# 2017 March 16 # # 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. # # Specificly, it tests that "PRAGMA synchronous" appears to work. # set testdir [file dirname $argv0] source $testdir/tester.tcl set testprefix sync2 # # These tests are only applicable when pager pragma are # enabled. Also, since every test uses an ATTACHed database, they # are only run when ATTACH is enabled. # ifcapable !pager_pragmas||!attach||!dirsync { finish_test return } if {$::tcl_platform(platform)!="unix" || [permutation] == "journaltest" || [permutation] == "inmemory_journal" || [atomic_batch_write test.db] } { finish_test return } proc execsql_sync {sql} { set s $::sqlite_sync_count set res [execsql $sql] concat [expr $::sqlite_sync_count-$s] $res } proc do_execsql_sync_test {tn sql res} { uplevel [list do_test $tn [list execsql_sync $sql] [list {*}$res]] } #----------------------------------------------------------------------- # Tests for journal mode. # sqlite3 db test.db do_execsql_test 1.0 { CREATE TABLE t1(a, b); INSERT INTO t1 VALUES(1, 2); } do_execsql_sync_test 1.1 { INSERT INTO t1 VALUES(3, 4) } 4 # synchronous=normal. So, 1 sync on the directory, 1 on the journal, 1 # on the db file. 3 in total. do_execsql_test 1.2.1 { PRAGMA main.synchronous = NORMAL } do_execsql_test 1.2.2 { PRAGMA main.synchronous } 1 do_execsql_sync_test 1.2.3 { INSERT INTO t1 VALUES(5, 6) } 3 # synchronous=off. No syncs. do_execsql_test 1.3.1 { PRAGMA main.synchronous = OFF } do_execsql_test 1.3.2 { PRAGMA main.synchronous } 0 do_execsql_sync_test 1.3.3 { INSERT INTO t1 VALUES(7, 8) } 0 # synchronous=full, journal_mode=delete. So, 1 sync on the directory, # 2 on the journal, 1 on the db file. 4 in total. do_execsql_test 1.4.1 { PRAGMA main.synchronous = FULL } do_execsql_test 1.4.2 { PRAGMA main.synchronous } 2 do_execsql_sync_test 1.4.3 { INSERT INTO t1 VALUES(9, 10) } 4 #----------------------------------------------------------------------- # Tests for wal mode. # do_execsql_test 1.5 { PRAGMA journal_mode = wal } {wal} # sync=full, journal_mode=wal. One sync on the directory, two on the # wal file. do_execsql_sync_test 1.6 { INSERT INTO t1 VALUES(11, 12) } 3 # One sync on the wal file. do_execsql_sync_test 1.7 { INSERT INTO t1 VALUES(13, 14) } 1 # No syncs. do_execsql_test 1.8.1 { PRAGMA main.synchronous = NORMAL } do_execsql_test 1.8.2 { PRAGMA main.synchronous } 1 do_execsql_sync_test 1.8.3 { INSERT INTO t1 VALUES(15, 16) } 0 # One sync on wal file, one on the db file. do_execsql_sync_test 1.9 { PRAGMA wal_checkpoint } {2 0 3 3} # No syncs. do_execsql_test 1.10.1 { PRAGMA main.synchronous = OFF } do_execsql_test 1.10.2 { PRAGMA main.synchronous } 0 do_execsql_sync_test 1.10.3 { INSERT INTO t1 VALUES(17, 18) } 0 #----------------------------------------------------------------------- # Tests for the compile time settings SQLITE_DEFAULT_SYNCHRONOUS and # SQLITE_DEFAULT_WAL_SYNCHRONOUS. These tests only run if the former # is set to "2" and the latter to "1". This is not the default, but # it is currently the recommended configuration. # # https://sqlite.org/compile.html#recommended_compile_time_options # if {$SQLITE_DEFAULT_SYNCHRONOUS==2 && $SQLITE_DEFAULT_WAL_SYNCHRONOUS==1} { db close sqlite3 db test.db # Wal mode, sync=normal. The first transaction does one sync on directory, # one on the wal file. The second does no syncs. do_execsql_sync_test 1.11.1 { INSERT INTO t1 VALUES(19, 20) } 2 do_execsql_sync_test 1.11.2 { INSERT INTO t1 VALUES(21, 22) } 0 do_execsql_test 1.11.3 { PRAGMA main.synchronous } 1 # One sync on wal file, one on the db file. do_execsql_sync_test 1.12 { PRAGMA wal_checkpoint } {2 0 2 2} # First transaction syncs the wal file once, the second not at all. # one on the wal file. The second does no syncs. do_execsql_sync_test 1.13.1 { INSERT INTO t1 VALUES(22, 23) } 1 do_execsql_sync_test 1.13.2 { INSERT INTO t1 VALUES(24, 25) } 0 do_execsql_test 1.14 { PRAGMA journal_mode = delete } {delete} # Delete mode, sync=full. The first transaction does one sync on # directory, two on the journal file, one on the db. The second does # the same. do_execsql_sync_test 1.15.1 { INSERT INTO t1 VALUES(26, 27) } 4 do_execsql_sync_test 1.15.2 { INSERT INTO t1 VALUES(28, 29) } 4 do_execsql_test 1.15.3 { PRAGMA main.synchronous } 2 # Switch back to wal mode. do_execsql_test 1.16 { PRAGMA journal_mode = wal } {wal} do_execsql_sync_test 1.17.1 { INSERT INTO t1 VALUES(30, 31) } 2 do_execsql_sync_test 1.17.2 { INSERT INTO t1 VALUES(32, 33) } 0 do_execsql_test 1.17.3 { PRAGMA main.synchronous } 1 # Now set synchronous=off, then switch back to delete mode. Check # that the db handle is still using synchronous=off. do_execsql_test 1.18.3 { PRAGMA main.synchronous=off } do_execsql_test 1.18 { PRAGMA journal_mode = delete } {delete} do_execsql_sync_test 1.19.1 { INSERT INTO t1 VALUES(34, 35) } 0 do_execsql_sync_test 1.19.2 { INSERT INTO t1 VALUES(36, 37) } 0 do_execsql_test 1.19.3 { PRAGMA main.synchronous } 0 # Close and reopen the db. Back to synchronous=normal. db close sqlite3 db test.db do_execsql_sync_test 1.20.1 { INSERT INTO t1 VALUES(38, 39) } 4 do_execsql_sync_test 1.20.2 { INSERT INTO t1 VALUES(40, 41) } 4 do_execsql_test 1.20.3 { PRAGMA main.synchronous } 2 } finish_test