# 2001 September 15 # # 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 implements regression tests for SQLite library. The # focus of this file is testing the SELECT statement. # # $Id: autovacuum.test,v 1.17 2005/03/09 13:09:45 danielk1977 Exp $ set testdir [file dirname $argv0] source $testdir/tester.tcl # If this build of the library does not support auto-vacuum, omit this # whole file. ifcapable {!autovacuum} { finish_test return } # Return a string $len characters long. The returned string is $char repeated # over and over. For example, [make_str abc 8] returns "abcabcab". proc make_str {char len} { set str [string repeat $char. $len] return [string range $str 0 [expr $len-1]] } # Return the number of pages in the file test.db by looking at the file system. proc file_pages {} { return [expr [file size test.db] / 1024] } #------------------------------------------------------------------------- # Test cases autovacuum-1.* work as follows: # # 1. A table with a single indexed field is created. # 2. Approximately 20 rows are inserted into the table. Each row is long # enough such that it uses at least 2 overflow pages for both the table # and index entry. # 3. The rows are deleted in a psuedo-random order. Sometimes only one row # is deleted per transaction, sometimes more than one. # 4. After each transaction the table data is checked to ensure it is correct # and a "PRAGMA integrity_check" is executed. # 5. Once all the rows are deleted the file is checked to make sure it # consists of exactly 4 pages. # # Steps 2-5 are repeated for a few different psuedo-random delete patterns # (defined by the $delete_orders list). set delete_orders [list] lappend delete_orders {1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20} lappend delete_orders {20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1} lappend delete_orders {8 18 2 4 14 11 13 3 10 7 9 5 12 17 19 15 20 6 16 1} lappend delete_orders {10 3 11 17 19 20 7 4 13 6 1 14 16 12 9 18 8 15 5 2} lappend delete_orders {{1 2 3 4 5 6 7 8 9 10} {11 12 13 14 15 16 17 18 19 20}} lappend delete_orders {{19 8 17 15} {16 11 9 14} {18 5 3 1} {13 20 7 2} {6 12}} # The length of each table entry. # set ENTRY_LEN 3500 set ENTRY_LEN 3500 do_test autovacuum-1.1 { execsql { PRAGMA auto_vacuum = 1; CREATE TABLE av1(a); CREATE INDEX av1_idx ON av1(a); } } {} set tn 0 foreach delete_order $delete_orders { incr tn # Set up the table. set ::tbl_data [list] foreach i [lsort -integer [eval concat $delete_order]] { execsql "INSERT INTO av1 (oid, a) VALUES($i, '[make_str $i $ENTRY_LEN]')" lappend ::tbl_data [make_str $i $ENTRY_LEN] } # Make sure the integrity check passes with the initial data. ifcapable {integrityck} { do_test autovacuum-1.$tn.1 { execsql { pragma integrity_check } } {ok} } foreach delete $delete_order { # Delete one set of rows from the table. do_test autovacuum-1.$tn.($delete).1 { execsql " DELETE FROM av1 WHERE oid = [join $delete "OR oid = "] " } {} # Do the integrity check. ifcapable {integrityck} { do_test autovacuum-1.$tn.($delete).2 { execsql { pragma integrity_check } } {ok} } # Ensure the data remaining in the table is what was expected. foreach d $delete { set idx [lsearch $::tbl_data [make_str $d $ENTRY_LEN]] set ::tbl_data [lreplace $::tbl_data $idx $idx] } do_test autovacuum-1.$tn.($delete).3 { execsql { select a from av1 } } $::tbl_data } # All rows have been deleted. Ensure the file has shrunk to 4 pages. do_test autovacuum-1.