# 2026 July 6
#
# 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.
#

if {![info exists testdir]} {
  set testdir [file join [file dirname [info script]] .. .. test]
} 
source [file join [file dirname [info script]] session_common.tcl]
source $testdir/tester.tcl
ifcapable !session {finish_test; return}

set testprefix sessionrebase2


#-------------------------------------------------------------------------
# Bug https://sqlite.org/bugs/forumpost/70e16d367d
#
set input "54280100000000000000000000000000000000000000000000000000000000000000000000000000000074310017000200000000000000070000000000000000000000000000000000000000000000000000000000000000000000000000000002c14141414141414102c14141414141414102c14141414141414102c14141414141414102c14141414141414102c14141414141414102c14141414141414102c14141414141414102c14141414141414102c14141414141414102c14141414141414102c14141414141414102c14141414141414102c14141414141414102c14141414141414102c14141414141414102c14141414141414102c14141414141414102c14141414141414102c14141414141414102c14141414141414102c14141414141414102c14141414141414102c14141414141414102c14141414141414102c14141414141414102c14141414141414102c14141414141414102c14141414141414102c14141414141414102c14141414141414102c14141414141414102c14141414141414102c14141414141414102c14141414141414102c14141414141414102c14141414141414102c14141414141414102c141414141414141"

set rebaser "5401017431001200020000000000000007"

set I [db one {SELECT unhex($input)}]
set R [db one {SELECT unhex($rebaser)}]
do_test 1.0 {
  sqlite3rebaser_create R
  R configure $R
  set I2 [R rebase $I]
  R delete
} {}

#-------------------------------------------------------------------------
# Ensure that is an error to pass a patchset to sqlite3rebase_configure().
#
set input "0000ff0021"
set rebaser [string map {{ } {}} \
  "5003030000 7400 0921 010000000d00490006"
]

set I [db one {SELECT unhex($input)}]
set R [db one {SELECT unhex($rebaser)}]

do_test 2.0 {
  sqlite3rebaser_create R
  list [catch { R configure $R } msg] $msg
} {1 SQLITE_ERROR}

do_test 2.1 {
  list [catch { set I2 [R rebase $I] } msg] $msg
} {1 SQLITE_CORRUPT}
do_test 2.2 {
  R delete
} {}

#-------------------------------------------------------------------------
#
reset_db

proc get_changeset {sql} {
  execsql BEGIN
  set cs [changeset_from_sql $sql]
  execsql ROLLBACK
  return $cs
}

proc xConflict {args} {
  set res [lindex $::lConflict 0]
  set ::lConflict [lrange $::lConflict 1 end]
  return $res
}


proc rebased {blobs cs} {
  sqlite3rebaser_create R
  foreach b $blobs { R configure $b }
  set out [R rebase $cs]
  R delete
  changeset_to_list $out
}

do_execsql_test 3.0 {
  CREATE TABLE t1(a INTEGER PRIMARY KEY, b);
  INSERT INTO t1 VALUES(1, 'x');
}


set c_peer1 [get_changeset {DELETE FROM t1 WHERE a=1}]
set c_peer2 [get_changeset {UPDATE t1 SET b='peer2' WHERE a=1}]
set c_local [changeset_from_sql {UPDATE t1 SET b='local' WHERE a=1}]

set ::lConflict REPLACE
set b1 [sqlite3changeset_apply_v2 db $c_peer1 xConflict]
set ::lConflict OMIT
set b2 [sqlite3changeset_apply_v2 db $c_peer2 xConflict]

do_test 3.1 { rebased [list $b1] $c_local } {}
do_test 3.2 { rebased [list $b2 $b1] $c_local } {}
do_test 3.3 { rebased [list $b1 $b2] $c_local } {}

finish_test