gitlab.com/CoiaPrant/sqlite3@v1.19.1/testdata/tcl/lookaside.test (about)

     1  # 2008 August 01
     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  # Tests for the lookaside memory allocator.
    13  #
    14  # $Id: lookaside.test,v 1.10 2009/04/09 01:23:49 drh Exp $
    15  
    16  set testdir [file dirname $argv0]
    17  source $testdir/tester.tcl
    18  
    19  ifcapable !lookaside {
    20    finish_test
    21    return
    22  }
    23  
    24  # The tests in this file configure the lookaside allocator after a 
    25  # connection is opened. This will not work if there is any "presql"
    26  # configured (SQL run within the [sqlite3] wrapper in tester.tcl).
    27  if {[info exists ::G(perm:dbconfig)] && $::G(perm:dbconfig)!=""} {
    28    finish_test
    29    return
    30  }
    31  
    32  test_set_config_pagecache 0 0
    33  
    34  catch {db close}
    35  sqlite3_shutdown
    36  sqlite3_initialize
    37  autoinstall_test_functions
    38  
    39  sqlite3 db test.db
    40  db cache size 4
    41  
    42  # Make sure sqlite3_db_config() and sqlite3_db_status are working.
    43  #
    44  do_test lookaside-1.1 {
    45    catch {sqlite3_config_error db}
    46  } {0}
    47  
    48  do_test lookaside-1.2 {
    49    sqlite3_db_config_lookaside db 1 18 18
    50  } {0}
    51  do_test lookaside-1.3.1 {
    52    sqlite3_db_status db DBSTATUS_LOOKASIDE_USED 0
    53  } {0 0 0}
    54  do_test lookaside-1.3.2 {
    55    sqlite3_db_status db DBSTATUS_LOOKASIDE_HIT 0
    56  } {0 0 0}
    57  do_test lookaside-1.3.3 {
    58    sqlite3_db_status db DBSTATUS_LOOKASIDE_MISS_SIZE 0
    59  } {0 0 0}
    60  do_test lookaside-1.3.4 {
    61    sqlite3_db_status db DBSTATUS_LOOKASIDE_MISS_FULL 0
    62  } {0 0 0}
    63  
    64  do_test lookaside-1.4 {
    65    db eval {CREATE TABLE t1(w,x,y,z);}
    66    foreach {x y z} [sqlite3_db_status db DBSTATUS_LOOKASIDE_USED 0] break
    67    set p [lindex [sqlite3_db_status db DBSTATUS_LOOKASIDE_HIT 0] 2]
    68    set q [lindex [sqlite3_db_status db DBSTATUS_LOOKASIDE_MISS_SIZE 0] 2]
    69    set r [lindex [sqlite3_db_status db DBSTATUS_LOOKASIDE_MISS_FULL 0] 2]
    70    expr {$x==0 && $y<$z && $z==18 && $p>0 && $q>0 && $r>0}
    71  } {0}
    72  do_test lookaside-1.5 {
    73    foreach {x y z} [sqlite3_db_status db DBSTATUS_LOOKASIDE_USED 1] break
    74    expr {$x==0 && $y<$z && $z==18}
    75  } {0}
    76  do_test lookaside-1.6 {
    77    foreach {x y z} [sqlite3_db_status db DBSTATUS_LOOKASIDE_USED 0] break
    78    expr {$x==0 && $y==$z && $y<18}
    79  } {1}
    80  do_test lookaside-1.7 {
    81    db cache flush
    82    foreach {x y z} [sqlite3_db_status db DBSTATUS_LOOKASIDE_USED 0] break
    83    expr {$x==0 && $y==0 && $z<18}
    84  } {1}
    85  do_test lookaside-1.8 {
    86    db cache flush
    87    foreach {x y z} [sqlite3_db_status db DBSTATUS_LOOKASIDE_USED 1] break
    88    expr {$x==0 && $y==0 && $z<18}
    89  } {1}
    90  do_test lookaside-1.9 {
    91    db cache flush
    92    sqlite3_db_status db DBSTATUS_LOOKASIDE_USED 0
    93  } {0 0 0}
    94  
    95  do_test lookaside-2.1 {
    96    sqlite3_db_config_lookaside db 0 100 1000
    97  } {0}
    98  do_test lookaside-2.2 {
    99    db eval {CREATE TABLE t2(x);}
   100    foreach {x y z} [sqlite3_db_status db DBSTATUS_LOOKASIDE_USED 0] break
   101    expr {$x==0 && $y<$z && $z>10 && $z<100}
   102  } {1}
   103  do_test lookaside-2.3 {
   104    db eval {SELECT 1}
   105    sqlite3_db_config_lookaside db 0 50 50
   106  } {5}  ;# SQLITE_BUSY
   107  do_test lookaside-2.4 {
   108    db cache flush
   109    sqlite3_db_config_lookaside db 0 50 50
   110  } {0}  ;# SQLITE_OK
   111  do_test lookaside-2.5 {
   112    sqlite3_db_config_lookaside db 0 -1 50
   113  } {0}  ;# SQLITE_OK
   114  do_test lookaside-2.6 {
   115    sqlite3_db_config_lookaside db 0 50 -1
   116  } {0}  ;# SQLITE_OK
   117  
   118  # sqlite3_db_status() with an invalid verb returns an error.
   119  #
   120  do_test lookaside-3.1 {
   121    sqlite3_db_status db 99999 0
   122  } {1 0 0}
   123  
   124  # Test that an invalid verb on sqlite3_config() is detected and
   125  # reported as an error.
   126  #
   127  do_test lookaside-4.1 {
   128    db close
   129    sqlite3_shutdown
   130    catch sqlite3_config_error
   131  } {0}
   132  sqlite3_initialize
   133  autoinstall_test_functions
   134  
   135  test_restore_config_pagecache
   136  finish_test