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1 | #!/usr/bin/perl -w |
2 | # |
3 | # Basic test suite for Tie::RefHash and Tie::RefHash::Nestable. |
4 | # |
5 | # The testing is in two parts: first, run lots of tests on both a tied |
6 | # hash and an ordinary un-tied hash, and check they give the same |
7 | # answer. Then there are tests for those cases where the tied hashes |
8 | # should behave differently to normal hashes, that is, when using |
9 | # references as keys. |
10 | # |
11 | |
12 | BEGIN { |
13 | chdir 't' if -d 't'; |
14 | @INC = '.'; |
15 | push @INC, '../lib'; |
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16 | require Config; |
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17 | if (($Config::Config{'extensions'} !~ m!\bData/Dumper\b!) ){ |
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18 | print "1..0 # Skip -- Perl configured without Data::Dumper module\n"; |
19 | exit 0; |
20 | } |
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21 | } |
22 | |
23 | use strict; |
24 | use Tie::RefHash; |
25 | use Data::Dumper; |
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26 | my $numtests = 37; |
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27 | my $currtest = 1; |
28 | print "1..$numtests\n"; |
29 | |
30 | my $ref = []; my $ref1 = []; |
31 | |
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32 | package Boustrophedon; # A class with overloaded "". |
33 | sub new { my ($c, $s) = @_; bless \$s, $c } |
34 | use overload '""' => sub { ${$_[0]} . reverse ${$_[0]} }; |
35 | package main; |
36 | my $ox = Boustrophedon->new("foobar"); |
37 | |
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38 | # Test standard hash functionality, by performing the same operations |
39 | # on a tied hash and on a normal hash, and checking that the results |
40 | # are the same. This does of course assume that Perl hashes are not |
41 | # buggy :-) |
42 | # |
43 | my @tests = standard_hash_tests(); |
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44 | |
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45 | my @ordinary_results = runtests(\@tests, undef); |
46 | foreach my $class ('Tie::RefHash', 'Tie::RefHash::Nestable') { |
47 | my @tied_results = runtests(\@tests, $class); |
48 | my $all_ok = 1; |
49 | |
50 | die if @ordinary_results != @tied_results; |
51 | foreach my $i (0 .. $#ordinary_results) { |
52 | my ($or, $ow, $oe) = @{$ordinary_results[$i]}; |
53 | my ($tr, $tw, $te) = @{$tied_results[$i]}; |
54 | |
55 | my $ok = 1; |
56 | local $^W = 0; |
57 | $ok = 0 if (defined($or) != defined($tr)) or ($or ne $tr); |
58 | $ok = 0 if (defined($ow) != defined($tw)) or ($ow ne $tw); |
59 | $ok = 0 if (defined($oe) != defined($te)) or ($oe ne $te); |
60 | |
61 | if (not $ok) { |
62 | print STDERR |
63 | "failed for $class: $tests[$i]\n", |
64 | "ordinary hash gave:\n", |
65 | defined $or ? "\tresult: $or\n" : "\tundef result\n", |
66 | defined $ow ? "\twarning: $ow\n" : "\tno warning\n", |
67 | defined $oe ? "\texception: $oe\n" : "\tno exception\n", |
68 | "tied $class hash gave:\n", |
69 | defined $tr ? "\tresult: $tr\n" : "\tundef result\n", |
70 | defined $tw ? "\twarning: $tw\n" : "\tno warning\n", |
71 | defined $te ? "\texception: $te\n" : "\tno exception\n", |
72 | "\n"; |
73 | $all_ok = 0; |
74 | } |
75 | } |
76 | test($all_ok); |
77 | } |
78 | |
79 | # Now test Tie::RefHash's special powers |
80 | my (%h, $h); |
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81 | $h = eval { tie %h, 'Tie::RefHash' }; |
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82 | warn $@ if $@; |
83 | test(not $@); |
84 | test(ref($h) eq 'Tie::RefHash'); |
85 | test(defined(tied(%h)) and tied(%h) =~ /^Tie::RefHash/); |
86 | $h{$ref} = 'cholet'; |
87 | test($h{$ref} eq 'cholet'); |
88 | test(exists $h{$ref}); |
89 | test((keys %h) == 1); |
90 | test(ref((keys %h)[0]) eq 'ARRAY'); |
