3 # The author disclaims copyright to this source code. In place of
4 # a legal notice, here is a blessing:
6 # May you do good and not evil.
7 # May you find forgiveness for yourself and forgive others.
8 # May you share freely, never taking more than you give.
10 #***********************************************************************
12 # This file is focused on testing the pcache module.
14 # $Id: pcache.test,v 1.5 2009/05/08 06:52:48 danielk1977 Exp $
16 set testdir [file dirname $argv0]
17 source $testdir/tester.tcl
19 # Do not use a codec for tests in this file, as the database file is
20 # manipulated directly using tcl scripts (using the [hexio_write] command).
24 # Only works with a mode-2 pcache where all pcaches share a single set
27 ifcapable {!memorymanage && threadsafe} {
32 # The pcache module limits the number of pages available to purgeable
33 # caches to the sum of the 'cache_size' values for the set of open
34 # caches. This block of tests, pcache-1.*, test that the library behaves
35 # corrctly when it is forced to exceed this limit.
40 } {current 0 max 0 min 0 recyclable 0}
50 } {current 1 max 12 min 10 recyclable 1}
55 CREATE TABLE t1(a, b, c);
56 CREATE TABLE t2(a, b, c);
57 CREATE TABLE t3(a, b, c);
58 CREATE TABLE t4(a, b, c);
59 CREATE TABLE t5(a, b, c);
62 } {current 6 max 12 min 10 recyclable 0}
66 CREATE TABLE t6(a, b, c);
67 CREATE TABLE t7(a, b, c);
68 CREATE TABLE t8(a, b, c);
69 CREATE TABLE t9(a, b, c);
72 } {current 10 max 12 min 10 recyclable 0}
76 execsql "PRAGMA cache_size; PRAGMA cache_size=10" db2
78 } {current 11 max 22 min 20 recyclable 1}
80 do_test pcache-1.6.1 {
83 SELECT * FROM sqlite_master;
86 } {current 11 max 22 min 20 recyclable 0}
88 # At this point connection db2 has a read lock on the database file and a
89 # single pinned page in its cache. Connection [db] is holding 10 dirty
90 # pages. It cannot recycle them because of the read lock held by db2.
92 do_test pcache-1.6.2 {
94 CREATE INDEX i1 ON t1(a, b);
95 CREATE INDEX i2 ON t2(a, b);
96 CREATE INDEX i3 ON t3(a, b);
97 CREATE INDEX i4 ON t4(a, b);
98 CREATE INDEX i5 ON t5(a, b);
99 CREATE INDEX i6 ON t6(a, b);
100 CREATE INDEX i7 ON t7(a, b);
101 CREATE INDEX i8 ON t8(a, b);
102 CREATE INDEX i9 ON t9(a, b);
103 CREATE INDEX i10 ON t9(a, b);
104 CREATE INDEX i11 ON t9(a, b);
107 } {current 23 max 22 min 20 recyclable 0}
111 CREATE TABLE t10(a, b, c);
114 } {current 24 max 22 min 20 recyclable 0}
116 # Rolling back the transaction held by db2 at this point releases a pinned
117 # page. Because the number of allocated pages is greater than the
118 # configured maximum, this page should be freed immediately instead of
122 execsql {ROLLBACK} db2
124 } {current 23 max 22 min 20 recyclable 0}
129 } {current 22 max 22 min 20 recyclable 22}
131 do_test pcache-1.10 {
134 } {current 12 max 12 min 10 recyclable 12}
136 do_test pcache-1.11 {
137 execsql { PRAGMA cache_size = 20 }
139 } {current 12 max 20 min 10 recyclable 12}
141 do_test pcache-1.12 {
143 SELECT * FROM t1 ORDER BY a; SELECT * FROM t1;
144 SELECT * FROM t2 ORDER BY a; SELECT * FROM t2;
145 SELECT * FROM t3 ORDER BY a; SELECT * FROM t3;
146 SELECT * FROM t4 ORDER BY a; SELECT * FROM t4;
147 SELECT * FROM t5 ORDER BY a; SELECT * FROM t5;
148 SELECT * FROM t6 ORDER BY a; SELECT * FROM t6;
149 SELECT * FROM t7 ORDER BY a; SELECT * FROM t7;
150 SELECT * FROM t8 ORDER BY a; SELECT * FROM t8;
151 SELECT * FROM t9 ORDER BY a; SELECT * FROM t9;
154 } {current 19 max 20 min 10 recyclable 19}
156 do_test pcache-1.13 {
157 execsql { PRAGMA cache_size = 15 }
159 } {current 15 max 15 min 10 recyclable 15}
161 do_test pcache-1.14 {
162 hexio_write test.db 24 [hexio_render_int32 1000]
163 execsql { SELECT * FROM sqlite_master }
165 } {current 2 max 15 min 10 recyclable 2}
167 do_test pcache-1.15 {
169 SELECT * FROM t1 ORDER BY a; SELECT * FROM t1;
170 SELECT * FROM t2 ORDER BY a; SELECT * FROM t2;
171 SELECT * FROM t3 ORDER BY a; SELECT * FROM t3;
172 SELECT * FROM t4 ORDER BY a; SELECT * FROM t4;
173 SELECT * FROM t5 ORDER BY a; SELECT * FROM t5;
174 SELECT * FROM t6 ORDER BY a; SELECT * FROM t6;
175 SELECT * FROM t7 ORDER BY a; SELECT * FROM t7;
176 SELECT * FROM t8 ORDER BY a; SELECT * FROM t8;
177 SELECT * FROM t9 ORDER BY a; SELECT * FROM t9;
180 } {current 14 max 15 min 10 recyclable 14}