1# 2008 August 29 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# 12# This file is focused on testing the pcache module. 13# 14# $Id: pcache.test,v 1.5 2009/05/08 06:52:48 danielk1977 Exp $ 15 16set testdir [file dirname $argv0] 17source $testdir/tester.tcl 18 19# Do not use a codec for tests in this file, as the database file is 20# manipulated directly using tcl scripts (using the [hexio_write] command). 21# 22do_not_use_codec 23 24# The pcache module limits the number of pages available to purgeable 25# caches to the sum of the 'cache_size' values for the set of open 26# caches. This block of tests, pcache-1.*, test that the library behaves 27# corrctly when it is forced to exceed this limit. 28# 29do_test pcache-1.1 { 30 db close 31 pcache_stats 32} {current 0 max 0 min 0 recyclable 0} 33 34do_test pcache-1.2 { 35 sqlite3 db test.db 36 execsql { 37 PRAGMA cache_size=12; 38 PRAGMA auto_vacuum=0; 39 } 40 pcache_stats 41} {current 1 max 12 min 10 recyclable 1} 42 43do_test pcache-1.3 { 44 execsql { 45 BEGIN; 46 CREATE TABLE t1(a, b, c); 47 CREATE TABLE t2(a, b, c); 48 CREATE TABLE t3(a, b, c); 49 CREATE TABLE t4(a, b, c); 50 CREATE TABLE t5(a, b, c); 51 } 52 pcache_stats 53} {current 6 max 12 min 10 recyclable 0} 54 55do_test pcache-1.4 { 56 execsql { 57 CREATE TABLE t6(a, b, c); 58 CREATE TABLE t7(a, b, c); 59 CREATE TABLE t8(a, b, c); 60 CREATE TABLE t9(a, b, c); 61 } 62 pcache_stats 63} {current 10 max 12 min 10 recyclable 0} 64 65do_test pcache-1.5 { 66 sqlite3 db2 test.db 67 execsql "PRAGMA cache_size=10" db2 68 pcache_stats 69} {current 11 max 22 min 20 recyclable 1} 70 71do_test pcache-1.6.1 { 72 execsql { 73 BEGIN; 74 SELECT * FROM sqlite_master; 75 } db2 76 pcache_stats 77} {current 11 max 22 min 20 recyclable 0} 78 79# At this point connection db2 has a read lock on the database file and a 80# single pinned page in its cache. Connection [db] is holding 10 dirty 81# pages. It cannot recycle them because of the read lock held by db2. 82# 83do_test pcache-1.6.2 { 84 execsql { 85 CREATE INDEX i1 ON t1(a, b); 86 CREATE INDEX i2 ON t2(a, b); 87 CREATE INDEX i3 ON t3(a, b); 88 CREATE INDEX i4 ON t4(a, b); 89 CREATE INDEX i5 ON t5(a, b); 90 CREATE INDEX i6 ON t6(a, b); 91 CREATE INDEX i7 ON t7(a, b); 92 CREATE INDEX i8 ON t8(a, b); 93 CREATE INDEX i9 ON t9(a, b); 94 CREATE INDEX i10 ON t9(a, b); 95 CREATE INDEX i11 ON t9(a, b); 96 } 97 pcache_stats 98} {current 23 max 22 min 20 recyclable 0} 99 100do_test pcache-1.7 { 101 execsql { 102 CREATE TABLE t10(a, b, c); 103 } 104 pcache_stats 105} {current 24 max 22 min 20 recyclable 0} 106 107# Rolling back the transaction held by db2 at this point releases a pinned 108# page. Because the number of allocated pages is greater than the 109# configured maximum, this page should be freed immediately instead of 110# recycled. 111# 112do_test pcache-1.8 { 113 execsql {ROLLBACK} db2 114 pcache_stats 115} {current 23 max 22 min 20 recyclable 0} 116 117do_test pcache-1.9 { 118 execsql COMMIT 119 pcache_stats 120} {current 22 max 22 min 20 recyclable 22} 121 122do_test pcache-1.10 { 123 db2 close 124 pcache_stats 125} {current 12 max 12 min 10 recyclable 12} 126 127do_test pcache-1.11 { 128 execsql { PRAGMA cache_size = 20 } 129 pcache_stats 130} {current 12 max 20 min 10 recyclable 12} 131 132do_test pcache-1.12 { 133 execsql { 134 SELECT * FROM t1 ORDER BY a; SELECT * FROM t1; 135 SELECT * FROM t2 ORDER BY a; SELECT * FROM t2; 136 SELECT * FROM t3 ORDER BY a; SELECT * FROM t3; 137 SELECT * FROM t4 ORDER BY a; SELECT * FROM t4; 138 SELECT * FROM t5 ORDER BY a; SELECT * FROM t5; 139 SELECT * FROM t6 ORDER BY a; SELECT * FROM t6; 140 SELECT * FROM t7 ORDER BY a; SELECT * FROM t7; 141 SELECT * FROM t8 ORDER BY a; SELECT * FROM t8; 142 SELECT * FROM t9 ORDER BY a; SELECT * FROM t9; 143 } 144 pcache_stats 145} {current 19 max 20 min 10 recyclable 19} 146 147do_test pcache-1.13 { 148 execsql { PRAGMA cache_size = 15 } 149 pcache_stats 150} {current 15 max 15 min 10 recyclable 15} 151 152do_test pcache-1.14 { 153 hexio_write test.db 24 [hexio_render_int32 1000] 154 execsql { SELECT * FROM sqlite_master } 155 pcache_stats 156} {current 2 max 15 min 10 recyclable 2} 157 158do_test pcache-1.15 { 159 execsql { 160 SELECT * FROM t1 ORDER BY a; SELECT * FROM t1; 161 SELECT * FROM t2 ORDER BY a; SELECT * FROM t2; 162 SELECT * FROM t3 ORDER BY a; SELECT * FROM t3; 163 SELECT * FROM t4 ORDER BY a; SELECT * FROM t4; 164 SELECT * FROM t5 ORDER BY a; SELECT * FROM t5; 165 SELECT * FROM t6 ORDER BY a; SELECT * FROM t6; 166 SELECT * FROM t7 ORDER BY a; SELECT * FROM t7; 167 SELECT * FROM t8 ORDER BY a; SELECT * FROM t8; 168 SELECT * FROM t9 ORDER BY a; SELECT * FROM t9; 169 } 170 pcache_stats 171} {current 14 max 15 min 10 recyclable 14} 172 173finish_test 174