# 2007 May 10
#
# 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 implements regression tests for SQLite library. The
# focus of this file is generating semi-random strings of SQL
# (a.k.a. "fuzz") and sending it into the parser to try to
# generate errors.
#
# The tests in this file are really about testing fuzzily generated
# SQL parse-trees. The majority of the fuzzily generated SQL is
# valid as far as the parser is concerned.
#
# The most complicated trees are for SELECT statements.
#
# $Id: fuzz.test,v 1.19 2009/04/28 11:10:39 danielk1977 Exp $
set testdir [file dirname $argv0]
source $testdir/tester.tcl
set ::REPEATS 5000
# If running quick.test, don't do so many iterations.
if {[info exists ::G(isquick)]} {
if {$::G(isquick)} { set ::REPEATS 20 }
}
source $testdir/fuzz_common.tcl
expr srand(0)
#----------------------------------------------------------------
# These tests caused errors that were first caught by the tests
# in this file. They are still here.
do_test fuzz-1.1 {
execsql {
SELECT 'abc' LIKE X'ABCD';
}
} {0}
do_test fuzz-1.2 {
execsql {
SELECT 'abc' LIKE zeroblob(10);
}
} {0}
do_test fuzz-1.3 {
execsql {
SELECT zeroblob(10) LIKE 'abc';
}
} {0}
do_test fuzz-1.4 {
execsql {
SELECT (- -21) % NOT (456 LIKE zeroblob(10));
}
} {0}
do_test fuzz-1.5 {
execsql {
SELECT (SELECT (
SELECT (SELECT -2147483648) FROM (SELECT 1) ORDER BY 1
))
}
} {-2147483648}
do_test fuzz-1.6 {
execsql {
SELECT 'abc', zeroblob(1) FROM (SELECT 1) ORDER BY 1
}
} [execsql {SELECT 'abc', zeroblob(1)}]
do_test fuzz-1.7 {
execsql {
SELECT ( SELECT zeroblob(1000) FROM (
SELECT * FROM (SELECT 'first') ORDER BY NOT 'in')
)
}
} [execsql {SELECT zeroblob(1000)}]
do_test fuzz-1.8 {
# Problems with opcode OP_ToText (did not account for MEM_Zero).
# Also MemExpandBlob() was marking expanded blobs as nul-terminated.
# They are not.
execsql {
SELECT CAST(zeroblob(1000) AS text);
}
} {{}}
do_test fuzz-1.9 {
# This was causing a NULL pointer dereference of Expr.pList.
execsql {
SELECT 1 FROM (SELECT * FROM sqlite_master WHERE random())
}
} {}
do_test fuzz-1.10 {
# Bug in calculation of Parse.ckOffset causing an assert()
# to fail. Probably harmless.
execsql {
SELECT coalesce(1, substr( 1, 2, length('in' IN (SELECT 1))))
}
} {1}
do_test fuzz-1.11 {
# The literals (A, B, C, D) are not important, they are just used
# to make the EXPLAIN output easier to read.
#
# The problem here is that the EXISTS(...) expression leaves an
# extra value on the VDBE stack. This is confusing the parent and
# leads to an assert() failure when OP_Insert encounters an integer
# when it expects a record blob.
#
# Update: Any query with (LIMIT 0) was leaking stack.
#
execsql {
SELECT 'A' FROM (SELECT 'B') ORDER BY EXISTS (
SELECT 'C' FROM (SELECT 'D' LIMIT 0)
)
}
} {A}
do_test fuzz-1.12.1 {
# Create a table with a single row.
execsql {
CREATE TABLE abc(b);
INSERT INTO abc VALUES('ABCDE');
