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Coverage testing for balance_quick() and balance_deeper(). (CVS 5382)

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FossilOrigin-Name: 491f8f9613d2b886acad2ab8f631a4ec61ad698d
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danielk1977
2008-07-09 11:49:46 +00:00
parent e49b146f30
commit 474b7cc785
4 changed files with 104 additions and 25 deletions
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77
test/ioerr.test
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@ -15,7 +15,7 @@
# The tests in this file use special facilities that are only
# available in the SQLite test fixture.
#
# $Id: ioerr.test,v 1.39 2008/07/08 17:13:59 danielk1977 Exp $
# $Id: ioerr.test,v 1.40 2008/07/09 11:49:48 danielk1977 Exp $
set testdir [file dirname $argv0]
source $testdir/tester.tcl
@ -328,6 +328,81 @@ do_ioerr_test ioerr-12 -ckrefcount true -erc 1 -tclprep {
db eval { INSERT INTO t1 VALUES(randomblob(2000)); }
}
sqlite3_simulate_device -char {} -sectorsize 0
catch {db close}
do_ioerr_test ioerr-13 -ckrefcount true -erc 1 -sqlprep {
PRAGMA auto_vacuum = incremental;
CREATE TABLE t1(x);
CREATE TABLE t2(x);
INSERT INTO t2 VALUES(randomblob(1500));
INSERT INTO t2 SELECT randomblob(1500) FROM t2;
INSERT INTO t2 SELECT randomblob(1500) FROM t2;
INSERT INTO t2 SELECT randomblob(1500) FROM t2;
INSERT INTO t2 SELECT randomblob(1500) FROM t2;
INSERT INTO t2 SELECT randomblob(1500) FROM t2;
INSERT INTO t2 SELECT randomblob(1500) FROM t2;
INSERT INTO t2 SELECT randomblob(1500) FROM t2;
INSERT INTO t2 SELECT randomblob(1500) FROM t2;
INSERT INTO t1 VALUES(randomblob(20));
INSERT INTO t1 SELECT x FROM t1;
INSERT INTO t1 SELECT x FROM t1;
INSERT INTO t1 SELECT x FROM t1;
INSERT INTO t1 SELECT x FROM t1;
INSERT INTO t1 SELECT x FROM t1;
INSERT INTO t1 SELECT x FROM t1; /* 64 entries in t1 */
INSERT INTO t1 SELECT x FROM t1 LIMIT 14; /* 78 entries in t1 */
DELETE FROM t2 WHERE rowid = 3;
} -sqlbody {
-- This statement uses the balance_quick() optimization. The new page
-- is appended to the database file. But the overflow page used by
-- the new record will be positioned near the start of the database
-- file, in the gap left by the "DELETE FROM t2 WHERE rowid=3" statement
-- above.
--
-- The point of this is that the statement wil need to update two pointer
-- map pages. Which introduces another opportunity for an IO error.
--
INSERT INTO t1 VALUES(randomblob(2000));
}
do_ioerr_test ioerr-14 -ckrefcount true -erc 1 -sqlprep {
PRAGMA auto_vacuum = incremental;
CREATE TABLE t1(x);
CREATE TABLE t2(x);
INSERT INTO t2 VALUES(randomblob(1500));
INSERT INTO t2 SELECT randomblob(1500) FROM t2;
INSERT INTO t2 SELECT randomblob(1500) FROM t2;
INSERT INTO t2 SELECT randomblob(1500) FROM t2;
INSERT INTO t2 SELECT randomblob(1500) FROM t2;
INSERT INTO t2 SELECT randomblob(1500) FROM t2;
INSERT INTO t2 SELECT randomblob(1500) FROM t2;
INSERT INTO t2 SELECT randomblob(1500) FROM t2;
INSERT INTO t2 SELECT randomblob(1500) FROM t2;
-- This statement inserts a row into t1 with an overflow page at the
-- end of the file. A long way from its parent (the root of t1).
INSERT INTO t1 VALUES(randomblob(1500));
DELETE FROM t2 WHERE rowid<10;
} -sqlbody {
-- This transaction will cause the root-page of table t1 to divide
-- (by calling balance_deeper()). When it does, the "parent" page of the
-- overflow page inserted in the -sqlprep block above will change and
-- the corresponding pointer map page be updated. This test case attempts
-- to cause an IO error during the pointer map page update.
--
BEGIN;
INSERT INTO t1 VALUES(randomblob(100));
INSERT INTO t1 VALUES(randomblob(100));
INSERT INTO t1 VALUES(randomblob(100));
INSERT INTO t1 VALUES(randomblob(100));
INSERT INTO t1 VALUES(randomblob(100));
INSERT INTO t1 VALUES(randomblob(100));
INSERT INTO t1 VALUES(randomblob(100));
INSERT INTO t1 VALUES(randomblob(100));
INSERT INTO t1 VALUES(randomblob(100));
INSERT INTO t1 VALUES(randomblob(100));
COMMIT;
}
finish_test