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# 2017 April 26
#
# 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.
#
#***********************************************************************
#
set testdir [file dirname $argv0]
source $testdir/tester.tcl
set testprefix cachespill
ifcapable !pager_pragmas {
finish_test
return
}
#-------------------------------------------------------------------------
# Test that "PRAGMA cache_spill = 0" completely disables cache spilling.
#
do_execsql_test 1.1 {
PRAGMA auto_vacuum = 0;
PRAGMA page_size = 1024;
PRAGMA cache_size = 100;
CREATE TABLE t1(a);
}
do_test 1.2 {
file size test.db
} {2048}
do_test 1.3 {
execsql {
BEGIN;
WITH s(i) AS (
SELECT 1 UNION ALL SELECT i+1 FROM s WHERE i<200
) INSERT INTO t1 SELECT randomblob(900) FROM s;
}
expr {[file size test.db] > 50000}
} {1}
do_test 1.4 {
execsql ROLLBACK
file size test.db
} {2048}
do_test 1.5 {
execsql {
PRAGMA cache_spill = 0;
BEGIN;
WITH s(i) AS (
SELECT 1 UNION ALL SELECT i+1 FROM s WHERE i<200
) INSERT INTO t1 SELECT randomblob(900) FROM s;
}
file size test.db
} {2048}
do_test 1.5 {
execsql {
ROLLBACK;
PRAGMA cache_spill = 1;
BEGIN;
WITH s(i) AS (
SELECT 1 UNION ALL SELECT i+1 FROM s WHERE i<200
) INSERT INTO t1 SELECT randomblob(900) FROM s;
}
expr {[file size test.db] > 50000}
} {1}
do_execsql_test 1.6 { ROLLBACK }
finish_test
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