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Annotation of embedaddon/sqlite3/test/sidedelete.test, revision 1.1

1.1     ! misho       1: # 2007 Dec 12
        !             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: # This file contains test cases for stressing database
        !            13: # changes that involve side effects that delete rows from
        !            14: # the table being changed.  Ticket #2832 shows that in
        !            15: # older versions of SQLite that behavior was implemented
        !            16: # incorrectly and resulted in corrupt database files.
        !            17: #
        !            18: # $Id: sidedelete.test,v 1.2 2008/08/04 03:51:24 danielk1977 Exp $
        !            19: #
        !            20: 
        !            21: set testdir [file dirname $argv0]
        !            22: source $testdir/tester.tcl
        !            23: 
        !            24: # The sequence table is created to store a sequence of integers
        !            25: # starting with 1.  This is used to reinitialize other tables
        !            26: # as part of other tests.
        !            27: #
        !            28: do_test sidedelete-1.1 {
        !            29:   execsql {
        !            30:     CREATE TABLE sequence(a INTEGER PRIMARY KEY);
        !            31:     INSERT INTO sequence VALUES(1);
        !            32:     INSERT INTO sequence VALUES(2);
        !            33:   }
        !            34:   for {set i 0} {$i<8} {incr i} {
        !            35:     execsql {
        !            36:       INSERT INTO sequence SELECT a+(SELECT max(a) FROM sequence) FROM sequence;
        !            37:     }
        !            38:   }
        !            39:   execsql {SELECT count(*) FROM sequence}
        !            40: } {512}
        !            41: 
        !            42: # Make a series of changes using an UPDATE OR REPLACE and a
        !            43: # correlated subquery.  This would cause database corruption
        !            44: # prior to the fix for ticket #2832.
        !            45: #
        !            46: do_test sidedelete-2.0 {
        !            47:   execsql {
        !            48:     CREATE TABLE t1(a PRIMARY KEY, b);
        !            49:     CREATE TABLE chng(a PRIMARY KEY, b);
        !            50:     SELECT count(*) FROM t1;
        !            51:     SELECT count(*) FROM chng;
        !            52:   }
        !            53: } {0 0}
        !            54: for {set i 2} {$i<=100} {incr i} {
        !            55:   set n [expr {($i+2)/2}]
        !            56:   do_test sidedelete-2.$i.1 {
        !            57:     execsql {
        !            58:       DELETE FROM t1;
        !            59:       INSERT INTO t1 SELECT a, a FROM sequence WHERE a<=$i;
        !            60:       DELETE FROM chng;
        !            61:       INSERT INTO chng SELECT a*2, a*2+1 FROM sequence WHERE a<=$i/2;
        !            62:       UPDATE OR REPLACE t1 SET a=(SELECT b FROM chng WHERE a=t1.a);
        !            63:       SELECT count(*), sum(a) FROM t1;
        !            64:     }
        !            65:   } [list $n [expr {$n*$n-1}]]
        !            66:   integrity_check sidedelete-2.$i.2
        !            67: }
        !            68: 
        !            69: # This will cause stacks leaks but not database corruption prior
        !            70: # to the #2832 fix.
        !            71: #
        !            72: do_test sidedelete-3.0 {
        !            73:   execsql {
        !            74:      DROP TABLE t1;
        !            75:      CREATE TABLE t1(a PRIMARY KEY);
        !            76:      SELECT * FROM t1;
        !            77:   }
        !            78: } {}
        !            79: for {set i 1} {$i<=100} {incr i} {
        !            80:   set n [expr {($i+1)/2}]
        !            81:   do_test sidedelete-3.$i.1 {
        !            82:     execsql {
        !            83:       DELETE FROM t1;
        !            84:       INSERT INTO t1 SELECT a FROM sequence WHERE a<=$i;
        !            85:       UPDATE OR REPLACE t1 SET a=a+1;
        !            86:       SELECT count(*), sum(a) FROM t1;
        !            87:     }
        !            88:   } [list $n [expr {$n*($n+1)}]]
        !            89:   integrity_check sidedelete-3.$i.2
        !            90: }
        !            91: 
        !            92: finish_test