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# 2010 September 22
#
# 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 contains tests for the r-tree module. Specifically, it tests
# that corrupt or inconsistent databases do not cause crashes in the r-tree
# module.
#
if {![info exists testdir]} {
set testdir [file join [file dirname [info script]] .. .. test]
}
source $testdir/tester.tcl
ifcapable !rtree { finish_test ; return }
proc create_t1 {} {
db close
forcedelete test.db
sqlite3 db test.db
execsql {
PRAGMA page_size = 1024;
CREATE VIRTUAL TABLE t1 USING rtree(id, x1, x2, y1, y2);
}
}
proc populate_t1 {} {
execsql BEGIN
for {set i 0} {$i < 500} {incr i} {
set x2 [expr $i+5]
set y2 [expr $i+5]
execsql { INSERT INTO t1 VALUES($i, $i, $x2, $i, $y2) }
}
execsql COMMIT
}
proc truncate_node {nodeno nTrunc} {
set blob [db one {SELECT data FROM t1_node WHERE nodeno=$nodeno}]
if {$nTrunc<0} {set nTrunc "end-$nTrunc"}
set blob [string range $blob 0 $nTrunc]
db eval { UPDATE t1_node SET data = $blob WHERE nodeno=$nodeno }
}
proc set_tree_depth {tbl {newvalue ""}} {
set blob [db one "SELECT data FROM ${tbl}_node WHERE nodeno=1"]
if {$newvalue == ""} {
binary scan $blob Su oldvalue
return $oldvalue
}
set blob [binary format Sua* $newvalue [string range $blob 2 end]]
db eval "UPDATE ${tbl}_node SET data = \$blob WHERE nodeno=1"
return [set_tree_depth $tbl]
}
proc set_entry_count {tbl nodeno {newvalue ""}} {
set blob [db one "SELECT data FROM ${tbl}_node WHERE nodeno=$nodeno"]
if {$newvalue == ""} {
binary scan [string range $blob 2 end] Su oldvalue
return $oldvalue
}
set blob [binary format a*Sua* \
[string range $blob 0 1] $newvalue [string range $blob 4 end]
]
db eval "UPDATE ${tbl}_node SET data = \$blob WHERE nodeno=$nodeno"
return [set_entry_count $tbl $nodeno]
}
proc do_corruption_tests {prefix args} {
set testarray [lindex $args end]
set errormsg {database disk image is malformed}
foreach {z value} [lrange $args 0 end-1] {
set n [string length $z]
if {$n>=2 && [string equal -length $n $z "-error"]} {
set errormsg $value
}
}
foreach {tn sql} $testarray {
do_catchsql_test $prefix.$tn $sql [list 1 $errormsg]
}
}
#-------------------------------------------------------------------------
# Test the libraries response if the %_node table is completely empty
# (i.e. the root node is missing), or has been removed from the database
# entirely.
#
create_t1
populate_t1
do_execsql_test rtreeA-1.0 {
DELETE FROM t1_node;
} {}
do_corruption_tests rtreeA-1.1 {
1 "SELECT * FROM t1"
2 "SELECT * FROM t1 WHERE rowid=5"
3 "INSERT INTO t1 VALUES(1000, 1, 2, 3, 4)"
4 "SELECT * FROM t1 WHERE x1<10 AND x2>12"
}
do_execsql_test rtreeA-1.2.0 { DROP TABLE t1_node } {}
do_corruption_tests rtreeA-1.2 -error "SQL logic error or missing database" {
1 "SELECT * FROM t1"
2 "SELECT * FROM t1 WHERE rowid=5"
3 "INSERT INTO t1 VALUES(1000, 1, 2, 3, 4)"
4 "SELECT * FROM t1 WHERE x1<10 AND x2>12"
}
#-------------------------------------------------------------------------
# Test the libraries response if some of the entries in the %_node table
# are the wrong size.
#
create_t1
populate_t1
do_test rtreeA-2.1.0 {
set nodes [db eval {select nodeno FROM t1_node}]
foreach {a b c} $nodes { truncate_node $c 200 }
} {}
do_corruption_tests rtreeA-2.1 {
1 "SELECT * FROM t1"
2 "SELECT * FROM t1 WHERE rowid=5"
3 "INSERT INTO t1 VALUES(1000, 1, 2, 3, 4)"
4 "SELECT * FROM t1 WHERE x1<10 AND x2>12"
}
create_t1
populate_t1
do_test rtreeA-2.2.0 { truncate_node 1 200 } {}
do_corruption_tests rtreeA-2.2 {
1 "SELECT * FROM t1"
2 "SELECT * FROM t1 WHERE rowid=5"
3 "INSERT INTO t1 VALUES(1000, 1, 2, 3, 4)"
4 "SELECT * FROM t1 WHERE x1<10 AND x2>12"
}
#-------------------------------------------------------------------------
# Set the "depth" of the tree stored on the root node incorrectly. Test
# that this does not cause any problems.
#
create_t1
populate_t1
do_test rtreeA-3.1.0.1 { set_tree_depth t1 } {1}
do_test rtreeA-3.1.0.2 { set_tree_depth t1 3 } {3}
do_corruption_tests rtreeA-3.1 {
1 "SELECT * FROM t1"
2 "SELECT * FROM t1 WHERE rowid=5"
3 "INSERT INTO t1 VALUES(1000, 1, 2, 3, 4)"
}
do_test rtreeA-3.2.0 { set_tree_depth t1 1000 } {1000}
do_corruption_tests rtreeA-3.2 {
1 "SELECT * FROM t1"
2 "SELECT * FROM t1 WHERE rowid=5"
3 "INSERT INTO t1 VALUES(1000, 1, 2, 3, 4)"
}
create_t1
populate_t1
do_test rtreeA-3.3.0 {
execsql { DELETE FROM t1 WHERE rowid = 0 }
set_tree_depth t1 65535
} {65535}
do_corruption_tests rtreeA-3.3 {
1 "SELECT * FROM t1"
2 "SELECT * FROM t1 WHERE rowid=5"
3 "INSERT INTO t1 VALUES(1000, 1, 2, 3, 4)"
}
#-------------------------------------------------------------------------
# Set the "number of entries" field on some nodes incorrectly.
#
create_t1
populate_t1
do_test rtreeA-4.1.0 {
set_entry_count t1 1 4000
} {4000}
do_corruption_tests rtreeA-4.1 {
1 "SELECT * FROM t1"
2 "SELECT * FROM t1 WHERE rowid=5"
3 "INSERT INTO t1 VALUES(1000, 1, 2, 3, 4)"
4 "SELECT * FROM t1 WHERE x1<10 AND x2>12"
}
#-------------------------------------------------------------------------
# Remove entries from the %_parent table and check that this does not
# cause a crash.
#
create_t1
populate_t1
do_execsql_test rtreeA-5.1.0 { DELETE FROM t1_parent } {}
do_corruption_tests rtreeA-5.1 {
1 "DELETE FROM t1 WHERE rowid = 5"
2 "DELETE FROM t1"
}
#-------------------------------------------------------------------------
# Add some bad entries to the %_parent table.
#
create_t1
populate_t1
do_execsql_test rtreeA-6.1.0 {
UPDATE t1_parent set parentnode = parentnode+1
} {}
do_corruption_tests rtreeA-6.1 {
1 "DELETE FROM t1 WHERE rowid = 5"
2 "UPDATE t1 SET x1=x1+1, x2=x2+1"
}
finish_test
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