Commit | Line | Data |
fffe6900 |
1 | package SQL::Abstract::Test; # see doc at end of file |
2 | |
3 | use strict; |
4 | use warnings; |
ba3f5e40 |
5 | use base qw(Test::Builder::Module); |
4abea32b |
6 | use Test::Builder; |
328c5eac |
7 | use Test::Deep (); |
01dd4e4f |
8 | use SQL::Abstract::Tree; |
fffe6900 |
9 | |
2fadf08e |
10 | our @EXPORT_OK = qw( |
11 | is_same_sql_bind is_same_sql is_same_bind |
12 | eq_sql_bind eq_sql eq_bind dumper diag_where |
13 | $case_sensitive $sql_differ |
14 | ); |
fffe6900 |
15 | |
a24cc3a0 |
16 | my $sqlat = SQL::Abstract::Tree->new; |
17 | |
fffe6900 |
18 | our $case_sensitive = 0; |
e40f5df9 |
19 | our $parenthesis_significant = 0; |
0c2de280 |
20 | our $order_by_asc_significant = 0; |
21 | |
fffe6900 |
22 | our $sql_differ; # keeps track of differing portion between SQLs |
70af236b |
23 | our $tb; # not documented, but someone might be overriding it anyway |
fffe6900 |
24 | |
70c6f0e9 |
25 | sub _unpack_arrayrefref { |
26 | |
27 | my @args; |
28 | for (1,2) { |
29 | my $chunk = shift @_; |
30 | |
ca4f826a |
31 | if (ref $chunk eq 'REF' and ref $$chunk eq 'ARRAY') { |
70c6f0e9 |
32 | my ($sql, @bind) = @$$chunk; |
33 | push @args, ($sql, \@bind); |
34 | } |
35 | else { |
36 | push @args, $chunk, shift @_; |
37 | } |
38 | |
39 | } |
40 | |
41 | # maybe $msg and ... stuff |
42 | push @args, @_; |
43 | |
44 | @args; |
45 | } |
46 | |
fffe6900 |
47 | sub is_same_sql_bind { |
70c6f0e9 |
48 | my ($sql1, $bind_ref1, $sql2, $bind_ref2, $msg) = &_unpack_arrayrefref; |
fffe6900 |
49 | |
50 | # compare |
25823711 |
51 | my $same_sql = eq_sql($sql1, $sql2); |
fffe6900 |
52 | my $same_bind = eq_bind($bind_ref1, $bind_ref2); |
53 | |
a6daa642 |
54 | # call Test::Builder::ok |
70af236b |
55 | my $tb = $tb || __PACKAGE__->builder; |
1a828f61 |
56 | my $ret = $tb->ok($same_sql && $same_bind, $msg); |
fffe6900 |
57 | |
58 | # add debugging info |
59 | if (!$same_sql) { |
e7827ba2 |
60 | _sql_differ_diag($sql1, $sql2); |
fffe6900 |
61 | } |
62 | if (!$same_bind) { |
e7827ba2 |
63 | _bind_differ_diag($bind_ref1, $bind_ref2); |
fffe6900 |
64 | } |
1a828f61 |
65 | |
66 | # pass ok() result further |
67 | return $ret; |
fffe6900 |
68 | } |
69 | |
e7827ba2 |
70 | sub is_same_sql { |
71 | my ($sql1, $sql2, $msg) = @_; |
72 | |
73 | # compare |
70c6f0e9 |
74 | my $same_sql = eq_sql($sql1, $sql2); |
e7827ba2 |
75 | |
76 | # call Test::Builder::ok |
70af236b |
77 | my $tb = $tb || __PACKAGE__->builder; |
1a828f61 |
78 | my $ret = $tb->ok($same_sql, $msg); |
e7827ba2 |
79 | |
80 | # add debugging info |
81 | if (!$same_sql) { |
82 | _sql_differ_diag($sql1, $sql2); |
83 | } |
1a828f61 |
84 | |
85 | # pass ok() result further |
86 | return $ret; |
e7827ba2 |
87 | } |
88 | |
89 | sub is_same_bind { |
90 | my ($bind_ref1, $bind_ref2, $msg) = @_; |
91 | |
92 | # compare |
93 | my $same_bind = eq_bind($bind_ref1, $bind_ref2); |
94 | |
95 | # call Test::Builder::ok |
70af236b |
96 | my $tb = $tb || __PACKAGE__->builder; |
1a828f61 |
97 | my $ret = $tb->ok($same_bind, $msg); |
e7827ba2 |
98 | |
99 | # add debugging info |
100 | if (!$same_bind) { |
