Add test file e_wal.test.
FossilOrigin-Name: fc6920b5483eeeb06a474ff399a21afa51dc4859
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dan
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C Increase\sthe\sresolution\sof\sthe\ssecond\sparameter\sto\sthe\slikelihood()\sSQL\nfunction\s(the\sprobability\svalue)\sso\sthat\sit\scan\shandle\sprobabilities\nas\ssmall\sas\s0.00000001.\s\sFormerly,\sit\sran\sout\sof\sprecision\sat\s0.001.
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D 2014-10-25T13:42:16.126
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C Add\stest\sfile\se_wal.test.
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D 2014-10-27T11:25:28.528
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F Makefile.arm-wince-mingw32ce-gcc d6df77f1f48d690bd73162294bbba7f59507c72f
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F Makefile.in cf57f673d77606ab0f2d9627ca52a9ba1464146a
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F Makefile.linux-gcc 91d710bdc4998cb015f39edf3cb314ec4f4d7e23
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@ -466,6 +466,7 @@ F test/e_select2.test aceb80ab927d46fba5ce7586ebabf23e2bb0604f
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F test/e_update.test 312cb8f5ccfe41515a6bb092f8ea562a9bd54d52
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F test/e_uri.test 5ae33760fb2039c61aa2d90886f1664664173585
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F test/e_vacuum.test 5bfbdc21b65c0abf24398d0ba31dc88d93ca77a9
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F test/e_wal.test 0967f0b8f1dfda871dc7b9b5574198f1f4f7d69a
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F test/enc.test e54531cd6bf941ee6760be041dff19a104c7acea
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F test/enc2.test 83437a79ba1545a55fb549309175c683fb334473
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F test/enc3.test 90683ad0e6ea587b9d5542ca93568af9a9858c40
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@ -1206,7 +1207,7 @@ F tool/vdbe_profile.tcl 67746953071a9f8f2f668b73fe899074e2c6d8c1
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F tool/warnings-clang.sh f6aa929dc20ef1f856af04a730772f59283631d4
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F tool/warnings.sh 0abfd78ceb09b7f7c27c688c8e3fe93268a13b32
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F tool/win/sqlite.vsix deb315d026cc8400325c5863eef847784a219a2f
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P b9ad601eab1d7298d369267eb697c7fa1bc16985
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R 06fd31d9e4c300e561fccc4cf28a702b
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U drh
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Z 628a0c5751868817bd40f1740c611aef
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P 0f08924fe0c52a85a103f67bee9809e0f8f884b0
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R 770a2e0b8a993a6006545c850fbc4dd8
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U dan
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Z 70c394a419fcdd8591ee5c3f4c5346c4
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@ -1 +1 @@
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0f08924fe0c52a85a103f67bee9809e0f8f884b0
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fc6920b5483eeeb06a474ff399a21afa51dc4859
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229
test/e_wal.test
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test/e_wal.test
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# 2011 May 06
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#
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# The author disclaims copyright to this source code. In place of
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# a legal notice, here is a blessing:
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#
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# May you do good and not evil.
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# May you find forgiveness for yourself and forgive others.
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# May you share freely, never taking more than you give.
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#
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#***********************************************************************
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#
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set testdir [file dirname $argv0]
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source $testdir/tester.tcl
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set testprefix e_wal
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db close
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testvfs oldvfs -iversion 1
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# EVIDENCE-OF: R-58297-14483 WAL databases can be created, read, and
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# written even if shared memory is unavailable as long as the
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# locking_mode is set to EXCLUSIVE before the first attempted access.
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#
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# EVIDENCE-OF: R-00449-33772 This feature allows WAL databases to be
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# created, read, and written by legacy VFSes that lack the "version 2"
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# shared-memory methods xShmMap, xShmLock, xShmBarrier, and xShmUnmap on
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# the sqlite3_io_methods object.
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#
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# 1.1: "create" tests.
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# 1.2: "read" tests.
