mirror of https://github.com/sqlite/sqlite
591 lines
17 KiB
Plaintext
591 lines
17 KiB
Plaintext
# 2007 May 8
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#
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# The author disclaims copyright to this source code. In place of
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# a legal notice, here is a blessing:
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#
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# May you do good and not evil.
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# May you find forgiveness for yourself and forgive others.
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# May you share freely, never taking more than you give.
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#
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#***********************************************************************
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#
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# This file contains tests to verify that the limits defined in
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# sqlite source file limits.h are enforced.
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#
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# $Id: sqllimits1.test,v 1.20 2007/11/28 22:36:41 drh Exp $
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set testdir [file dirname $argv0]
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source $testdir/tester.tcl
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# Test organization:
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#
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# sqllimits-1.*: SQLITE_MAX_LENGTH
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# sqllimits-2.*: SQLITE_MAX_SQL_LENGTH
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# sqllimits-3.*: SQLITE_MAX_PAGE_COUNT (and the max_page_count pragma)
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# sqllimits-4.*: SQLITE_MAX_COLUMN
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#
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#
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# sqllimits-7.*: SQLITE_MAX_FUNCTION_ARG
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# sqllimits-8.*: SQLITE_MAX_ATTACHED
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# sqllimits-9.*: SQLITE_MAX_VARIABLE_NUMBER
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# sqllimits-10.*: SQLITE_MAX_PAGE_SIZE
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# sqllimits-11.*: SQLITE_MAX_LIKE_PATTERN_LENGTH
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#
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# Todo:
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#
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# sqllimits-5.*: SQLITE_MAX_EXPR_DEPTH (sqlite todo)
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# sqllimits-6.*: SQLITE_MAX_VDBE_OP (sqlite todo)
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# sqllimits-12.*: SQLITE_MAX_PAGE_COUNT (sqlite todo)
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#
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unset -nocomplain saved
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foreach var [info vars SQLITE_MAX_*] {
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set saved($var) [set $var]
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}
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set SQLITE_MAX_LENGTH 100000
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set SQLITE_MAX_COLUMN
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set SQLITE_MAX_SQL_LENGTH 50000
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set SQLITE_MAX_EXPR_DEPTH 1000
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set SQLITE_MAX_COMPOUND_SELECT 5
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set SQLITE_MAX_VDBE_OP
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set SQLITE_MAX_FUNCTION_ARG
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set SQLITE_MAX_VARIABLE_NUMBER
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set SQLITE_MAX_PAGE_SIZE
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set SQLITE_MAX_PAGE_COUNT
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set SQLITE_MAX_LIKE_PATTERN_LENGTH 1000
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#--------------------------------------------------------------------
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# Test cases sqllimits-1.* test that the SQLITE_MAX_LENGTH limit
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# is enforced.
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#
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do_test sqllimits-1.1.1 {
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catchsql { SELECT randomblob(2147483647) }
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} {1 {string or blob too big}}
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do_test sqllimits-1.1.2 {
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catchsql { SELECT zeroblob(2147483647) }
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} {1 {string or blob too big}}
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# Large, but allowable, blob-size.