}
# The following query was crashing. The later subquery (in the FROM)
# clause was flattened into the parent, but the code was not repairng
# the "b" reference in the other sub-query. When the query was executed,
# that "b" refered to a non-existant vdbe table-cursor.
#
execsql {
SELECT 1 IN ( SELECT b UNION SELECT 1 ) FROM (SELECT b FROM abc);
}
} {1}
do_test fuzz-1.12.2 {
# Clean up after the previous query.
execsql {
DROP TABLE abc;
}
} {}
do_test fuzz-1.13 {
# The problem here was that when there were more expressions in
# the ORDER BY list than the result-set list. The temporary b-tree
# used for sorting was being misconfigured in this case.
#
execsql {
SELECT 'abcd' UNION SELECT 'efgh' ORDER BY 1 ASC, 1 ASC;
}
} {abcd efgh}
do_test fuzz-1.14.1 {
execsql {
CREATE TABLE abc(a, b, c);
INSERT INTO abc VALUES(123, 456, 789);
}
# The [a] reference in the sub-select was causing a problem. Because
# the internal walkSelectExpr() function was not considering compound
# SELECT operators.
execsql {
SELECT 1 FROM abc
GROUP BY c HAVING EXISTS (SELECT a UNION SELECT 123);
}
} {1}
do_test fuzz-1.14.2 {
execsql {
DROP TABLE abc;
}
} {}
# Making sure previously discovered errors have been fixed.
#
do_test fuzz-1.15 {
execsql {
SELECT hex(CAST(zeroblob(1000) AS integer))
}
} {30}
do_test fuzz-1.16.1 {
execsql {
CREATE TABLE abc(a, b, c);
CREATE TABLE def(a, b, c);
CREATE TABLE ghi(a, b, c);
}
} {}
do_test fuzz-1.16.2 {
catchsql {
SELECT DISTINCT EXISTS(
SELECT 1
FROM (
SELECT C FROM (SELECT 1)
)
WHERE (SELECT c)
)
FROM abc
}
} {0 {}}
do_test fuzz-1.16.3 {
catchsql {
SELECT DISTINCT substr(-456 ISNULL,zeroblob(1000), EXISTS(
SELECT DISTINCT EXISTS(
SELECT DISTINCT b FROM abc
ORDER BY EXISTS (
SELECT DISTINCT 2147483647 UNION ALL SELECT -2147483648
) ASC
)
FROM (
SELECT c, c FROM (
SELECT 456, 'injection' ORDER BY 56.1 ASC, -56.1 DESC
)
)
GROUP BY (SELECT ALL (SELECT DISTINCT 'hardware'))
HAVING (
SELECT DISTINCT c
FROM (
SELECT ALL -2147483648, 'experiments'
ORDER BY -56.1 ASC, -56.1 DESC
)
GROUP BY (SELECT DISTINCT 456) IN
(SELECT DISTINCT 'injection') NOT IN (SELECT ALL -456)
HAVING EXISTS (
SELECT ALL 'injection'
)
)
UNION ALL
SELECT a IN (
SELECT -2147483647
UNION ALL
SELECT ALL 'injection'
)
FROM sqlite_master
) -- end EXISTS
) /* end SUBSTR() */, c NOTNULL ISNULL
FROM abc
ORDER BY CAST(-56.1 AS blob) ASC
}
} {0 {}}
do_test fuzz-1.16.4 {
execsql {
DROP TABLE abc; DROP TABLE def; DROP TABLE ghi;
}
} {}
do_test fuzz-1.17 {
catchsql {
SELECT 'hardware', 56.1 NOTNULL, random()&0
FROM (
SELECT ALL lower(~ EXISTS (
SELECT 1 NOT IN (SELECT ALL 1)
)), CAST(456 AS integer), -2147483647
FROM (
SELECT DISTINCT -456, CAST(1 AS integer) ISNULL
FROM (SELECT ALL 2147483647, typeof(2147483649))
)
)
GROUP BY CAST(CAST('experiments' AS blob) AS blob)
HAVING random()
}
} {0 {hardware 1 0}}
do_test fuzz-1.18 {
catchsql {
SELECT -2147483649 << upper('fault' NOT IN (
SELECT ALL (
SELECT ALL -1
ORDER BY -2147483649
LIMIT (
SELECT ALL (
SELECT 0 EXCEPT SELECT DISTINCT 'experiments' ORDER BY 1 ASC
)
)
OFFSET EXISTS (
SELECT ALL
(SELECT ALL -2147483648) NOT IN (
SELECT ALL 123456789.1234567899
) IN (SELECT 2147483649)
FROM sqlite_master
) NOT IN (SELECT ALL 'The')
)
))
