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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'; |
16 | } |
17 | |
18 | use strict; |
19 | use Tie::RefHash; |
20 | use Data::Dumper; |
21 | my $numtests = 34; |
22 | my $currtest = 1; |
23 | print "1..$numtests\n"; |
24 | |
25 | my $ref = []; my $ref1 = []; |
26 | |
27 | # Test standard hash functionality, by performing the same operations |
28 | # on a tied hash and on a normal hash, and checking that the results |
29 | # are the same. This does of course assume that Perl hashes are not |
30 | # buggy :-) |
31 | # |
32 | my @tests = standard_hash_tests(); |
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33 | |
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34 | my @ordinary_results = runtests(\@tests, undef); |
35 | foreach my $class ('Tie::RefHash', 'Tie::RefHash::Nestable') { |
36 | my @tied_results = runtests(\@tests, $class); |
37 | my $all_ok = 1; |
38 | |
39 | die if @ordinary_results != @tied_results; |
40 | foreach my $i (0 .. $#ordinary_results) { |
41 | my ($or, $ow, $oe) = @{$ordinary_results[$i]}; |
42 | my ($tr, $tw, $te) = @{$tied_results[$i]}; |
43 | |
44 | my $ok = 1; |
45 | local $^W = 0; |
46 | $ok = 0 if (defined($or) != defined($tr)) or ($or ne $tr); |
47 | $ok = 0 if (defined($ow) != defined($tw)) or ($ow ne $tw); |
48 | $ok = 0 if (defined($oe) != defined($te)) or ($oe ne $te); |
49 | |
50 | if (not $ok) { |
51 | print STDERR |
52 | "failed for $class: $tests[$i]\n", |
53 | "ordinary hash gave:\n", |
54 | defined $or ? "\tresult: $or\n" : "\tundef result\n", |
55 | defined $ow ? "\twarning: $ow\n" : "\tno warning\n", |
56 | defined $oe ? "\texception: $oe\n" : "\tno exception\n", |
57 | "tied $class hash gave:\n", |
58 | defined $tr ? "\tresult: $tr\n" : "\tundef result\n", |
59 | defined $tw ? "\twarning: $tw\n" : "\tno warning\n", |
60 | defined $te ? "\texception: $te\n" : "\tno exception\n", |
61 | "\n"; |
62 | $all_ok = 0; |
63 | } |
64 | } |
65 | test($all_ok); |
66 | } |
67 | |
68 | # Now test Tie::RefHash's special powers |
69 | my (%h, $h); |
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70 | $h = eval { tie %h, 'Tie::RefHash' }; |
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71 | warn $@ if $@; |
72 | test(not $@); |
73 | test(ref($h) eq 'Tie::RefHash'); |
74 | test(defined(tied(%h)) and tied(%h) =~ /^Tie::RefHash/); |
75 | $h{$ref} = 'cholet'; |
76 | test($h{$ref} eq 'cholet'); |
77 | test(exists $h{$ref}); |
78 | test((keys %h) == 1); |
79 | test(ref((keys %h)[0]) eq 'ARRAY'); |
80 | test((keys %h)[0] eq $ref); |
81 | test((values %h) == 1); |
82 | test((values %h)[0] eq 'cholet'); |
83 | my $count = 0; |
84 | while (my ($k, $v) = each %h) { |
85 | if ($count++ == 0) { |
86 | test(ref($k) eq 'ARRAY'); |
87 | test($k eq $ref); |
88 | } |
89 | } |
90 | test($count == 1); |
91 | delete $h{$ref}; |
92 | test(not defined $h{$ref}); |
93 | test(not exists($h{$ref})); |
94 | test((keys %h) == 0); |
95 | test((values %h) == 0); |
96 | undef $h; |
97 | untie %h; |
98 | |
99 | # And now Tie::RefHash::Nestable's differences from Tie::RefHash. |
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100 | $h = eval { tie %h, 'Tie::RefHash::Nestable' }; |
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101 | warn $@ if $@; |
