1# 2004 December 07 2# 3# The author disclaims copyright to this source code. In place of 4# a legal notice, here is a blessing: 5# 6# May you do good and not evil. 7# May you find forgiveness for yourself and forgive others. 8# May you share freely, never taking more than you give. 9# 10#*********************************************************************** 11# This file implements regression tests for SQLite library. 12# 13# This file implements tests to make sure expression of an INSERT 14# and UPDATE statement are only evaluated once. See ticket #980. 15# If an expression uses a function that has side-effects or which 16# is not deterministic (ex: random()) then we want to make sure 17# that the same evaluation occurs for the actual INSERT/UPDATE and 18# for the NEW.* fields of any triggers that fire. 19# 20# $Id: trigger6.test,v 1.2 2005/05/05 11:04:50 drh Exp $ 21 22set testdir [file dirname $argv0] 23source $testdir/tester.tcl 24ifcapable {!trigger} { 25 finish_test 26 return 27} 28 29do_test trigger6-1.1 { 30 execsql { 31 CREATE TABLE t1(x, y); 32 CREATE TABLE log(a, b, c); 33 CREATE TRIGGER r1 BEFORE INSERT ON t1 BEGIN 34 INSERT INTO log VALUES(1, new.x, new.y); 35 END; 36 CREATE TRIGGER r2 BEFORE UPDATE ON t1 BEGIN 37 INSERT INTO log VALUES(2, new.x, new.y); 38 END; 39 } 40 set ::trigger6_cnt 0 41 proc trigger6_counter {args} { 42 incr ::trigger6_cnt 43 return $::trigger6_cnt 44 } 45 db function counter trigger6_counter 46 execsql { 47 INSERT INTO t1 VALUES(1,counter()); 48 SELECT * FROM t1; 49 } 50} {1 1} 51do_test trigger6-1.2 { 52 execsql { 53 SELECT * FROM log; 54 } 55} {1 1 1} 56do_test trigger6-1.3 { 57 execsql { 58 DELETE FROM t1; 59 DELETE FROM log; 60 INSERT INTO t1 VALUES(2,counter(2,3)+4); 61 SELECT * FROM t1; 62 } 63} {2 6} 64do_test trigger6-1.4 { 65 execsql { 66 SELECT * FROM log; 67 } 68} {1 2 6} 69do_test trigger6-1.5 { 70 execsql { 71 DELETE FROM log; 72 UPDATE t1 SET y=counter(5); 73 SELECT * FROM t1; 74 } 75} {2 3} 76do_test trigger6-1.6 { 77 execsql { 78 SELECT * FROM log; 79 } 80} {2 2 3} 81 82finish_test 83