$tn.3 { file_pages } {4} } #--------------------------------------------------------------------------- # Tests cases autovacuum-2.* test that root pages are allocated # and deallocated correctly at the start of the file. Operation is roughly as # follows: # # autovacuum-2.1.*: Drop the tables that currently exist in the database. # autovacuum-2.2.*: Create some tables. Ensure that data pages can be # moved correctly to make space for new root-pages. # autovacuum-2.3.*: Drop one of the tables just created (not the last one), # and check that one of the other tables is moved to # the free root-page location. # autovacuum-2.4.*: Check that a table can be created correctly when the # root-page it requires is on the free-list. # autovacuum-2.5.*: Check that a table with indices can be dropped. This # is slightly tricky because dropping one of the # indices/table btrees could move the root-page of another. # The code-generation layer of SQLite overcomes this problem # by dropping the btrees in descending order of root-pages. # This test ensures that this actually happens. # do_test autovacuum-2.1.1 { execsql { DROP TABLE av1; } } {} do_test autovacuum-2.1.2 { file_pages } {1} # Create a table and put some data in it. do_test autovacuum-2.2.1 { execsql { CREATE TABLE av1(x); SELECT rootpage FROM sqlite_master ORDER BY rootpage; } } {3} do_test autovacuum-2.2.2 { execsql " INSERT INTO av1 VALUES('[make_str abc 3000]'); INSERT INTO av1 VALUES('[make_str def 3000]'); INSERT INTO av1 VALUES('[make_str ghi 3000]'); INSERT INTO av1 VALUES('[make_str jkl 3000]'); " set ::av1_data [db eval {select * from av1}] file_pages } {15} # Create another table. Check it is located immediately after the first. # This test case moves the second page in an over-flow chain. do_test autovacuum-2.2.3 { execsql { CREATE TABLE av2(x); SELECT rootpage FROM sqlite_master ORDER BY rootpage; } } {3 4} do_test autovacuum-2.2.4 { file_pages } {16} # Create another table. Check it is located immediately after the second. # This test case moves the first page in an over-flow chain. do_test autovacuum-2.2.5 { execsql { CREATE TABLE av3(x); SELECT rootpage FROM sqlite_master ORDER BY rootpage; } } {3 4 5} do_test autovacuum-2.2.6 { file_pages } {17} # Create another table. Check it is located immediately after the second. # This test case moves a btree leaf page. do_test autovacuum-2.2.7 { execsql { CREATE TABLE av4(x); SELECT rootpage FROM sqlite_master ORDER BY rootpage; } } {3 4 5 6} do_test autovacuum-2.2.8 { file_pages } {18} do_test autovacuum-2.2.9 { execsql { select * from av1 } } $av1_data do_test autovacuum-2.3.1 { execsql { INSERT INTO av2 SELECT 'av1' || x FROM av1; INSERT INTO av3 SELECT 'av2' || x FROM av1; INSERT INTO av4 SELECT 'av3' || x FROM av1; } set ::av2_data [execsql {select x from av2}] set ::av3_data [execsql {select x from av3}] set ::av4_data [execsql {select x from av4}] file_pages } {54} do_test autovacuum-2.3.2 { execsql { DROP TABLE av2; SELECT rootpage FROM sqlite_master ORDER BY rootpage; } } {3 4 5} do_test autovacuum-2.3.3 { file_pages } {41} do_test autovacuum-2.3.4 { execsql { SELECT x FROM av3; } } $::av3_data do_test autovacuum-2.3.5 { execsql { SELECT x FROM av4; } } $::av4_data # Drop all the tables in the file. This puts all pages except the first 2 # (the