mirror of
https://github.com/berkeleydb/libdb.git
synced 2024-11-17 09:36:24 +00:00
75 lines
2.1 KiB
Text
75 lines
2.1 KiB
Text
# 2008 July 11
|
|
#
|
|
# 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.
|
|
#
|
|
# This file experiments with recursion using the "test_eval()" SQL function
|
|
# in order to make sure that SQLite is reentrant.
|
|
#
|
|
# $Id: eval.test,v 1.2 2008/10/13 10:37:50 danielk1977 Exp $
|
|
|
|
set testdir [file dirname $argv0]
|
|
source $testdir/tester.tcl
|
|
|
|
# Create a table to work with.
|
|
#
|
|
do_test eval-1.1 {
|
|
execsql {
|
|
CREATE TABLE t1(x INTEGER PRIMARY KEY);
|
|
INSERT INTO t1 VALUES(1);
|
|
INSERT INTO t1 VALUES(2);
|
|
INSERT INTO t1 SELECT x+2 FROM t1;
|
|
INSERT INTO t1 SELECT x+4 FROM t1;
|
|
INSERT INTO t1 SELECT x+8 FROM t1;
|
|
INSERT INTO t1 SELECT x+16 FROM t1;
|
|
INSERT INTO t1 SELECT x+32 FROM t1;
|
|
INSERT INTO t1 SELECT x+64 FROM t1;
|
|
INSERT INTO t1 SELECT x+128 FROM t1;
|
|
INSERT INTO t1 SELECT x+256 FROM t1;
|
|
SELECT count(*), max(x) FROM t1;
|
|
}
|
|
} {512 512}
|
|
do_test eval-1.2 {
|
|
execsql {
|
|
SELECT x, test_eval('SELECT max(x) FROM t1 WHERE x<' || x) FROM t1 LIMIT 5
|
|
}
|
|
} {1 {} 2 1 3 2 4 3 5 4}
|
|
|
|
# Delete a row out from under a read cursor in the middle of
|
|
# collecting the arguments for a single row in a result set.
|
|
# Verify that subsequent rows come out as NULL.
|
|
#
|
|
do_test eval-2.1 {
|
|
execsql {
|
|
CREATE TABLE t2(x,y);
|
|
INSERT INTO t2 SELECT x, x+1 FROM t1 WHERE x<5;
|
|
SELECT x, test_eval('DELETE FROM t2 WHERE x='||x), y FROM t2;
|
|
}
|
|
} {1 {} {} 2 {} {} 3 {} {} 4 {} {}}
|
|
do_test eval-2.2 {
|
|
execsql {
|
|
SELECT * FROM t2
|
|
}
|
|
} {}
|
|
|
|
# Modify a row while it is being read.
|
|
#
|
|
do_test eval-3.1 {
|
|
execsql {
|
|
INSERT INTO t2 SELECT x, x+1 FROM t1 WHERE x<5;
|
|
SELECT x, test_eval('UPDATE t2 SET y=y+100 WHERE x='||x), y FROM t2;
|
|
}
|
|
} {1 {} 102 2 {} 103 3 {} 104 4 {} 105}
|
|
|
|
do_test eval-4.1 {
|
|
execsql { SELECT test_eval('SELECT "abcdefghij"') }
|
|
} {abcdefghij}
|
|
|
|
finish_test
|