# 2018-04-28
#
# The author disclaims copyright to this source code. In place of
# a legal notice, here is a blessing:
#
# May you do good and not evil.
# May you find forgiveness for yourself and forgive others.
# May you share freely, never taking more than you give.
#
#***********************************************************************
# Test cases for SQLITE_DBCONFIG_RESET_DATABASE
#
set testdir [file dirname $argv0]
source $testdir/tester.tcl
set testprefix resetdb
ifcapable !vtab||!compound {
finish_test
return
}
# Create a sample database
do_execsql_test 100 {
PRAGMA page_size=4096;
CREATE TABLE t1(a,b);
WITH RECURSIVE c(x) AS (VALUES(1) UNION ALL SELECT x+1 FROM c WHERE x<20)
INSERT INTO t1(a,b) SELECT x, randomblob(300) FROM c;
CREATE INDEX t1a ON t1(a);
CREATE INDEX t1b ON t1(b);
SELECT sum(a), sum(length(b)) FROM t1;
PRAGMA integrity_check;
PRAGMA journal_mode;
PRAGMA page_count;
} {210 6000 ok delete 8}
# Verify that the same content is seen from a separate database connection
sqlite3 db2 test.db
do_test 110 {
execsql {
SELECT sum(a), sum(length(b)) FROM t1;
PRAGMA integrity_check;
PRAGMA journal_mode;
PRAGMA page_count;
} db2
} {210 6000 ok delete 8}
do_test 200 {
# Thoroughly corrupt the database file by overwriting the first
# page with randomness.
catchsql {
UPDATE sqlite_dbpage SET data=randomblob(4096) WHERE pgno=1;
PRAGMA quick_check;
}
} {1 {unsupported file format}}
do_test 201 {
catchsql {
PRAGMA quick_check;
} db2
} {1 {unsupported file format}}
do_test 210 {
# Reset the database file using SQLITE_DBCONFIG_RESET_DATABASE
sqlite3_db_config db RESET_DB 1
db eval VACUUM
sqlite3_db_config db RESET_DB 0
# Verify that the reset took, even on the separate database connection
catchsql {
PRAGMA page_count;
PRAGMA page_size;
PRAGMA quick_check;
PRAGMA journal_mode;
} db2
} {0 {1 4096 ok delete}}
# Delete the old connections and database and start over again
# with a different page size and in WAL mode.
#
db close
db2 close
forcedelete test.db
sqlite3 db test.db
do_execsql_test 300 {
PRAGMA page_size=8192;
PRAGMA journal_mode=WAL;
CREATE TABLE t1(a,b);
WITH RECURSIVE c(x) AS (VALUES(1) UNION ALL SELECT x+1 FROM c WHERE x<20)
INSERT INTO t1(a,b) SELECT x, randomblob(1300) FROM c;
CREATE INDEX t1a ON t1(a);
CREATE INDEX t1b ON t1(b);
SELECT sum(a), sum(length(b)) FROM t1;
PRAGMA integrity_check;
PRAGMA journal_mode;
PRAGMA page_size;
PRAGMA page_count;
} {wal 210 26000 ok wal 8192 12}
sqlite3 db2 test.db
do_test 310 {
execsql {
SELECT sum(a), sum(length(b)) FROM t1;
PRAGMA integrity_check;
PRAGMA journal_mode;
PRAGMA page_size;
PRAGMA page_count;
} db2
} {210 26000 ok wal 8192 12}
# Corrupt the database again
do_catchsql_test 320 {
UPDATE sqlite_dbpage SET data=randomblob(8192) WHERE pgno=1;
PRAGMA quick_check
} {1 {file is not a database}}
do_test 330 {
catchsql {
PRAGMA quick_check
} db2
} {1 {file is not a database}}
# Reset the database yet again. Verify that the page size and
# journal mode are preserved.
#
do_test 400 {
sqlite3_db_config db RESET_DB 1
db eval VACUUM
sqlite3_db_config db RESET_DB 0
catchsql {
PRAGMA page_count;
PRAGMA page_size;
PRAGMA journal_mode;
PRAGMA quick_check;
} db2
} {0 {1 8192 wal ok}}
db2 close
finish_test