101 | _bind_differ_diag($bind_ref1, $bind_ref2); |
102 | } |
1a828f61 |
103 | |
104 | # pass ok() result further |
105 | return $ret; |
e7827ba2 |
106 | } |
107 | |
2fadf08e |
108 | sub dumper { |
70c6f0e9 |
109 | # FIXME |
110 | # if we save the instance, we will end up with $VARx references |
111 | # no time to figure out how to avoid this (Deepcopy is *not* an option) |
112 | require Data::Dumper; |
113 | Data::Dumper->new([])->Terse(1)->Indent(1)->Useqq(1)->Deparse(1)->Quotekeys(0)->Sortkeys(1)->Maxdepth(0) |
114 | ->Values([@_])->Dump; |
2fadf08e |
115 | } |
116 | |
117 | sub diag_where{ |
70af236b |
118 | my $tb = $tb || __PACKAGE__->builder; |
ca4f826a |
119 | $tb->diag("Search term:\n" . &dumper); |
2fadf08e |
120 | } |
121 | |
e7827ba2 |
122 | sub _sql_differ_diag { |
70c6f0e9 |
123 | my $sql1 = shift || ''; |
124 | my $sql2 = shift || ''; |
e7827ba2 |
125 | |
70af236b |
126 | my $tb = $tb || __PACKAGE__->builder; |
ca4f826a |
127 | $tb->${\($tb->in_todo ? 'note' : 'diag')} ( |
b3437526 |
128 | "SQL expressions differ\n" |
70c6f0e9 |
129 | ." got: $sql1\n" |
130 | ."want: $sql2\n" |
131 | ."\nmismatch around\n$sql_differ\n" |
b3437526 |
132 | ); |
e7827ba2 |
133 | } |
134 | |
135 | sub _bind_differ_diag { |
136 | my ($bind_ref1, $bind_ref2) = @_; |
137 | |
e026e02a |
138 | my $tb = $tb || __PACKAGE__->builder; |
ca4f826a |
139 | $tb->${\($tb->in_todo ? 'note' : 'diag')} ( |
70c6f0e9 |
140 | "BIND values differ " . dumper({ got => $bind_ref1, want => $bind_ref2 }) |
141 | ); |
e7827ba2 |
142 | } |
143 | |
144 | sub eq_sql_bind { |
70c6f0e9 |
145 | my ($sql1, $bind_ref1, $sql2, $bind_ref2) = &_unpack_arrayrefref; |
e7827ba2 |
146 | |
147 | return eq_sql($sql1, $sql2) && eq_bind($bind_ref1, $bind_ref2); |
148 | } |
149 | |
150 | |
328c5eac |
151 | sub eq_bind { goto &Test::Deep::eq_deeply }; |
fffe6900 |
152 | |
153 | sub eq_sql { |
25823711 |
154 | my ($sql1, $sql2) = @_; |
155 | |
156 | # parse |
a24cc3a0 |
157 | my $tree1 = $sqlat->parse($sql1); |
158 | my $tree2 = $sqlat->parse($sql2); |
25823711 |
159 | |
6f2a5b66 |
160 | undef $sql_differ; |
1b17d1b0 |
161 | return 1 if _eq_sql($tree1, $tree2); |
25823711 |
162 | } |
163 | |
164 | sub _eq_sql { |
fffe6900 |
165 | my ($left, $right) = @_; |
166 | |
939db550 |
167 | # one is defined the other not |
ca4f826a |
168 | if ((defined $left) xor (defined $right)) { |
169 | $sql_differ = sprintf ("[%s] != [%s]\n", map { defined $_ ? $sqlat->unparse($_) : 'N/A' } ($left, $right) ); |
939db550 |
170 | return 0; |
171 | } |
6f2a5b66 |
172 | |
939db550 |
173 | # one is undefined, then so is the other |
174 | elsif (not defined $left) { |
d15c14cc |
175 | return 1; |
176 | } |
6f2a5b66 |
177 | |
178 | # both are empty |
179 | elsif (@$left == 0 and @$right == 0) { |
0769ac0e |
180 | return 1; |
181 | } |
6f2a5b66 |
182 | |
183 | # one is empty |
184 | if (@$left == 0 or @$right == 0) { |
ca4f826a |
185 | $sql_differ = sprintf ("left: %s\nright: %s\n", map { @$_ ? $sqlat->unparse($_) : 'N/A'} ($left, $right) ); |
6f2a5b66 |
186 | return 0; |
187 | } |
188 | |
1b17d1b0 |
189 | # one is a list, the other is an op with a list |
