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|    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  |  | 
|   16 set testdir [file dirname $argv0] |  | 
|   17 source $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 # |  | 
|   25 do_test pcache-1.1 { |  | 
|   26   db close |  | 
|   27   pcache_stats |  | 
|   28 } {current 0 max 0 min 0 recyclable 0} |  | 
|   29  |  | 
|   30 do_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  |  | 
|   39 do_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  |  | 
|   51 do_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  |  | 
|   61 do_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  |  | 
|   67 do_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 # |  | 
|   79 do_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  |  | 
|   96 do_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 # |  | 
|  108 do_test pcache-1.8 { |  | 
|  109   execsql {ROLLBACK} db2 |  | 
|  110   pcache_stats |  | 
|  111 } {current 23 max 22 min 20 recyclable 0} |  | 
|  112  |  | 
|  113 do_test pcache-1.9 { |  | 
|  114   execsql COMMIT |  | 
|  115   pcache_stats |  | 
|  116 } {current 22 max 22 min 20 recyclable 22} |  | 
|  117  |  | 
|  118 do_test pcache-1.10 { |  | 
|  119   db2 close |  | 
|  120   pcache_stats |  | 
|  121 } {current 12 max 12 min 10 recyclable 12} |  | 
|  122  |  | 
|  123 do_test pcache-1.11 { |  | 
|  124   execsql { PRAGMA cache_size = 20 } |  | 
|  125   pcache_stats |  | 
|  126 } {current 12 max 20 min 10 recyclable 12} |  | 
|  127  |  | 
|  128 do_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  |  | 
|  143 do_test pcache-1.13 { |  | 
|  144   execsql { PRAGMA cache_size = 15 } |  | 
|  145   pcache_stats |  | 
|  146 } {current 15 max 15 min 10 recyclable 15} |  | 
|  147  |  | 
|  148 do_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  |  | 
|  154 do_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  |  | 
|  169 finish_test |  | 
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