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libsql/libsql-sqlite3/ext/session/sessionfault.test
2023-10-16 13:58:16 +02:00

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# 2011 Mar 21
#
# 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.
#
#***********************************************************************
#
# The focus of this file is testing the session module.
#
if {![info exists testdir]} {
set testdir [file join [file dirname [info script]] .. .. test]
}
source [file join [file dirname [info script]] session_common.tcl]
source $testdir/tester.tcl
ifcapable !session {finish_test; return}
set testprefix sessionfault
forcedelete test.db2
sqlite3 db2 test.db2
do_common_sql {
CREATE TABLE t1(a, b, c, PRIMARY KEY(a, b));
INSERT INTO t1 VALUES(1, 2, 3);
INSERT INTO t1 VALUES(4, 5, 6);
}
faultsim_save_and_close
db2 close
#-------------------------------------------------------------------------
# Test OOM error handling when collecting and applying a simple changeset.
#
# Test 1.1 attaches tables individually by name to the session object.
# Whereas test 1.2 passes NULL to sqlite3session_attach() to attach all
# tables.
#
do_faultsim_test 1.1 -faults oom-* -prep {
catch {db2 close}
catch {db close}
faultsim_restore_and_reopen
sqlite3 db2 test.db2
} -body {
do_then_apply_sql -ignorenoop {
INSERT INTO t1 VALUES('a string value', 8, 9);
UPDATE t1 SET c = 10 WHERE a = 1;
DELETE FROM t1 WHERE a = 4;
}
} -test {
faultsim_test_result {0 {}} {1 SQLITE_NOMEM}
faultsim_integrity_check
if {$testrc==0} { compare_db db db2 }
}
do_faultsim_test 1.2 -faults oom-* -prep {
catch {db2 close}
catch {db close}
faultsim_restore_and_reopen
} -body {
sqlite3session S db main
S attach *
execsql {
INSERT INTO t1 VALUES('a string value', 8, 9);
UPDATE t1 SET c = 10 WHERE a = 1;
DELETE FROM t1 WHERE a = 4;
}
set ::changeset [S changeset]
set {} {}
} -test {
catch { S delete }
faultsim_test_result {0 {}} {1 SQLITE_NOMEM}
faultsim_integrity_check
if {$testrc==0} {
proc xConflict {args} { return "OMIT" }
sqlite3 db2 test.db2
sqlite3changeset_apply db2 $::changeset xConflict
compare_db db db2
}
}
#-------------------------------------------------------------------------
# The following block of tests - 2.* - are designed to check
# the handling of faults in the sqlite3changeset_apply() function.
#
catch {db close}
catch {db2 close}
forcedelete test.db2 test.db
sqlite3 db2 test.db2
sqlite3 db test.db
do_common_sql {
CREATE TABLE t1(a, b, c, PRIMARY KEY(a, b));
INSERT INTO t1 VALUES('apple', 'orange', 'pear');
CREATE TABLE t2(x PRIMARY KEY, y);
}
db2 close
faultsim_save_and_close
foreach {tn conflict_policy sql sql2} {
1 OMIT { INSERT INTO t1 VALUES('one text', 'two text', X'00ff00') } {}
2 OMIT { DELETE FROM t1 WHERE a = 'apple' } {}
3 OMIT { UPDATE t1 SET c = 'banana' WHERE b = 'orange' } {}
4 REPLACE { INSERT INTO t2 VALUES('keyvalue', 'value 1') } {
INSERT INTO t2 VALUES('keyvalue', 'value 2');
}
} {
proc xConflict args [list return $conflict_policy]
do_faultsim_test 2.$tn -faults oom-transient -prep {
catch {db2 close}
catch {db close}
faultsim_restore_and_reopen
set ::changeset [changeset_from_sql $::sql]
