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      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 
     22 set testdir [file dirname $argv0]
     23 source $testdir/tester.tcl
     24 ifcapable {!trigger} {
     25   finish_test
     26   return
     27 }
     28 
     29 do_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}
     51 do_test trigger6-1.2 {
     52   execsql {
     53     SELECT * FROM log;
     54   }
     55 } {1 1 1}
     56 do_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}
     64 do_test trigger6-1.4 {
     65   execsql {
     66     SELECT * FROM log;
     67   }
     68 } {1 2 6}
     69 do_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}
     76 do_test trigger6-1.6 {
     77   execsql {
     78     SELECT * FROM log;
     79   }
     80 } {2 2 3}
     81 
     82 finish_test
     83