254 lines
7.1 KiB
Plaintext
254 lines
7.1 KiB
Plaintext
# 2001 September 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 SELECT statement.
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#
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# $Id: autovacuum.test,v 1.7 2004/11/05 12:27:03 danielk1977 Exp $
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set testdir [file dirname $argv0]
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source $testdir/tester.tcl
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# Return a string $len characters long. The returned string is $char repeated
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# over and over. For example, [make_str abc 8] returns "abcabcab".
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proc make_str {char len} {
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set str [string repeat $char. $len]
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return [string range $str 0 [expr $len-1]]
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}
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# Return the number of pages in the file test.db by looking at the file system.
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proc file_pages {} {
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return [expr [file size test.db] / 1024]
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}
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# Test cases autovacuum-1.* work as follows:
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#
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# 1. A table with a single indexed field is created.
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# 2. Approximately 20 rows are inserted into the table. Each row is long
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# enough such that it uses at least 2 overflow pages for both the table
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# and index entry.
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# 3. The rows are deleted in a psuedo-random order. Sometimes only one row
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# is deleted per transaction, sometimes more than one.
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# 4. After each transaction the table data is checked to ensure it is correct
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# and a "PRAGMA integrity_check" is executed.
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# 5. Once all the rows are deleted the file is checked to make sure it
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# consists of exactly 4 pages.
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#
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# Steps 2-5 are repeated for a few different psuedo-random delete patterns
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# (defined by the $delete_orders list).
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set delete_orders [list]
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lappend delete_orders {1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20}
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lappend delete_orders {20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1}
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lappend delete_orders {8 18 2 4 14 11 13 3 10 7 9 5 12 17 19 15 20 6 16 1}
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lappend delete_orders {10 3 11 17 19 20 7 4 13 6 1 14 16 12 9 18 8 15 5 2}
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lappend delete_orders {{1 2 3 4 5 6 7 8 9 10} {11 12 13 14 15 16 17 18 19 20}}
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lappend delete_orders {{19 8 17 15} {16 11 9 14} {18 5 3 1} {13 20 7 2} {6 12}}
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# The length of each table entry.
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set ENTRY_LEN 3500
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do_test autovacuum-1.1 {
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execsql {
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CREATE TABLE av1(a);
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CREATE INDEX av1_idx ON av1(a);
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}
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} {}
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set tn 0
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foreach delete_order $delete_orders {
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incr tn
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# Set up the table.
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set ::tbl_data [list]
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foreach i [lsort -integer [eval concat $delete_order]] {
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execsql "INSERT INTO av1 (oid, a) VALUES($i, '[make_str $i $ENTRY_LEN]')"
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lappend ::tbl_data [make_str $i $ENTRY_LEN]
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}
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# Make sure the integrity check passes with the initial data.
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do_test autovacuum-1.$tn.1 {
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execsql {
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pragma integrity_check
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}
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} {ok}
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# set btree_trace 1
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foreach delete $delete_order {
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# Delete one set of rows from the table.
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do_test autovacuum-1.$tn.($delete).1 {
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execsql "
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DELETE FROM av1 WHERE oid IN ([join $delete ,])
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"
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} {}
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# Do the integrity check.
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do_test autovacuum-1.$tn.($delete).2 {
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execsql {
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pragma integrity_check
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}
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} {ok}
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# Ensure the data remaining in the table is what was expected.
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foreach d $delete {
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set idx [lsearch $::tbl_data [make_str $d $ENTRY_LEN]]
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set ::tbl_data [lreplace $::tbl_data $idx $idx]
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}
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do_test autovacuum-1.$tn.($delete).3 {
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execsql {
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select a from av1
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}
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} $::tbl_data
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}
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# All rows have been deleted. Ensure the file has shrunk to 4 pages.
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do_test autovacuum-1.$tn.3 {
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file_pages
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} {4}
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}
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# Tests cases autovacuum-2.* test that root pages are allocated
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# and deallocated correctly at the start of the file. Operation is roughly as
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# follows:
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#
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# autovacuum-2.1.*: Drop the tables that currently exist in the database.
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# autovacuum-2.2.*: Create some tables. Ensure that data pages can be
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# moved correctly to make space for new root-pages.
