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123 lines
3.1 KiB
Text
123 lines
3.1 KiB
Text
# 2009 March 24
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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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set testdir [file dirname $argv0]
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source $testdir/tester.tcl
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ifcapable {!pager_pragmas} {
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finish_test
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return
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}
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#-------------------------------------------------------------------------
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# The tests in this file check that the following two bugs (both now fixed)
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# do not reappear.
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#
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# jrnlmode2-1.*: Demonstrate bug #3745:
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#
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# In persistent journal mode, if:
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#
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# * There is a persistent journal in the file-system, AND
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# * there exists a connection with a shared lock on the db file,
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#
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# then a second connection cannot open a read-transaction on the database.
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# The reason is because while determining that the persistent-journal is
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# not a hot-journal, SQLite currently grabs an exclusive lock on the
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# database file. If this fails because another connection has a shared
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# lock, then SQLITE_BUSY is returned to the user.
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#
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# jrnlmode2-2.*: Demonstrate bug #3751:
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#
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# If a connection is opened in SQLITE_OPEN_READONLY mode, the underlying
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# unix file descriptor on the database file is opened in O_RDONLY mode.
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#
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# When SQLite queries the database file for the schema in order to compile
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# the SELECT statement, it sees the empty journal in the file system, it
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# attempts to obtain an exclusive lock on the database file (this is a
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# bug). The attempt to obtain an exclusive (write) lock on a read-only file
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# fails at the OS level. Under unix, fcntl() reports an EBADF - "Bad file
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# descriptor" - error.
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#
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do_test jrnlmode2-1.1 {
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execsql {
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PRAGMA journal_mode = persist;
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CREATE TABLE t1(a, b);
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INSERT INTO t1 VALUES(1, 2);
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}
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} {persist}
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do_test jrnlmode2-1.2 {
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file exists test.db-journal
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} {1}
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do_test jrnlmode2-1.3 {
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sqlite3 db2 test.db
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execsql { SELECT * FROM t1 } db2
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} {1 2}
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do_test jrnlmode2-1.4 {
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execsql {
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INSERT INTO t1 VALUES(3, 4);
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}
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execsql {
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BEGIN;
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SELECT * FROM t1;
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}
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execsql { PRAGMA lock_status }
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} {main shared temp closed}
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do_test jrnlmode2-1.5 {
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file exists test.db-journal
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} {1}
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do_test jrnlmode2-1.6 {
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catchsql { SELECT * FROM t1 } db2
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} {0 {1 2 3 4}}
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do_test jrnlmode2-1.7 {
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execsql { COMMIT }
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catchsql { SELECT * FROM t1 } db2
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} {0 {1 2 3 4}}
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do_test jrnlmode2-2.1 {
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db2 close
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execsql { PRAGMA journal_mode = truncate }
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execsql { INSERT INTO t1 VALUES(5, 6) }
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} {}
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do_test jrnlmode2-2.2 {
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file exists test.db-journal
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} {1}
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do_test jrnlmode2-2.3 {
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file size test.db-journal
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} {0}
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do_test jrnlmode2-2.4 {
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sqlite3 db2 test.db -readonly 1
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catchsql { SELECT * FROM t1 } db2
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} {0 {1 2 3 4 5 6}}
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do_test jrnlmode2-2.5 {
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db close
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file delete test.db-journal
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} {}
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do_test jrnlmode2-2.6 {
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sqlite3 db2 test.db -readonly 1
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catchsql { SELECT * FROM t1 } db2
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} {0 {1 2 3 4 5 6}}
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catch { db2 close }
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finish_test
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