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