# 2025 September 5
#
# 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 wal_checkpoint = noop" 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 walckptnoop

ifcapable !wal {finish_test ; return }

set VAL 123

proc myrand {} {
  global VAL

  set A 1103515245
  set C 12345
  set M 2147483648

  set VAL [expr {($A * $VAL + $C) % $M}]
  return $VAL
}

proc myrandomblob {n} {
  set l [list]
  for {set i 0} {$i < $n} {incr i} {
    lappend l [expr [myrand] % 256]
  }
  binary format c* $l
}

db func myrandomblob myrandomblob


do_execsql_test 1.0 {
  PRAGMA page_size=1024;
  PRAGMA auto_vacuum=NONE;
  PRAGMA secure_delete=OFF;
  VACUUM;
  CREATE TABLE t1(x INTEGER PRIMARY KEY, y TEXT);
  CREATE INDEX i1 ON t1(y);
  PRAGMA journal_mode = wal;

  WITH s(i) AS (
    SELECT 1 UNION ALL SELECT i+1 FROM s WHERE i<1000
  )
  INSERT INTO t1 SELECT NULL, hex(myrandomblob(64)) FROM s;
} {0 wal}

do_execsql_test 1.1 {
  PRAGMA wal_checkpoint = noop;
} {0 298 0}
do_execsql_test 1.2 {
  PRAGMA wal_checkpoint = noop;
} {0 298 0}
do_execsql_test 1.3 {
  PRAGMA wal_checkpoint = passive;
} {0 298 298}
do_execsql_test 1.4 {
  PRAGMA wal_checkpoint = noop;
} {0 298 298}

db_save_and_close
db_restore_and_reopen
do_execsql_test 1.5 {
  PRAGMA wal_checkpoint = noop;
} {0 298 0}

db close
sqlite3 db test.db
db eval {
  PRAGMA auto_vacuum=NONE;
  PRAGMA secure_delete=OFF;
}
do_execsql_test 1.6 {
  PRAGMA wal_checkpoint = noop;
} {0 0 0}

do_catchsql_test 1.7 {
  BEGIN;
    DELETE FROM t1;
    PRAGMA wal_checkpoint = noop;
} {1 {database table is locked}}

do_catchsql_test 1.8 {
  COMMIT;
  PRAGMA wal_checkpoint = noop;
} {0 {0 5 0}}

do_test 1.9 {
  sqlite3_wal_checkpoint_v2 db noop
} {0 5 0}

do_execsql_test 1.10 {
  PRAGMA journal_mode = delete;
  PRAGMA wal_checkpoint = noop;
} {delete 0 -1 -1}

finish_test