/trunk/test/pcache.test |
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# 2008 August 29 |
# |
# 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 is focused on testing the pcache module. |
# |
# $Id: pcache.test,v 1.5 2009/05/08 06:52:48 danielk1977 Exp $ |
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set testdir [file dirname $argv0] |
source $testdir/tester.tcl |
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# Do not use a codec for tests in this file, as the database file is |
# manipulated directly using tcl scripts (using the [hexio_write] command). |
# |
do_not_use_codec |
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# Only works with a mode-2 pcache where all pcaches share a single set |
# of pages. |
# |
ifcapable {!memorymanage && threadsafe} { |
finish_test |
return |
} |
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# The pcache module limits the number of pages available to purgeable |
# caches to the sum of the 'cache_size' values for the set of open |
# caches. This block of tests, pcache-1.*, test that the library behaves |
# corrctly when it is forced to exceed this limit. |
# |
do_test pcache-1.1 { |
db close |
pcache_stats |
} {current 0 max 0 min 0 recyclable 0} |
|
do_test pcache-1.2 { |
sqlite3 db test.db |
execsql { |
PRAGMA cache_size=12; |
PRAGMA auto_vacuum=0; |
} |
pcache_stats |
} {current 1 max 12 min 10 recyclable 1} |
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do_test pcache-1.3 { |
execsql { |
BEGIN; |
CREATE TABLE t1(a, b, c); |
CREATE TABLE t2(a, b, c); |
CREATE TABLE t3(a, b, c); |
CREATE TABLE t4(a, b, c); |
CREATE TABLE t5(a, b, c); |
} |
pcache_stats |
} {current 6 max 12 min 10 recyclable 0} |
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do_test pcache-1.4 { |
execsql { |
CREATE TABLE t6(a, b, c); |
CREATE TABLE t7(a, b, c); |
CREATE TABLE t8(a, b, c); |
CREATE TABLE t9(a, b, c); |
} |
pcache_stats |
} {current 10 max 12 min 10 recyclable 0} |
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do_test pcache-1.5 { |
sqlite3 db2 test.db |
execsql "PRAGMA cache_size=10" db2 |
pcache_stats |
} {current 11 max 22 min 20 recyclable 1} |
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do_test pcache-1.6.1 { |
execsql { |
BEGIN; |
SELECT * FROM sqlite_master; |
} db2 |
pcache_stats |
} {current 11 max 22 min 20 recyclable 0} |
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# At this point connection db2 has a read lock on the database file and a |
# single pinned page in its cache. Connection [db] is holding 10 dirty |
# pages. It cannot recycle them because of the read lock held by db2. |
# |
do_test pcache-1.6.2 { |
execsql { |
CREATE INDEX i1 ON t1(a, b); |
CREATE INDEX i2 ON t2(a, b); |
CREATE INDEX i3 ON t3(a, b); |
CREATE INDEX i4 ON t4(a, b); |
CREATE INDEX i5 ON t5(a, b); |
CREATE INDEX i6 ON t6(a, b); |
CREATE INDEX i7 ON t7(a, b); |
CREATE INDEX i8 ON t8(a, b); |
CREATE INDEX i9 ON t9(a, b); |
CREATE INDEX i10 ON t9(a, b); |
CREATE INDEX i11 ON t9(a, b); |
} |
pcache_stats |
} {current 23 max 22 min 20 recyclable 0} |
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do_test pcache-1.7 { |
execsql { |
CREATE TABLE t10(a, b, c); |
} |
pcache_stats |
} {current 24 max 22 min 20 recyclable 0} |
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# Rolling back the transaction held by db2 at this point releases a pinned |
# page. Because the number of allocated pages is greater than the |
# configured maximum, this page should be freed immediately instead of |
# recycled. |
# |
do_test pcache-1.8 { |
execsql {ROLLBACK} db2 |
pcache_stats |
} {current 23 max 22 min 20 recyclable 0} |
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do_test pcache-1.9 { |
execsql COMMIT |
pcache_stats |
} {current 22 max 22 min 20 recyclable 22} |
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do_test pcache-1.10 { |
db2 close |
pcache_stats |
} {current 12 max 12 min 10 recyclable 12} |
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do_test pcache-1.11 { |
execsql { PRAGMA cache_size = 20 } |
pcache_stats |
} {current 12 max 20 min 10 recyclable 12} |
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do_test pcache-1.12 { |
execsql { |
SELECT * FROM t1 ORDER BY a; SELECT * FROM t1; |
SELECT * FROM t2 ORDER BY a; SELECT * FROM t2; |
SELECT * FROM t3 ORDER BY a; SELECT * FROM t3; |
SELECT * FROM t4 ORDER BY a; SELECT * FROM t4; |
SELECT * FROM t5 ORDER BY a; SELECT * FROM t5; |
SELECT * FROM t6 ORDER BY a; SELECT * FROM t6; |
SELECT * FROM t7 ORDER BY a; SELECT * FROM t7; |
SELECT * FROM t8 ORDER BY a; SELECT * FROM t8; |
SELECT * FROM t9 ORDER BY a; SELECT * FROM t9; |
} |
pcache_stats |
} {current 19 max 20 min 10 recyclable 19} |
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do_test pcache-1.13 { |
execsql { PRAGMA cache_size = 15 } |
pcache_stats |
} {current 15 max 15 min 10 recyclable 15} |
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do_test pcache-1.14 { |
hexio_write test.db 24 [hexio_render_int32 1000] |
execsql { SELECT * FROM sqlite_master } |
pcache_stats |
} {current 2 max 15 min 10 recyclable 2} |
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do_test pcache-1.15 { |
execsql { |
SELECT * FROM t1 ORDER BY a; SELECT * FROM t1; |
SELECT * FROM t2 ORDER BY a; SELECT * FROM t2; |
SELECT * FROM t3 ORDER BY a; SELECT * FROM t3; |
SELECT * FROM t4 ORDER BY a; SELECT * FROM t4; |
SELECT * FROM t5 ORDER BY a; SELECT * FROM t5; |
SELECT * FROM t6 ORDER BY a; SELECT * FROM t6; |
SELECT * FROM t7 ORDER BY a; SELECT * FROM t7; |
SELECT * FROM t8 ORDER BY a; SELECT * FROM t8; |
SELECT * FROM t9 ORDER BY a; SELECT * FROM t9; |
} |
pcache_stats |
} {current 14 max 15 min 10 recyclable 14} |
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finish_test |