drh
52 lines
1.4 KiB
Plaintext
52 lines
1.4 KiB
Plaintext
# 2011 November 16
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#
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# The author disclaims copyright to this source code. In place of
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# a legal notice, here is a blessing:
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#
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# May you do good and not evil.
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# May you find forgiveness for yourself and forgive others.
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# May you share freely, never taking more than you give.
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#
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#***********************************************************************
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#
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# This file contains test cases for sqlite3_db_release_memory and
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# the PRAGMA shrink_memory statement.
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#
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set testdir [file dirname $argv0]
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source $testdir/tester.tcl
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# purgeable pcache tracks memory differently
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ifcapable {enable_purgeable_pcache} {
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finish_test
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return
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}
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unset -nocomplain baseline
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do_test shrink-1.1 {
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db eval {
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PRAGMA cache_size = 2000;
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CREATE TABLE t1(x,y);
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INSERT INTO t1 VALUES(randomblob(1000000),1);
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}
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set ::baseline sqlite3_memory_used
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# EVIDENCE-OF: R-58814-63508 The sqlite3_db_release_memory(D) interface
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# attempts to free as much heap memory as possible from database
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# connection D.
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sqlite3_db_release_memory db
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expr {$::baseline > [sqlite3_memory_used]+500000}
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} {1}
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do_test shrink-1.2 {
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set baseline [sqlite3_memory_used]
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db eval {
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UPDATE t1 SET y=y+1;
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}
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expr {$::baseline+500000 < [sqlite3_memory_used]}
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} {1}
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do_test shrink-1.3 {
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set baseline [sqlite3_memory_used]
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db eval {PRAGMA shrink_memory}
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expr {$::baseline > [sqlite3_memory_used]+500000}
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} {1}
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finish_test
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