190 | elsif (ref $left->[0] xor ref $right->[0]) { |
6f2a5b66 |
191 | $sql_differ = sprintf ("[%s] != [%s]\nleft: %s\nright: %s\n", map |
ca4f826a |
192 | { ref $_ ? $sqlat->unparse($_) : $_ } |
6f2a5b66 |
193 | ($left->[0], $right->[0], $left, $right) |
194 | ); |
fffe6900 |
195 | return 0; |
196 | } |
6f2a5b66 |
197 | |
198 | # both are lists |
1b17d1b0 |
199 | elsif (ref $left->[0]) { |
200 | for (my $i = 0; $i <= $#$left or $i <= $#$right; $i++ ) { |
6f2a5b66 |
201 | if (not _eq_sql ($left->[$i], $right->[$i]) ) { |
202 | if (! $sql_differ or $sql_differ !~ /left\:\s .+ right:\s/xs) { |
203 | $sql_differ ||= ''; |
204 | $sql_differ .= "\n" unless $sql_differ =~ /\n\z/; |
ca4f826a |
205 | $sql_differ .= sprintf ("left: %s\nright: %s\n", map { $sqlat->unparse($_) } ($left, $right) ); |
6f2a5b66 |
206 | } |
207 | return 0; |
208 | } |
1b17d1b0 |
209 | } |
210 | return 1; |
211 | } |
6f2a5b66 |
212 | |
213 | # both are ops |
1b17d1b0 |
214 | else { |
215 | |
e40f5df9 |
216 | # unroll parenthesis if possible/allowed |
ca4f826a |
217 | unless ($parenthesis_significant) { |
6f2a5b66 |
218 | $sqlat->_parenthesis_unroll($_) for $left, $right; |
219 | } |
1b17d1b0 |
220 | |
0c2de280 |
221 | # unroll ASC order by's |
222 | unless ($order_by_asc_significant) { |
223 | $sqlat->_strip_asc_from_order_by($_) for $left, $right; |
224 | } |
225 | |
ca4f826a |
226 | if ($left->[0] ne $right->[0]) { |
1b17d1b0 |
227 | $sql_differ = sprintf "OP [$left->[0]] != [$right->[0]] in\nleft: %s\nright: %s\n", |
a24cc3a0 |
228 | $sqlat->unparse($left), |
6f2a5b66 |
229 | $sqlat->unparse($right) |
230 | ; |
1b17d1b0 |
231 | return 0; |
232 | } |
6f2a5b66 |
233 | |
234 | # literals have a different arg-sig |
235 | elsif ($left->[0] eq '-LITERAL') { |
236 | (my $l = " $left->[1][0] " ) =~ s/\s+/ /g; |
237 | (my $r = " $right->[1][0] ") =~ s/\s+/ /g; |
238 | my $eq = $case_sensitive ? $l eq $r : uc($l) eq uc($r); |
239 | $sql_differ = "[$l] != [$r]\n" if not $eq; |
240 | return $eq; |
241 | } |
242 | |
243 | # if operators are identical, compare operands |
01dd4e4f |
244 | else { |
6f2a5b66 |
245 | my $eq = _eq_sql($left->[1], $right->[1]); |
ca4f826a |
246 | $sql_differ ||= sprintf ("left: %s\nright: %s\n", map { $sqlat->unparse($_) } ($left, $right) ) if not $eq; |
6f2a5b66 |
247 | return $eq; |
fffe6900 |
248 | } |
249 | } |
250 | } |
251 | |
7853a177 |
252 | sub parse { $sqlat->parse(@_) } |
fffe6900 |
253 | 1; |
254 | |
255 | |
256 | __END__ |
257 | |
258 | =head1 NAME |
259 | |
260 | SQL::Abstract::Test - Helper function for testing SQL::Abstract |
261 | |
262 | =head1 SYNOPSIS |
263 | |
264 | use SQL::Abstract; |
265 | use Test::More; |
e7827ba2 |
266 | use SQL::Abstract::Test import => [qw/ |
267 | is_same_sql_bind is_same_sql is_same_bind |
268 | eq_sql_bind eq_sql eq_bind |
269 | /]; |
ec9af79e |
270 | |
fffe6900 |
271 | my ($sql, @bind) = SQL::Abstract->new->select(%args); |
e7827ba2 |
272 | |
01dd4e4f |
273 | is_same_sql_bind($given_sql, \@given_bind, |
fffe6900 |
274 | $expected_sql, \@expected_bind, $test_msg); |
275 | |
e7827ba2 |
