396 lines
12 KiB
Plaintext
396 lines
12 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 1.6 2007/05/09 15:56:40 danielk1977 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
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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_LENGTH (sqlite todo)
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# sqllimits-6.*: SQLITE_MAX_VDBE_OP (sqlite todo)
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#
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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 {
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catchsql { SELECT randomblob(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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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', $::rep) }
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} {1 {string or blob too big}}
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#--------------------------------------------------------------------
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# Test cases sqllimits-2.* test that the SQLITE_MAX_SQL_LENGTH limit
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# is enforced.
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#
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do_test sqllimits-2.1 {
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set sql "SELECT 1 WHERE 1==1"
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set N [expr {$::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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#--------------------------------------------------------------------
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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 $cols ,])"
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catchsql "CREATE VIEW v1 AS SELECT *, c1 AS o FROM t2;"
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} {1 {too many columns in result set}}
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#--------------------------------------------------------------------
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# These tests - sqllimits-5.* - test that the SQLITE_MAX_EXPR_LENGTH
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# limit is enforced. The limit refers to the number of terms in
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# the expression.
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#
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# TODO
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do_test sqllimits-1.5.1 {
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execsql {
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PRAGMA max_page_count = 1000000; -- 1 GB
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CREATE TABLE v0(a);
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}
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db transaction {
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for {set i 1} {$i < 2000} {incr i} {
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set expr "([string repeat {a AND } 50]a AND a) AS a"
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execsql [subst {
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CREATE VIEW v${i} AS SELECT $expr FROM v0
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}]
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}
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}
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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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# TODO
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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 < ($max)} {incr i} {
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execsql "ATTACH 'test${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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# 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 $::SQLITE_MAX_VARIABLE_NUMBER
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catchsql "SELECT ?[expr {$max+1}] FROM t1"
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} "1 {variable number must be between ?1 and ?$::SQLITE_MAX_VARIABLE_NUMBER}"
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do_test sqllimits-1.9.2 {
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set max $::SQLITE_MAX_VARIABLE_NUMBER
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set vals [list]
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for {set i 0} {$i < ($max+3)} {incr i} {
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lappend vals ?
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}
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catchsql "SELECT [join $vals ,] FROM t1"
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} "1 {too many SQL variables}"
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#--------------------------------------------------------------------
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# sqllimits-10.*: Test the SQLITE_MAX_PAGE_SIZE define is enforced.
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# This is probably tested elsewhere too (pagerX.test). Attempts
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# to raise the page size above this limit are silently ignored.
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#
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do_test sqllimits-1.10.1 {
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db close
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file delete -force test.db test.db-journal
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sqlite3 db test.db
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set max $::SQLITE_MAX_PAGE_SIZE
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catchsql "PRAGMA page_size = [expr {$max*2}]"
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} {0 {}}
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do_test sqllimits-1.10.2 {
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catchsql "PRAGMA page_size"
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} {0 1024}
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do_test sqllimits-1.10.3 {
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set max $::SQLITE_MAX_PAGE_SIZE
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catchsql "PRAGMA page_size = $max"
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} {0 {}}
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do_test sqllimits-1.10.4 {
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execsql "pragma page_size"
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} $::SQLITE_MAX_PAGE_SIZE
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do_test sqllimits-1.10.5 {
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set max $::SQLITE_MAX_PAGE_SIZE
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execsql "pragma page_size = [expr {$max - 5}]"
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execsql "pragma page_size"
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} $::SQLITE_MAX_PAGE_SIZE
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#--------------------------------------------------------------------
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# Test cases sqllimits-11.* verify that the
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# SQLITE_MAX_LIKE_PATTERN_LENGTH limit is enforced. This limit only
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# applies to the built-in LIKE operator, supplying an external
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# implementation by overriding the like() scalar function bypasses
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# this limitation.
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#
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# These tests check that the limit is not incorrectly applied to
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# the left-hand-side of the LIKE operator (the string being tested
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# against the pattern).
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#
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do_test sqllimits-1.11.1 {
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set max $::SQLITE_MAX_LIKE_PATTERN_LENGTH
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set ::pattern [string repeat "A%" [expr $max/2]]
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set ::string [string repeat "A" [expr {$max*2}]]
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execsql {
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SELECT $::string LIKE $::pattern;
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}
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} {1}
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do_test sqllimits-1.11.2 {
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set max $::SQLITE_MAX_LIKE_PATTERN_LENGTH
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set ::pattern [string repeat "A%" [expr {($max/2) + 1}]]
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set ::string [string repeat "A" [expr {$max*2}]]
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catchsql {
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SELECT $::string LIKE $::pattern;
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}
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} {1 {LIKE or GLOB pattern too complex}}
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finish_test
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