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
21 # 1.*: Test superlock on a rollback database. Test that once the db is
22 # superlocked, it is not possible for a second client to read from
25 # 2.*: Test superlock on a WAL database with zero frames in the WAL file.
26 # Test that once the db is superlocked, it is not possible to read,
27 # write or checkpoint the db.
29 # 3.*: As 2.*, for WAL databases with one or more frames in the WAL.
31 # 4.*: As 2.*, for WAL databases with one or more checkpointed frames
34 # 5.*: Test that a call to sqlite3demo_superlock() uses the busy handler
35 # correctly to wait for existing clients to clear on a WAL database.
36 # And returns SQLITE_BUSY if no busy handler is defined or the busy
37 # handler returns 0 before said clients relinquish their locks.
39 # 6.*: Test that if a superlocked WAL database is overwritten, existing
40 # clients run the recovery to build the new wal-index after the
41 # superlock is released.
46 CREATE TABLE t1(a, b);
47 INSERT INTO t1 VALUES(1, 2);
48 PRAGMA journal_mode = DELETE;
51 do_test 1.2 { sqlite3demo_superlock unlock test.db } {unlock}
52 do_catchsql_test 1.3 { SELECT * FROM t1 } {1 {database is locked}}
53 do_test 1.4 { unlock } {}
56 INSERT INTO t1 VALUES(3, 4);
57 PRAGMA journal_mode = WAL;
60 do_test 2.2 { sqlite3demo_superlock unlock test.db } {unlock}
61 do_catchsql_test 2.3 { SELECT * FROM t1 } {1 {database is locked}}
62 do_catchsql_test 2.4 { INSERT INTO t1 VALUES(5, 6)} {1 {database is locked}}
63 do_catchsql_test 2.5 { PRAGMA wal_checkpoint } {0 {1 -1 -1}}
64 do_test 2.6 { unlock } {}
66 do_execsql_test 3.1 { INSERT INTO t1 VALUES(3, 4) }
68 do_test 3.2 { sqlite3demo_superlock unlock test.db } {unlock}
69 do_catchsql_test 3.3 { SELECT * FROM t1 } {1 {database is locked}}
70 do_catchsql_test 3.4 { INSERT INTO t1 VALUES(5, 6)} {1 {database is locked}}
71 do_catchsql_test 3.5 { PRAGMA wal_checkpoint } {0 {1 -1 -1}}
72 do_test 3.6 { unlock } {}
74 do_execsql_test 4.1 { PRAGMA wal_checkpoint } {0 2 2}
76 do_test 4.2 { sqlite3demo_superlock unlock test.db } {unlock}
77 do_catchsql_test 4.3 { SELECT * FROM t1 } {1 {database is locked}}
78 do_catchsql_test 4.4 { INSERT INTO t1 VALUES(5, 6)} {1 {database is locked}}
79 do_catchsql_test 4.5 { PRAGMA wal_checkpoint } {0 {1 -1 -1}}
80 do_test 4.6 { unlock } {}
82 do_multiclient_test tn {
84 proc busyhandler {x} {
97 CREATE TABLE t1(a, b);
98 PRAGMA journal_mode = WAL;
99 INSERT INTO t1 VALUES(1, 2);
104 sql1 { BEGIN ; SELECT * FROM t1 }
105 sql2 { BEGIN ; INSERT INTO t1 VALUES(3, 4) }
106 sql3 { BEGIN ; SELECT * FROM t1 }
110 set ::busylist [list]
111 sqlite3demo_superlock unlock test.db "" busyhandler
115 do_test 5.$tn.4 { csql2 { SELECT * FROM t1 } } {1 {database is locked}}
117 csql3 { INSERT INTO t1 VALUES(5, 6) }
118 } {1 {database is locked}}
119 do_test 5.$tn.6 { csql1 "PRAGMA wal_checkpoint" } {0 {1 -1 -1}}
121 do_test 5.$tn.7 { unlock } {}
125 sql1 { BEGIN ; SELECT * FROM t1 }
126 sql2 { BEGIN ; INSERT INTO t1 VALUES(5, 6) }
127 sql3 { BEGIN ; SELECT * FROM t1 }
131 list [catch {sqlite3demo_superlock unlock test.db} msg] $msg
132 } {1 {database is locked}}
