| # 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 |