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#
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set ::LARGESIZE [expr $SQLITE_MAX_LENGTH - 1]
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do_test sqllimits-1.2 {
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catchsql { SELECT LENGTH(randomblob($::LARGESIZE)) }
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} "0 $::LARGESIZE"
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do_test sqllimits-1.3 {
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catchsql { SELECT quote(randomblob($::LARGESIZE)) }
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} {1 {string or blob too big}}
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do_test sqllimits-1.4 {
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catchsql { SELECT LENGTH(zeroblob($::LARGESIZE)) }
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} "0 $::LARGESIZE"
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do_test sqllimits-1.5 {
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catchsql { SELECT quote(zeroblob($::LARGESIZE)) }
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} {1 {string or blob too big}}
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do_test sqllimits-1.6 {
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catchsql { SELECT zeroblob(-1) }
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} {0 {{}}}
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do_test sqllimits-1.9 {
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set ::str [string repeat A 65537]
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set ::rep [string repeat B 65537]
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catchsql { SELECT replace($::str, 'A', $::rep) }
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} {1 {string or blob too big}}
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do_test sqllimits-1.10 {
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set ::str [string repeat %J 2100]
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catchsql { SELECT strftime($::str, '2003-10-31') }
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} {1 {string or blob too big}}
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do_test sqllimits-1.11 {
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set ::str1 [string repeat A [expr {$SQLITE_MAX_LENGTH - 10}]]
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set ::str2 [string repeat B [expr {$SQLITE_MAX_LENGTH - 10}]]
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catchsql { SELECT $::str1 || $::str2 }
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} {1 {string or blob too big}}
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do_test sqllimits-1.12 {
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set ::str1 [string repeat ' [expr {$SQLITE_MAX_LENGTH - 10}]]
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catchsql { SELECT quote($::str1) }
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} {1 {string or blob too big}}
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do_test sqllimits-1.13 {
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set ::str1 [string repeat ' [expr {$SQLITE_MAX_LENGTH - 10}]]
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catchsql { SELECT hex($::str1) }
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} {1 {string or blob too big}}
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do_test sqllimits-1.14.1 {
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set ::STMT [sqlite3_prepare $::DB "SELECT ?" -1 TAIL]
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sqlite3_bind_zeroblob $::STMT 1 [expr {$SQLITE_MAX_LENGTH + 1}]
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} {}
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do_test sqllimits-1.14.2 {
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sqlite3_step $::STMT
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} {SQLITE_ERROR}
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do_test sqllimits-1.14.3 {
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sqlite3_finalize $::STMT
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} {SQLITE_TOOBIG}
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do_test sqllimits-1.15 {
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execsql {
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CREATE TABLE t4(x);
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INSERT INTO t4 VALUES(1);
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INSERT INTO t4 VALUES(2);
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INSERT INTO t4 SELECT 2+x FROM t4;
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}
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catchsql {
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SELECT group_concat(hex(randomblob(20000))) FROM t4;
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}
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} {1 {string or blob too big}}
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db eval {DROP TABLE t4}
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#--------------------------------------------------------------------
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# Test cases sqllimits-2.* test that the SQLITE_MAX_SQL_LENGTH limit
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# is enforced.
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#
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do_test sqllimits-2.1 {
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set sql "SELECT 1 WHERE 1==1"
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set N [expr {$::SQLITE_MAX_SQL_LENGTH / [string length " AND 1==1"]}]
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append sql [string repeat " AND 1==1" $N]
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catchsql $sql
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} {1 {String or BLOB exceeded size limit}}
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#--------------------------------------------------------------------
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# Test cases sqllimits-3.* test that the limit set using the
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# max_page_count pragma.
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#
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do_test sqllimits-3.1 {
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execsql {
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PRAGMA max_page_count = 1000;
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}
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} {1000}
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do_test sqllimits-3.2 {
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execsql { CREATE TABLE trig (a INTEGER, b INTEGER); }
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# Set up a tree of triggers to fire when a row is inserted
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# into table "trig".
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#
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# INSERT -> insert_b -> update_b -> insert_a -> update_a (chain 1)
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# -> update_a -> insert_a -> update_b (chain 2)
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# -> insert_a -> update_b -> insert_b -> update_a (chain 3)
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# -> update_a -> insert_b -> update_b (chain 4)
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#
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# Table starts with N rows.
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#
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# Chain 1: insert_b (update N rows)
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# -> update_b (insert 1 rows)
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# -> insert_a (update N rows)
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# -> update_a (insert 1 rows)
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#
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# chains 2, 3 and 4 are similar. Each inserts more than N^2 rows, where
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# N is the number of rows at the conclusion of the previous chain.
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#
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# Therefore, a single insert adds (N^16 plus some) rows to the database.
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# A really long loop...
