# 2017 August 17
#
# 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.
#
#***********************************************************************
#
#


if {![info exists testdir]} {
  set testdir [file join [file dirname [info script]] .. .. test]
} 
source $testdir/tester.tcl
set testprefix rtreecheck

ifcapable !rtree {
  finish_test
  return
}

proc swap_int32 {blob i0 i1} {
  binary scan $blob I* L

  set a [lindex $L $i0]
  set b [lindex $L $i1]

  lset L $i0 $b
  lset L $i1 $a

  binary format I* $L
}

proc set_int32 {blob idx val} {
  binary scan $blob I* L
  lset L $idx $val
  binary format I* $L
}

do_catchsql_test 1.0 {
  SELECT rtreecheck();
} {1 {wrong number of arguments to function rtreecheck()}}

do_catchsql_test 1.1 {
  SELECT rtreecheck(0,0,0);
} {1 {wrong number of arguments to function rtreecheck()}}


proc setup_simple_db {{module rtree}} {
  reset_db
  db func swap_int32 swap_int32
  execsql "
    CREATE VIRTUAL TABLE r1 USING $module (id, x1, x2, y1, y2);
    INSERT INTO r1 VALUES(1,  5, 5, 5, 5);  --  3
    INSERT INTO r1 VALUES(2,  6, 6, 6, 6);  --  9
    INSERT INTO r1 VALUES(3,  7, 7, 7, 7);  -- 15
    INSERT INTO r1 VALUES(4,  8, 8, 8, 8);  -- 21
    INSERT INTO r1 VALUES(5,  9, 9, 9, 9);  -- 27
  "
}

setup_simple_db
do_execsql_test 2.1 { 
  SELECT rtreecheck('r1') 
} {ok}

do_execsql_test 2.2 {
  UPDATE r1_node SET data = swap_int32(data, 3, 9);
  UPDATE r1_node SET data = swap_int32(data, 23, 29);
}

do_execsql_test 2.3 { 
  SELECT rtreecheck('r1') 
} {{Dimension 0 of cell 0 on node 1 is corrupt
Dimension 1 of cell 3 on node 1 is corrupt}}

setup_simple_db
do_execsql_test 2.4 {
  DELETE FROM r1_rowid WHERE rowid = 3;
  SELECT rtreecheck('r1') 
} {{Mapping (3 -> 1) missing from %_rowid table
Wrong number of entries in %_rowid table - expected 5, actual 4}}

setup_simple_db
do_execsql_test 2.5 {
  UPDATE r1_rowid SET nodeno=2 WHERE rowid=3;
  SELECT rtreecheck('r1') 
} {{Found (3 -> 2) in %_rowid table, expected (3 -> 1)}}

reset_db
do_execsql_test 3.0 { 
  CREATE VIRTUAL TABLE r1 USING rtree_i32(id, x1, x2);
  INSERT INTO r1 VALUES(1, 0x7FFFFFFF*-1, 0x7FFFFFFF);
  INSERT INTO r1 VALUES(2, 0x7FFFFFFF*-1, 5);
  INSERT INTO r1 VALUES(3, -5, 5);
  INSERT INTO r1 VALUES(4, 5, 0x11111111);
  INSERT INTO r1 VALUES(5, 5, 0x00800000);
  INSERT INTO r1 VALUES(6, 5, 0x00008000);
  INSERT INTO r1 VALUES(7, 5, 0x00000080);
  INSERT INTO r1 VALUES(8, 5, 0x40490fdb);
  INSERT INTO r1 VALUES(9, 0x7f800000, 0x7f900000);
  SELECT rtreecheck('r1') 
} {ok}

do_execsql_test 3.1 { 
  CREATE VIRTUAL TABLE r2 USING rtree_i32(id, x1, x2);
  INSERT INTO r2 VALUES(2, -1*(1<<31), -1*(1<<31)+5);
  SELECT rtreecheck('r2') 
} {ok}

do_execsql_test 3.2 {
  BEGIN;
    UPDATE r2_node SET data = X'123456';
    SELECT rtreecheck('r2')!="ok";
} {1}

do_execsql_test 3.3 {
  ROLLBACK;
  UPDATE r2_node SET data = X'00001234';
  SELECT rtreecheck('r2')!="ok";
} {1}

do_execsql_test 4.0 {
  CREATE TABLE notanrtree(i);
  SELECT rtreecheck('notanrtree');
} {{Schema corrupt or not an rtree}}

#-------------------------------------------------------------------------
#
reset_db
db func set_int32 set_int32
do_execsql_test 5.0 {
  CREATE VIRTUAL TABLE r3 USING rtree_i32(id, x1, x2, y1, y2);
  WITH x(i) AS (
    SELECT 1 UNION ALL SELECT i+1 FROM x WHERE i<1000
  )
  INSERT INTO r3 SELECT i, i, i, i, i FROM x;
}
do_execsql_test 5.1 {
  BEGIN;
    UPDATE r3_node SET data = set_int32(data, 3, 5000);
    UPDATE r3_node SET data = set_int32(data, 4, 5000);
    SELECT rtreecheck('r3')=='ok'
} 0
do_execsql_test 5.2 {
  ROLLBACK;
  BEGIN;
    UPDATE r3_node SET data = set_int32(data, 3, 0);
    UPDATE r3_node SET data = set_int32(data, 4, 0);
    SELECT rtreecheck('r3')=='ok'
} 0

finish_test