102 | test(not $@); |
103 | test(ref($h) eq 'Tie::RefHash::Nestable'); |
104 | test(defined(tied(%h)) and tied(%h) =~ /^Tie::RefHash::Nestable/); |
105 | $h{$ref}->{$ref1} = 'bungo'; |
106 | test($h{$ref}->{$ref1} eq 'bungo'); |
107 | |
108 | # Test that the nested hash is also tied (for current implementation) |
109 | test(defined(tied(%{$h{$ref}})) |
110 | and tied(%{$h{$ref}}) =~ /^Tie::RefHash::Nestable=/ ); |
111 | |
112 | test((keys %h) == 1); |
113 | test((keys %h)[0] eq $ref); |
114 | test((keys %{$h{$ref}}) == 1); |
115 | test((keys %{$h{$ref}})[0] eq $ref1); |
116 | |
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117 | |
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118 | die "expected to run $numtests tests, but ran ", $currtest - 1 |
119 | if $currtest - 1 != $numtests; |
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120 | |
121 | @tests = (); |
122 | undef $ref; |
123 | undef $ref1; |
124 | |
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125 | exit(); |
126 | |
127 | |
128 | # Print 'ok X' if true, 'not ok X' if false |
129 | # Uses global $currtest. |
130 | # |
131 | sub test { |
132 | my $t = shift; |
133 | print 'not ' if not $t; |
134 | print 'ok ', $currtest++, "\n"; |
135 | } |
136 | |
137 | |
138 | # Wrapper for Data::Dumper to 'dump' a scalar as an EXPR string. |
139 | sub dumped { |
140 | my $s = shift; |
141 | my $d = Dumper($s); |
142 | $d =~ s/^\$VAR1 =\s*//; |
143 | $d =~ s/;$//; |
144 | chomp $d; |
145 | return $d; |
146 | } |
147 | |
148 | # Crudely dump a hash into a canonical string representation (because |
149 | # hash keys can appear in any order, Data::Dumper may give different |
150 | # strings for the same hash). |
151 | # |
152 | sub dumph { |
153 | my $h = shift; |
154 | my $r = ''; |
155 | foreach (sort keys %$h) { |
156 | $r = dumped($_) . ' => ' . dumped($h->{$_}) . "\n"; |
157 | } |
158 | return $r; |
159 | } |
160 | |
161 | # Run the tests and give results. |
162 | # |
163 | # Parameters: reference to list of tests to run |
164 | # name of class to use for tied hash, or undef if not tied |
165 | # |
166 | # Returns: list of [R, W, E] tuples, one for each test. |
167 | # R is the return value from running the test, W any warnings it gave, |
168 | # and E any exception raised with 'die'. E and W will be tidied up a |
169 | # little to remove irrelevant details like line numbers :-) |
170 | # |
171 | # Will also run a few of its own 'ok N' tests. |
172 | # |
173 | sub runtests { |
174 | my ($tests, $class) = @_; |
175 | my @r; |
176 | |
177 | my (%h, $h); |
178 | if (defined $class) { |
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179 | $h = eval { tie %h, $class }; |
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180 | warn $@ if $@; |
181 | test(not $@); |
182 | test(ref($h) eq $class); |
183 | test(defined(tied(%h)) and tied(%h) =~ /^\Q$class\E/); |
184 | } |
185 | |
186 | foreach (@$tests) { |
187 | my ($result, $warning, $exception); |
188 | local $SIG{__WARN__} = sub { $warning .= $_[0] }; |
189 | $result = scalar(eval $_); |
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190 | if ($@) |
191 | { |
192 | die "$@:$_" unless defined $class; |
193 | $exception = $@; |
194 | } |
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195 | |