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# 1.3: "write" tests.
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#
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# All three done with VFS "oldvfs", which has iVersion==1 and so does
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# not support shared memory.
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#
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sqlite3 db test.db -vfs oldvfs
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do_execsql_test 1.1.1 {
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PRAGMA journal_mode = WAL;
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} {delete}
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do_execsql_test 1.1.2 {
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PRAGMA locking_mode = EXCLUSIVE;
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PRAGMA journal_mode = WAL;
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} {exclusive wal}
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do_execsql_test 1.1.3 {
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CREATE TABLE t1(x, y);
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INSERT INTO t1 VALUES(1, 2);
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} {}
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do_test 1.1.4 {
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list [file exists test.db-shm] [file exists test.db-wal]
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} {0 1}
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do_test 1.2.1 {
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db close
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sqlite3 db test.db -vfs oldvfs
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catchsql { SELECT * FROM t1 }
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} {1 {unable to open database file}}
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do_test 1.2.2 {
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execsql { PRAGMA locking_mode = EXCLUSIVE }
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execsql { SELECT * FROM t1 }
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} {1 2}
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do_test 1.2.3 {
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list [file exists test.db-shm] [file exists test.db-wal]
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} {0 1}
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do_test 1.3.1 {
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db close
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sqlite3 db test.db -vfs oldvfs
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catchsql { INSERT INTO t1 VALUES(3, 4) }
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} {1 {unable to open database file}}
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do_test 1.3.2 {
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execsql { PRAGMA locking_mode = EXCLUSIVE }
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execsql { INSERT INTO t1 VALUES(3, 4) }
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execsql { SELECT * FROM t1 }
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} {1 2 3 4}
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do_test 1.3.3 {
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list [file exists test.db-shm] [file exists test.db-wal]
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} {0 1}
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# EVIDENCE-OF: R-31969-57825 If EXCLUSIVE locking mode is set prior to
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# the first WAL-mode database access, then SQLite never attempts to call
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# any of the shared-memory methods and hence no shared-memory wal-index
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# is ever created.
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#
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db close
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sqlite3 db test.db
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do_execsql_test 2.1.1 {
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PRAGMA locking_mode = EXCLUSIVE;
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SELECT * FROM t1;
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} {exclusive 1 2 3 4}
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do_test 2.1.2 {
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list [file exists test.db-shm] [file exists test.db-wal]
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} {0 1}
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# EVIDENCE-OF: R-36328-16367 In that case, the database connection
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# remains in EXCLUSIVE mode as long as the journal mode is WAL; attempts
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# to change the locking mode using "PRAGMA locking_mode=NORMAL;" are
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# no-ops.
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#
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do_execsql_test 2.2.1 {
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PRAGMA locking_mode = NORMAL;
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SELECT * FROM t1;
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} {exclusive 1 2 3 4}
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do_test 2.2.2 {
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sqlite3 db2 test.db
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catchsql {SELECT * FROM t1} db2
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} {1 {database is locked}}
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db2 close
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# EVIDENCE-OF: R-63522-46088 The only way to change out of EXCLUSIVE
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# locking mode is to first change out of WAL journal mode.
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#
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do_execsql_test 2.3.1 {
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PRAGMA journal_mode = DELETE;
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SELECT * FROM t1;
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} {delete 1 2 3 4}
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do_test 2.3.2 {
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sqlite3 db2 test.db
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catchsql {SELECT * FROM t1} db2
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} {1 {database is locked}}
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do_execsql_test 2.3.3 {
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PRAGMA locking_mode = NORMAL;
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SELECT * FROM t1;
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} {normal 1 2 3 4}
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do_test 2.3.4 {
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sqlite3 db2 test.db
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catchsql {SELECT * FROM t1} db2
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} {0 {1 2 3 4}}
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db2 close
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db close
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# EVIDENCE-OF: R-57239-11845 If NORMAL locking mode is in effect for the
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# first WAL-mode database access, then the shared-memory wal-index is
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# created.