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#
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execsql {
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CREATE TRIGGER update_b BEFORE UPDATE ON trig
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FOR EACH ROW BEGIN
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INSERT INTO trig VALUES (65, 'update_b');
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END;
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CREATE TRIGGER update_a AFTER UPDATE ON trig
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FOR EACH ROW BEGIN
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INSERT INTO trig VALUES (65, 'update_a');
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END;
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CREATE TRIGGER insert_b BEFORE INSERT ON trig
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FOR EACH ROW BEGIN
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UPDATE trig SET a = 1;
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END;
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CREATE TRIGGER insert_a AFTER INSERT ON trig
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FOR EACH ROW BEGIN
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UPDATE trig SET a = 1;
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END;
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}
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} {}
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do_test sqllimits1-3.3 {
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execsql {
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INSERT INTO trig VALUES (1,1);
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}
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} {}
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do_test sqllimits1-3.4 {
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execsql {
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SELECT COUNT(*) FROM trig;
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}
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} {7}
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# This tries to insert so many rows it fills up the database (limited
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# to 1MB, so not that noteworthy an achievement).
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#
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do_test sqllimits1-3.5 {
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catchsql {
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INSERT INTO trig VALUES (1,10);
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}
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} {1 {database or disk is full}}
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do_test sqllimits1-3.6 {
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catchsql {
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SELECT COUNT(*) FROM trig;
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}
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} {0 7}
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# Now check the response of the library to opening a file larger than
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# the current max_page_count value. The response is to change the
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# internal max_page_count value to match the actual size of the file.
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do_test sqllimits1-3.7.1 {
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execsql {
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PRAGMA max_page_count = 1000000;
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CREATE TABLE abc(a, b, c);
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INSERT INTO abc VALUES(1, 2, 3);
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INSERT INTO abc SELECT a||b||c, b||c||a, c||a||b FROM abc;
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INSERT INTO abc SELECT a||b||c, b||c||a, c||a||b FROM abc;
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INSERT INTO abc SELECT a||b||c, b||c||a, c||a||b FROM abc;
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INSERT INTO abc SELECT a||b||c, b||c||a, c||a||b FROM abc;
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INSERT INTO abc SELECT a||b||c, b||c||a, c||a||b FROM abc;
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INSERT INTO abc SELECT a||b||c, b||c||a, c||a||b FROM abc;
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INSERT INTO abc SELECT a||b||c, b||c||a, c||a||b FROM abc;
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INSERT INTO abc SELECT a||b||c, b||c||a, c||a||b FROM abc;
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INSERT INTO abc SELECT a, b, c FROM abc;
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INSERT INTO abc SELECT b, a, c FROM abc;
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INSERT INTO abc SELECT c, b, a FROM abc;
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}
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expr [file size test.db] / 1024
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} {1691}
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do_test sqllimits1-3.7.2 {
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db close
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sqlite3 db test.db
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execsql {
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PRAGMA max_page_count = 1000;
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}
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execsql {
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SELECT count(*) FROM sqlite_master;
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}
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} {6}
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do_test sqllimits1-3.7.3 {
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execsql {
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PRAGMA max_page_count;
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}
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} {1691}
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do_test sqllimits1-3.7.4 {
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execsql {
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DROP TABLE abc;
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}
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} {}
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#--------------------------------------------------------------------
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# Test cases sqllimits1-4.* test the SQLITE_MAX_COLUMN limit.
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#
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do_test sqllimits-1.4.1 {
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# Columns in a table.
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set cols [list]
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for {set i 0} {$i <= $SQLITE_MAX_COLUMN} {incr i} {
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lappend cols "c$i"
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}
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catchsql "CREATE TABLE t([join $cols ,])"
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} {1 {too many columns on t}}
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do_test sqllimits-1.4.2 {
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# Columns in the result-set of a SELECT.
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set cols [list]
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for {set i 0} {$i <= $SQLITE_MAX_COLUMN} {incr i} {
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lappend cols "sql AS sql$i"
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}
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catchsql "SELECT [join $cols ,] FROM sqlite_master"
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} {1 {too many columns in result set}}
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do_test sqllimits-1.4.3 {
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# Columns in the result-set of a sub-SELECT.
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set cols [list]
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for {set i 0} {$i <= $SQLITE_MAX_COLUMN} {incr i} {
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lappend cols "sql AS sql$i"
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}
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catchsql "SELECT sql4 FROM (SELECT [join $cols ,] FROM sqlite_master)"
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} {1 {too many columns in result set}}
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do_test sqllimits-1.4.4 {
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# Columns in an index.