sqlite_master root-page and the first pointer map page) on the # free-list. do_test autovacuum-2.4.1 { execsql { DROP TABLE av1; DROP TABLE av3; BEGIN; DROP TABLE av4; } file_pages } {15} do_test autovacuum-2.4.2 { for {set i 3} {$i<=10} {incr i} { execsql "CREATE TABLE av$i (x)" } file_pages } {15} do_test autovacuum-2.4.3 { execsql { SELECT rootpage FROM sqlite_master ORDER by rootpage } } {3 4 5 6 7 8 9 10} # Right now there are 5 free pages in the database. Consume and then free # a 520 pages. Then create 520 tables. This ensures that at least some of the # desired root-pages reside on the second free-list trunk page, and that the # trunk itself is required at some point. do_test autovacuum-2.4.4 { execsql " INSERT INTO av3 VALUES ('[make_str abcde [expr 1020*520 + 500]]'); DELETE FROM av3; " } {} set root_page_list [list] for {set i 3} {$i<=532} {incr i} { # 207 and 412 are pointer-map pages. if { $i!=207 && $i!=412 } { lappend root_page_list $i } } do_test autovacuum-2.4.5 { for {set i 11} {$i<=530} {incr i} { execsql "CREATE TABLE av$i (x)" } execsql { SELECT rootpage FROM sqlite_master ORDER by rootpage } } $root_page_list # Just for fun, delete all those tables and see if the database is 1 page. do_test autovacuum-2.4.6 { execsql COMMIT; file_pages } 561 integrity_check autovacuum-2.4.6 do_test autovacuum-2.4.7 { execsql BEGIN for {set i 3} {$i<=530} {incr i} { execsql "DROP TABLE av$i" } execsql COMMIT file_pages } 1 # Create some tables with indices to drop. do_test autovacuum-2.5.1 { execsql { CREATE TABLE av1(a PRIMARY KEY, b, c); INSERT INTO av1 VALUES('av1 a', 'av1 b', 'av1 c'); CREATE TABLE av2(a PRIMARY KEY, b, c); CREATE INDEX av2_i1 ON av2(b); CREATE INDEX av2_i2 ON av2(c); INSERT INTO av2 VALUES('av2 a', 'av2 b', 'av2 c'); CREATE TABLE av3(a PRIMARY KEY, b, c); CREATE INDEX av3_i1 ON av3(b); INSERT INTO av3 VALUES('av3 a', 'av3 b', 'av3 c'); CREATE TABLE av4(a, b, c); CREATE INDEX av4_i1 ON av4(a); CREATE INDEX av4_i2 ON av4(b); CREATE INDEX av4_i3 ON av4(c); CREATE INDEX av4_i4 ON av4(a, b, c); INSERT INTO av4 VALUES('av4 a', 'av4 b', 'av4 c'); } } {} do_test autovacuum-2.5.2 { execsql { SELECT name, rootpage FROM sqlite_master; } } [list av1 3 sqlite_autoindex_av1_1 4 \ av2 5 sqlite_autoindex_av2_1 6 av2_i1 7 av2_i2 8 \ av3 9 sqlite_autoindex_av3_1 10 av3_i1 11 \ av4 12 av4_i1 13 av4_i2 14 av4_i3 15 av4_i4 16 \ ] # The following 4 tests are SELECT queries that use the indices created. # If the root-pages in the internal schema are not updated correctly when # a table or indice is moved, these queries will fail. They are repeated # after each table is dropped (i.e. as test cases 2.5.*.[1..4]). do_test autovacuum-2.5.2.1 { execsql { SELECT * FROM av1 WHERE a = 'av1 a'; } } {{av1 a} {av1 b} {av1 c}} do_test autovacuum-2.5.2.2 { execsql { SELECT * FROM av2 WHERE a = 'av2 a' AND b = 'av2 b' AND c = 'av2 c' } } {{av2 a} {av2 b} {av2 c}} do_test autovacuum-2.5.2.3 { execsql { SELECT * FROM av3 WHERE a = 'av3 a' AND b = 'av3 b'; } } {{av3 a} {av3 b} {av3 c}} do_test autovacuum-2.5.2.4 { execsql { SELECT * FROM av4 WHERE a = 'av4 a' AND b = 'av4 b' AND c = 'av4 c'; } } {{av4 a} {av4 b} {av4 c}} # Drop table av3. Indices av4_i2, av4_i3 and av4_i4 are moved to fill the two # root pages vacated. The operation proceeds as: # Step 1: Delete av3_i1 (root-page 11). Move root-page of av4_i4 to page 11. # Step 2: Delete