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Diffstat (limited to '')
| -rw-r--r-- | test/walnoshm.test | 184 |
1 files changed, 184 insertions, 0 deletions
diff --git a/test/walnoshm.test b/test/walnoshm.test new file mode 100644 index 0000000..d408217 --- /dev/null +++ b/test/walnoshm.test @@ -0,0 +1,184 @@ +# 2010 November 1 +# +# The author disclaims copyright to this source code. In place of +# a legal notice, here is a blessing: +# +# May you do good and not evil. +# May you find forgiveness for yourself and forgive others. +# May you share freely, never taking more than you give. +# +#*********************************************************************** +# This file implements regression tests for SQLite library. The +# focus of this file is testing that WAL databases may be accessed without +# using the xShm primitives if the connection is in exclusive-mode. +# + +set testdir [file dirname $argv0] +source $testdir/tester.tcl +set testprefix walnoshm +ifcapable !wal {finish_test ; return } + +db close +testvfs tvfsshm +testvfs tvfs -default 1 -iversion 1 +sqlite3 db test.db + +#-------------------------------------------------------------------------- +# Test that when using a version 1 VFS, a database can only be converted +# to WAL mode after setting locking_mode=EXCLUSIVE. Also, test that if a +# WAL database is opened using heap-memory for the WAL index, the connection +# cannot change back to locking_mode=NORMAL while the database is still in +# WAL mode. +# +do_execsql_test 1.1 { + CREATE TABLE t1(x, y); + INSERT INTO t1 VALUES(1, 2); +} + +do_execsql_test 1.2 { + PRAGMA journal_mode = WAL; + SELECT * FROM t1; +} {delete 1 2} +do_test 1.3 { file exists test.db-wal } {0} + +do_execsql_test 1.4 { + PRAGMA locking_mode = exclusive; + PRAGMA journal_mode = WAL; + SELECT * FROM t1; +} {exclusive wal 1 2} +do_test 1.5 { file exists test.db-wal } {1} + +do_execsql_test 1.6 { INSERT INTO t1 VALUES(3, 4) } + +do_execsql_test 1.7 { + PRAGMA locking_mode = normal; +} {exclusive} +do_execsql_test 1.8 { + PRAGMA journal_mode = delete; + PRAGMA main.locking_mode; +} {delete exclusive} +do_execsql_test 1.9 { + PRAGMA locking_mode = normal; +} {normal} +do_execsql_test 1.10 { + SELECT * FROM t1; +} {1 2 3 4} +do_test 1.11 { file exists test.db-wal } {0} + +#------------------------------------------------------------------------- +# +# 2.1.*: Test that a connection using a version 1 VFS can open a WAL database +# and convert it to rollback mode if it is set to use +# locking_mode=exclusive. +# +# 2.2.*: Test that if the exclusive lock cannot be obtained while attempting +# the above, the operation fails and the WAL file is not opened. +# +do_execsql_test 2.1.1 { + CREATE TABLE t2(x, y); + INSERT INTO t2 VALUES('a', 'b'); + INSERT INTO t2 VALUES('c', 'd'); +} +do_execsql_test 2.1.2 { + PRAGMA locking_mode = exclusive; + PRAGMA journal_mode = WAL; + INSERT INTO t2 VALUES('e', 'f'); + INSERT INTO t2 VALUES('g', 'h'); +} {exclusive wal} + +do_test 2.1.3 { + forcecopy test.db test2.db + forcecopy test.db-wal test2.db-wal + sqlite3 db2 test2.db + catchsql { SELECT * FROM t2 } db2 +} {1 {unable to open database file}} +do_test 2.1.4 { + catchsql { PRAGMA journal_mode = delete } db2 +} {1 {unable to open database file}} +do_test 2.1.5 { + execsql { + PRAGMA locking_mode = exclusive; + PRAGMA journal_mode = delete; + SELECT * FROM t2; + } db2 +} {exclusive delete a b c d e f g h} + +do_test 2.2.1 { + forcecopy test.db test2.db + forcecopy test.db-wal test2.db-wal + sqlite3 db3 test2.db -vfs tvfsshm + sqlite3 db2 test2.db + execsql { SELECT * FROM t2 } db3 +} {a b c d e f g h} + +do_test 2.2.2 { + execsql { PRAGMA locking_mode = exclusive } db2 + catchsql { PRAGMA journal_mode = delete } db2 +} {1 {database is locked}} + +do_test 2.2.3 { + # This is to test that [db2] is not holding a PENDING lock (which can + # happen when an attempt to obtain an EXCLUSIVE lock fails). + sqlite3 db4 test2.db -vfs tvfsshm + execsql { SELECT * FROM t2 } db4 +} {a b c d e f g h} + +do_test 2.2.4 { + catchsql { SELECT * FROM t2 } db2 +} {1 {database is locked}} + +do_test 2.2.5 { + db4 close + sqlite3 db4 test2.db -vfs tvfsshm + execsql { SELECT * FROM t2 } db4 +} {a b c d e f g h} + +do_test 2.2.6 { + db3 close + db4 close + execsql { SELECT * FROM t2 } db2 +} {a b c d e f g h} + +db2 close +db close + +#------------------------------------------------------------------------- +# +# 3.1: Test that if locking_mode=EXCLUSIVE is set after the wal file is +# opened, it is possible to drop back to locking_mode=NORMAL. +# +# 3.2: Test that if locking_mode=EXCLUSIVE is set before the wal file is +# opened, it is not. +# +do_test 3.1 { + sqlite3 db test.db -vfs tvfsshm + execsql { + SELECT * FROM t1; + PRAGMA locking_mode = EXCLUSIVE; + INSERT INTO t1 VALUES(5, 6); + PRAGMA locking_mode = NORMAL; + INSERT INTO t1 VALUES(7, 8); + } + sqlite3 db2 test.db -vfs tvfsshm + execsql { SELECT * FROM t1 } db2 +} {1 2 3 4 5 6 7 8} +db close +db2 close +do_test 3.2 { + sqlite3 db test.db -vfs tvfsshm + execsql { + PRAGMA locking_mode = EXCLUSIVE; + INSERT INTO t1 VALUES(9, 10); + PRAGMA locking_mode = NORMAL; + INSERT INTO t1 VALUES(11, 12); + } + sqlite3 db2 test.db -vfs tvfsshm + catchsql { SELECT * FROM t1 } db2 +} {1 {database is locked}} +db close +db2 close + +tvfs delete +tvfsshm delete + +finish_test |