111 lines
3.2 KiB
Plaintext
111 lines
3.2 KiB
Plaintext
# 2009 December 29
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#
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# The author disclaims copyright to this source code. In place of
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# a legal notice', here is a blessing:
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#
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# May you do good and not evil.
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# May you find forgiveness for yourself and forgive others.
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# May you share freely, never taking more than you give.
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#
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#***********************************************************************
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#
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# This file tests the effects of SQL variable references embedded in
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# triggers. If the user attempts to create such a trigger, it is an
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# error. However, if an existing trigger definition is read from
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# the sqlite_master table, the variable reference always evaluates
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# to NULL.
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#
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set testdir [file dirname $argv0]
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source $testdir/tester.tcl
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ifcapable {!trigger} {
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finish_test
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return
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}
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set testprefix triggerE
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do_execsql_test 1.0 {
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CREATE TABLE t1(a, b);
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CREATE TABLE t2(c, d);
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CREATE TABLE t3(e, f);
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}
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# forcedelete test.db2
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# do_execsql_test 1.1 {
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# ATTACH 'test.db2' AS aux;
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# CREATE TABLE aux.t4(x);
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# INSERT INTO aux.t4 VALUES(5);
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#
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# CREATE TRIGGER tr1 AFTER INSERT ON t1 WHEN new.a IN (SELECT x FROM aux.t4)
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# BEGIN
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# SELECT 1;
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# END;
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# }
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# do_execsql_test 1.2 { INSERT INTO t1 VALUES(1,1); }
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# do_execsql_test 1.3 { INSERT INTO t1 VALUES(5,5); }
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#-------------------------------------------------------------------------
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# Attempt to create various triggers that use bound variables.
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#
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set errmsg "trigger cannot use variables"
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foreach {tn defn} {
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1 { AFTER INSERT ON t1 WHEN new.a = ? BEGIN SELECT 1; END; }
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2 { BEFORE DELETE ON t1 BEGIN SELECT ?; END; }
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3 { BEFORE DELETE ON t1 BEGIN SELECT * FROM (SELECT * FROM (SELECT ?)); END; }
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5 { BEFORE DELETE ON t1 BEGIN SELECT * FROM t2 GROUP BY ?; END; }
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6 { BEFORE DELETE ON t1 BEGIN SELECT * FROM t2 LIMIT ?; END; }
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7 { BEFORE DELETE ON t1 BEGIN SELECT * FROM t2 ORDER BY ?; END; }
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8 { BEFORE UPDATE ON t1 BEGIN UPDATE t2 SET c = ?; END; }
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9 { BEFORE UPDATE ON t1 BEGIN UPDATE t2 SET c = 1 WHERE d = ?; END; }
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} {
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catchsql {drop trigger tr1}
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do_catchsql_test 1.1.$tn "CREATE TRIGGER tr1 $defn" [list 1 $errmsg]
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do_catchsql_test 1.2.$tn "CREATE TEMP TRIGGER tr1 $defn" [list 1 $errmsg]
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}
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#-------------------------------------------------------------------------
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# Test that variable references within trigger definitions loaded from
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# the sqlite_master table are automatically converted to NULL.
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#
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do_execsql_test 2.1 {
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PRAGMA writable_schema = 1;
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INSERT INTO sqlite_master VALUES('trigger', 'tr1', 't1', 0,
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'CREATE TRIGGER tr1 AFTER INSERT ON t1 BEGIN
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INSERT INTO t2 VALUES(?1, ?2);
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END'
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);
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INSERT INTO sqlite_master VALUES('trigger', 'tr2', 't3', 0,
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'CREATE TRIGGER tr2 AFTER INSERT ON t3 WHEN ?1 IS NULL BEGIN
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UPDATE t2 SET c=d WHERE c IS ?2;
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END'
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);
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}
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db close
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sqlite3 db test.db
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do_execsql_test 2.2.1 {
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INSERT INTO t1 VALUES(1, 2);
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SELECT * FROM t2;
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} {{} {}}
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do_test 2.2.2 {
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set one 3
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execsql {
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DELETE FROM t2;
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INSERT INTO t1 VALUES($one, ?1);
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SELECT * FROM t2;
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}
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} {{} {}}
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do_execsql_test 2.2.3 { SELECT * FROM t1 } {1 2 3 3}
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do_execsql_test 2.3 {
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DELETE FROM t2;
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INSERT INTO t2 VALUES('x', 'y');
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INSERT INTO t2 VALUES(NULL, 'z');
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INSERT INTO t3 VALUES(1, 2);
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SELECT * FROM t3;
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SELECT * FROM t2;
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} {1 2 x y z z}
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finish_test
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