xref: /sqlite-3.40.0/test/lock2.test (revision e264d983) 
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 "sqlite3_test_control_pending_byte $::sqlite_pending_byte"
38  testfixture $::tf1 {
39    sqlite3 db test.db -key xyzzy
40    db eval {select * from sqlite_master}
41  }
42} {}
43do_test lock2-1.1.1 {
44  execsql {pragma lock_status}
45} {main unlocked temp closed}
46sqlite3_soft_heap_limit 0
47do_test lock2-1.2 {
48  execsql {
49    BEGIN;
50    CREATE TABLE abc(a, b, c);
51  }
52} {}
53do_test lock2-1.3 {
54  testfixture $::tf1 {
55    db eval {
56      BEGIN;
57      SELECT * FROM sqlite_master;
58    }
59  }
60} {}
61do_test lock2-1.4 {
62  testfixture $::tf1 {
63    db eval {
64      CREATE TABLE def(d, e, f)
65    }
66  }
67} {database is locked}
68do_test lock2-1.5 {
69  catchsql {
70    COMMIT;
71  }
72} {1 {database is locked}}
73do_test lock2-1.6 {
74  testfixture $::tf1 {
75    db eval {
76      SELECT * FROM sqlite_master;
77      COMMIT;
78    }
79  }
80} {}
81do_test lock2-1.7 {
82  testfixture $::tf1 {
83    db eval {
84      BEGIN;
85      SELECT * FROM sqlite_master;
86    }
87  }
88} {database is locked}
89do_test lock2-1.8 {
90  catchsql {
91    COMMIT;
92  }
93} {0 {}}
94do_test lock2-1.9 {
95  execsql {
96    SELECT * FROM sqlite_master;
97  }
98} "table abc abc [expr $AUTOVACUUM?3:2] {CREATE TABLE abc(a, b, c)}"
99do_test lock2-1.10 {
100  testfixture $::tf1 {
101    db eval {
102      SELECT * FROM sqlite_master;
103    }
104  }
105} "table abc abc [expr $AUTOVACUUM?3:2] {CREATE TABLE abc(a, b, c)}"
106
107catch {testfixture $::tf1 {db close}}
108catch {close $::tf1}
109sqlite3_soft_heap_limit $soft_limit
110
111finish_test
112