}
} {0 -4294967298}
# At one point the following INSERT statement caused an assert() to fail.
#
do_test fuzz-1.19 {
execsql { CREATE TABLE t1(a) }
catchsql {
INSERT INTO t1 VALUES(
CASE WHEN NULL THEN NULL ELSE ( SELECT 0 ORDER BY 456 ) END
)
}
} {1 {1st ORDER BY term out of range - should be between 1 and 1}}
do_test fuzz-1.20 {
execsql { DROP TABLE t1 }
} {}
#----------------------------------------------------------------
# Test some fuzzily generated expressions.
#
do_fuzzy_test fuzz-2 -template { SELECT [Expr] }
do_test fuzz-3.1 {
execsql {
CREATE TABLE abc(a, b, c);
CREATE TABLE def(a, b, c);
CREATE TABLE ghi(a, b, c);
}
} {}
set ::TableList [list abc def ghi]
#----------------------------------------------------------------
# Test some fuzzily generated SELECT statements.
#
do_fuzzy_test fuzz-3.2 -template {[Select]}
#----------------------------------------------------------------
# Insert a small amount of data into the database and then run
# some more generated SELECT statements.
#
do_test fuzz-4.1 {
execsql {
INSERT INTO abc VALUES(1, 2, 3);
INSERT INTO abc VALUES(4, 5, 6);
INSERT INTO abc VALUES(7, 8, 9);
INSERT INTO def VALUES(1, 2, 3);
INSERT INTO def VALUES(4, 5, 6);
INSERT INTO def VALUES(7, 8, 9);
INSERT INTO ghi VALUES(1, 2, 3);
INSERT INTO ghi VALUES(4, 5, 6);
INSERT INTO ghi VALUES(7, 8, 9);
CREATE INDEX abc_i ON abc(a, b, c);
CREATE INDEX def_i ON def(c, a, b);
CREATE INDEX ghi_i ON ghi(b, c, a);
}
} {}
do_fuzzy_test fuzz-4.2 -template {[Select]}
#----------------------------------------------------------------
# Test some fuzzy INSERT statements:
#
do_test fuzz-5.1 {execsql BEGIN} {}
do_fuzzy_test fuzz-5.2 -template {[Insert]} -errorlist table
integrity_check fuzz-5.2.integrity
do_test fuzz-5.3 {execsql COMMIT} {}
integrity_check fuzz-5.4.integrity
#----------------------------------------------------------------
# Now that there is data in the database, run some more SELECT
# statements
#
set ::ColumnList [list a b c]
set E {{no such col} {ambiguous column name}}
do_fuzzy_test fuzz-6.1 -template {[Select]} -errorlist $E
#----------------------------------------------------------------
# Run some SELECTs, INSERTs, UPDATEs and DELETEs in a transaction.
#
set E {{no such col} {ambiguous column name} {table}}
do_test fuzz-7.1 {execsql BEGIN} {}
do_fuzzy_test fuzz-7.2 -template {[Statement]} -errorlist $E
integrity_check fuzz-7.3.integrity
do_test fuzz-7.4 {execsql COMMIT} {}
integrity_check fuzz-7.5.integrity
#----------------------------------------------------------------
# Many CREATE and DROP TABLE statements:
#
set E [list table duplicate {no such col} {ambiguous column name} {use DROP}]
do_fuzzy_test fuzz-8.1 -template {[CreateOrDropTableOrView]} -errorlist $E
close $::log
finish_test