sqlite3 db2 test.db2
sqlite3_db_config_lookaside db2 0 0 0
execsql $::sql2 db2
} -body {
sqlite3changeset_apply db2 $::changeset xConflict
} -test {
faultsim_test_result {0 {}} {1 SQLITE_NOMEM}
faultsim_integrity_check
if {$testrc==0} { compare_db db db2 }
}
}
#-------------------------------------------------------------------------
# This test case is designed so that a malloc() failure occurs while
# resizing the session object hash-table from 256 to 512 buckets. This
# is not an error, just a sub-optimal condition.
#
do_faultsim_test 3 -faults oom-* -prep {
catch {db2 close}
catch {db close}
faultsim_restore_and_reopen
sqlite3 db2 test.db2
sqlite3session S db main
S attach t1
execsql { BEGIN }
for {set i 0} {$i < 125} {incr i} {
execsql {INSERT INTO t1 VALUES(10+$i, 10+$i, 10+$i)}
}
} -body {
for {set i 125} {$i < 133} {incr i} {
execsql {INSERT INTO t1 VALUES(10+$i, 10+$i, 1-+$i)}
}
S changeset
set {} {}
} -test {
faultsim_test_result {0 {}} {1 SQLITE_NOMEM}
if {$testrc==0} {
sqlite3changeset_apply db2 [S changeset] xConflict
compare_db db db2
}
catch { S delete }
faultsim_integrity_check
}
catch { db close }
catch { db2 close }
forcedelete test.db2 test.db
sqlite3 db2 test.db2
sqlite3 db test.db
proc xConflict {op tbl type args} {
if { $type=="CONFLICT" || $type=="DATA" } {
return "REPLACE"
}
return "OMIT"
}
do_test 4.0 {
execsql {
PRAGMA encoding = 'utf16';
CREATE TABLE t1(a PRIMARY KEY, b);
INSERT INTO t1 VALUES(5, 32);
}
execsql {
PRAGMA encoding = 'utf16';
CREATE TABLE t1(a PRIMARY KEY, b NOT NULL);
INSERT INTO t1 VALUES(1, 2);
INSERT INTO t1 VALUES(2, 4);
INSERT INTO t1 VALUES(4, 16);
} db2
} {}
faultsim_save_and_close
db2 close
do_faultsim_test 4 -faults oom-* -prep {
catch {db2 close}
catch {db close}
faultsim_restore_and_reopen
sqlite3 db2 test.db2
sqlite3session S db main
S attach t1
execsql {
INSERT INTO t1 VALUES(1, 45);
INSERT INTO t1 VALUES(2, 55);
INSERT INTO t1 VALUES(3, 55);
UPDATE t1 SET a = 4 WHERE a = 5;
