|
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 1.2 2008/07/12 14:52:21 drh Exp $ |
|
17 # |
|
18 |
|
19 set testdir [file dirname $argv0] |
|
20 source $testdir/tester.tcl |
|
21 |
|
22 do_test tkt2767-1.1 { |
|
23 execsql { |
|
24 -- Construct a table with many rows of data |
|
25 CREATE TABLE t1(x); |
|
26 INSERT INTO t1 VALUES(1); |
|
27 INSERT INTO t1 VALUES(2); |
|
28 INSERT INTO t1 SELECT x+2 FROM t1; |
|
29 INSERT INTO t1 SELECT x+4 FROM t1; |
|
30 INSERT INTO t1 SELECT x+8 FROM t1; |
|
31 INSERT INTO t1 SELECT x+16 FROM t1; |
|
32 |
|
33 -- BEFORE triggers that invoke raise(ignore). The effect of |
|
34 -- these triggers should be to make INSERTs, UPDATEs, and DELETEs |
|
35 -- into no-ops. |
|
36 CREATE TRIGGER r1 BEFORE UPDATE ON t1 BEGIN |
|
37 SELECT raise(ignore); |
|
38 END; |
|
39 CREATE TRIGGER r2 BEFORE DELETE ON t1 BEGIN |
|
40 SELECT raise(ignore); |
|
41 END; |
|
42 CREATE TRIGGER r3 BEFORE INSERT ON t1 BEGIN |
|
43 SELECT raise(ignore); |
|
44 END; |
|
45 |
|
46 -- Verify the table content |
|
47 SELECT count(*), sum(x) FROM t1; |
|
48 } |
|
49 } {32 528} |
|
50 |
|
51 # Try to delete all elements of the table. This will invoke the |
|
52 # DELETE trigger 32 times, which should overflow the VDBE stack if |
|
53 # the problem of #2767 is not fixed. If the problem is fixed, all |
|
54 # the deletes should be no-ops so the table should remain unchanged. |
|
55 # |
|
56 do_test tkt2767-1.2 { |
|
57 execsql { |
|
58 DELETE FROM t1 WHERE x>0; |
|
59 SELECT count(*), sum(x) FROM t1; |
|
60 } |
|
61 } {32 528} |
|
62 |
|
63 # Try to update all elements of the table. This will invoke the |
|
64 # UPDATE trigger 32 times, which should overflow the VDBE stack if |
|
65 # the problem of #2767 is not fixed. If the problem is fixed, all |
|
66 # the updates should be no-ops so the table should remain unchanged. |
|
67 # |
|
68 do_test tkt2767-1.3 { |
|
69 execsql { |
|
70 UPDATE t1 SET x=x+1; |
|
71 SELECT count(*), sum(x) FROM t1; |
|
72 } |
|
73 } {32 528} |
|
74 |
|
75 # Invoke the insert trigger. The insert trigger was working |
|
76 # even prior to the fix of #2767. But it seems good to go ahead |
|
77 # and verify that it works. |
|
78 # |
|
79 do_test tkt2767-1.4 { |
|
80 execsql { |
|
81 INSERT INTO t1 SELECT x+32 FROM t1; |
|
82 SELECT count(*), sum(x) FROM t1; |
|
83 } |
|
84 } {32 528} |
|
85 |
|
86 |
|
87 |
|
88 finish_test |