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56 lines
1.4 KiB
Text
56 lines
1.4 KiB
Text
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# 2009 July 2
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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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# $Id: sharedlock.test,v 1.1 2009/07/02 17:21:58 danielk1977 Exp $
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set testdir [file dirname $argv0]
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source $testdir/tester.tcl
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db close
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ifcapable !shared_cache {
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finish_test
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return
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}
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set ::enable_shared_cache [sqlite3_enable_shared_cache 1]
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sqlite3 db test.db
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sqlite3 db2 test.db
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do_test sharedlock-1.1 {
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execsql {
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CREATE TABLE t1(a, b);
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INSERT INTO t1 VALUES(1, 'one');
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INSERT INTO t1 VALUES(2, 'two');
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}
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} {}
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do_test sharedlock-1.2 {
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set res [list]
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db eval { SELECT * FROM t1 ORDER BY rowid } {
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lappend res $a $b
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if {$a == 1} { catch { db eval "INSERT INTO t1 VALUES(3, 'three')" } }
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# This should fail. Connection [db] has a read-lock on t1, which should
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# prevent connection [db2] from obtaining the write-lock it needs to
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# modify t1. At one point there was a bug causing the previous INSERT
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# to drop the read-lock belonging to [db].
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if {$a == 2} { catch { db2 eval "INSERT INTO t1 VALUES(4, 'four')" } }
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}
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set res
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} {1 one 2 two 3 three}
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db close
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db2 close
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sqlite3_enable_shared_cache $::enable_shared_cache
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finish_test
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