1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
|
# 2018 August 28
#
# The author disclaims copyright to this source code. In place of
# a legal notice, here is a blessing:
#
# May you do good and not evil.
# May you find forgiveness for yourself and forgive others.
# May you share freely, never taking more than you give.
#
#***********************************************************************
# This file implements regression tests for SQLite library. The focus
# of this file is the sqlite3_snapshot_xxx() APIs.
#
set testdir [file dirname $argv0]
source $testdir/tester.tcl
ifcapable !snapshot {finish_test; return}
set testprefix snapshot4
# This test does not work with the inmemory_journal permutation. The reason
# is that each connection opened as part of this permutation executes
# "PRAGMA journal_mode=memory", which fails if the database is in wal mode
# and there are one or more existing connections.
if {[permutation]=="inmemory_journal"} {
finish_test
return
}
sqlite3 db2 test.db
do_execsql_test 1.0 {
PRAGMA cache_size = 10;
CREATE TABLE t1(a, b);
INSERT INTO t1 VALUES(1, randomblob(400));
PRAGMA journal_mode = wal;
WITH s(i) AS (
SELECT 2 UNION ALL SELECT i+1 FROM s WHERE i<100
)
INSERT INTO t1 SELECT i, randomblob(400) FROM s;
} {wal}
do_test 1.1 {
execsql {
BEGIN;
SELECT count(*) FROM t1;
}
} {100}
do_test 1.2 {
db2 eval {
SELECT count(*) FROM t1;
CREATE TABLE t2(x);
}
} {100}
do_test 1.3 {
set ::snap [sqlite3_snapshot_get_blob db main]
db2 eval { PRAGMA wal_checkpoint }
} {0 54 52}
do_test 1.4 {
execsql {
COMMIT;
SELECT * FROM sqlite_master;
BEGIN;
}
sqlite3_snapshot_open_blob db main $::snap
execsql {
SELECT count(*) FROM t1
}
} {100}
finish_test
|
