wasCSharpSQLite – Blame information for rev 7
?pathlinks?
Rev | Author | Line No. | Line |
---|---|---|---|
1 | office | 1 | # 2011 February 21 |
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 verify that ticket [b72787b1a7] has been |
||
14 | # fixed. From the ticket: |
||
15 | # |
||
16 | # The sqlite3ExpirePreparedStatements routine marks all statements |
||
17 | # as expired. This includes statements that are not expired. |
||
18 | # |
||
19 | # Steps to reproduce: |
||
20 | # |
||
21 | # * Prepare a statement (A) |
||
22 | # * Alter the schema to invalidate cookie in A |
||
23 | # * Prepare a statement (B) |
||
24 | # * Run B and have A run as part of B |
||
25 | # * A will find a bad cookie and cause *all* statements |
||
26 | # to be expired including the currently running B by calling |
||
27 | # sqlite3ExpirePreparedStatements |
||
28 | # * When control returns to B it will then abort |
||
29 | # |
||
30 | # The bug is that sqlite3ExpirePreparedStatements expires all statements. |
||
31 | # Note that B was prepared after the schema change and hence is perfectly |
||
32 | # valid and then is marked as expired while running. |
||
33 | # |
||
34 | |||
35 | set testdir [file dirname $argv0] |
||
36 | source $testdir/tester.tcl |
||
37 | |||
38 | unset -nocomplain ::STMT |
||
39 | proc runsql {} { |
||
40 | db eval {CREATE TABLE IF NOT EXISTS t4(q)} |
||
41 | sqlite3_step $::STMT |
||
42 | set rc [sqlite3_column_int $::STMT 0] |
||
43 | sqlite3_reset $::STMT |
||
44 | return $rc |
||
45 | } |
||
46 | |||
47 | do_test tkt-b72787b1.1 { |
||
48 | db eval { |
||
49 | CREATE TABLE t1(x); |
||
50 | INSERT INTO t1 VALUES(1); |
||
51 | INSERT INTO t1 VALUES(2); |
||
52 | CREATE TABLE t2(y); |
||
53 | INSERT INTO t2 SELECT x+2 FROM t1; |
||
54 | INSERT INTO t2 SELECT x+4 FROM t1; |
||
55 | } |
||
56 | db func runsql ::runsql |
||
57 | set DB [sqlite3_connection_pointer db] |
||
58 | set sql {SELECT max(x) FROM t1} |
||
59 | set ::STMT [sqlite3_prepare_v2 $DB $sql -1 TAIL] |
||
60 | |||
61 | # The runsql() call on the second row of the first query will |
||
62 | # cause all $::STMT to hit an expired cookie. Prior to the fix |
||
63 | # for [b72787b1a7, the bad cookie would expire all statements, including |
||
64 | # the following compound SELECT, which would cause a fault when the |
||
65 | # second SELECT was reached. After the fix, the current statement |
||
66 | # continues to completion. |
||
67 | db eval { |
||
68 | SELECT CASE WHEN y=3 THEN y+100 WHEN y==4 THEN runsql()+200 |
||
69 | ELSE 300+y END FROM t2 |
||
70 | UNION ALL |
||
71 | SELECT * FROM t1; |
||
72 | } |
||
73 | } {103 202 305 306 1 2} |
||
74 | |||
75 | sqlite3_finalize $::STMT |
||
76 | |||
77 | finish_test |