-
Notifications
You must be signed in to change notification settings - Fork 151
/
txn.t
474 lines (369 loc) · 13 KB
/
txn.t
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
# Test is sufficiently involved to *want* to run with "maximum paranoia"
BEGIN { $ENV{DBICTEST_OLD_MRO_SANITY_CHECK_ASSERTIONS} = 1 }
BEGIN { do "./t/lib/ANFANG.pm" or die ( $@ || $! ) }
use strict;
use warnings;
use Test::More;
use Test::Warn;
use Test::Exception;
use Errno ();
use DBICTest;
my $code = sub {
my ($artist, @cd_titles) = @_;
$artist->create_related('cds', {
title => $_,
year => 2006,
}) foreach (@cd_titles);
return $artist->cds->all;
};
# Test checking of parameters
{
my $schema = DBICTest->init_schema;
throws_ok (sub {
(ref $schema)->txn_do(sub{});
}, qr/storage/, "can't call txn_do without storage");
throws_ok {
$schema->txn_do('');
} qr/\Qrun() requires a coderef to execute as its first argument/,
'$coderef parameter check ok';
}
# Test successful txn_do() - scalar/list context
for my $want (0,1) {
my $schema = DBICTest->init_schema;
is( $schema->storage->transaction_depth, 0, 'txn depth starts at 0');
my @titles = map {'txn_do test CD ' . $_} (1..5);
my $artist = $schema->resultset('Artist')->find(1);
my $count_before = $artist->cds->count;
my @res;
if ($want) {
@res = $schema->txn_do($code, $artist, @titles);
is(scalar @res, $count_before+5, 'successful txn added 5 cds');
}
else {
$res[0] = $schema->txn_do($code, $artist, @titles);
is($res[0], $count_before+5, 'successful txn added 5 cds');
}
is($artist->cds({
title => "txn_do test CD $_",
})->first->year, 2006, "new CD $_ year correct") for (1..5);
is( $schema->storage->transaction_depth, 0, 'txn depth has been reset');
}
# Test txn_do() @_ aliasing support
{
my $schema = DBICTest->init_schema;
my $res = 'original';
$schema->storage->txn_do (sub { $_[0] = 'changed' }, $res);
is ($res, 'changed', "Arguments properly aliased for txn_do");
}
# Test nested successful txn_do()
{
my $schema = DBICTest->init_schema;
is( $schema->storage->transaction_depth, 0, 'txn depth starts at 0');
my $nested_code = sub {
my ($schema, $artist, $code) = @_;
my @titles1 = map {'nested txn_do test CD ' . $_} (1..5);
my @titles2 = map {'nested txn_do test CD ' . $_} (6..10);
$schema->txn_do($code, $artist, @titles1);
$schema->txn_do($code, $artist, @titles2);
};
my $artist = $schema->resultset('Artist')->find(2);
my $count_before = $artist->cds->count;
lives_ok (sub {
$schema->txn_do($nested_code, $schema, $artist, $code);
}, 'nested txn_do succeeded');
is($artist->cds({
title => 'nested txn_do test CD '.$_,
})->first->year, 2006, qq{nested txn_do CD$_ year ok}) for (1..10);
is($artist->cds->count, $count_before+10, 'nested txn_do added all CDs');
is( $schema->storage->transaction_depth, 0, 'txn depth has been reset');
}
# test nested txn_begin on fresh connection
{
my $schema = DBICTest->init_schema(sqlite_use_file => 1, no_deploy => 1);
$schema->storage->ensure_connected;
is ($schema->storage->transaction_depth, 0, 'Start outside txn');
my @pids;
SKIP:
for my $action (
sub {
my $s = shift;
die "$$ starts in txn!" if $s->storage->transaction_depth != 0;
$s->txn_do ( sub {
die "$$ not in txn!" if $s->storage->transaction_depth == 0;
$s->storage->dbh->do('SELECT 1') }
);
die "$$ did not finish txn!" if $s->storage->transaction_depth != 0;
},
sub {
$_[0]->txn_begin;
$_[0]->storage->dbh->do('SELECT 1');
$_[0]->txn_commit
},
sub {
my $guard = $_[0]->txn_scope_guard;
$_[0]->storage->dbh->do('SELECT 1');
$guard->commit
},
) {
my $pid = fork();
if( ! defined $pid ) {
skip "EAGAIN encountered, your system is likely bogged down: skipping forking test", 1
if $! == Errno::EAGAIN();
die "Unable to fork: $!"