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set cols [list]
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for {set i 0} {$i <= $SQLITE_MAX_COLUMN} {incr i} {
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lappend cols c
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}
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set sql1 "CREATE TABLE t1(c);"
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set sql2 "CREATE INDEX i1 ON t1([join $cols ,]);"
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catchsql "$sql1 ; $sql2"
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} {1 {too many columns in index}}
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do_test sqllimits-1.4.5 {
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# Columns in a GROUP BY clause.
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catchsql "SELECT * FROM t1 GROUP BY [join $cols ,]"
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} {1 {too many terms in GROUP BY clause}}
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do_test sqllimits-1.4.6 {
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# Columns in an ORDER BY clause.
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catchsql "SELECT * FROM t1 ORDER BY [join $cols ,]"
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} {1 {too many terms in ORDER BY clause}}
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do_test sqllimits-1.4.7 {
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# Assignments in an UPDATE statement.
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set cols [list]
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for {set i 0} {$i <= $SQLITE_MAX_COLUMN} {incr i} {
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lappend cols "c = 1"
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}
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catchsql "UPDATE t1 SET [join $cols ,];"
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} {1 {too many columns in set list}}
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do_test sqllimits-1.4.8 {
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# Columns in a view definition:
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set cols [list]
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for {set i 0} {$i <= $SQLITE_MAX_COLUMN} {incr i} {
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lappend cols "c$i"
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}
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catchsql "CREATE VIEW v1 AS SELECT [join $cols ,] FROM t1;"
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} {1 {too many columns in result set}}
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do_test sqllimits-1.4.9 {
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# Columns in a view definition (testing * expansion):
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set cols [list]
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for {set i 0} {$i < $SQLITE_MAX_COLUMN} {incr i} {
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lappend cols "c$i"
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}
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catchsql "CREATE TABLE t2([join $cols ,])"
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catchsql "CREATE VIEW v1 AS SELECT *, c1 AS o FROM t2;"
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} {1 {too many columns in result set}}
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#--------------------------------------------------------------------
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# These tests - sqllimits-5.* - test that the SQLITE_MAX_EXPR_DEPTH
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# limit is enforced. The limit refers to the number of terms in
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# the expression.
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#
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if {$::SQLITE_MAX_EXPR_DEPTH != 1000} {
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puts -nonewline stderr "WARNING: Compile with -DSQLITE_MAX_EXPR_DEPTH to run "
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puts stderr "tests sqllimits-1.5.X"
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} else {
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do_test sqllimits-1.5.1 {
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set max $::SQLITE_MAX_EXPR_DEPTH
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set expr "(1 [string repeat {AND 1 } $max])"
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catchsql [subst {
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SELECT $expr
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}]
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} "1 {Expression tree is too large (maximum depth $::SQLITE_MAX_EXPR_DEPTH)}"
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# Attempting to beat the expression depth limit using nested SELECT
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# queries causes a parser stack overflow.
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do_test sqllimits-1.5.2 {
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set max $::SQLITE_MAX_EXPR_DEPTH
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set expr "SELECT 1"
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for {set i 0} {$i <= $max} {incr i} {
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set expr "SELECT ($expr)"
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}
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catchsql [subst { $expr }]
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} "1 {parser stack overflow}"
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do_test sqllimits-1.5.3 {
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execsql {
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PRAGMA max_page_count = 1000000; -- 1 GB
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CREATE TABLE v0(a);
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INSERT INTO v0 VALUES(1);
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}
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db transaction {
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for {set i 1} {$i < 200} {incr i} {
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set expr "(a [string repeat {AND 1 } 50]) AS a"
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execsql [subst {
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CREATE VIEW v${i} AS SELECT $expr FROM v[expr {$i-1}]
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}]
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}
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}
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} {}
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do_test sqllimits-1.5.4 {
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catchsql {
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SELECT a FROM v199
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}
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} "1 {Expression tree is too large (maximum depth $::SQLITE_MAX_EXPR_DEPTH)}"
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}
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#--------------------------------------------------------------------
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# Test cases sqllimits-6.* test that the SQLITE_MAX_VDBE_OP
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# limit works as expected. The limit refers to the number of opcodes
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# in a single VDBE program.
