1 # 2008 April 15

     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 # This file implements regression tests for SQLite library. Specifically,

    12 # it tests updating tables with constraints within a trigger.  Ticket #3055.

    13 #

    14 

    15 set testdir [file dirname $argv0]

    16 source $testdir/tester.tcl

    17 ifcapable {!trigger} {

    18   finish_test

    19   return

    20 }

    21 

    22 # Create test tables with constraints.

    23 #

    24 do_test triggerB-1.1 {

    25   execsql {

    26     CREATE TABLE x(x INTEGER PRIMARY KEY, y INT NOT NULL);

    27     INSERT INTO x(y) VALUES(1);

    28     INSERT INTO x(y) VALUES(1);

    29     CREATE TEMP VIEW vx AS SELECT x, y, 0 AS yy FROM x;

    30     CREATE TEMP TRIGGER tx INSTEAD OF UPDATE OF y ON vx

    31     BEGIN

    32       UPDATE x SET y = new.y WHERE x = new.x;

    33     END;

    34     SELECT * FROM vx;

    35   }

    36 } {1 1 0 2 1 0}

    37 do_test triggerB-1.2 {

    38   execsql {

    39     UPDATE vx SET y = yy;

    40     SELECT * FROM vx;

    41   }

    42 } {1 0 0 2 0 0}

    43 

    44 # Added 2008-08-22:

    45 #

    46 # Name resolution within triggers.

    47 #

    48 do_test triggerB-2.1 {

    49   catchsql {

    50     CREATE TRIGGER ty AFTER INSERT ON x BEGIN

    51        SELECT wen.x; -- Unrecognized name

    52     END;

    53     INSERT INTO x VALUES(1,2);

    54   }

    55 } {1 {no such column: wen.x}}

    56 do_test triggerB-2.2 {

    57   catchsql {

    58     CREATE TRIGGER tz AFTER UPDATE ON x BEGIN

    59        SELECT dlo.x; -- Unrecognized name

    60     END;

    61     UPDATE x SET y=y+1;

    62   }

    63 } {1 {no such column: dlo.x}}

    64 

    65 do_test triggerB-2.3 {

    66   execsql {

    67     CREATE TABLE t2(a INTEGER PRIMARY KEY, b);

    68     INSERT INTO t2 VALUES(1,2);

    69     CREATE TABLE changes(x,y);

    70     CREATE TRIGGER r1t2 AFTER UPDATE ON t2 BEGIN

    71       INSERT INTO changes VALUES(new.a, new.b);

    72     END;

    73   }

    74   execsql {

    75     UPDATE t2 SET a=a+10;

    76     SELECT * FROM changes;

    77   }

    78 } {11 2}

    79 do_test triggerB-2.4 {

    80   execsql {

    81     CREATE TRIGGER r2t2 AFTER DELETE ON t2 BEGIN

    82       INSERT INTO changes VALUES(old.a, old.c);

    83     END;

    84   }

    85   catchsql {

    86     DELETE FROM t2;

    87   }

    88 } {1 {no such column: old.c}}

    89 

    90 # Triggers maintain a mask of columns from the invoking table that are

    91 # used in the trigger body as NEW.column or OLD.column.  That mask is then

    92 # used to reduce the amount of information that needs to be loaded into

    93 # the NEW and OLD pseudo-tables at run-time.

    94 #

    95 # These tests cases check the logic for when there are many columns - more

    96 # than will fit in a bitmask.

    97 #

    98 do_test triggerB-3.1 {

    99   execsql {

   100     CREATE TABLE t3(

   101        c0,  c1,  c2,  c3,  c4,  c5,  c6,  c7,  c8,  c9,

   102        c10, c11, c12, c13, c14, c15, c16, c17, c18, c19,

   103        c20, c21, c22, c23, c24, c25, c26, c27, c28, c29,

   104        c30, c31, c32, c33, c34, c35, c36, c37, c38, c39,

   105        c40, c41, c42, c43, c44, c45, c46, c47, c48, c49,

   106        c50, c51, c52, c53, c54, c55, c56, c57, c58, c59,

   107        c60, c61, c62, c63, c64, c65

   108     );

   109     CREATE TABLE t3_changes(colnum, oldval, newval);

   110     INSERT INTO t3 VALUES(

   111        'a0', 'a1', 'a2', 'a3', 'a4', 'a5', 'a6', 'a7', 'a8', 'a9',

   112        'a10','a11','a12','a13','a14','a15','a16','a17','a18','a19',

   113        'a20','a21','a22','a23','a24','a25','a26','a27','a28','a29',

   114        'a30','a31','a32','a33','a34','a35','a36','a37','a38','a39',

   115        'a40','a41','a42','a43','a44','a45','a46','a47','a48','a49',

   116        'a50','a51','a52','a53','a54','a55','a56','a57','a58','a59',

   117        'a60','a61','a62','a63','a64','a65'

   118     );

   119   }

   120   for {set i 0} {$i<=65} {incr i} {

   121     set sql [subst {

   122       CREATE TRIGGER t3c$i AFTER UPDATE ON t3

   123          WHEN old.c$i!=new.c$i BEGIN

   124           INSERT INTO t3_changes VALUES($i, old.c$i, new.c$i);

   125       END

   126     }]

   127     db eval $sql

   128   }

   129   execsql {

   130     SELECT * FROM t3_changes

   131   }

   132 } {}

   133 for {set i 0} {$i<=64} {incr i} {

   134   do_test triggerB-3.2.$i.1 [subst {

   135     execsql {

   136       UPDATE t3 SET c$i='b$i';

   137       SELECT * FROM t3_changes ORDER BY rowid DESC LIMIT 1;

   138     }

   139   }] [subst {$i a$i b$i}]

   140   do_test triggerB-3.2.$i.2 [subst {

   141     execsql {

   142       SELECT count(*) FROM t3_changes

   143     }

   144   }] [expr {$i+1}]

   145   do_test triggerB-3.2.$i.2 [subst {

   146     execsql {

   147       SELECT * FROM t3_changes WHERE colnum=$i

   148     }

   149   }] [subst {$i a$i b$i}]

   150 }

   151   

   152 

   153 finish_test