# 2015年07月31日
#
# 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.
#
#***********************************************************************
#
# Tests for the [sqldiff --changeset] command.
#
#
if {![info exists testdir]} {
 set testdir [file join [file dirname [info script]] .. .. test]
}
source $testdir/tester.tcl
ifcapable !session {finish_test; return}
set testprefix sessiondiff

set PROG [test_find_sqldiff]
db close

proc sqlesc {id} {
 set ret "'[string map {' ''} $id]'"
 set ret
}

proc database_cksum {db1} {
 set txt ""

 sqlite3 dbtmp $db1
 foreach tbl [dbtmp eval {SELECT name FROM sqlite_master WHERE type='table'}] {
 set cols [list]
 dbtmp eval "PRAGMA table_info = [sqlesc $tbl]" { 
 lappend cols "quote( $name )" 
 }
 append txt [dbtmp eval \
 "SELECT [join $cols{||'.'||}] FROM [sqlesc $tbl] ORDER BY 1"
 ]
 }
 dbtmp close

 md5 $txt
}

proc readfile {filename} {
 set fd [open $filename]
 fconfigure $fd -translation binary -encoding binary
 set data [read $fd]
 close $fd
 set data
}

proc get_changeset {db1 db2} {
 exec $::PROG --changeset changeset.bin $db1 $db2
 set bin [readfile changeset.bin]
 return $bin
}

proc xConflict {args} { 
 return "" 
}

proc do_changeset_test {tn sql1 sql2} {
 forcedelete test.db123 test.db124 

 sqlite3 db test.db123
 db eval $sql1
 db close

 sqlite3 db test.db124
 db eval $sql2

 set cs [get_changeset test.db124 test.db123]
 sqlite3changeset_apply db $cs xConflict
 db close

 set database_cksum1 [database_cksum test.db123]
 set database_cksum2 [database_cksum test.db124]

 uplevel [list \
 do_test $tn [list string compare $database_cksum1 $database_cksum2] 0
 ]
}

do_changeset_test 1.0 {
 CREATE TABLE t1(x PRIMARY KEY);
} {
 CREATE TABLE t1(x PRIMARY KEY);
}

do_changeset_test 1.1 {
 CREATE TABLE t1(x PRIMARY KEY);
 CREATE TABLE t2(x PRIMARY KEY, y);
 INSERT INTO t2 VALUES(1, 2);
} {
 CREATE TABLE t1(x PRIMARY KEY);
 CREATE TABLE t2(x PRIMARY KEY, y);
 INSERT INTO t2 VALUES(3, 4);
}

do_changeset_test 1.2 {
 CREATE TABLE t2(a, b, c, PRIMARY KEY(b, c));
 INSERT INTO t2 VALUES(1, 2, 3);
 INSERT INTO t2 VALUES(4, 5, 6);
} {
 CREATE TABLE t2(a, b, c, PRIMARY KEY(b, c));
 INSERT INTO t2 VALUES(1, 2, 11);
 INSERT INTO t2 VALUES(7, 8, 9);
}

finish_test