}
} -body {
sqlite3changeset_apply db2 [S changeset] xConflict
} -test {
catch { S delete }
faultsim_test_result {0 {}} {1 SQLITE_NOMEM}
if {$testrc==0} { compare_db db db2 }
}
#-------------------------------------------------------------------------
# This block of tests verifies that OOM faults in the
# sqlite3changeset_invert() function are handled correctly.
#
catch {db close}
catch {db2 close}
forcedelete test.db
sqlite3 db test.db
execsql {
CREATE TABLE t1(a, b, PRIMARY KEY(b));
CREATE TABLE t2(a PRIMARY KEY, b);
INSERT INTO t1 VALUES('string', 1);
INSERT INTO t1 VALUES(4, 2);
INSERT INTO t1 VALUES(X'FFAAFFAAFFAA', 3);
}
set changeset [changeset_from_sql {
INSERT INTO t1 VALUES('xxx', 'yyy');
DELETE FROM t1 WHERE a = 'string';
UPDATE t1 SET a = 20 WHERE b = 2;
}]
db close
do_faultsim_test 5.1 -faults oom* -body {
set ::inverse [sqlite3changeset_invert $::changeset]
set {} {}
} -test {
faultsim_test_result {0 {}} {1 SQLITE_NOMEM}
if {$testrc==0} {
set x [list]
sqlite3session_foreach c $::inverse { lappend x $c }
foreach c {
{DELETE t1 0 .X {t xxx t yyy} {}}
{INSERT t1 0 .X {} {t string i 1}}
{UPDATE t1 0 .X {i 20 i 2} {i 4 {} {}}}
} { lappend y $c }
if {$x != $y} { error "changeset no good" }
}
}
catch {db close}
catch {db2 close}
forcedelete test.db
sqlite3 db test.db
execsql {
CREATE TABLE t2(a PRIMARY KEY, b);
INSERT INTO t2 VALUES(1, 'abc');
INSERT INTO t2 VALUES(2, 'def');
}
set changeset [changeset_from_sql {
UPDATE t2 SET b = (b || b || b || b);
UPDATE t2 SET b = (b || b || b || b);
UPDATE t2 SET b = (b || b || b || b);
UPDATE t2 SET b = (b || b || b || b);
}]
db close
set abc [string repeat abc 256]
set def [string repeat def 256]
do_faultsim_test 5.2 -faults oom-tra* -body {
set ::inverse [sqlite3changeset_invert $::changeset]
set {} {}
} -test {
faultsim_test_result {0 {}} {1 SQLITE_NOMEM}
if {$testrc==0} {
set x [list]
sqlite3session_foreach c $::inverse { lappend x $c }
foreach c "
{UPDATE t2 0 X. {i 1 t $::abc} {{} {} t abc}}
{UPDATE t2 0 X. {i 2 t $::def} {{} {} t def}}
" { lappend y $c }
if {$x != $y} { error "changeset no good" }
}
}
catch {db close}
catch {db2 close}
forcedelete test.db
sqlite3 db test.db
set abc [string repeat abc 256]
set def [string repeat def 256]
execsql "
CREATE TABLE t2(a PRIMARY KEY, b);
INSERT INTO t2 VALUES(1, '$abc');
"
set changeset [changeset_from_sql "
INSERT INTO t2 VALUES(2, '$def');
DELETE FROM t2 WHERE a = 1;
"]
db close
do_faultsim_test 5.3 -faults oom-tra* -body {
set ::inverse [sqlite3changeset_invert $::changeset]
set {} {}
} -test {
faultsim_test_result {0 {}} {1 SQLITE_NOMEM}
if {$testrc==0} {
set x [list]
sqlite3session_foreach c $::inverse { lappend x $c }
foreach c "
