Annotation of embedaddon/sqlite3/test/tkt2409.test, revision 1.1.1.1
1.1 misho 1: # 2007 June 13
2: #
3: # The author disclaims copyright to this source code. In place of
4: # a legal notice, here is a blessing:
5: #
6: # May you do good and not evil.
7: # May you find forgiveness for yourself and forgive others.
8: # May you share freely, never taking more than you give.
9: #
10: #***********************************************************************
11: # This file implements regression tests for SQLite library.
12: #
13: # This file implements tests to verify that ticket #2409 has been
14: # fixed. More specifically, they verify that if SQLite cannot
15: # obtain an EXCLUSIVE lock while trying to spill the cache during
16: # any statement other than a COMMIT, an I/O error is returned instead
17: # of SQLITE_BUSY.
18: #
19: # $Id: tkt2409.test,v 1.6 2008/08/28 17:46:19 drh Exp $
20:
21: # Test Outline:
22: #
23: # tkt-2409-1.*: Cause a cache-spill during an INSERT that is within
24: # a db transaction but does not start a statement transaction.
25: # Verify that the transaction is automatically rolled back
26: # and SQLITE_IOERR_BLOCKED is returned
27: #
28: # UPDATE: As of the pcache modifications, failing to upgrade to
29: # an exclusive lock when attempting a cache-spill is no longer an
30: # error. The pcache module allocates more space and keeps working
31: # in memory if this occurs.
32: #
33: # tkt-2409-2.*: Cause a cache-spill while updating the change-counter
34: # during a database COMMIT. Verify that the transaction is not
35: # rolled back and SQLITE_BUSY is returned.
36: #
37: # tkt-2409-3.*: Similar to 2409-1.*, but using many INSERT statements
38: # within a transaction instead of just one.
39: #
40: # UPDATE: Again, pcache now just keeps working in main memory.
41: #
42: # tkt-2409-4.*: Similar to 2409-1.*, but rig it so that the
43: # INSERT statement starts a statement transaction. Verify that
44: # SQLITE_BUSY is returned and the transaction is not rolled back.
45: #
46: # UPDATE: This time, SQLITE_BUSY is not returned. pcache just uses
47: # more malloc()'d memory.
48: #
49:
50: set testdir [file dirname $argv0]
51: source $testdir/tester.tcl
52:
53: ifcapable !pager_pragmas {
54: finish_test
55: return
56: }
57:
58: sqlite3_extended_result_codes $::DB 1
59:
60: # Aquire a read-lock on the database using handle [db2].
61: #
62: proc read_lock_db {} {
63: if {$::STMT eq ""} {
64: set ::STMT [sqlite3_prepare db2 {SELECT rowid FROM sqlite_master} -1 TAIL]
65: set rc [sqlite3_step $::STMT]
66: if {$rc eq "SQLITE_ERROR"} {
67: unread_lock_db
68: read_lock_db
69: }
70: }
71: }
72:
73: # Release any read-lock obtained using [read_lock_db]
74: #
75: proc unread_lock_db {} {
76: if {$::STMT ne ""} {
77: sqlite3_finalize $::STMT
78: set ::STMT ""
79: }
80: }
81:
82: # Open the db handle used by [read_lock_db].
83: #
84: sqlite3 db2 test.db
85: set ::STMT ""
86:
87: do_test tkt2409-1.1 {
88: execsql {
89: PRAGMA cache_size=10;
90: CREATE TABLE t1(x TEXT UNIQUE NOT NULL, y BLOB);
91: }
92: read_lock_db
93: set ::zShort [string repeat 0123456789 1]
94: set ::zLong [string repeat 0123456789 1500]
95: catchsql {
96: BEGIN;
97: INSERT INTO t1 VALUES($::zShort, $::zLong);
98: }
99: } {0 {}}
100:
101: do_test tkt2409-1.2 {
102: sqlite3_errcode $::DB
103: } {SQLITE_OK}
104:
105: # Check the integrity of the cache.