135 list [catch {sqlite3demo_superlock unlock test.db} msg] $msg
136 } {1 {database is locked}}
139 list [catch {sqlite3demo_superlock unlock test.db} msg] $msg
140 } {1 {database is locked}}
143 list [catch {sqlite3demo_superlock unlock test.db} msg] $msg
148 do_test 5.$tn.13 { sql1 { SELECT * FROM t1 } } {1 2 3 4 5 6}
149 do_test 5.$tn.14 { sql2 { SELECT * FROM t1 } } {1 2 3 4 5 6}
150 do_test 5.$tn.15 { sqlite3demo_superlock unlock test.db } {unlock}
151 do_test 5.$tn.16 { unlock } {}
152 do_test 5.$tn.17 { sql2 { SELECT * FROM t1 } } {1 2 3 4 5 6}
153 do_test 5.$tn.18 { sql1 { SELECT * FROM t1 } } {1 2 3 4 5 6}
154 do_test 5.$tn.19 { sql2 { SELECT * FROM t1 } } {1 2 3 4 5 6}
157 proc read_content {file} {
158 if {[file exists $file]==0} {return ""}
160 fconfigure $fd -encoding binary -translation binary
161 set content [read $fd]
166 proc write_content {file content} {
167 set fd [open $file w+]
168 fconfigure $fd -encoding binary -translation binary
169 puts -nonewline $fd $content
173 # Both $file1 and $file2 are database files. This function takes a
174 # superlock on each, then exchanges the content of the two files (i.e.
175 # overwrites $file1 with the initial contents of $file2, and overwrites
176 # $file2 with the initial contents of $file1). The contents of any WAL
177 # file is also exchanged.
179 proc db_swap {file1 file2} {
180 sqlite3demo_superlock unlock1 $file1
181 sqlite3demo_superlock unlock2 $file2
183 set db1 [read_content $file1]
184 set db2 [read_content $file2]
185 write_content $file1 $db2
186 write_content $file2 $db1
188 set wal1 [read_content ${file1}-wal]
189 set wal2 [read_content ${file2}-wal]
190 write_content ${file1}-wal $wal2
191 write_content ${file2}-wal $wal1
199 do_execsql_test 6.1 {
200 ATTACH 'test.db2' AS aux;
201 PRAGMA aux.journal_mode = wal;
202 CREATE TABLE aux.t2(x, y);
203 INSERT INTO aux.t2 VALUES('a', 'b');
204 PRAGMA schema_version = 450;
207 PRAGMA main.journal_mode = wal;
208 CREATE TABLE t1(a, b);
209 INSERT INTO t1 VALUES(1, 2);
210 INSERT INTO t1 VALUES(3, 4);
215 db_swap test.db2 test.db
216 do_catchsql_test 6.2 { SELECT * FROM t1 } {1 {no such table: t1}}
217 do_catchsql_test 6.3 { SELECT * FROM t2 } {0 {a b}}
219 db_swap test.db2 test.db
220 do_catchsql_test 6.4 { SELECT * FROM t1 } {0 {1 2 3 4}}
221 do_catchsql_test 6.5 { SELECT * FROM t2 } {1 {no such table: t2}}
223 do_execsql_test 6.6 { PRAGMA wal_checkpoint } {0 0 0}
225 db_swap test.db2 test.db
226 do_catchsql_test 6.7 { SELECT * FROM t1 } {1 {no such table: t1}}
227 do_catchsql_test 6.8 { SELECT * FROM t2 } {0 {a b}}
229 db_swap test.db2 test.db
230 do_catchsql_test 6.9 { SELECT * FROM t1 } {0 {1 2 3 4}}
231 do_catchsql_test 6.10 { SELECT * FROM t2 } {1 {no such table: t2}}
233 do_execsql_test 6.11 {
234 PRAGMA journal_mode = delete;
235 PRAGMA page_size = 512;
237 PRAGMA journal_mode = wal;
238 INSERT INTO t1 VALUES(5, 6);
241 db_swap test.db2 test.db
242 do_catchsql_test 6.12 { SELECT * FROM t1 } {1 {no such table: t1}}
243 do_catchsql_test 6.13 { SELECT * FROM t2 } {0 {a b}}
245 db_swap test.db2 test.db
246 do_catchsql_test 6.14 { SELECT * FROM t1 } {0 {1 2 3 4 5 6}}
247 do_catchsql_test 6.15 { SELECT * FROM t2 } {1 {no such table: t2}}