github.com/jdgcs/sqlite3@v1.12.1-0.20210908114423-bc5f96e4dd51/testdata/tcl/trigger6.test (about)

     1  # 2004 December 07
     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.
    12  #
    13  # This file implements tests to make sure expression of an INSERT
    14  # and UPDATE statement are only evaluated once.  See ticket #980.
    15  # If an expression uses a function that has side-effects or which
    16  # is not deterministic (ex: random()) then we want to make sure
    17  # that the same evaluation occurs for the actual INSERT/UPDATE and
    18  # for the NEW.* fields of any triggers that fire.
    19  #
    20  # $Id: trigger6.test,v 1.2 2005/05/05 11:04:50 drh Exp $
    21  
    22  set testdir [file dirname $argv0]
    23  source $testdir/tester.tcl
    24  ifcapable {!trigger} {
    25    finish_test
    26    return
    27  }
    28  
    29  do_test trigger6-1.1 {
    30    execsql {
    31      CREATE TABLE t1(x, y);
    32      CREATE TABLE log(a, b, c);
    33      CREATE TRIGGER r1 BEFORE INSERT ON t1 BEGIN
    34        INSERT INTO log VALUES(1, new.x, new.y);
    35      END;
    36      CREATE TRIGGER r2 BEFORE UPDATE ON t1 BEGIN
    37        INSERT INTO log VALUES(2, new.x, new.y);
    38      END;
    39    }
    40    set ::trigger6_cnt 0
    41    proc trigger6_counter {args} {
    42      incr ::trigger6_cnt
    43      return $::trigger6_cnt
    44    }
    45    db function counter trigger6_counter
    46    execsql {
    47      INSERT INTO t1 VALUES(1,counter());
    48      SELECT * FROM t1;
    49    }
    50  } {1 1}
    51  do_test trigger6-1.2 {
    52    execsql {
    53      SELECT * FROM log;
    54    }
    55  } {1 1 1}
    56  do_test trigger6-1.3 {
    57    execsql {
    58      DELETE FROM t1;
    59      DELETE FROM log;
    60      INSERT INTO t1 VALUES(2,counter(2,3)+4);
    61      SELECT * FROM t1;
    62    }
    63  } {2 6}
    64  do_test trigger6-1.4 {
    65    execsql {
    66      SELECT * FROM log;
    67    }
    68  } {1 2 6}
    69  do_test trigger6-1.5 {
    70    execsql {
    71      DELETE FROM log;
    72      UPDATE t1 SET y=counter(5);
    73      SELECT * FROM t1;
    74    }
    75  } {2 3}
    76  do_test trigger6-1.6 {
    77    execsql {
    78      SELECT * FROM log;
    79    }
    80  } {2 2 3}
    81  
    82  finish_test