diff options
Diffstat (limited to '')
-rw-r--r-- | test/vacuummem.test | 74 |
1 files changed, 74 insertions, 0 deletions
diff --git a/test/vacuummem.test b/test/vacuummem.test new file mode 100644 index 0000000..9668b0e --- /dev/null +++ b/test/vacuummem.test @@ -0,0 +1,74 @@ +# 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. +# +# TESTRUNNER: slow + +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 |