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#
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# TODO
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#--------------------------------------------------------------------
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# Test the SQLITE_MAX_FUNCTION_ARG limit works. Test case names
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# match the pattern "sqllimits-7.*".
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#
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do_test sqllimits-1.7.1 {
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set max $::SQLITE_MAX_FUNCTION_ARG
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set vals [list]
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for {set i 0} {$i < $SQLITE_MAX_FUNCTION_ARG} {incr i} {
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lappend vals $i
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}
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catchsql "SELECT max([join $vals ,])"
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} "0 [expr {$::SQLITE_MAX_FUNCTION_ARG - 1}]"
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do_test sqllimits-1.7.2 {
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set max $::SQLITE_MAX_FUNCTION_ARG
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set vals [list]
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for {set i 0} {$i <= $SQLITE_MAX_FUNCTION_ARG} {incr i} {
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lappend vals $i
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}
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catchsql "SELECT max([join $vals ,])"
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} {1 {too many arguments on function max}}
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# Test that it is SQLite, and not the implementation of the
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# user function that is throwing the error.
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proc myfunc {args} {error "I don't like to be called!"}
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do_test sqllimits-1.7.2 {
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db function myfunc myfunc
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set max $::SQLITE_MAX_FUNCTION_ARG
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set vals [list]
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for {set i 0} {$i <= $SQLITE_MAX_FUNCTION_ARG} {incr i} {
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lappend vals $i
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}
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catchsql "SELECT myfunc([join $vals ,])"
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} {1 {too many arguments on function myfunc}}
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#--------------------------------------------------------------------
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# Test cases sqllimits-8.*: Test the SQLITE_MAX_ATTACHED limit.
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#
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ifcapable attach {
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do_test sqllimits-1.8.1 {
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set max $::SQLITE_MAX_ATTACHED
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for {set i 0} {$i < ($max)} {incr i} {
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file delete -force test${i}.db test${i}.db-journal
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}
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for {set i 0} {$i < ($max)} {incr i} {
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execsql "ATTACH 'test${i}.db' AS aux${i}"
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}
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catchsql "ATTACH 'test${i}.db' AS aux${i}"
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} "1 {too many attached databases - max $::SQLITE_MAX_ATTACHED}"
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do_test sqllimits-1.8.2 {
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set max $::SQLITE_MAX_ATTACHED
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for {set i 0} {$i < ($max)} {incr i} {
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execsql "DETACH aux${i}"
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}
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} {}
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}
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#--------------------------------------------------------------------
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# Test cases sqllimits-9.*: Check that the SQLITE_MAX_VARIABLE_NUMBER
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# limit works.
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#
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do_test sqllimits-1.9.1 {
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|
set max $::SQLITE_MAX_VARIABLE_NUMBER
|
|
catchsql "SELECT ?[expr {$max+1}] FROM t1"
|
|
} "1 {variable number must be between ?1 and ?$::SQLITE_MAX_VARIABLE_NUMBER}"
|
|
do_test sqllimits-1.9.2 {
|
|
set max $::SQLITE_MAX_VARIABLE_NUMBER
|
|
set vals [list]
|
|
for {set i 0} {$i < ($max+3)} {incr i} {
|
|
lappend vals ?
|
|
}
|
|
catchsql "SELECT [join $vals ,] FROM t1"
|
|
} "1 {too many SQL variables}"