}
if ($pid) {
push @pids, $pid;
next;
}
$action->($schema);
exit 0;
}
is ($schema->storage->transaction_depth, 0, 'Parent still outside txn');
for my $pid (@pids) {
waitpid ($pid, 0);
ok (! $?, "Child $pid exit ok");
}
}
# Test txn_do/scope_guard with forking: outer txn_do
{
my $schema = DBICTest->init_schema( sqlite_use_file => 1 );
for my $pass (1..2) {
# do something trying to destabilize the depth count
for (1..2) {
eval {
my $guard = $schema->txn_scope_guard;
$schema->txn_do( sub { die } );
};
is( $schema->storage->transaction_depth, 0, 'Transaction successfully aborted' );
$schema->txn_do( sub {
ok ($schema->storage->_dbh->do ('SELECT 1'), "Query after exceptions ok ($_)");
});
}
$schema->txn_do ( sub { _test_forking_action ($schema, $pass) } );
}
}
# same test with outer guard
{
my $schema = DBICTest->init_schema( sqlite_use_file => 1 );
for my $pass (1..2) {
# do something trying to destabilize the depth count
for (1..2) {
eval {
my $guard = $schema->txn_scope_guard;
$schema->txn_do( sub { die } );
};
is( $schema->storage->transaction_depth, 0, 'Transaction successfully aborted' );
$schema->txn_do( sub {
ok ($schema->storage->_dbh->do ('SELECT 1'), "Query after exceptions ok ($_)");
});
}
my $guard = $schema->txn_scope_guard;
my @pids = _test_forking_action ($schema, $pass);
$guard->commit;
}
}
sub _test_forking_action {
my ($schema, $pass) = @_;
my @pids;
SKIP: for my $count (1 .. 5) {
skip 'FIXME: Weird DBI General Protection Faults, skip forking tests (RT#63104)', 5
if $^O eq 'MSWin32';
my $pid = fork();
if( ! defined $pid ) {
skip "EAGAIN encountered, your system is likely bogged down: skipping forking test", 1
if $! == Errno::EAGAIN();
die "Unable to fork: $!"
}
if ($pid) {
push @pids, $pid;
next;
}
if ($count % 2) {
$schema->txn_do (sub {
my $depth = $schema->storage->transaction_depth;
die "$$(txn_do)unexpected txn depth $depth!" if $depth != 1;
$schema->resultset ('Artist')->create ({ name => "forking action $$"});
});
}
else {
my $guard = $schema->txn_scope_guard;
my $depth = $schema->storage->transaction_depth;
die "$$(scope_guard) unexpected txn depth $depth!" if $depth != 1;
$schema->resultset ('Artist')->create ({ name => "forking action $$"});
$guard->commit;
}
exit 0;
}
for my $pid (@pids) {
waitpid ($pid, 0);
ok (! $?, "Child $pid exit ok (pass $pass)");
}
# it is important to reap all children before checking the final db-state
# otherwise a deadlock may occur between the transactions running in the
# children and the query of the parent
for my $pid (@pids) {
isa_ok ($schema->resultset ('Artist')->find ({ name => "forking action $pid" }), 'DBIx::Class::Row');
}
}
my $fail_code = sub {
my ($artist) = @_;
$artist->create_related('cds', {
title => 'this should not exist',
year => 2005,
});
die "the sky is falling";
};
{
my $schema = DBICTest->init_schema;
# Test failed txn_do()
for my $pass (1,2) {
is( $schema->storage->transaction_depth, 0, "txn depth starts at 0 (pass $pass)");
my $artist = $schema->resultset('Artist')->find(3);
throws_ok (sub {
$schema->txn_do($fail_code, $artist);
}, qr/the sky is falling/, "failed txn_do threw an exception (pass $pass)");
my $cd = $artist->cds({
title => 'this should not exist',
year => 2005,
})->first;
ok(!defined($cd), qq{failed txn_do didn't change the cds table (pass $pass)});
is( $schema->storage->transaction_depth, 0, "txn depth has been reset (pass $pass)");
}
# Test failed txn_do() with failed rollback
{
is( $schema->storage->transaction_depth, 0, 'txn depth starts at 0');
my $artist = $schema->resultset('Artist')->find(3);
# Force txn_rollback() to throw an exception
no warnings qw/once redefine/;
# this should logically work just fine - but it does not,
# only direct override of the existing method dtrt
#local *DBIx::Class::Storage::DBI::SQLite::txn_rollback = sub { die 'FAILED' };
local *DBIx::Class::Storage::DBI::txn_rollback = sub { die 'FAILED' };
Class::C3->reinitialize() if DBIx::Class::_ENV_::OLD_MRO;
throws_ok (
sub {
$schema->txn_do($fail_code, $artist);
},
qr/the sky is falling.+Rollback failed/s,
'txn_rollback threw a rollback exception (and included the original exception'
);
my $cd = $artist->cds({
title => 'this should not exist',
year => 2005,
})->first;
isa_ok($cd, 'DBICTest::CD', q{failed txn_do with a failed txn_rollback }.
