1 # 2007 Oct 3 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 # 12 # This file is to test that ticket #2767 has been fixed. 13 # Ticket #2767 is for a VDBE stack overflow on BEFORE 14 # triggers that run RAISE(IGNORE). 15 # 16 # $Id: tkt2767.test,v 1.3 2009/04/07 14:14:23 danielk1977 Exp $ 17 # 18 19 set testdir [file dirname $argv0] 20 source $testdir/tester.tcl 21 22 ifcapable !trigger { finish_test ; return } 23 24 do_test tkt2767-1.1 { 25 execsql { 26 -- Construct a table with many rows of data 27 CREATE TABLE t1(x); 28 INSERT INTO t1 VALUES(1); 29 INSERT INTO t1 VALUES(2); 30 INSERT INTO t1 SELECT x+2 FROM t1; 31 INSERT INTO t1 SELECT x+4 FROM t1; 32 INSERT INTO t1 SELECT x+8 FROM t1; 33 INSERT INTO t1 SELECT x+16 FROM t1; 34 35 -- BEFORE triggers that invoke raise(ignore). The effect of 36 -- these triggers should be to make INSERTs, UPDATEs, and DELETEs 37 -- into no-ops. 38 CREATE TRIGGER r1 BEFORE UPDATE ON t1 BEGIN 39 SELECT raise(ignore); 40 END; 41 CREATE TRIGGER r2 BEFORE DELETE ON t1 BEGIN 42 SELECT raise(ignore); 43 END; 44 CREATE TRIGGER r3 BEFORE INSERT ON t1 BEGIN 45 SELECT raise(ignore); 46 END; 47 48 -- Verify the table content 49 SELECT count(*), sum(x) FROM t1; 50 } 51 } {32 528} 52 53 # Try to delete all elements of the table. This will invoke the 54 # DELETE trigger 32 times, which should overflow the VDBE stack if 55 # the problem of #2767 is not fixed. If the problem is fixed, all 56 # the deletes should be no-ops so the table should remain unchanged. 57 # 58 do_test tkt2767-1.2 { 59 execsql { 60 DELETE FROM t1 WHERE x>0; 61 SELECT count(*), sum(x) FROM t1; 62 } 63 } {32 528} 64 65 # Try to update all elements of the table. This will invoke the 66 # UPDATE trigger 32 times, which should overflow the VDBE stack if 67 # the problem of #2767 is not fixed. If the problem is fixed, all 68 # the updates should be no-ops so the table should remain unchanged. 69 # 70 do_test tkt2767-1.3 { 71 execsql { 72 UPDATE t1 SET x=x+1; 73 SELECT count(*), sum(x) FROM t1; 74 } 75 } {32 528} 76 77 # Invoke the insert trigger. The insert trigger was working 78 # even prior to the fix of #2767. But it seems good to go ahead 79 # and verify that it works. 80 # 81 do_test tkt2767-1.4 { 82 execsql { 83 INSERT INTO t1 SELECT x+32 FROM t1; 84 SELECT count(*), sum(x) FROM t1; 85 } 86 } {32 528} 87 88 89 90 finish_test 91