{INSERT t2 0 X. {} {i 1 t $::abc}}
{DELETE t2 0 X. {i 2 t $::def} {}}
" { lappend y $c }
if {$x != $y} { error "changeset no good" }
}
}
#-------------------------------------------------------------------------
# Test that OOM errors in sqlite3changeset_concat() are handled correctly.
#
catch {db close}
forcedelete test.db
sqlite3 db test.db
do_execsql_test 5.prep1 {
CREATE TABLE t1(a, b, PRIMARY KEY(b));
CREATE TABLE t2(a PRIMARY KEY, b);
INSERT INTO t1 VALUES('string', 1);
INSERT INTO t1 VALUES(4, 2);
INSERT INTO t1 VALUES(X'FFAAFFAAFFAA', 3);
}
do_test 6.prep2 {
sqlite3session M db main
M attach *
set ::c2 [changeset_from_sql {
INSERT INTO t2 VALUES(randomblob(1000), randomblob(1000));
INSERT INTO t2 VALUES('one', 'two');
INSERT INTO t2 VALUES(1, NULL);
UPDATE t1 SET a = 5 WHERE a = 2;
}]
set ::c1 [changeset_from_sql {
DELETE FROM t2 WHERE a = 1;
UPDATE t1 SET a = 4 WHERE a = 2;
INSERT INTO t2 VALUES('x', 'y');
}]
set ::total [changeset_to_list [M changeset]]
M delete
} {}
do_faultsim_test 6 -faults oom-* -body {
set ::result [sqlite3changeset_concat $::c1 $::c2]
set {} {}
} -test {
faultsim_test_result {0 {}} {1 SQLITE_NOMEM}
if {$testrc==0} {
set v [changeset_to_list $::result]
if {$v != $::total} { error "result no good" }
}
}
faultsim_delete_and_reopen
do_execsql_test 7.prep1 {
CREATE TABLE t1(a, b, PRIMARY KEY(a));
}
faultsim_save_and_close
set res [list]
for {set ::i 0} {$::i < 480} {incr ::i 4} {
lappend res "INSERT t1 0 X. {} {i $::i i $::i}"
}
set res [lsort $res]
do_faultsim_test 7 -faults oom-transient -prep {
catch { S delete }
faultsim_restore_and_reopen
sqlite3session S db main
S attach *
} -body {
for {set ::i 0} {$::i < 480} {incr ::i 4} {
execsql {INSERT INTO t1 VALUES($::i, $::i)}
}
} -test {
faultsim_test_result {0 {}} {1 SQLITE_NOMEM}
if {$testrc==0} {
set cres [list [catch {changeset_to_list [S changeset]} msg] $msg]
S delete
if {$cres != "1 SQLITE_NOMEM" && $cres != "0 {$::res}"} {
error "Expected {0 $::res} Got {$cres}"
}
} else {
catch { S changeset }
catch { S delete }
}
}
faultsim_delete_and_reopen
do_test 8.prep {
sqlite3session S db main
S attach *
execsql {
CREATE TABLE t1(a, b, PRIMARY KEY(a));
INSERT INTO t1 VALUES(1, 2);
INSERT INTO t1 VALUES(3, 4);
INSERT INTO t1 VALUES(5, 6);
}
set ::changeset [S changeset]
S delete
} {}
set expected [normalize_list {
{INSERT t1 0 X. {} {i 1 i 2}}
{INSERT t1 0 X. {} {i 3 i 4}}
{INSERT t1 0 X. {} {i 5 i 6}}
}]
do_faultsim_test 8.1 -faults oom* -body {
set ::res [list]
sqlite3session_foreach -next v $::changeset { lappend ::res $v }
normalize_list $::res
} -test {
faultsim_test_result [list 0 $::expected] {1 SQLITE_NOMEM}
}
do_faultsim_test 8.2 -faults oom* -body {
set ::res [list]
sqlite3session_foreach v $::changeset { lappend ::res $v }
normalize_list $::res
} -test {
faultsim_test_result [list 0 $::expected] {1 SQLITE_NOMEM}
}
faultsim_delete_and_reopen
do_test 9.1.prep {
execsql {
PRAGMA encoding = 'utf16';
CREATE TABLE t1(a PRIMARY KEY, b);
}
} {}
faultsim_save_and_close
set answers [list {0 {}} {1 SQLITE_NOMEM} \
{1 {callback requested query abort}} \
{1 {abort due to ROLLBACK}}]
do_faultsim_test 9.1 -faults oom-transient -prep {
catch { unset ::c }
faultsim_restore_and_reopen
sqlite3session S db main
S attach *
} -body {
execsql {
