3 # The author disclaims copyright to this source code. In place of
4 # a legal notice, here is a blessing:
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.
10 #***********************************************************************
13 set testdir [file dirname $argv0]
14 source $testdir/tester.tcl
15 source $testdir/lock_common.tcl
17 set testprefix superlock
22 # 1.*: Test superlock on a rollback database. Test that once the db is
23 # superlocked, it is not possible for a second client to read from
26 # 2.*: Test superlock on a WAL database with zero frames in the WAL file.
27 # Test that once the db is superlocked, it is not possible to read,
28 # write or checkpoint the db.
30 # 3.*: As 2.*, for WAL databases with one or more frames in the WAL.
32 # 4.*: As 2.*, for WAL databases with one or more checkpointed frames
35 # 5.*: Test that a call to sqlite3demo_superlock() uses the busy handler
36 # correctly to wait for existing clients to clear on a WAL database.
37 # And returns SQLITE_BUSY if no busy handler is defined or the busy
38 # handler returns 0 before said clients relinquish their locks.
40 # 6.*: Test that if a superlocked WAL database is overwritten, existing
41 # clients run the recovery to build the new wal-index after the
42 # superlock is released.
47 CREATE TABLE t1(a, b);
48 INSERT INTO t1 VALUES(1, 2);
49 PRAGMA journal_mode = DELETE;
57 do_test 1.2 { sqlite3demo_superlock unlock test.db } {unlock}
58 do_catchsql_test 1.3 { SELECT * FROM t1 } {1 {database is locked}}
59 do_test 1.4 { unlock } {}
62 INSERT INTO t1 VALUES(3, 4);
63 PRAGMA journal_mode = WAL;
66 do_test 2.2 { sqlite3demo_superlock unlock test.db } {unlock}
67 do_catchsql_test 2.3 { SELECT * FROM t1 } {1 {database is locked}}
68 do_catchsql_test 2.4 { INSERT INTO t1 VALUES(5, 6)} {1 {database is locked}}
69 do_catchsql_test 2.5 { PRAGMA wal_checkpoint } {0 {1 -1 -1}}
70 do_test 2.6 { unlock } {}
72 do_execsql_test 3.1 { INSERT INTO t1 VALUES(3, 4) }
74 do_test 3.2 { sqlite3demo_superlock unlock test.db } {unlock}
75 do_catchsql_test 3.3 { SELECT * FROM t1 } {1 {database is locked}}
76 do_catchsql_test 3.4 { INSERT INTO t1 VALUES(5, 6)} {1 {database is locked}}
77 do_catchsql_test 3.5 { PRAGMA wal_checkpoint } {0 {1 -1 -1}}
78 do_test 3.6 { unlock } {}
80 # At this point the WAL file consists of a single frame only - written
81 # by test case 3.1. If the ZERO_DAMAGE flag were not set, it would consist
82 # of two frames - the frame written by 3.1 and a padding frame.
83 do_execsql_test 4.1 { PRAGMA wal_checkpoint } {0 1 1}
85 do_test 4.2 { sqlite3demo_superlock unlock test.db } {unlock}
86 do_catchsql_test 4.3 { SELECT * FROM t1 } {1 {database is locked}}
87 do_catchsql_test 4.4 { INSERT INTO t1 VALUES(5, 6)} {1 {database is locked}}
88 do_catchsql_test 4.5 { PRAGMA wal_checkpoint } {0 {1 -1 -1}}
89 do_test 4.6 { unlock } {}
91 do_multiclient_test tn {
93 proc busyhandler {x} {
102 set ::busylist [list]
106 CREATE TABLE t1(a, b);
107 PRAGMA journal_mode = WAL;
108 INSERT INTO t1 VALUES(1, 2);
113 sql1 { BEGIN ; SELECT * FROM t1 }
114 sql2 { BEGIN ; INSERT INTO t1 VALUES(3, 4) }
115 sql3 { BEGIN ; SELECT * FROM t1 }
119 set ::busylist [list]
120 sqlite3demo_superlock unlock test.db "" busyhandler
124 do_test 5.$tn.4 { csql2 { SELECT * FROM t1 } } {1 {database is locked}}
126 csql3 { INSERT INTO t1 VALUES(5, 6) }
127 } {1 {database is locked}}
128 do_test 5.$tn.6 { csql1 "PRAGMA wal_checkpoint" } {0 {1 -1 -1}}
130 do_test 5.$tn.7 { unlock } {}
134 sql1 { BEGIN ; SELECT * FROM t1 }
135 sql2 { BEGIN ; INSERT INTO t1 VALUES(5, 6) }