276 | is_same_sql($given_sql, $expected_sql, $test_msg); |
277 | is_same_bind(\@given_bind, \@expected_bind, $test_msg); |
278 | |
01dd4e4f |
279 | my $is_same = eq_sql_bind($given_sql, \@given_bind, |
e7827ba2 |
280 | $expected_sql, \@expected_bind); |
281 | |
282 | my $sql_same = eq_sql($given_sql, $expected_sql); |
283 | my $bind_same = eq_bind(\@given_bind, \@expected_bind); |
284 | |
fffe6900 |
285 | =head1 DESCRIPTION |
286 | |
287 | This module is only intended for authors of tests on |
288 | L<SQL::Abstract|SQL::Abstract> and related modules; |
289 | it exports functions for comparing two SQL statements |
290 | and their bound values. |
291 | |
292 | The SQL comparison is performed on I<abstract syntax>, |
293 | ignoring differences in spaces or in levels of parentheses. |
294 | Therefore the tests will pass as long as the semantics |
295 | is preserved, even if the surface syntax has changed. |
296 | |
ec9af79e |
297 | B<Disclaimer> : the semantic equivalence handling is pretty limited. |
298 | A lot of effort goes into distinguishing significant from |
299 | non-significant parenthesis, including AND/OR operator associativity. |
300 | Currently this module does not support commutativity and more |
70c6f0e9 |
301 | intelligent transformations like L<De Morgan's laws |
302 | |http://en.wikipedia.org/wiki/De_Morgan's_laws>, etc. |
ec9af79e |
303 | |
70c6f0e9 |
304 | For a good overview of what this test framework is currently capable of refer |
ec9af79e |
305 | to C<t/10test.t> |
fffe6900 |
306 | |
307 | =head1 FUNCTIONS |
308 | |
309 | =head2 is_same_sql_bind |
310 | |
70c6f0e9 |
311 | is_same_sql_bind( |
312 | $given_sql, \@given_bind, |
313 | $expected_sql, \@expected_bind, |
314 | $test_msg |
315 | ); |
fffe6900 |
316 | |
70c6f0e9 |
317 | is_same_sql_bind( |
318 | \[$given_sql, @given_bind], |
319 | \[$expected_sql, @expected_bind], |
320 | $test_msg |
321 | ); |
322 | |
323 | is_same_sql_bind( |
324 | $dbic_rs->as_query |
325 | $expected_sql, \@expected_bind, |
326 | $test_msg |
327 | ); |
328 | |
329 | Compares given and expected pairs of C<($sql, \@bind)> by unpacking C<@_> |
330 | as shown in the examples above and passing the arguments to L</eq_sql> and |
331 | L</eq_bind>. Calls L<Test::Builder/ok> with the combined result, with |
332 | C<$test_msg> as message. |
333 | If the test fails, a detailed diagnostic is printed. |
e7827ba2 |
334 | |
335 | =head2 is_same_sql |
336 | |
70c6f0e9 |
337 | is_same_sql( |
338 | $given_sql, |
339 | $expected_sql, |
340 | $test_msg |
341 | ); |
e7827ba2 |
342 | |
70c6f0e9 |
343 | Compares given and expected SQL statements via L</eq_sql>, and calls |
344 | L<Test::Builder/ok> on the result, with C<$test_msg> as message. |
345 | If the test fails, a detailed diagnostic is printed. |
e7827ba2 |
346 | |
347 | =head2 is_same_bind |
348 | |
70c6f0e9 |
349 | is_same_bind( |
350 | \@given_bind, |
351 | \@expected_bind, |
352 | $test_msg |
353 | ); |
e7827ba2 |
354 | |
70c6f0e9 |
355 | Compares given and expected bind values via L</eq_bind>, and calls |
356 | L<Test::Builder/ok> on the result, with C<$test_msg> as message. |