|
|
|
|
|
|
#--------------------------------------------------------------------
|
|
# sqllimits-10.*: Test the SQLITE_MAX_PAGE_SIZE define is enforced.
|
|
# This is probably tested elsewhere too (pagerX.test). Attempts
|
|
# to raise the page size above this limit are silently ignored.
|
|
#
|
|
do_test sqllimits-1.10.1 {
|
|
db close
|
|
file delete -force test.db test.db-journal
|
|
sqlite3 db test.db
|
|
set max $::SQLITE_MAX_PAGE_SIZE
|
|
catchsql "PRAGMA page_size = [expr {$max*2}]"
|
|
} {0 {}}
|
|
do_test sqllimits-1.10.2 {
|
|
catchsql "PRAGMA page_size"
|
|
} {0 1024}
|
|
do_test sqllimits-1.10.3 {
|
|
set max $::SQLITE_MAX_PAGE_SIZE
|
|
catchsql "PRAGMA page_size = $max"
|
|
} {0 {}}
|
|
do_test sqllimits-1.10.4 {
|
|
execsql "pragma page_size"
|
|
} $::SQLITE_MAX_PAGE_SIZE
|
|
do_test sqllimits-1.10.5 {
|
|
set max $::SQLITE_MAX_PAGE_SIZE
|
|
execsql "pragma page_size = [expr {$max - 5}]"
|
|
execsql "pragma page_size"
|
|
} $::SQLITE_MAX_PAGE_SIZE
|
|
|
|
# Opening a database where the page size is too large should generate
|
|
# an error.
|
|
#
|
|
do_test sqllimits-1.10.5 {
|
|
db close
|
|
file delete -force test.db
|
|
set ::SQLITE_MAX_PAGE_SIZE 32768
|
|
sqlite3 db test.db
|
|
db eval {PRAGMA page_size=32768}
|
|
db eval {CREATE TABLE t1(x);}
|
|
db eval {PRAGMA page_size}
|
|
} {32768}
|
|
do_test sqllimits-1.10.6 {
|
|
db close
|
|
set ::SQLITE_MAX_PAGE_SIZE 8192
|
|
sqlite3 db test.db
|
|
catchsql {SELECT name FROM sqlite_master}
|
|
} {1 {file is encrypted or is not a database}}
|
|
db close
|
|
file delete -force test.db
|
|
sqlite3 db test.db
|
|
|
|
#--------------------------------------------------------------------
|
|
# Test cases sqllimits-11.* verify that the
|
|
# SQLITE_MAX_LIKE_PATTERN_LENGTH limit is enforced. This limit only
|
|
# applies to the built-in LIKE operator, supplying an external
|
|
# implementation by overriding the like() scalar function bypasses
|
|
# this limitation.
|
|
#
|
|
# These tests check that the limit is not incorrectly applied to
|
|
# the left-hand-side of the LIKE operator (the string being tested
|
|
# against the pattern).
|
|
#
|
|
do_test sqllimits-1.11.1 {
|
|
set max $::SQLITE_MAX_LIKE_PATTERN_LENGTH
|
|
set ::pattern [string repeat "A%" [expr $max/2]]
|
|
set ::string [string repeat "A" [expr {$max*2}]]
|
|
execsql {
|
|
SELECT $::string LIKE $::pattern;
|
|
}
|
|
} {1}
|
|
do_test sqllimits-1.11.2 {
|
|
set max $::SQLITE_MAX_LIKE_PATTERN_LENGTH
|
|
set ::pattern [string repeat "A%" [expr {($max/2) + 1}]]
|
|
set ::string [string repeat "A" [expr {$max*2}]]
|
|
catchsql {
|
|
SELECT $::string LIKE $::pattern;
|
|
}
|
|
} {1 {LIKE or GLOB pattern too complex}}
|
|
|
|
#--------------------------------------------------------------------
|
|
# This test case doesn't really belong with the other limits tests.
|
|
# It is in this file because it is taxing to run, like the limits tests.
|
|
#
|
|
do_test sqllimits-1.12.1 {
|
|
set ::N [expr int(([expr pow(2,32)]/50) + 1)]
|
|
expr (($::N*50) & 0xffffffff)<55
|
|
} {1}
|
|
do_test sqllimits-1.12.2 {
|
|
set ::format "[string repeat A 60][string repeat "%J" $::N]"
|
|
catchsql {
|
|
SELECT strftime($::format, 1);
|
|
}
|
|
} {1 {string or blob too big}}
|
|
|
|
|
|
foreach {key value} [array get saved] {
|
|
catch {set $key $value}
|
|
}
|
|
finish_test
|