# 2011 November 16 # # 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 contains test cases for sqlite3_db_cacheflush API. # set testdir [file dirname $argv0] source $testdir/tester.tcl set testprefix cacheflush test_set_config_pagecache 0 0 # Run the supplied SQL on a copy of the database currently stored on # disk in file $dbfile. proc diskquery {dbfile sql} { forcecopy $dbfile dq.db sqlite3 dq dq.db set res [execsql $sql dq] dq close set res } # Simplest possible test. # do_execsql_test 1.1.0 { CREATE TABLE t1(a, b); INSERT INTO t1 VALUES(1, 2); BEGIN; INSERT INTO t1 VALUES(3, 4); } do_test 1.1.1 { diskquery test.db { SELECT * FROM t1 } } {1 2} do_test 1.1.2 { sqlite3_db_cacheflush db diskquery test.db { SELECT * FROM t1 } } {1 2 3 4} # Test that multiple pages may be flushed to disk. # do_execsql_test 1.2.0 { COMMIT; CREATE TABLE t2(a, b); BEGIN; INSERT INTO t1 VALUES(5, 6); INSERT INTO t2 VALUES('a', 'b'); } do_test 1.2.1 { diskquery test.db { SELECT * FROM t1; SELECT * FROM t2; } } {1 2 3 4} do_test 1.2.2 { sqlite3_db_cacheflush db diskquery test.db { SELECT * FROM t1; SELECT * FROM t2; } } {1 2 3 4 5 6 a b} # Test that pages with nRef!=0 are not flushed to disk. # do_execsql_test 1.3.0 { COMMIT; CREATE TABLE t3(a, b); BEGIN; INSERT INTO t1 VALUES(7, 8); INSERT INTO t2 VALUES('c', 'd'); INSERT INTO t3 VALUES('i', 'ii'); } do_test 1.3.1 { diskquery test.db { SELECT * FROM t1; SELECT * FROM t2; SELECT * FROM t3; } } {1 2 3 4 5 6 a b} do_test 1.3.2 { db eval { SELECT a FROM t1 } { if {$a==3} { sqlite3_db_cacheflush db } } diskquery test.db { SELECT * FROM t1; SELECT * FROM t2; SELECT * FROM t3; } } {1 2 3 4 5 6 a b c d i ii} do_test 1.3.2 { sqlite3_db_cacheflush db diskquery test.db { SELECT * FROM t1; SELECT * FROM t2; SELECT * FROM t3; } } {1 2 3 4 5 6 7 8 a b c d i ii} # Check that SQLITE_BUSY is returned if pages cannot be flushed due to # conflicting read locks. # do_execsql_test 1.4.0 { COMMIT; BEGIN; INSERT INTO t1 VALUES(9, 10); } do_test 1.4.1 { sqlite3 db2 test.db db2 eval { BEGIN; SELECT * FROM t1; } diskquery test.db { SELECT * FROM t1; } } {1 2 3 4 5 6 7 8} do_test 1.4.2 { list [catch { sqlite3_db_cacheflush db } msg] $msg } {1 {database is locked}} do_test 1.4.3 { diskquery test.db { SELECT * FROM t1; } } {1 2 3 4 5 6 7 8} do_test 1.4.4 { db2 close sqlite3_db_cacheflush db diskquery test.db { SELECT * FROM t1; } } {1 2 3 4 5 6 7 8 9 10} do_execsql_test 1.4.5 { COMMIT } #------------------------------------------------------------------------- # Test that ATTACHed database caches are also flushed. # forcedelete test.db2 do_execsql_test 2.1.0 { ATTACH 'test.db2' AS aux; CREATE TABLE aux.t4(x, y); INSERT INTO t4 VALUES('A', 'B'); BEGIN; INSERT INTO t1 VALUES(11, 12); INSERT INTO t4 VALUES('C', 'D'); } do_test 2.1.1 { diskquery test.db { SELECT * FROM t1; } } {1 2 3 4 5 6 7 8 9 10} do_test 2.1.2 { diskquery test.db2 { SELECT * FROM t4; } } {A B} do_test 2.1.3 { sqlite3_db_cacheflush db diskquery test.db { SELECT * FROM t1; } } {1 2 3 4 5 6 7 8 9 10 11 12} do_test 2.1.4 { sqlite3_db_cacheflush db diskquery