357 | If the test fails, a detailed diagnostic is printed. |
e7827ba2 |
358 | |
359 | =head2 eq_sql_bind |
360 | |
70c6f0e9 |
361 | my $is_same = eq_sql_bind( |
362 | $given_sql, \@given_bind, |
363 | $expected_sql, \@expected_bind, |
364 | ); |
e7827ba2 |
365 | |
70c6f0e9 |
366 | my $is_same = eq_sql_bind( |
367 | \[$given_sql, @given_bind], |
368 | \[$expected_sql, @expected_bind], |
369 | ); |
370 | |
371 | my $is_same = eq_sql_bind( |
372 | $dbic_rs->as_query |
373 | $expected_sql, \@expected_bind, |
374 | ); |
375 | |
376 | Unpacks C<@_> depending on the given arguments and calls L</eq_sql> and |
377 | L</eq_bind>, returning their combined result. |
fffe6900 |
378 | |
379 | =head2 eq_sql |
380 | |
381 | my $is_same = eq_sql($given_sql, $expected_sql); |
382 | |
e7827ba2 |
383 | Compares the abstract syntax of two SQL statements. Similar to L</is_same_sql>, |
384 | but it just returns a boolean value and does not print diagnostics or talk to |
385 | L<Test::Builder>. If the result is false, the global variable L</$sql_differ> |
386 | will contain the SQL portion where a difference was encountered; this is useful |
387 | for printing diagnostics. |
fffe6900 |
388 | |
389 | =head2 eq_bind |
390 | |
391 | my $is_same = eq_sql(\@given_bind, \@expected_bind); |
392 | |
e7827ba2 |
393 | Compares two lists of bind values, taking into account the fact that some of |
394 | the values may be arrayrefs (see L<SQL::Abstract/bindtype>). Similar to |
395 | L</is_same_bind>, but it just returns a boolean value and does not print |
396 | diagnostics or talk to L<Test::Builder>. |
fffe6900 |
397 | |
398 | =head1 GLOBAL VARIABLES |
399 | |
e7827ba2 |
400 | =head2 $case_sensitive |
fffe6900 |
401 | |
402 | If true, SQL comparisons will be case-sensitive. Default is false; |
403 | |
e40f5df9 |
404 | =head2 $parenthesis_significant |
405 | |
406 | If true, SQL comparison will preserve and report difference in nested |
48d9f5f8 |
407 | parenthesis. Useful while testing C<IN (( x ))> vs C<IN ( x )>. |
408 | Defaults to false; |
e40f5df9 |
409 | |
0c2de280 |
410 | =head2 $order_by_asc_significant |
411 | |
412 | If true SQL comparison will consider C<ORDER BY foo ASC> and |
413 | C<ORDER BY foo> to be different. Default is false; |
414 | |
e7827ba2 |
415 | =head2 $sql_differ |
fffe6900 |
416 | |
417 | When L</eq_sql> returns false, the global variable |
418 | C<$sql_differ> contains the SQL portion |
419 | where a difference was encountered. |
420 | |
fffe6900 |
421 | =head1 SEE ALSO |
422 | |
a6daa642 |
423 | L<SQL::Abstract>, L<Test::More>, L<Test::Builder>. |
fffe6900 |
424 | |
25823711 |
425 | =head1 AUTHORS |
fffe6900 |
426 | |
70c6f0e9 |
427 | Laurent Dami <laurent.dami AT etat geneve ch> |
fffe6900 |
428 | |
25823711 |
429 | Norbert Buchmuller <norbi@nix.hu> |
430 | |
e96c510a |
431 | Peter Rabbitson <ribasushi@cpan.org> |
432 | |
fffe6900 |
433 | =head1 COPYRIGHT AND LICENSE |
434 | |
435 | Copyright 2008 by Laurent Dami. |
436 | |
437 | This library is free software; you can redistribute it and/or modify |
01dd4e4f |
438 | it under the same terms as Perl itself. |