196 | foreach ($warning, $exception) { |
197 | next if not defined; |
198 | s/ at .+ line \d+\.$//mg; |
199 | s/ at .+ line \d+, at .*//mg; |
200 | s/ at .+ line \d+, near .*//mg; |
201 | } |
202 | |
203 | my (@warnings, %seen); |
204 | foreach (split /\n/, $warning) { |
205 | push @warnings, $_ unless $seen{$_}++; |
206 | } |
207 | $warning = join("\n", @warnings); |
208 | |
209 | push @r, [ $result, $warning, $exception ]; |
210 | } |
211 | |
212 | return @r; |
213 | } |
214 | |
215 | |
216 | # Things that should work just the same for an ordinary hash and a |
217 | # Tie::RefHash. |
218 | # |
219 | # Each test is a code string to be eval'd, it should do something with |
220 | # %h and give a scalar return value. The global $ref and $ref1 may |
221 | # also be used. |
222 | # |
223 | # One thing we don't test is that the ordering from 'keys', 'values' |
224 | # and 'each' is the same. You can't reasonably expect that. |
225 | # |
226 | sub standard_hash_tests { |
227 | my @r; |
228 | |
229 | # Library of standard tests on keys, values and each |
230 | my $STD_TESTS = <<'END' |
231 | join $;, sort keys %h; |
232 | join $;, sort values %h; |
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233 | { my ($v, %tmp); $tmp{$v}++ while (defined($v = each %h)); dumph(\%tmp) } |
234 | { my ($k, $v, %tmp); $tmp{"$k$;$v"}++ while (($k, $v) = each %h); dumph(\%tmp) } |
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235 | END |
236 | ; |
237 | |
238 | # Tests on the existence of the element 'foo' |
239 | my $FOO_TESTS = <<'END' |
240 | defined $h{foo}; |
241 | exists $h{foo}; |
242 | $h{foo}; |
243 | END |
244 | ; |
245 | |
246 | # Test storing and deleting 'foo' |
247 | push @r, split /\n/, <<"END" |
248 | $STD_TESTS; |
249 | $FOO_TESTS; |
250 | \$h{foo} = undef; |
251 | $STD_TESTS; |
252 | $FOO_TESTS; |
253 | \$h{foo} = 'hello'; |
254 | $STD_TESTS; |
255 | $FOO_TESTS; |
256 | delete \$h{foo}; |
257 | $STD_TESTS; |
258 | $FOO_TESTS; |
259 | END |
260 | ; |
261 | |
262 | # Test storing and removing under ordinary keys |
263 | my @things = ('boink', 0, 1, '', undef); |
264 | foreach my $key (map { dumped($_) } @things) { |
265 | foreach my $value ((map { dumped($_) } @things), '$ref') { |
266 | push @r, split /\n/, <<"END" |
267 | \$h{$key} = $value; |
268 | $STD_TESTS; |
269 | defined \$h{$key}; |
270 | exists \$h{$key}; |
271 | \$h{$key}; |
272 | delete \$h{$key}; |
273 | $STD_TESTS; |
274 | defined \$h{$key}; |
275 | exists \$h{$key}; |
276 | \$h{$key}; |
277 | END |
278 | ; |
279 | } |
280 | } |
281 | |
282 | # Test hash slices |
283 | my @slicetests; |
284 | @slicetests = split /\n/, <<'END' |
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285 | @h{'b'} = (); |
286 | @h{'c'} = ('d'); |
287 | @h{'e'} = ('f', 'g'); |
288 | @h{'h', 'i'} = (); |
289 | @h{'j', 'k'} = ('l'); |
290 | @h{'m', 'n'} = ('o', 'p'); |
291 | @h{'q', 'r'} = ('s', 't', 'u'); |
292 | END |
293 | ; |
294 | my @aaa = @slicetests; |
295 | foreach (@slicetests) { |
296 | push @r, $_; |
297 | push @r, split(/\n/, $STD_TESTS); |
298 | } |
299 | |
300 | # Test CLEAR |
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301 | push @r, '%h = ();', split(/\n/, $STD_TESTS); |
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302 | |
303 | return @r; |
304 | } |
305 | |