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# autovacuum-2.3.*: Drop one of the tables just created (not the last one),
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# and check that one of the other tables is moved to
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# the free root-page location.
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# autovacuum-2.4.*: Check that a table can be created correctly when the
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# root-page it requires is on the free-list.
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#
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do_test autovacuum-2.1.1 {
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execsql {
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DROP TABLE av1;
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}
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} {}
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do_test autovacuum-2.1.2 {
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file_pages
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} {1}
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# Create a table and put some data in it.
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do_test autovacuum-2.2.1 {
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execsql {
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CREATE TABLE av1(x);
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SELECT rootpage FROM sqlite_master ORDER BY rootpage;
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}
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} {3}
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do_test autovacuum-2.2.2 {
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execsql "
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INSERT INTO av1 VALUES('[make_str abc 3000]');
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INSERT INTO av1 VALUES('[make_str def 3000]');
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INSERT INTO av1 VALUES('[make_str ghi 3000]');
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INSERT INTO av1 VALUES('[make_str jkl 3000]');
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"
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set ::av1_data [db eval {select * from av1}]
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file_pages
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} {15}
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# Create another table. Check it is located immediately after the first.
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# This test case moves the second page in an over-flow chain.
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do_test autovacuum-2.2.3 {
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execsql {
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CREATE TABLE av2(x);
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SELECT rootpage FROM sqlite_master ORDER BY rootpage;
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}
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} {3 4}
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do_test autovacuum-2.2.4 {
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file_pages
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} {16}
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# Create another table. Check it is located immediately after the second.
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# This test case moves the first page in an over-flow chain.
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do_test autovacuum-2.2.5 {
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execsql {
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CREATE TABLE av3(x);
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SELECT rootpage FROM sqlite_master ORDER BY rootpage;
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}
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} {3 4 5}
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do_test autovacuum-2.2.6 {
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file_pages
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} {17}
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# Create another table. Check it is located immediately after the second.
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# This test case moves a btree leaf page.
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do_test autovacuum-2.2.7 {
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execsql {
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CREATE TABLE av4(x);
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SELECT rootpage FROM sqlite_master ORDER BY rootpage;
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}
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} {3 4 5 6}
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do_test autovacuum-2.2.8 {
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file_pages
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} {18}
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do_test autovacuum-2.2.9 {
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execsql {
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select * from av1
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}
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} $av1_data
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do_test autovacuum-2.3.1 {
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execsql {
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INSERT INTO av2 SELECT 'av1' || x FROM av1;
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INSERT INTO av3 SELECT 'av2' || x FROM av1;
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INSERT INTO av4 SELECT 'av3' || x FROM av1;
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}
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set ::av2_data [execsql {select x from av2}]
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set ::av3_data [execsql {select x from av3}]
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set ::av4_data [execsql {select x from av4}]
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file_pages
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} {54}
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do_test autovacuum-2.3.2 {
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execsql {
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DROP TABLE av2;
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SELECT rootpage FROM sqlite_master ORDER BY rootpage;
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}
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} {3 4 5}
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do_test autovacuum-2.3.3 {
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file_pages
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} {41}
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do_test autovacuum-2.3.4 {
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execsql {
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SELECT x FROM av3;
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}
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} $::av3_data
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do_test autovacuum-2.3.5 {
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execsql {
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SELECT x FROM av4;
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}
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} $::av4_data
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# Drop all the tables in the file. This puts all pages except the first 2
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# (the sqlite_master root-page and the first pointer map page) on the
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# free-list.
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do_test autovacuum-2.4.1 {
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execsql {
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DROP TABLE av1;
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DROP TABLE av3;
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BEGIN;
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DROP TABLE av4;
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}
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file_pages
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} {15}
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do_test autovacuum-2.4.2 {
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for {set i 3} {$i<=10} {incr i} {
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execsql "CREATE TABLE av$i (x)"
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}
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file_pages
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} {15}
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do_test autovacuum-2.4.3 {
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execsql {
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SELECT rootpage FROM sqlite_master ORDER by rootpage
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}
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} {3 4 5 6 7 8 9 10}
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finish_test
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