github.com/jdgcs/sqlite3@v1.12.1-0.20210908114423-bc5f96e4dd51/testdata/tcl/pcache2.test (about)

     1  # 2008 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  #
    12  # This file is focused on testing the pcache module.
    13  #
    14  # $Id: pcache2.test,v 1.5 2009/07/18 14:36:24 danielk1977 Exp $
    15  
    16  set testdir [file dirname $argv0]
    17  source $testdir/tester.tcl
    18  
    19  test_set_config_pagecache 0 0
    20  
    21  # Set up a pcache memory pool so that we can easily track how many
    22  # pages are being used for cache.
    23  #
    24  do_test pcache2-1.1 {
    25    db close
    26    sqlite3_reset_auto_extension
    27    sqlite3_shutdown
    28    sqlite3_config_pagecache 6000 100
    29    sqlite3_config singlethread
    30    sqlite3_initialize
    31    autoinstall_test_functions
    32    sqlite3_status SQLITE_STATUS_PAGECACHE_USED 1
    33    sqlite3_status SQLITE_STATUS_PAGECACHE_USED 0
    34  } {0 0 0}
    35  
    36  # Open up two database connections to separate files.
    37  #
    38  do_test pcache2-1.2 {
    39    forcedelete test.db test.db-journal
    40    sqlite3 db test.db
    41    db eval {PRAGMA cache_size=10; SELECT 1 FROM sqlite_master;}
    42    lindex [sqlite3_status SQLITE_STATUS_PAGECACHE_USED 0] 1
    43  } {2}
    44  do_test pcache2-1.3 {
    45    forcedelete test2.db test2.db-journal
    46    sqlite3 db2 test2.db
    47    db2 eval {PRAGMA cache_size=50; SELECT 1 FROM sqlite_master;}
    48    lindex [sqlite3_status SQLITE_STATUS_PAGECACHE_USED 0] 1
    49  } {4}
    50  
    51  
    52  # Make lots of changes on the first connection.  Verify that the
    53  # page cache usage does not grow to consume the page space set aside
    54  # for the second connection.
    55  #
    56  do_test pcache2-1.4 {
    57    db eval {
    58       CREATE TABLE t1(a,b);
    59       CREATE TABLE t2(x,y);
    60       INSERT INTO t1 VALUES(1, zeroblob(800));
    61       INSERT INTO t1 VALUES(2, zeroblob(800));
    62       INSERT INTO t2 SELECT * FROM t1;
    63       INSERT INTO t1 SELECT x+2, y FROM t2;
    64       INSERT INTO t2 SELECT a+10, b FROM t1;
    65       INSERT INTO t1 SELECT x+10, y FROM t2;
    66       INSERT INTO t2 SELECT a+100, b FROM t1;
    67       INSERT INTO t1 SELECT x+100, y FROM t2;
    68       INSERT INTO t2 SELECT a+1000, b FROM t1;
    69       INSERT INTO t1 SELECT x+1000, y FROM t2;
    70    }
    71    sqlite3_status SQLITE_STATUS_PAGECACHE_USED 0
    72  } {0 13 13}
    73  
    74  db close
    75  catch {db2 close}
    76  sqlite3_reset_auto_extension
    77  sqlite3_shutdown
    78  sqlite3_config_pagecache 0 0
    79  sqlite3_config serialized
    80  sqlite3_initialize
    81  autoinstall_test_functions
    82  
    83  test_restore_config_pagecache
    84  finish_test