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

1.1     ! misho       1: # 2008 July 11
        !             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 experiments with recursion using the "test_eval()" SQL function
        !            14: # in order to make sure that SQLite is reentrant.
        !            15: #
        !            16: # $Id: eval.test,v 1.2 2008/10/13 10:37:50 danielk1977 Exp $
        !            17: 
        !            18: set testdir [file dirname $argv0]
        !            19: source $testdir/tester.tcl
        !            20: 
        !            21: # Create a table to work with.
        !            22: #
        !            23: do_test eval-1.1 {
        !            24:   execsql {
        !            25:     CREATE TABLE t1(x INTEGER PRIMARY KEY); 
        !            26:     INSERT INTO t1 VALUES(1);
        !            27:     INSERT INTO t1 VALUES(2);
        !            28:     INSERT INTO t1 SELECT x+2 FROM t1;
        !            29:     INSERT INTO t1 SELECT x+4 FROM t1;
        !            30:     INSERT INTO t1 SELECT x+8 FROM t1;
        !            31:     INSERT INTO t1 SELECT x+16 FROM t1;
        !            32:     INSERT INTO t1 SELECT x+32 FROM t1;
        !            33:     INSERT INTO t1 SELECT x+64 FROM t1;
        !            34:     INSERT INTO t1 SELECT x+128 FROM t1;
        !            35:     INSERT INTO t1 SELECT x+256 FROM t1;
        !            36:     SELECT count(*), max(x) FROM t1;
        !            37:   }
        !            38: } {512 512}
        !            39: do_test eval-1.2 {
        !            40:   execsql {
        !            41:     SELECT x, test_eval('SELECT max(x) FROM t1 WHERE x<' || x) FROM t1 LIMIT 5
        !            42:   }
        !            43: } {1 {} 2 1 3 2 4 3 5 4}
        !            44: 
        !            45: # Delete a row out from under a read cursor in the middle of
        !            46: # collecting the arguments for a single row in a result set.
        !            47: # Verify that subsequent rows come out as NULL.
        !            48: #
        !            49: do_test eval-2.1 {
        !            50:   execsql {
        !            51:     CREATE TABLE t2(x,y);
        !            52:     INSERT INTO t2 SELECT x, x+1 FROM t1 WHERE x<5;
        !            53:     SELECT x, test_eval('DELETE FROM t2 WHERE x='||x), y FROM t2;
        !            54:   }
        !            55: } {1 {} {} 2 {} {} 3 {} {} 4 {} {}}
        !            56: do_test eval-2.2 {
        !            57:   execsql {
        !            58:     SELECT * FROM t2
        !            59:   }
        !            60: } {}
        !            61: 
        !            62: # Modify a row while it is being read.
        !            63: #
        !            64: do_test eval-3.1 {
        !            65:   execsql {
        !            66:     INSERT INTO t2 SELECT x, x+1 FROM t1 WHERE x<5;
        !            67:     SELECT x, test_eval('UPDATE t2 SET y=y+100 WHERE x='||x), y FROM t2;
        !            68:   }
        !            69: } {1 {} 102 2 {} 103 3 {} 104 4 {} 105}
        !            70: 
        !            71: do_test eval-4.1 {
        !            72:   execsql { SELECT test_eval('SELECT "abcdefghij"') }
        !            73: } {abcdefghij}
        !            74: 
        !            75: finish_test