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Diffstat (limited to 'test/pcache.test')
-rw-r--r-- | test/pcache.test | 182 |
1 files changed, 182 insertions, 0 deletions
diff --git a/test/pcache.test b/test/pcache.test new file mode 100644 index 0000000..5d9d93e --- /dev/null +++ b/test/pcache.test @@ -0,0 +1,182 @@ +# 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 $ + +set testdir [file dirname $argv0] +source $testdir/tester.tcl + +# 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 + +# Only works with a mode-2 pcache where all pcaches share a single set +# of pages. +# +ifcapable {!memorymanage && threadsafe} { + finish_test + return +} + +# 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; + PRAGMA mmap_size=0; + } + pcache_stats +} {current 1 max 12 min 10 recyclable 1} + +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} + +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} + +do_test pcache-1.5 { + sqlite3 db2 test.db + execsql "PRAGMA cache_size; PRAGMA cache_size=10" db2 + pcache_stats +} {current 11 max 22 min 20 recyclable 1} + +do_test pcache-1.6.1 { + execsql { + BEGIN; + SELECT * FROM sqlite_master; + } db2 + pcache_stats +} {current 11 max 22 min 20 recyclable 0} + +# 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} + +do_test pcache-1.7 { + execsql { + CREATE TABLE t10(a, b, c); + } + pcache_stats +} {current 24 max 22 min 20 recyclable 0} + +# 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} + +do_test pcache-1.9 { + execsql COMMIT + pcache_stats +} {current 22 max 22 min 20 recyclable 22} + +do_test pcache-1.10 { + db2 close + pcache_stats +} {current 12 max 12 min 10 recyclable 12} + +do_test pcache-1.11 { + execsql { PRAGMA cache_size = 20 } + pcache_stats +} {current 12 max 20 min 10 recyclable 12} + +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} + +do_test pcache-1.13 { + execsql { PRAGMA cache_size = 15 } + pcache_stats +} {current 15 max 15 min 10 recyclable 15} + +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} + +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} + +finish_test |