INSERT INTO t1 VALUES('abcdefghijklmnopqrstuv', 'ABCDEFGHIJKLMNOPQRSTUV');
}
set ::c [S changeset]
set {} {}
} -test {
S delete
eval faultsim_test_result $::answers
if {[info exists ::c]} {
set expected [normalize_list {
{INSERT t1 0 X. {} {t abcdefghijklmnopqrstuv t ABCDEFGHIJKLMNOPQRSTUV}}
}]
if { [changeset_to_list $::c] != $expected } {
error "changeset mismatch"
}
}
}
faultsim_delete_and_reopen
do_test 9.2.prep {
execsql {
PRAGMA encoding = 'utf16';
CREATE TABLE t1(a PRIMARY KEY, b);
INSERT INTO t1 VALUES('abcdefghij', 'ABCDEFGHIJKLMNOPQRSTUV');
}
} {}
faultsim_save_and_close
set answers [list {0 {}} {1 SQLITE_NOMEM} \
{1 {callback requested query abort}} \
{1 {abort due to ROLLBACK}}]
do_faultsim_test 9.2 -faults oom-transient -prep {
catch { unset ::c }
faultsim_restore_and_reopen
sqlite3session S db main
S attach *
} -body {
execsql {
UPDATE t1 SET b = 'xyz';
}
set ::c [S changeset]
set {} {}
} -test {
S delete
eval faultsim_test_result $::answers
if {[info exists ::c]} {
set expected [normalize_list {
{UPDATE t1 0 X. {t abcdefghij t ABCDEFGHIJKLMNOPQRSTUV} {{} {} t xyz}}
}]
if { [changeset_to_list $::c] != $expected } {
error "changeset mismatch"
}
}
}
#-------------------------------------------------------------------------
# Test that if a conflict-handler encounters an OOM in
# sqlite3_value_text() but goes on to return SQLITE_CHANGESET_REPLACE
# anyway, the OOM is picked up by the sessions module.
set bigstr [string repeat abcdefghij 100]
faultsim_delete_and_reopen
do_test 10.prep.1 {
execsql {
CREATE TABLE t1(a PRIMARY KEY, b);
INSERT INTO t1 VALUES($bigstr, $bigstr);
}
sqlite3session S db main
S attach *
execsql { UPDATE t1 SET b = b||'x' }
set C [S changeset]
S delete
execsql { UPDATE t1 SET b = b||'xyz' }
} {}
faultsim_save_and_close
faultsim_restore_and_reopen
do_test 10.prep.2 {
proc xConflict {args} { return "ABORT" }
list [catch { sqlite3changeset_apply db $C xConflict } msg] $msg
} {1 SQLITE_ABORT}
do_execsql_test 10.prep.3 { SELECT b=$bigstr||'x' FROM t1 } 0
do_test 10.prep.4 {
proc xConflict {args} { return "REPLACE" }
list [catch { sqlite3changeset_apply db $C xConflict } msg] $msg
} {0 {}}
do_execsql_test 10.prep.5 { SELECT b=$bigstr||'x' FROM t1 } 1
db close
do_faultsim_test 10 -faults oom-tra* -prep {
faultsim_restore_and_reopen
} -body {
sqlite3changeset_apply_replace_all db $::C
} -test {
faultsim_test_result {0 {}} {1 SQLITE_NOMEM}
if {$testrc==0} {
if {[db one {SELECT b=$bigstr||'x' FROM t1}]==0} {
error "data does not look right"
}
}
}
#-------------------------------------------------------------------------
# Test an OOM with an sqlite3changeset_apply() filter callback.
#
reset_db
do_test 11.prep {
execsql {
CREATE TABLE t1(a PRIMARY KEY, b);
CREATE TABLE t2(x PRIMARY KEY, y);
BEGIN;
}
set ::cs [changeset_from_sql {
INSERT INTO t1 VALUES(1, 2);
INSERT INTO t2 VALUES('x', 'y');
}]
execsql ROLLBACK
set {} {}
} {}
proc filter {x} { return [string equal t1 $x] }
faultsim_save_and_close
do_faultsim_test 11 -faults oom-tra* -prep {
faultsim_restore_and_reopen
} -body {
sqlite3changeset_apply db $::cs {} filter
} -test {
faultsim_test_result {0 {}} {1 SQLITE_NOMEM}
if {$testrc==0} {
if {[db eval {SELECT * FROM t1 UNION ALL SELECT * FROM t2}] != "1 2"} {
error "data does not look right"
}
}
}
finish_test