray}; |
187 | ok 9, tied %{$thash}; |
188 | |
189 | @new = ($$tscalar, $tarray->[0], $thash->{'attribute'}); |
190 | @new = ($scalar_fetch, $array_fetch, $hash_fetch); |
191 | |
192 | # Tests 10..15 |
193 | for ($i = 0; $i < @new; $i++) { |
194 | print "not " unless $new[$i] == $old[$i] + 1; |
195 | printf "ok %d\n", 10 + 2*$i; # Tests 10,12,14 |
196 | print "not " unless ref $tied[$i] eq $type[$i]; |
197 | printf "ok %d\n", 11 + 2*$i; # Tests 11,13,15 |
198 | } |
199 | |
200 | # Check undef ties |
201 | my $h = {}; |
202 | tie $h->{'x'}, 'FAULT', $h, 'x'; |
203 | my $hf = freeze($h); |
204 | ok 16, defined $hf; |
205 | ok 17, $FAULT::fault == 0; |
206 | ok 18, $h->{'x'} == 1; |
207 | ok 19, $FAULT::fault == 1; |
208 | |
209 | my $ht = thaw($hf); |
210 | ok 20, defined $ht; |
211 | ok 21, $ht->{'x'} == 1; |
212 | ok 22, $FAULT::fault == 2; |
213 | |