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88 lines
2.2 KiB
Plaintext
88 lines
2.2 KiB
Plaintext
# 2021-10-15
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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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# This file implements regression tests for SQLite library. The
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# focus of this file is testing the sqlite3_autovacuum_pages() interface
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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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# If this build of the library does not support auto-vacuum, omit this
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# whole file.
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ifcapable {!autovacuum || !pragma} {
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finish_test
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return
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}
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# Demonstrate basic sqlite3_autovacuum_pages functionality
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#
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do_execsql_test autovacuum2-1.0 {
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PRAGMA page_size=1024;
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PRAGMA auto_vacuum=FULL;
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CREATE TABLE t1(x);
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VACUUM;
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INSERT INTO t1(x) VALUES(zeroblob(10000));
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PRAGMA page_count;
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} {12}
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proc autovac_page_callback {schema filesize freesize pagesize} {
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global autovac_callback_data
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lappend autovac_callback_data $schema $filesize $freesize $pagesize
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return [expr {$freesize/2}]
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}
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sqlite3_autovacuum_pages db autovac_page_callback
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set autovac_callback_data {}
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do_execsql_test autovacuum2-1.1 {
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BEGIN;
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DELETE FROM t1;
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PRAGMA freelist_count;
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PRAGMA page_count;
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} {9 12}
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do_execsql_test autovacuum2-1.2 {
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COMMIT;
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} {}
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do_test autovacuum2-1.3 {
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set autovac_callback_data
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} {main 12 9 1024}
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do_execsql_test autovacuum2-1.4 {
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PRAGMA freelist_count;
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PRAGMA page_count;
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} {5 8}
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do_execsql_test autovacuum2-1.5 {
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PRAGMA integrity_check;
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} {ok}
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# Disable the autovacuum-pages callback. Then do any transaction.
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# The database should shrink to minimal size
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#
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sqlite3_autovacuum_pages db
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do_execsql_test autovacuum2-1.10 {
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CREATE TABLE t2(x);
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PRAGMA freelist_count;
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} {0}
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# Rig the autovacuum-pages callback to always return zero. No
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# autovacuum will happen.
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#
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proc autovac_page_callback_off {schema filesize freesize pagesize} {
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return 0
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}
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sqlite3_autovacuum_pages db autovac_page_callback_off
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do_execsql_test autovacuum2-1.20 {
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BEGIN;
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INSERT INTO t1(x) VALUES(zeroblob(10000));
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DELETE FROM t1;
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PRAGMA freelist_count;
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COMMIT;
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PRAGMA freelist_count;
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} {9 9}
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finish_test
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