author | Pat Downey <patd@symbian.org> |
Wed, 01 Sep 2010 12:39:58 +0100 | |
branch | RCL_3 |
changeset 45 | cc28652e0254 |
parent 0 | 08ec8eefde2f |
permissions | -rw-r--r-- |
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# 2008 July 11 |
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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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# This file implements regression tests for SQLite library. |
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# |
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# This file experiments with recursion using the "test_eval()" SQL function |
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# in order to make sure that SQLite is reentrant. |
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# |
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# $Id: eval.test,v 1.1 2008/07/11 21:02:54 drh Exp $ |
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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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# Create a table to work with. |
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# |
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do_test eval-1.1 { |
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execsql { |
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CREATE TABLE t1(x INTEGER PRIMARY KEY); |
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INSERT INTO t1 VALUES(1); |
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INSERT INTO t1 VALUES(2); |
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INSERT INTO t1 SELECT x+2 FROM t1; |
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INSERT INTO t1 SELECT x+4 FROM t1; |
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INSERT INTO t1 SELECT x+8 FROM t1; |
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INSERT INTO t1 SELECT x+16 FROM t1; |
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INSERT INTO t1 SELECT x+32 FROM t1; |
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INSERT INTO t1 SELECT x+64 FROM t1; |
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INSERT INTO t1 SELECT x+128 FROM t1; |
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INSERT INTO t1 SELECT x+256 FROM t1; |
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SELECT count(*), max(x) FROM t1; |
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} |
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} {512 512} |
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do_test eval-1.2 { |
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execsql { |
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SELECT x, test_eval('SELECT max(x) FROM t1 WHERE x<' || x) FROM t1 LIMIT 5 |
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} |
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} {1 {} 2 1 3 2 4 3 5 4} |
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# Delete a row out from under a read cursor in the middle of |
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# collecting the arguments for a single row in a result set. |
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# Verify that subsequent rows come out as NULL. |
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# |
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do_test eval-2.1 { |
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execsql { |
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CREATE TABLE t2(x,y); |
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INSERT INTO t2 SELECT x, x+1 FROM t1 WHERE x<5; |
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SELECT x, test_eval('DELETE FROM t2 WHERE x='||x), y FROM t2; |
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} |
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} {1 {} {} 2 {} {} 3 {} {} 4 {} {}} |
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do_test eval-2.2 { |
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execsql { |
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SELECT * FROM t2 |
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} |
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} {} |
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# Modify a row while it is being read. |
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# |
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do_test eval-3.1 { |
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execsql { |
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INSERT INTO t2 SELECT x, x+1 FROM t1 WHERE x<5; |
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SELECT x, test_eval('UPDATE t2 SET y=y+100 WHERE x='||x), y FROM t2; |
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} |
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} {1 {} 102 2 {} 103 3 {} 104 4 {} 105} |
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finish_test |