91 | test((keys %h)[0] eq $ref); |
92 | test((values %h) == 1); |
93 | test((values %h)[0] eq 'cholet'); |
94 | my $count = 0; |
95 | while (my ($k, $v) = each %h) { |
96 | if ($count++ == 0) { |
97 | test(ref($k) eq 'ARRAY'); |
98 | test($k eq $ref); |
99 | } |
100 | } |
101 | test($count == 1); |
102 | delete $h{$ref}; |
103 | test(not defined $h{$ref}); |
104 | test(not exists($h{$ref})); |
105 | test((keys %h) == 0); |
106 | test((values %h) == 0); |
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107 | $h{$ox} = "bellow"; # overloaded "" |
108 | test(exists $h{$ox}); |
109 | test($h{$ox} eq "bellow"); |
110 | test(not exists $h{"foobarraboof"}); |
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111 | undef $h; |
112 | untie %h; |
113 | |
114 | # And now Tie::RefHash::Nestable's differences from Tie::RefHash. |
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115 | $h = eval { tie %h, 'Tie::RefHash::Nestable' }; |
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116 | warn $@ if $@; |
117 | test(not $@); |
118 | test(ref($h) eq 'Tie::RefHash::Nestable'); |
119 | test(defined(tied(%h)) and tied(%h) =~ /^Tie::RefHash::Nestable/); |
120 | $h{$ref}->{$ref1} = 'bungo'; |
121 | test($h{$ref}->{$ref1} eq 'bungo'); |
122 | |
123 | # Test that the nested hash is also tied (for current implementation) |
124 | test(defined(tied(%{$h{$ref}})) |
125 | and tied(%{$h{$ref}}) =~ /^Tie::RefHash::Nestable=/ ); |
126 | |
127 | test((keys %h) == 1); |
128 | test((keys %h)[0] eq $ref); |
129 | test((keys %{$h{$ref}}) == 1); |
130 | test((keys %{$h{$ref}})[0] eq $ref1); |
131 | |
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132 | |
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133 | die "expected to run $numtests tests, but ran ", $currtest - 1 |
134 | if $currtest - 1 != $numtests; |
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135 | |
136 | @tests = (); |
137 | undef $ref; |
138 | undef $ref1; |
139 | |
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140 | exit(); |
141 | |
142 | |
143 | # Print 'ok X' if true, 'not ok X' if false |
144 | # Uses global $currtest. |
145 | # |
146 | sub test { |
147 | my $t = shift; |
148 | print 'not ' if not $t; |
149 | print 'ok ', $currtest++, "\n"; |
150 | } |
151 | |
152 | |
153 | # Wrapper for Data::Dumper to 'dump' a scalar as an EXPR string. |
154 | sub dumped { |
155 | my $s = shift; |
156 | my $d = Dumper($s); |
157 | $d =~ s/^\$VAR1 =\s*//; |
158 | $d =~ s/;$//; |
159 | chomp $d; |
160 | return $d; |
161 | } |
162 | |
163 | # Crudely dump a hash into a canonical string representation (because |
164 | # hash keys can appear in any order, Data::Dumper may give different |
165 | # strings for the same hash). |
166 | # |
167 | sub dumph { |
168 | my $h = shift; |
169 | my $r = ''; |
170 | foreach (sort keys %$h) { |
171 | $r = dumped($_) . ' => ' . dumped($h->{$_}) . "\n"; |
172 | } |
173 | return $r; |
174 | } |
175 | |
176 | # Run the tests and give results. |
177 | # |
178 | # Parameters: reference to list of tests to run |
179 | # name of class to use for tied hash, or undef if not tied |
180 | # |
181 | # Returns: list of [R, W, E] tuples, one for each test. |
182 | # R is the return value from running the test, W any warnings it gave, |
183 | # and E any exception raised with 'die'. E and W will be tidied up a |
184 | # little to remove irrelevant details like line numbers :-) |
185 | # |
186 | # Will also run a few of its own 'ok N' tests. |
187 | # |
188 | sub runtests { |
189 | my ($tests, $class) = @_; |
190 | my @r; |
191 | |
192 | my (%h, $h); |
193 | if (defined $class) { |
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194 | $h = eval { tie %h, $class }; |
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195 | warn $@ if $@; |
196 | test(not $@); |
197 | test(ref($h) eq $class); |
198 | test(defined(tied(%h)) and tied(%h) =~ /^\Q$class\E/); |