test.db2 { SELECT * FROM t4; } } {A B C D} do_execsql_test 2.1.5 { COMMIT } # And that hitting an SQLITE_BUSY when flushing "main" does not stop # SQLite from going on to flush "aux". # do_execsql_test 2.2.0 { BEGIN; INSERT INTO t1 VALUES(13, 14); INSERT INTO t4 VALUES('E', 'F'); } do_test 2.2.1 { diskquery test.db { SELECT * FROM t1; } } {1 2 3 4 5 6 7 8 9 10 11 12} do_test 2.2.2 { diskquery test.db2 { SELECT * FROM t4; } } {A B C D} do_test 2.2.3 { sqlite3 db2 test.db execsql { BEGIN; SELECT * FROM t1; } db2 list [catch { sqlite3_db_cacheflush db } msg] $msg } {1 {database is locked}} do_test 2.2.4 { diskquery test.db { SELECT * FROM t1; } } {1 2 3 4 5 6 7 8 9 10 11 12} do_test 2.2.5 { diskquery test.db2 { SELECT * FROM t4; } } {A B C D E F} do_test 2.2.6 { db2 close sqlite3_db_cacheflush db diskquery test.db { SELECT * FROM t1; } } {1 2 3 4 5 6 7 8 9 10 11 12 13 14} do_execsql_test 2.2.7 { COMMIT } #------------------------------------------------------------------------- # Test that nothing terrible happens if sqlite3_db_cacheflush() is # called on an in-memory database. # do_test 3.0 { db close sqlite3 db :memory: db eval { CREATE TABLE t1(x PRIMARY KEY); CREATE TABLE t2(y PRIMARY KEY); BEGIN; INSERT INTO t1 VALUES(randomblob(100)); INSERT INTO t2 VALUES(randomblob(100)); INSERT INTO t1 VALUES(randomblob(100)); INSERT INTO t2 VALUES(randomblob(100)); } sqlite3_db_cacheflush db } {} do_execsql_test 3.1 { PRAGMA integrity_check } ok do_execsql_test 3.2 { COMMIT } do_execsql_test 3.3 { PRAGMA integrity_check } ok do_execsql_test 3.4 { SELECT count(*) FROM t1; SELECT count(*) FROM t2; } {2 2} #------------------------------------------------------------------------- # Test that calling sqlite3_db_cacheflush() does not interfere with # savepoint transactions. # do_test 4.0 { reset_db execsql { CREATE TABLE ta(a, aa); CREATE TABLE tb(b, bb); INSERT INTO ta VALUES('a', randomblob(500)); INSERT INTO tb VALUES('b', randomblob(500)); BEGIN; UPDATE ta SET a = 'A'; SAVEPOINT one; UPDATE tb SET b = 'B'; } sqlite3_db_cacheflush db diskquery test.db { SELECT a FROM ta; SELECT b FROM tb; } } {A B} do_test 4.1 { execsql { ROLLBACK TO one; } sqlite3_db_cacheflush db diskquery test.db { SELECT a FROM ta; SELECT b FROM tb; } } {A b} do_test 4.2 { execsql { INSERT INTO tb VALUES('c', randomblob(10)); INSERT INTO tb VALUES('d', randomblob(10)); INSERT INTO tb VALUES('e', randomblob(10)); } sqlite3_db_cacheflush db diskquery test.db { SELECT a FROM ta; SELECT b FROM tb; } } {A b c d e} do_test 4.3 { execsql { SAVEPOINT two; UPDATE tb SET b = upper(b); } sqlite3_db_cacheflush db diskquery test.db { SELECT a FROM ta; SELECT b FROM tb; } } {A B C D E} do_test 4.4 { execsql { ROLLBACK TO two; } sqlite3_db_cacheflush db diskquery test.db { SELECT a FROM ta; SELECT b FROM tb; } } {A b c d e} do_test 4.4 { execsql { ROLLBACK TO one; } sqlite3_db_cacheflush db diskquery test.db { SELECT a FROM ta; SELECT b FROM tb; } } {A b} do_test 4.5 { execsql { ROLLBACK; SELECT a FROM ta; SELECT b FROM tb; } } {a b} test_restore_config_pagecache finish_test