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Annotation of embedaddon/sqlite3/test/tkt2767.test, revision 1.1

1.1     ! misho       1: # 2007 Oct 3
        !             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 is to test that ticket #2767 has been fixed.
        !            13: # Ticket #2767 is for a VDBE stack overflow on BEFORE
        !            14: # triggers that run RAISE(IGNORE).
        !            15: #
        !            16: # $Id: tkt2767.test,v 1.3 2009/04/07 14:14:23 danielk1977 Exp $
        !            17: #
        !            18: 
        !            19: set testdir [file dirname $argv0]
        !            20: source $testdir/tester.tcl
        !            21: 
        !            22: ifcapable !trigger { finish_test ; return }
        !            23: 
        !            24: do_test tkt2767-1.1 {
        !            25:   execsql {
        !            26:     -- Construct a table with many rows of data
        !            27:     CREATE TABLE t1(x);
        !            28:     INSERT INTO t1 VALUES(1);
        !            29:     INSERT INTO t1 VALUES(2);
        !            30:     INSERT INTO t1 SELECT x+2 FROM t1;
        !            31:     INSERT INTO t1 SELECT x+4 FROM t1;
        !            32:     INSERT INTO t1 SELECT x+8 FROM t1;
        !            33:     INSERT INTO t1 SELECT x+16 FROM t1;
        !            34: 
        !            35:     -- BEFORE triggers that invoke raise(ignore).  The effect of
        !            36:     -- these triggers should be to make INSERTs, UPDATEs, and DELETEs
        !            37:     -- into no-ops.
        !            38:     CREATE TRIGGER r1 BEFORE UPDATE ON t1 BEGIN
        !            39:       SELECT raise(ignore);
        !            40:     END;
        !            41:     CREATE TRIGGER r2 BEFORE DELETE ON t1 BEGIN
        !            42:       SELECT raise(ignore);
        !            43:     END;
        !            44:     CREATE TRIGGER r3 BEFORE INSERT ON t1 BEGIN
        !            45:       SELECT raise(ignore);
        !            46:     END;
        !            47: 
        !            48:     -- Verify the table content
        !            49:     SELECT count(*), sum(x) FROM t1;
        !            50:   }
        !            51: } {32 528}
        !            52: 
        !            53: # Try to delete all elements of the table.  This will invoke the
        !            54: # DELETE trigger 32 times, which should overflow the VDBE stack if
        !            55: # the problem of #2767 is not fixed.  If the problem is fixed, all
        !            56: # the deletes should be no-ops so the table should remain unchanged.
        !            57: #
        !            58: do_test tkt2767-1.2 {
        !            59:   execsql {
        !            60:     DELETE FROM t1 WHERE x>0;
        !            61:     SELECT count(*), sum(x) FROM t1;
        !            62:   }
        !            63: } {32 528}
        !            64: 
        !            65: # Try to update all elements of the table.  This will invoke the
        !            66: # UPDATE trigger 32 times, which should overflow the VDBE stack if
        !            67: # the problem of #2767 is not fixed.  If the problem is fixed, all
        !            68: # the updates should be no-ops so the table should remain unchanged.
        !            69: #
        !            70: do_test tkt2767-1.3 {
        !            71:   execsql {
        !            72:     UPDATE t1 SET x=x+1;
        !            73:     SELECT count(*), sum(x) FROM t1;
        !            74:   }
        !            75: } {32 528}
        !            76: 
        !            77: # Invoke the insert trigger.  The insert trigger was working
        !            78: # even prior to the fix of #2767.  But it seems good to go ahead
        !            79: # and verify that it works.
        !            80: #
        !            81: do_test tkt2767-1.4 {
        !            82:   execsql {
        !            83:     INSERT INTO t1 SELECT x+32 FROM t1;
        !            84:     SELECT count(*), sum(x) FROM t1;
        !            85:   }
        !            86: } {32 528}
        !            87: 
        !            88: 
        !            89: 
        !            90: finish_test