106: #
107: integrity_check tkt2409-1.3
108:
109: # Check that the transaction was rolled back. Because the INSERT
110: # statement in which the "I/O error" occured did not open a statement
111: # transaction, SQLite had no choice but to roll back the transaction.
112: #
113: do_test tkt2409-1.4 {
114: unread_lock_db
115: catchsql { ROLLBACK }
116: } {0 {}}
117:
118: set ::zShort [string repeat 0123456789 1]
119: set ::zLong [string repeat 0123456789 1500]
120: set ::rc 1
121: for {set iCache 10} {$::rc} {incr iCache} {
122: execsql "PRAGMA cache_size = $iCache"
123: do_test tkt2409-2.1.$iCache {
124: read_lock_db
125: set ::rc [catch {
126: execsql {
127: BEGIN;
128: INSERT INTO t1 VALUES($::zShort, $::zLong);
129: }
130: } msg]
131: expr {($::rc == 1 && $msg eq "disk I/O error") || $::rc == 0}
132: } {1}
133: }
134:
135: do_test tkt2409-2.2 {
136: catchsql {
137: ROLLBACK;
138: BEGIN;
139: INSERT INTO t1 VALUES($::zShort, $::zLong);
140: COMMIT;
141: }
142: } {1 {database is locked}}
143:
144: do_test tkt2409-2.3 {
145: unread_lock_db
146: catchsql {
147: COMMIT;
148: }
149: } {0 {}}
150:
151:
152: do_test tkt2409-3.1 {
153: db close
154: set ::DB [sqlite3 db test.db; sqlite3_connection_pointer db]
155: sqlite3_extended_result_codes $::DB 1
156: execsql {
157: PRAGMA cache_size=10;
158: DELETE FROM t1;
159: }
160: read_lock_db
161: set ::zShort [string repeat 0123456789 1]
162: set ::zLong [string repeat 0123456789 1500]
163: catchsql {
164: BEGIN;
165: INSERT INTO t1 SELECT $::zShort, $::zLong;
166: }
167: } {0 {}}
168:
169: do_test tkt2409-3.2 {
170: sqlite3_errcode $::DB
171: } {SQLITE_OK}
172:
173: # Check the integrity of the cache.
174: #
175: integrity_check tkt2409-3.3
176:
177: # Check that the transaction was rolled back. Because the INSERT
178: # statement in which the "I/O error" occured did not open a statement
179: # transaction, SQLite had no choice but to roll back the transaction.
180: #
181: do_test tkt2409-3.4 {
182: unread_lock_db
183: catchsql { ROLLBACK }
184: } {0 {}}
185: integrity_check tkt2409-3.5
186:
187: expr {srand(1)}
188: do_test tkt2409-4.1 {
189: execsql {
190: PRAGMA cache_size=20;
191: DROP TABLE t1;
192: CREATE TABLE t1 (x TEXT UNIQUE NOT NULL);
193: }
194:
195: unset -nocomplain t1
196: array unset t1
197: set t1(0) 1
198: set sql ""
199: for {set i 0} {$i<5000} {incr i} {
200: set r 0
201: while {[info exists t1($r)]} {
202: set r [expr {int(rand()*1000000000)}]
203: }
204: set t1($r) 1
205: append sql "INSERT INTO t1 VALUES('some-text-$r');"
206: }
207:
208: read_lock_db
209: execsql BEGIN
210: catchsql $sql
211: } {0 {}}
212:
213: do_test tkt2409-4.2 {
214: sqlite3_errcode $::DB
215: } {SQLITE_OK}
216:
217: # Check the integrity of the cache.
218: #
219: integrity_check tkt2409-4.3
220:
221: do_test tkt2409-4.4 {
222: catchsql { ROLLBACK }
223: } {0 {}}
224: integrity_check tkt2409-4.5
225:
226: unread_lock_db
227: db2 close
228: unset -nocomplain t1
229: finish_test
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