xref: /sqlite-3.40.0/test/lock2.test (revision 31f98fc8) 
1# 2001 September 15
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.  The
12# focus of this script is database locks between competing processes.
13#
14# $Id: lock2.test,v 1.11 2009/05/01 10:55:34 danielk1977 Exp $
15
16
17set testdir [file dirname $argv0]
18source $testdir/tester.tcl
19source $testdir/lock_common.tcl
20
21
22# Simple locking test case:
23#
24# lock2-1.1: Connect a second process to the database.
25# lock2-1.2: Establish a RESERVED lock with this process.
26# lock2-1.3: Get a SHARED lock with the second process.
27# lock2-1.4: Try for a RESERVED lock with process 2. This fails.
28# lock2-1.5: Try to upgrade the first process to EXCLUSIVE, this fails so
29#            it gets PENDING.
30# lock2-1.6: Release the SHARED lock held by the second process.
31# lock2-1.7: Attempt to reaquire a SHARED lock with the second process.
32#            this fails due to the PENDING lock.
33# lock2-1.8: Ensure the first process can now upgrade to EXCLUSIVE.
34#
35do_test lock2-1.1 {
36  set ::tf1 [launch_testfixture]
37  testfixture $::tf1 {
38    sqlite3 db test.db -key xyzzy
39    db eval {select * from sqlite_master}
40  }
41} {}
42do_test lock2-1.1.1 {
43  execsql {pragma lock_status}
44} {main unlocked temp closed}
45sqlite3_soft_heap_limit 0
46do_test lock2-1.2 {
47  execsql {
48    BEGIN;
49    CREATE TABLE abc(a, b, c);
50  }
51} {}
52do_test lock2-1.3 {
53  testfixture $::tf1 {
54    db eval {
55      BEGIN;
56      SELECT * FROM sqlite_master;
57    }
58  }
59} {}
60do_test lock2-1.4 {
61  testfixture $::tf1 {
62    db eval {
63      CREATE TABLE def(d, e, f)
64    }
65  }
66} {database is locked}
67do_test lock2-1.5 {
68  catchsql {
69    COMMIT;
70  }
71} {1 {database is locked}}
72do_test lock2-1.6 {
73  testfixture $::tf1 {
74    db eval {
75      SELECT * FROM sqlite_master;
76      COMMIT;
77    }
78  }
79} {}
80do_test lock2-1.7 {
81  testfixture $::tf1 {
82    db eval {
83      BEGIN;
84      SELECT * FROM sqlite_master;
85    }
86  }
87} {database is locked}
88do_test lock2-1.8 {
89  catchsql {
90    COMMIT;
91  }
92} {0 {}}
93do_test lock2-1.9 {
94  execsql {
95    SELECT * FROM sqlite_master;
96  }
97} "table abc abc [expr $AUTOVACUUM?3:2] {CREATE TABLE abc(a, b, c)}"
98do_test lock2-1.10 {
99  testfixture $::tf1 {
100    db eval {
101      SELECT * FROM sqlite_master;
102    }
103  }
104} "table abc abc [expr $AUTOVACUUM?3:2] {CREATE TABLE abc(a, b, c)}"
105
106catch {testfixture $::tf1 {db close}}
107catch {close $::tf1}
108sqlite3_soft_heap_limit $soft_limit
109
110finish_test
111