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#
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do_test 3.0 {
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sqlite3 db test.db
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execsql { PRAGMA journal_mode = WAL }
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db close
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} {}
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do_test 3.1 {
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sqlite3 db test.db
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execsql { SELECT * FROM t1 }
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list [file exists test.db-shm] [file exists test.db-wal]
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} {1 1}
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# EVIDENCE-OF: R-13779-07711 As long as exactly one connection is using
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# a shared-memory wal-index, the locking mode can be changed freely
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# between NORMAL and EXCLUSIVE.
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#
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do_execsql_test 3.2.1 {
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PRAGMA locking_mode = EXCLUSIVE;
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PRAGMA locking_mode = NORMAL;
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PRAGMA locking_mode = EXCLUSIVE;
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INSERT INTO t1 VALUES(5, 6);
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} {exclusive normal exclusive}
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do_test 3.2.2 {
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sqlite3 db2 test.db
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catchsql { SELECT * FROM t1 } db2
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} {1 {database is locked}}
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# EVIDENCE-OF: R-10993-11647 It is only when the shared-memory wal-index
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# is omitted, when the locking mode is EXCLUSIVE prior to the first
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# WAL-mode database access, that the locking mode is stuck in EXCLUSIVE.
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#
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do_execsql_test 3.2.3 {
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PRAGMA locking_mode = NORMAL;
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SELECT * FROM t1;
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} {normal 1 2 3 4 5 6}
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do_test 3.2.4 {
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catchsql { SELECT * FROM t1 } db2
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} {0 {1 2 3 4 5 6}}
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do_catchsql_test 3.2.5 {
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PRAGMA locking_mode = EXCLUSIVE;
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INSERT INTO t1 VALUES(7, 8);
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} {1 {database is locked}}
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db2 close
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# EVIDENCE-OF: R-46197-42811 This means that the underlying VFS must
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# support the "version 2" shared-memory.
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#
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# EVIDENCE-OF: R-55316-21772 If the VFS does not support shared-memory
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# methods, then the attempt to open a database that is already in WAL
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# mode, or the attempt convert a database into WAL mode, will fail.
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#
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db close
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do_test 3.4.1 {
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sqlite3 db test.db -vfs oldvfs
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catchsql { SELECT * FROM t1 }
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} {1 {unable to open database file}}
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db close
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do_test 3.4.2 {
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forcedelete test.db2
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sqlite3 db test.db2 -vfs oldvfs
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catchsql { PRAGMA journal_mode = WAL }
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} {0 delete}
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db close
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# EVIDENCE-OF: R-22428-28959 To prevent older versions of SQLite from
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# trying to recover a WAL-mode database (and making matters worse) the
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# database file format version numbers (bytes 18 and 19 in the database
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# header) are increased from 1 to 2 in WAL mode.
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#
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reset_db
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do_execsql_test 4.1.1 { CREATE TABLE t1(x, y) }
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do_test 4.1.2 { hexio_read test.db 18 2 } {0101}
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do_execsql_test 4.1.3 { PRAGMA journal_mode = wAL } {wal}
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do_test 4.1.4 { hexio_read test.db 18 2 } {0202}
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# EVIDENCE-OF: R-02535-05811 One can explicitly change out of WAL mode
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# using a pragma such as this: PRAGMA journal_mode=DELETE;
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#
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do_execsql_test 4.2.1 { INSERT INTO t1 VALUES(1, 1); } {}
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do_test 4.2.2 { file exists test.db-wal } {1}
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do_execsql_test 4.2.3 { PRAGMA journal_mode = delete } {delete}
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do_test 4.2.4 { file exists test.db-wal } {0}
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# EVIDENCE-OF: R-60175-02388 Deliberately changing out of WAL mode
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# changes the database file format version numbers back to 1 so that
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# older versions of SQLite can once again access the database file.
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#
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do_test 4.3 { hexio_read test.db 18 2 } {0101}
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finish_test
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