# 2005 February 15 # # The author disclaims copyright to this source code. In place of # a legal notice, here is a blessing: # # May you do good and not evil. # May you find forgiveness for yourself and forgive others. # May you share freely, never taking more than you give. # #*********************************************************************** # This file implements regression tests for SQLite library. The # focus of this file is testing that the VACUUM statement correctly # frees any memory used for a temporary cache. # set testdir [file dirname $argv0] source $testdir/tester.tcl set testprefix vacuummem if {[permutation]=="memsubsys1"} { finish_test return } # If ENABLE_MEMORY_MANAGEMENT is defined, when VACUUM is run the temp db # is able to borrow space from the main db (and it does, because the # temp db is configure with a very small cache). When the VACUUM is # finished and the temp db closed, all the page-cache memory currently # assigned to the temp db is freed. If ENABLE_MEMORY_MANAGEMENT is defined # this causes the total memory usage to drop much more than expected, # causing tests in this file to fail. # ifcapable memorymanage { finish_test return } proc memory_used {} { set stat [sqlite3_status SQLITE_STATUS_MEMORY_USED 1] lindex $stat 1 } do_execsql_test 1.0 { PRAGMA cache_size = -2000; CREATE TABLE t1(a, b, c); WITH r(i) AS ( SELECT 1 UNION ALL SELECT i+1 FROM r WHERE i<100000 ) INSERT INTO t1 SELECT randomblob(100),randomblob(100),randomblob(100) FROM r; CREATE INDEX t1a ON t1(a); CREATE INDEX t1b ON t1(b); CREATE INDEX t1c ON t1(c); } set ans "#/[memory_used]/" do_test 1.1 { memory_used } $ans do_execsql_test 1.2 VACUUM do_test 1.3 { memory_used } $ans do_execsql_test 1.4 { SELECT count(*) FROM t1 WHERE +a IS NOT NULL } {100000} do_test 1.5 { memory_used } $ans finish_test