136 sql3 { BEGIN ; SELECT * FROM t1 }
140 list [catch {sqlite3demo_superlock unlock test.db} msg] $msg
141 } {1 {database is locked}}
144 list [catch {sqlite3demo_superlock unlock test.db} msg] $msg
145 } {1 {database is locked}}
148 list [catch {sqlite3demo_superlock unlock test.db} msg] $msg
149 } {1 {database is locked}}
152 list [catch {sqlite3demo_superlock unlock test.db} msg] $msg
157 do_test 5.$tn.13 { sql1 { SELECT * FROM t1 } } {1 2 3 4 5 6}
158 do_test 5.$tn.14 { sql2 { SELECT * FROM t1 } } {1 2 3 4 5 6}
159 do_test 5.$tn.15 { sqlite3demo_superlock unlock test.db } {unlock}
160 do_test 5.$tn.16 { unlock } {}
161 do_test 5.$tn.17 { sql2 { SELECT * FROM t1 } } {1 2 3 4 5 6}
162 do_test 5.$tn.18 { sql1 { SELECT * FROM t1 } } {1 2 3 4 5 6}
163 do_test 5.$tn.19 { sql2 { SELECT * FROM t1 } } {1 2 3 4 5 6}
166 proc read_content {file} {
167 if {[file exists $file]==0} {return ""}
169 fconfigure $fd -encoding binary -translation binary
170 set content [read $fd]
175 proc write_content {file content} {
176 set fd [open $file w+]
177 fconfigure $fd -encoding binary -translation binary
178 puts -nonewline $fd $content
182 # Both $file1 and $file2 are database files. This function takes a
183 # superlock on each, then exchanges the content of the two files (i.e.
184 # overwrites $file1 with the initial contents of $file2, and overwrites
185 # $file2 with the initial contents of $file1). The contents of any WAL
186 # file is also exchanged.
188 proc db_swap {file1 file2} {
189 sqlite3demo_superlock unlock1 $file1
190 sqlite3demo_superlock unlock2 $file2
192 set db1 [read_content $file1]
193 set db2 [read_content $file2]
194 write_content $file1 $db2
195 write_content $file2 $db1
197 set wal1 [read_content ${file1}-wal]
198 set wal2 [read_content ${file2}-wal]
199 write_content ${file1}-wal $wal2
200 write_content ${file2}-wal $wal1
208 do_execsql_test 6.1 {
209 ATTACH 'test.db2' AS aux;
210 PRAGMA aux.journal_mode = wal;
211 CREATE TABLE aux.t2(x, y);
212 INSERT INTO aux.t2 VALUES('a', 'b');
213 PRAGMA schema_version = 450;
216 PRAGMA main.journal_mode = wal;
217 CREATE TABLE t1(a, b);
218 INSERT INTO t1 VALUES(1, 2);
219 INSERT INTO t1 VALUES(3, 4);
224 db_swap test.db2 test.db
225 do_catchsql_test 6.2 { SELECT * FROM t1 } {1 {no such table: t1}}
226 do_catchsql_test 6.3 { SELECT * FROM t2 } {0 {a b}}
228 db_swap test.db2 test.db
229 do_catchsql_test 6.4 { SELECT * FROM t1 } {0 {1 2 3 4}}
230 do_catchsql_test 6.5 { SELECT * FROM t2 } {1 {no such table: t2}}
232 do_execsql_test 6.6 { PRAGMA wal_checkpoint } {0 0 0}
234 db_swap test.db2 test.db
235 do_catchsql_test 6.7 { SELECT * FROM t1 } {1 {no such table: t1}}
236 do_catchsql_test 6.8 { SELECT * FROM t2 } {0 {a b}}
238 db_swap test.db2 test.db
239 do_catchsql_test 6.9 { SELECT * FROM t1 } {0 {1 2 3 4}}
240 do_catchsql_test 6.10 { SELECT * FROM t2 } {1 {no such table: t2}}
242 if {[nonzero_reserved_bytes]} {
243 # Vacuum with a size change is not allowed with the codec
244 do_execsql_test 6.11codec {
245 PRAGMA journal_mode = delete;
247 PRAGMA journal_mode = wal;
248 INSERT INTO t1 VALUES(5, 6);
251 do_execsql_test 6.11 {
252 PRAGMA journal_mode = delete;
253 PRAGMA page_size = 512;
255 PRAGMA journal_mode = wal;
256 INSERT INTO t1 VALUES(5, 6);
260 db_swap test.db2 test.db
261 do_catchsql_test 6.12 { SELECT * FROM t1 } {1 {no such table: t1}}
262 do_catchsql_test 6.13 { SELECT * FROM t2 } {0 {a b}}
264 db_swap test.db2 test.db
265 do_catchsql_test 6.14 { SELECT * FROM t1 } {0 {1 2 3 4 5 6}}
266 do_catchsql_test 6.15 { SELECT * FROM t2 } {1 {no such table: t2}}