# 2012 May 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. # #*********************************************************************** # # The tests in this file are intended to show that closing one database # connection to a shared-cache while there exist other connections (a) # does not cause the schema to be reloaded and (b) does not cause any # other problems. # set testdir [file dirname $argv0] source $testdir/tester.tcl ifcapable !shared_cache { finish_test ; return } set testprefix shared8 db close set ::enable_shared_cache [sqlite3_enable_shared_cache 1] do_test 0.0 { sqlite3_enable_shared_cache } {1} proc roman {n} { array set R {1 i 2 ii 3 iii 4 iv 5 v 6 vi 7 vii 8 viii 9 ix 10 x} set R($n) } #------------------------------------------------------------------------- # The following tests work as follows: # # 1.0: Open connection [db1] and populate the database. # # 1.1: Using "PRAGMA writable_schema", destroy the database schema on # disk. The schema is still in memory, so it is possible to keep # using it, but any attempt to reload it from disk will fail. # # 1.3-4: Open connection db2. Check that it can see the db schema. Then # close db1 and check that db2 still works. This shows that closing # db1 did not reset the in-memory schema. # # 1.5-7: Similar to 1.3-4. # # 1.8: Close all database connections (deleting the in-memory schema). # Then open a new connection and check that it cannot read the db. # do_test 1.0 { sqlite3 db1 test.db db1 func roman roman execsql { CREATE TABLE t1(a, b); INSERT INTO t1 VALUES(1, 1); INSERT INTO t1 VALUES(2, 2); INSERT INTO t1 VALUES(3, 3); INSERT INTO t1 VALUES(4, 4); CREATE VIEW v1 AS SELECT a, roman(b) FROM t1; SELECT * FROM v1; } db1 } {1 i 2 ii 3 iii 4 iv} do_test 1.1 { sqlite3_db_config db1 DEFENSIVE 0 execsql { PRAGMA writable_schema = 1; DELETE FROM sqlite_master WHERE 1; PRAGMA writable_schema = 0; SELECT * FROM sqlite_master; } db1 } {} do_test 1.2 { execsql { SELECT * FROM v1 } db1 } {1 i 2 ii 3 iii 4 iv} do_test 1.3 { sqlite3 db2 test.db db2 func roman roman execsql { SELECT * FROM v1 } db2 } {1 i 2 ii 3 iii 4 iv} do_test 1.4 { db1 close execsql { SELECT * FROM v1 } db2 } {1 i 2 ii 3 iii 4 iv} do_test 1.5 { sqlite3 db3 test.db db3 func roman roman execsql { SELECT * FROM v1 } db3 } {1 i 2 ii 3 iii 4 iv} do_test 1.6 { execsql { SELECT * FROM v1 } db2 } {1 i 2 ii 3 iii 4 iv} do_test 1.7 { db2 close execsql { SELECT * FROM v1 } db3 } {1 i 2 ii 3 iii 4 iv} do_test 1.8 { db3 close sqlite3 db4 test.db catchsql { SELECT * FROM v1 } db4 } {1 {no such table: v1}} foreach db {db1 db2 db3 db4} { catch { $db close } } sqlite3_enable_shared_cache $::enable_shared_cache finish_test