xref: /sqlite-3.40.0/test/sync2.test (revision f5da7dbb) 
1# 2017 March 16
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# Specificly, it tests that "PRAGMA synchronous" appears to work.
14#
15
16set testdir [file dirname $argv0]
17source $testdir/tester.tcl
18set testprefix sync2
19
20#
21# These tests are only applicable when pager pragma are
22# enabled. Also, since every test uses an ATTACHed database, they
23# are only run when ATTACH is enabled.
24#
25ifcapable !pager_pragmas||!attach {
26  finish_test
27  return
28}
29
30proc execsql_sync {sql} {
31  set s $::sqlite_sync_count
32  set res [execsql $sql]
33  concat [expr $::sqlite_sync_count-$s] $res
34}
35
36proc do_execsql_sync_test {tn sql res} {
37  uplevel [list do_test $tn [list execsql_sync $sql] [list {*}$res]]
38}
39
40#-----------------------------------------------------------------------
41# Tests for journal mode.
42#
43sqlite3 db test.db
44do_execsql_test 1.0 {
45  CREATE TABLE t1(a, b);
46  INSERT INTO t1 VALUES(1, 2);
47}
48
49do_execsql_sync_test 1.1 { INSERT INTO t1 VALUES(3, 4) } 4
50
51# synchronous=normal. So, 1 sync on the directory, 1 on the journal, 1
52# on the db file. 3 in total.
53do_execsql_test      1.2.1 { PRAGMA main.synchronous = NORMAL }
54do_execsql_test      1.2.2 { PRAGMA main.synchronous }     1
55do_execsql_sync_test 1.2.3 { INSERT INTO t1 VALUES(5, 6) } 3
56
57# synchronous=off. No syncs.
58do_execsql_test      1.3.1 { PRAGMA main.synchronous = OFF }
59do_execsql_test      1.3.2 { PRAGMA main.synchronous }     0
60do_execsql_sync_test 1.3.3 { INSERT INTO t1 VALUES(7, 8) } 0
61
62# synchronous=full, journal_mode=delete. So, 1 sync on the directory,
63# 2 on the journal, 1 on the db file. 4 in total.
64do_execsql_test      1.4.1 { PRAGMA main.synchronous = FULL }
65do_execsql_test      1.4.2 { PRAGMA main.synchronous }      2
66do_execsql_sync_test 1.4.3 { INSERT INTO t1 VALUES(9, 10) } 4
67
68#-----------------------------------------------------------------------
69# Tests for wal mode.
70#
71do_execsql_test      1.5 { PRAGMA journal_mode = wal } {wal}
72
73# sync=full, journal_mode=wal. One sync on the directory, two on the
74# wal file.
75do_execsql_sync_test 1.6 { INSERT INTO t1 VALUES(11, 12) } 3
76
77# One sync on the wal file.
78do_execsql_sync_test 1.7 { INSERT INTO t1 VALUES(13, 14) } 1
79
80# No syncs.
81do_execsql_test      1.8.1 { PRAGMA main.synchronous = NORMAL }
82do_execsql_test      1.8.2 { PRAGMA main.synchronous }          1
83do_execsql_sync_test 1.8.3 { INSERT INTO t1 VALUES(15, 16) }    0
84
85# One sync on wal file, one on the db file.
86do_execsql_sync_test 1.9   { PRAGMA wal_checkpoint }  {2 0 3 3}
87
88# No syncs.
89do_execsql_test      1.10.1 { PRAGMA main.synchronous = OFF }
90do_execsql_test      1.10.2 { PRAGMA main.synchronous }          0
91do_execsql_sync_test 1.10.3 { INSERT INTO t1 VALUES(17, 18) }    0
92
93#-----------------------------------------------------------------------
94# Tests for the compile time settings SQLITE_DEFAULT_SYNCHRONOUS and
95# SQLITE_DEFAULT_WAL_SYNCHRONOUS. These tests only run if the former
96# is set to "2" and the latter to "1". This is not the default, but
97# it is currently the recommended configuration.
98#
99#   https://sqlite.org/compile.html#recommended_compile_time_options
100#
101if {$SQLITE_DEFAULT_SYNCHRONOUS==2 && $SQLITE_DEFAULT_WAL_SYNCHRONOUS==1} {
102
103  db close
104  sqlite3 db test.db
105
106  # Wal mode, sync=normal. The first transaction does one sync on directory,
107  # one on the wal file. The second does no syncs.
108  do_execsql_sync_test 1.11.1 { INSERT INTO t1 VALUES(19, 20) } 2
109  do_execsql_sync_test 1.11.2 { INSERT INTO t1 VALUES(21, 22) } 0
110  do_execsql_test 1.11.3      { PRAGMA main.synchronous }       1
111
112  # One sync on wal file, one on the db file.
113  do_execsql_sync_test 1.12   { PRAGMA wal_checkpoint }  {2 0 2 2}
114
115  # First transaction syncs the wal file once, the second not at all.
116  # one on the wal file. The second does no syncs.
117  do_execsql_sync_test 1.13.1 { INSERT INTO t1 VALUES(22, 23) } 1
118  do_execsql_sync_test 1.13.2 { INSERT INTO t1 VALUES(24, 25) } 0
119
120  do_execsql_test 1.14 { PRAGMA journal_mode = delete } {delete}
121
122  # Delete mode, sync=full. The first transaction does one sync on
123  # directory, two on the journal file, one on the db. The second does
124  # the same.
125  do_execsql_sync_test 1.15.1 { INSERT INTO t1 VALUES(26, 27) } 4
126  do_execsql_sync_test 1.15.2 { INSERT INTO t1 VALUES(28, 29) } 4
127  do_execsql_test 1.15.3      { PRAGMA main.synchronous }       2
128
129  # Switch back to wal mode.
130  do_execsql_test 1.16 { PRAGMA journal_mode = wal } {wal}
131
132  do_execsql_sync_test 1.17.1 { INSERT INTO t1 VALUES(30, 31) } 2
133  do_execsql_sync_test 1.17.2 { INSERT INTO t1 VALUES(32, 33) } 0
134  do_execsql_test 1.17.3      { PRAGMA main.synchronous }       1
135
136  # Now set synchronous=off, then switch back to delete mode. Check
137  # that the db handle is still using synchronous=off.
138  do_execsql_test 1.18.3      { PRAGMA main.synchronous=off }
139  do_execsql_test 1.18 { PRAGMA journal_mode = delete } {delete}
140
141  do_execsql_sync_test 1.19.1 { INSERT INTO t1 VALUES(34, 35) } 0
142  do_execsql_sync_test 1.19.2 { INSERT INTO t1 VALUES(36, 37) } 0
143  do_execsql_test 1.19.3      { PRAGMA main.synchronous }       0
144
145  # Close and reopen the db. Back to synchronous=normal.
146  db close
147  sqlite3 db test.db
148  do_execsql_sync_test 1.20.1 { INSERT INTO t1 VALUES(38, 39) } 4
149  do_execsql_sync_test 1.20.2 { INSERT INTO t1 VALUES(40, 41) } 4
150  do_execsql_test 1.20.3      { PRAGMA main.synchronous }       2
151}
152
153finish_test
154