# 200 July 1
#
# 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 script is attaching many database files to a single
# connection.
#

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

set testprefix attach4

ifcapable !attach {
  finish_test
  return
}

puts "Testing with SQLITE_MAX_ATTACHED=$SQLITE_MAX_ATTACHED"

set files {main test.db}
for {set ii 0} {$ii < $SQLITE_MAX_ATTACHED} {incr ii} {
  lappend files aux$ii "test.db$ii"
}

do_test 1.1 {
  sqlite3_limit db SQLITE_LIMIT_ATTACHED -1
} $SQLITE_MAX_ATTACHED

do_test 1.2.1 {
  db close
  foreach {name f} $files { forcedelete $f }
  sqlite3 db test.db
  
  foreach {name f} $files {
    if {$name == "main"} continue
    execsql "ATTACH '$f' AS $name"
  }

  db eval {PRAGMA database_list} {
    lappend L $name [file tail $file]
  }
  set L
} $files

do_catchsql_test 1.2.2 {
  ATTACH 'x.db' AS next;
} [list 1 "too many attached databases - max $SQLITE_MAX_ATTACHED"]

do_test 1.3 {
  execsql BEGIN;
  foreach {name f} $files {
    execsql "CREATE TABLE $name.tbl(x)"
    execsql "INSERT INTO $name.tbl VALUES('$f')"
  }
  execsql COMMIT;
} {}

do_test 1.4 {
  set L [list]
  foreach {name f} $files {
    lappend L $name [execsql "SELECT x FROM $name.tbl"]
  }
  set L
} $files

set L [list]
set S ""
foreach {name f} $files {
  lappend L wal
  append S "
    PRAGMA $name.journal_mode = WAL;
    UPDATE $name.tbl SET x = '$name';
  "
}
do_execsql_test 1.5 $S $L

do_test 1.6 {
  set L [list]
  foreach {name f} $files {
    lappend L [execsql "SELECT x FROM $name.tbl"] $f
  }
  set L
} $files

do_test 1.7 {
  execsql BEGIN;
  foreach {name f} $files {
    execsql "UPDATE $name.tbl SET x = '$f'"
  }
  execsql COMMIT;
} {}

do_test 1.8 {
  set L [list]
  foreach {name f} $files {
    lappend L $name [execsql "SELECT x FROM $name.tbl"]
  }
  set L
} $files

db close
foreach {name f} $files { forcedelete $f }

finish_test