av3 (root-page 10). Move root-page of av4_i3 to page 10. # Step 3: Delete sqlite_autoindex_av1_3 (root-page 9). Move av4_i2 to page 9. do_test autovacuum-2.5.3 { execsql { DROP TABLE av3; SELECT name, rootpage FROM sqlite_master; } } [list av1 3 sqlite_autoindex_av1_1 4 \ av2 5 sqlite_autoindex_av2_1 6 av2_i1 7 av2_i2 8 \ av4 12 av4_i1 13 av4_i2 9 av4_i3 10 av4_i4 11 \ ] do_test autovacuum-2.5.3.1 { execsql { SELECT * FROM av1 WHERE a = 'av1 a'; } } {{av1 a} {av1 b} {av1 c}} do_test autovacuum-2.5.3.2 { execsql { SELECT * FROM av2 WHERE a = 'av2 a' AND b = 'av2 b' AND c = 'av2 c' } } {{av2 a} {av2 b} {av2 c}} do_test autovacuum-2.5.3.3 { execsql { SELECT * FROM av4 WHERE a = 'av4 a' AND b = 'av4 b' AND c = 'av4 c'; } } {{av4 a} {av4 b} {av4 c}} # Drop table av1: # Step 1: Delete av1 (root page 4). Root-page of av4_i1 fills the gap. # Step 2: Delete sqlite_autoindex_av1_1 (root page 3). Move av4 to the gap. do_test autovacuum-2.5.4 { execsql { DROP TABLE av1; SELECT name, rootpage FROM sqlite_master; } } [list av2 5 sqlite_autoindex_av2_1 6 av2_i1 7 av2_i2 8 \ av4 3 av4_i1 4 av4_i2 9 av4_i3 10 av4_i4 11 \ ] do_test autovacuum-2.5.4.2 { execsql { SELECT * FROM av2 WHERE a = 'av2 a' AND b = 'av2 b' AND c = 'av2 c' } } {{av2 a} {av2 b} {av2 c}} do_test autovacuum-2.5.4.4 { execsql { SELECT * FROM av4 WHERE a = 'av4 a' AND b = 'av4 b' AND c = 'av4 c'; } } {{av4 a} {av4 b} {av4 c}} # Drop table av4: # Step 1: Delete av4_i4. # Step 2: Delete av4_i3. # Step 3: Delete av4_i2. # Step 4: Delete av4_i1. av2_i2 replaces it. # Step 5: Delete av4. av2_i1 replaces it. do_test autovacuum-2.5.5 { execsql { DROP TABLE av4; SELECT name, rootpage FROM sqlite_master; } } [list av2 5 sqlite_autoindex_av2_1 6 av2_i1 3 av2_i2 4] do_test autovacuum-2.5.5.2 { execsql { SELECT * FROM av2 WHERE a = 'av2 a' AND b = 'av2 b' AND c = 'av2 c' } } {{av2 a} {av2 b} {av2 c}} #-------------------------------------------------------------------------- # Test cases autovacuum-3.* test the operation of the "PRAGMA auto_vacuum" # command. # do_test autovacuum-3.1 { execsql { PRAGMA auto_vacuum; } } {1} do_test autovacuum-3.2 { db close sqlite3 db test.db execsql { PRAGMA auto_vacuum; } } {1} do_test autovacuum-3.3 { execsql { PRAGMA auto_vacuum = 0; PRAGMA auto_vacuum; } } {1} do_test autovacuum-3.4 { db close file delete -force test.db sqlite3 db test.db execsql { PRAGMA auto_vacuum; } } $AUTOVACUUM do_test autovacuum-3.5 { execsql { CREATE TABLE av1(x); PRAGMA auto_vacuum; } } $AUTOVACUUM do_test autovacuum-3.6 { execsql { PRAGMA auto_vacuum = 1; PRAGMA auto_vacuum; } } $AUTOVACUUM do_test autovacuum-3.7 { execsql { DROP TABLE av1; } file_pages } [expr $AUTOVACUUM?1:2] #----------------------------------------------------------------------- # Test that if a statement transaction around a CREATE INDEX statement is # rolled back no corruption occurs. # do_test autovacuum-4.1 { execsql { CREATE TABLE av1(a, b); BEGIN; } for {set i 0} {$i<100} {incr i} { execsql "INSERT INTO av1 VALUES($i, '[string repeat X 200]');" } execsql "INSERT INTO av1 VALUES(99, '[string repeat X 200]');" execsql { SELECT sum(a) FROM av1; } } {5049.0} do_test autovacuum-4.2 { catchsql { CREATE UNIQUE INDEX av1_i ON av1(a); } } {1 {indexed columns are not unique}} do_test autovacuum-4.3 { execsql { SELECT sum(a) FROM av1; } } {5049.0} do_test autovacuum-4.4 { execsql { COMMIT; } } {} finish_test