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SQLite training in Houston TX on 2019-11-05 (details)
Part of the 2019 Tcl Conference

Artifact 0b4ec526f9ca4bbabc355042c38045ae2e253fb46eb327bb7693d0122bc6968b:


# 2017 September 19
#
# 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 the operation of the library in
# "PRAGMA journal_mode=WAL2" mode.
#

set testdir [file dirname $argv0]
source $testdir/tester.tcl
source $testdir/lock_common.tcl
source $testdir/malloc_common.tcl
source $testdir/wal_common.tcl

set testprefix wal2big
ifcapable !wal {finish_test ; return }

do_execsql_test 1.0 {
  CREATE TABLE t1(a, b, c);
  CREATE INDEX t1a ON t1(a);
  CREATE INDEX t1b ON t1(b);
  CREATE INDEX t1c ON t1(c);
  PRAGMA journal_mode = wal2;
  PRAGMA journal_size_limit = 10000000;

  WITH s(i) AS (
    SELECT 1 UNION ALL SELECT i+1 FROM s WHERE i<200000
  )
  INSERT INTO t1 SELECT random(), random(), random() FROM s;
} {wal2 10000000}

do_execsql_test 1.1 {
  WITH s(i) AS (
    SELECT 1 UNION ALL SELECT i+1 FROM s WHERE i<200000
  )
  INSERT INTO t1 SELECT random(), random(), random() FROM s;
}

do_test 1.2 {
  list [expr [file size test.db-wal]>10000000] \
       [expr [file size test.db-wal2]>10000000]
} {1 1}

do_test 1.3 {
  sqlite3 db2 test.db
  execsql {
    SELECT count(*) FROM t1;
    PRAGMA integrity_check;
  } db2
} {400000 ok}

do_test 1.4 {
  db2 close
  forcecopy test.db test.db2
  forcecopy test.db-wal test.db2-wal
  forcecopy test.db-wal2 test.db2-wal2
  sqlite3 db2 test.db2
  execsql {
    SELECT count(*) FROM t1;
    PRAGMA integrity_check;
  }
} {400000 ok}

finish_test