q{changed the cds table});
$cd->delete; # Rollback failed
$cd = $artist->cds({
title => 'this should not exist',
year => 2005,
})->first;
ok(!defined($cd), q{deleted the failed txn's cd});
$schema->storage->_dbh->rollback;
}
}
# Test nested failed txn_do()
{
my $schema = DBICTest->init_schema();
is( $schema->storage->transaction_depth, 0, 'txn depth starts at 0');
my $nested_fail_code = sub {
my ($schema, $artist, $code1, $code2) = @_;
my @titles = map {'nested txn_do test CD ' . $_} (1..5);
$schema->txn_do($code1, $artist, @titles); # successful txn
$schema->txn_do($code2, $artist); # failed txn
};
my $artist = $schema->resultset('Artist')->find(3);
throws_ok ( sub {
$schema->txn_do($nested_fail_code, $schema, $artist, $code, $fail_code);
}, qr/the sky is falling/, 'nested failed txn_do threw exception');
ok(!defined($artist->cds({
title => 'nested txn_do test CD '.$_,
year => 2006,
})->first), qq{failed txn_do didn't add first txn's cd $_}) for (1..5);
my $cd = $artist->cds({
title => 'this should not exist',
year => 2005,
})->first;
ok(!defined($cd), q{failed txn_do didn't add failed txn's cd});
}
# Grab a new schema to test txn before connect
# also test nested txn exception
{
my $schema = DBICTest->init_schema(no_deploy => 1);
lives_ok (sub {
$schema->txn_begin();
$schema->txn_begin();
}, 'Pre-connection nested transactions.');
throws_ok( sub { $schema->txn_rollback }, 'DBIx::Class::Storage::NESTED_ROLLBACK_EXCEPTION', 'got proper nested rollback exception' );
}
# make sure AutoCommit => 0 on external handles behaves correctly with scope_guard
warnings_are {
my $factory = DBICTest->init_schema;
cmp_ok ($factory->resultset('CD')->count, '>', 0, 'Something to delete');
my $dbh = $factory->storage->dbh;
$dbh->{AutoCommit} = 0;
ok (!$dbh->{AutoCommit}, 'AutoCommit is off on $dbh');
my $schema = DBICTest::Schema->connect (sub { $dbh });
lives_ok ( sub {
my $guard = $schema->txn_scope_guard;
$schema->resultset('CD')->delete;
$guard->commit;
}, 'No attempt to start a transaction with scope guard');
is ($schema->resultset('CD')->count, 0, 'Deletion successful in txn');
# this will commit the implicitly started txn
$dbh->commit;
} [], 'No warnings on AutoCommit => 0 with txn_guard';
# make sure AutoCommit => 0 on external handles behaves correctly with txn_do
warnings_are {
my $factory = DBICTest->init_schema;
cmp_ok ($factory->resultset('CD')->count, '>', 0, 'Something to delete');
my $dbh = $factory->storage->dbh;
$dbh->{AutoCommit} = 0;
ok (!$dbh->{AutoCommit}, 'AutoCommit is off on $dbh');
my $schema = DBICTest::Schema->connect (sub { $dbh });
lives_ok ( sub {
$schema->txn_do (sub { $schema->resultset ('CD')->delete });
}, 'No attempt to start a atransaction with txn_do');
is ($schema->resultset('CD')->count, 0, 'Deletion successful');
# this will commit the implicitly started txn
$dbh->commit;
} [], 'No warnings on AutoCommit => 0 with txn_do';
# make sure we are not fucking up the stacktrace on broken overloads
{
package DBICTest::BrokenOverload;
use overload '""' => sub { $_[0] };
}
{
my @w;
local $SIG{__WARN__} = sub {
$_[0] =~ /\QExternal exception class DBICTest::BrokenOverload implements partial (broken) overloading preventing its instances from being used in simple (\E\$x eq \$y\Q) comparisons/
? push @w, @_
: warn @_
};
my $s = DBICTest->init_schema(no_deploy => 1);
$s->stacktrace(0);
my $g = $s->storage->txn_scope_guard;
my $broken_exception = bless {}, 'DBICTest::BrokenOverload';
# FIXME - investigate what confuses the regex engine below
# do not reformat - line-num part of the test
my $ln = __LINE__ + 6;
throws_ok {
$s->txn_do( sub {
$s->txn_do( sub {
$s->storage->_dbh->disconnect;
die $broken_exception
});
})
} qr/\QTransaction aborted: $broken_exception. Rollback failed: DBIx::Class::Storage::DBI::txn_rollback(): lost connection to storage at @{[__FILE__]} line $ln\E\n/; # FIXME wtf - ...\E$/m doesn't work here
is @w, 1, 'One matching warning only';
# try the same broken exception object, but have exception_action inject it
$s->exception_action(sub { die $broken_exception });
eval {
$s->txn_do( sub {
die "some string masked away";
});
};
isa_ok $@, 'DBICTest::BrokenOverload', 'Deficient exception properly propagated';
is @w, 2, 'The warning was emitted a second time';
}
done_testing;