# 2021 November 06
#
# 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.
#
#***********************************************************************
#

source [file join [file dirname [info script]] rbu_common.tcl]
set ::testprefix rbuexlock

db close
sqlite3_shutdown
sqlite3_config_uri 1

# Create a simple RBU database. That expects to write to a table:
#
#   CREATE TABLE t1(a INTEGER PRIMARY KEY, b, c);
#
proc create_rbu {filename} {
  forcedelete $filename
  sqlite3 rbu1 $filename  
  rbu1 eval {
    CREATE TABLE data_t1(a, b, c, rbu_control);
    INSERT INTO data_t1 VALUES(10, random(), random(), 0);
    INSERT INTO data_t1 VALUES(20, random(), random(), 0);
    INSERT INTO data_t1 VALUES(30, random(), random(), 0);
    INSERT INTO data_t1 VALUES(40, random(), random(), 0);
    INSERT INTO data_t1 VALUES(50, random(), random(), 0);
    INSERT INTO data_t1 VALUES(60, random(), random(), 0);
    INSERT INTO data_t1 VALUES(70, random(), random(), 0);
    INSERT INTO data_t1 VALUES(80, random(), random(), 0);
  }
  rbu1 close
  return $filename
}

reset_db

do_execsql_test 1.0 {
  CREATE TABLE t1(a PRIMARY KEY, b INT, c INT);
  CREATE INDEX t1b ON t1(b);
  CREATE INDEX t1c ON t1(c);
  INSERT INTO t1 VALUES(1, 2, 3);
}
create_rbu rbu1.db

do_test 1.1.0 {
  sqlite3rbu rbu file:test.db?rbu_exclusive_checkpoint=1 rbu1.db
  rbu step
} SQLITE_OK
do_catchsql_test 1.1.1 { SELECT * FROM t1 } {0 {1 2 3}}

do_test 1.2.0 {
  for {set ii 0} {$ii < 10} {incr ii} {
    rbu step
  }
  rbu step
} SQLITE_OK
do_catchsql_test 1.2.1 { SELECT * FROM t1 } {0 {1 2 3}}
do_test 1.2.2 {
  db eval {PRAGMA journal_mode}
} {delete}

do_test 1.3.0 {
  while {[file exists test.db-wal]==0} {
    rbu step
  }
} {}
do_catchsql_test 1.3.1 { SELECT * FROM t1 } {1 {database is locked}}
do_test 1.3.2 {
  db eval {PRAGMA journal_mode}
} {delete}


do_test 1.4.0 {
  rbu step
} SQLITE_OK
do_catchsql_test 1.4.1 { SELECT * FROM t1 } {1 {database is locked}}
do_test 1.4.2 {
  db eval {PRAGMA journal_mode}
} {delete}


rbu close

do_test 1.5.0 {
  file exists test.db-wal
} {1}
do_test 1.5.1 {
  sqlite3rbu rbu file:test.db?rbu_exclusive_checkpoint=1 rbu1.db
  file exists test.db-wal
} 1
do_catchsql_test 1.5.2 { SELECT * FROM t1 } {1 {database is locked}}
do_test 1.5.2 {
  db eval {PRAGMA journal_mode}
} {delete}


do_test 1.6.0 {
  rbu step
} SQLITE_OK
do_catchsql_test 1.6.1 { SELECT * FROM t1 } {1 {database is locked}}
do_test 1.6.2 {
  db eval {PRAGMA journal_mode}
} {delete}

do_test 1.7.0 {
  while {[rbu step]=="SQLITE_OK"} {}
  rbu close
} SQLITE_DONE
do_catchsql_test 1.7.2 { SELECT count(*) FROM t1 } {0 9}
do_test 1.7.2 {
  db eval {PRAGMA journal_mode}
} {delete}

reset_db
do_execsql_test 2.0 {
  CREATE TABLE t1(a PRIMARY KEY, b INT, c INT);
  CREATE INDEX t1b ON t1(b);
  CREATE INDEX t1c ON t1(c);
  INSERT INTO t1 VALUES(1, 2, 3);
}
create_rbu rbu1.db

do_test 2.1.0 {
  sqlite3rbu rbu file:test.db?rbu_exclusive_checkpoint=0 rbu1.db
  rbu step
} SQLITE_OK
do_catchsql_test 2.1.1 { SELECT * FROM t1 } {0 {1 2 3}}

do_test 2.2.0 {
  for {set ii 0} {$ii < 10} {incr ii} {
    rbu step
  }
  rbu step
} SQLITE_OK
do_catchsql_test 2.2.1 { SELECT * FROM t1 } {0 {1 2 3}}

do_test 2.3.0 {
  while {[file exists test.db-wal]==0} {
    rbu step
  }
} {}
do_test 2.3.1 {
  llength [db eval {SELECT * FROM t1}]
} {27}
do_test 2.3.2 {
  db eval {PRAGMA journal_mode}
} {wal}

do_test 2.4.0 {
  rbu step
} SQLITE_OK
do_test 2.4.1 {
  llength [db eval  {SELECT * FROM t1}]
} {27}
do_test 2.4.2 {
  db eval {PRAGMA journal_mode}
} {wal}

rbu close

do_test 2.5.0 {
  db eval {PRAGMA journal_mode}
} {wal}
do_execsql_test 2.5.1 {
  DELETE FROM t1;
} {}

create_rbu rbu1.db
do_test 3.1.0 {
  sqlite3rbu rbu file:test.db?rbu_exclusive_checkpoint=0 rbu1.db
  rbu step
} SQLITE_ERROR

do_test 3.1.1 {
  set rc [catch {rbu close} msg]
  lappend rc $msg
} {1 {SQLITE_ERROR - cannot update wal mode database}}
db eval {PRAGMA journal_mode=DELETE}

create_rbu rbu1.db
do_test 3.2.0 {
  sqlite3rbu rbu file:test.db?rbu_exclusive_checkpoint=0 rbu1.db
  rbu step
} SQLITE_OK

do_test 3.3.1 {
  set rc [catch {rbu close} msg]
  lappend rc $msg
} {0 SQLITE_OK}

db close
create_rbu rbu1.db
do_test 3.4.0 {
  sqlite3rbu rbu file:test.db?rbu_exclusive_checkpoint=0 rbu1.db
  rbu step
} SQLITE_OK
rbu close


finish_test