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Annotation of embedaddon/sqlite3/test/sharedlock.test, revision 1.1.1.1

1.1       misho       1: # 2009 July 2
                      2: #
                      3: # The author disclaims copyright to this source code.  In place of
                      4: # a legal notice, here is a blessing:
                      5: #
                      6: #    May you do good and not evil.
                      7: #    May you find forgiveness for yourself and forgive others.
                      8: #    May you share freely, never taking more than you give.
                      9: #
                     10: #***********************************************************************
                     11: #
                     12: # $Id: sharedlock.test,v 1.1 2009/07/02 17:21:58 danielk1977 Exp $
                     13: 
                     14: set testdir [file dirname $argv0]
                     15: source $testdir/tester.tcl
                     16: db close
                     17: 
                     18: ifcapable !shared_cache {
                     19:   finish_test
                     20:   return
                     21: }
                     22: 
                     23: set ::enable_shared_cache [sqlite3_enable_shared_cache 1]
                     24: sqlite3 db  test.db
                     25: sqlite3 db2 test.db
                     26: 
                     27: do_test sharedlock-1.1 {
                     28:   execsql {
                     29:     CREATE TABLE t1(a, b);
                     30:     INSERT INTO t1 VALUES(1, 'one');
                     31:     INSERT INTO t1 VALUES(2, 'two');
                     32:   }
                     33: } {}
                     34: 
                     35: do_test sharedlock-1.2 {
                     36:   set res [list]
                     37:   db eval { SELECT * FROM t1 ORDER BY rowid } {
                     38:     lappend res $a $b
                     39:     if {$a == 1} { catch { db  eval "INSERT INTO t1 VALUES(3, 'three')" } }
                     40: 
                     41:     # This should fail. Connection [db] has a read-lock on t1, which should
                     42:     # prevent connection [db2] from obtaining the write-lock it needs to
                     43:     # modify t1. At one point there was a bug causing the previous INSERT
                     44:     # to drop the read-lock belonging to [db].
                     45:     if {$a == 2} { catch { db2 eval "INSERT INTO t1 VALUES(4, 'four')"  } }
                     46:   }
                     47:   set res
                     48: } {1 one 2 two 3 three}
                     49: 
                     50: db close
                     51: db2 close
                     52: 
                     53: sqlite3_enable_shared_cache $::enable_shared_cache
                     54: finish_test
                     55: