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