199 | } |
200 | |
201 | foreach (@$tests) { |
202 | my ($result, $warning, $exception); |
203 | local $SIG{__WARN__} = sub { $warning .= $_[0] }; |
204 | $result = scalar(eval $_); |
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205 | if ($@) |
206 | { |
207 | die "$@:$_" unless defined $class; |
208 | $exception = $@; |
209 | } |
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210 | |
211 | foreach ($warning, $exception) { |
212 | next if not defined; |
213 | s/ at .+ line \d+\.$//mg; |
214 | s/ at .+ line \d+, at .*//mg; |
215 | s/ at .+ line \d+, near .*//mg; |
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216 | s/(uninitialized value)( within)? [\$@%].*? in /$1 in /g; |
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217 | } |
218 | |
219 | my (@warnings, %seen); |
220 | foreach (split /\n/, $warning) { |
221 | push @warnings, $_ unless $seen{$_}++; |
222 | } |
223 | $warning = join("\n", @warnings); |
224 | |
225 | push @r, [ $result, $warning, $exception ]; |
226 | } |
227 | |
228 | return @r; |
229 | } |
230 | |
231 | |
232 | # Things that should work just the same for an ordinary hash and a |
233 | # Tie::RefHash. |
234 | # |
235 | # Each test is a code string to be eval'd, it should do something with |
236 | # %h and give a scalar return value. The global $ref and $ref1 may |
237 | # also be used. |
238 | # |
239 | # One thing we don't test is that the ordering from 'keys', 'values' |
240 | # and 'each' is the same. You can't reasonably expect that. |
241 | # |
242 | sub standard_hash_tests { |
243 | my @r; |
244 | |
245 | # Library of standard tests on keys, values and each |
246 | my $STD_TESTS = <<'END' |
247 | join $;, sort keys %h; |
248 | join $;, sort values %h; |
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249 | { my ($v, %tmp); $tmp{$v}++ while (defined($v = each %h)); dumph(\%tmp) } |
250 | { my ($k, $v, %tmp); $tmp{"$k$;$v"}++ while (($k, $v) = each %h); dumph(\%tmp) } |
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251 | END |
252 | ; |
253 | |
254 | # Tests on the existence of the element 'foo' |
255 | my $FOO_TESTS = <<'END' |
256 | defined $h{foo}; |
257 | exists $h{foo}; |
258 | $h{foo}; |
259 | END |
260 | ; |
261 | |
262 | # Test storing and deleting 'foo' |
263 | push @r, split /\n/, <<"END" |
264 | $STD_TESTS; |
265 | $FOO_TESTS; |
266 | \$h{foo} = undef; |
267 | $STD_TESTS; |
268 | $FOO_TESTS; |
269 | \$h{foo} = 'hello'; |
270 | $STD_TESTS; |
271 | $FOO_TESTS; |
272 | delete \$h{foo}; |
273 | $STD_TESTS; |
274 | $FOO_TESTS; |
275 | END |
276 | ; |
277 | |
278 | # Test storing and removing under ordinary keys |
279 | my @things = ('boink', 0, 1, '', undef); |
280 | foreach my $key (map { dumped($_) } @things) { |
281 | foreach my $value ((map { dumped($_) } @things), '$ref') { |
282 | push @r, split /\n/, <<"END" |
283 | \$h{$key} = $value; |
284 | $STD_TESTS; |
285 | defined \$h{$key}; |
286 | exists \$h{$key}; |
287 | \$h{$key}; |
288 | delete \$h{$key}; |
289 | $STD_TESTS; |
290 | defined \$h{$key}; |
291 | exists \$h{$key}; |
292 | \$h{$key}; |
293 | END |
294 | ; |
295 | } |
296 | } |
297 | |
298 | # Test hash slices |
299 | my @slicetests; |
300 | @slicetests = split /\n/, <<'END' |
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301 | @h{'b'} = (); |
302 | @h{'c'} = ('d'); |
303 | @h{'e'} = ('f', 'g'); |
304 | @h{'h', 'i'} = (); |
305 | @h{'j', 'k'} = ('l'); |
306 | @h{'m', 'n'} = ('o', 'p'); |
307 | @h{'q', 'r'} = ('s', 't', 'u'); |
308 | END |
309 | ; |
310 | my @aaa = @slicetests; |
311 | foreach (@slicetests) { |
312 | push @r, $_; |
313 | push @r, split(/\n/, $STD_TESTS); |
314 | } |
315 | |
316 | # Test CLEAR |
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317 | push @r, '%h = ();', split(/\n/, $STD_TESTS); |
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318 | |
319 | return @r; |
320 | } |
321 | |