/trunk/test/jrnlmode2.test |
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# 2009 March 24 |
# |
# 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. |
# |
#*********************************************************************** |
# |
|
set testdir [file dirname $argv0] |
source $testdir/tester.tcl |
|
ifcapable {!pager_pragmas} { |
finish_test |
return |
} |
|
#------------------------------------------------------------------------- |
# The tests in this file check that the following two bugs (both now fixed) |
# do not reappear. |
# |
# jrnlmode2-1.*: Demonstrate bug #3745: |
# |
# In persistent journal mode, if: |
# |
# * There is a persistent journal in the file-system, AND |
# * there exists a connection with a shared lock on the db file, |
# |
# then a second connection cannot open a read-transaction on the database. |
# The reason is because while determining that the persistent-journal is |
# not a hot-journal, SQLite currently grabs an exclusive lock on the |
# database file. If this fails because another connection has a shared |
# lock, then SQLITE_BUSY is returned to the user. |
# |
# jrnlmode2-2.*: Demonstrate bug #3751: |
# |
# If a connection is opened in SQLITE_OPEN_READONLY mode, the underlying |
# unix file descriptor on the database file is opened in O_RDONLY mode. |
# |
# When SQLite queries the database file for the schema in order to compile |
# the SELECT statement, it sees the empty journal in the file system, it |
# attempts to obtain an exclusive lock on the database file (this is a |
# bug). The attempt to obtain an exclusive (write) lock on a read-only file |
# fails at the OS level. Under unix, fcntl() reports an EBADF - "Bad file |
# descriptor" - error. |
# |
|
do_test jrnlmode2-1.1 { |
execsql { |
PRAGMA journal_mode = persist; |
CREATE TABLE t1(a, b); |
INSERT INTO t1 VALUES(1, 2); |
} |
} {persist} |
|
do_test jrnlmode2-1.2 { |
file exists test.db-journal |
} {1} |
|
do_test jrnlmode2-1.3 { |
sqlite3 db2 test.db |
execsql { SELECT * FROM t1 } db2 |
} {1 2} |
|
do_test jrnlmode2-1.4 { |
execsql { |
INSERT INTO t1 VALUES(3, 4); |
} |
execsql { |
BEGIN; |
SELECT * FROM t1; |
} |
execsql { PRAGMA lock_status } |
} {main shared temp closed} |
|
do_test jrnlmode2-1.5 { |
file exists test.db-journal |
} {1} |
|
do_test jrnlmode2-1.6 { |
catchsql { SELECT * FROM t1 } db2 |
} {0 {1 2 3 4}} |
|
do_test jrnlmode2-1.7 { |
execsql { COMMIT } |
catchsql { SELECT * FROM t1 } db2 |
} {0 {1 2 3 4}} |
|
|
|
do_test jrnlmode2-2.1 { |
db2 close |
execsql { PRAGMA journal_mode = truncate } |
execsql { INSERT INTO t1 VALUES(5, 6) } |
} {} |
|
do_test jrnlmode2-2.2 { |
file exists test.db-journal |
} {1} |
|
do_test jrnlmode2-2.3 { |
file size test.db-journal |
} {0} |
|
do_test jrnlmode2-2.4 { |
sqlite3 db2 test.db -readonly 1 |
catchsql { SELECT * FROM t1 } db2 |
} {0 {1 2 3 4 5 6}} |
|
do_test jrnlmode2-2.5 { |
db close |
file delete test.db-journal |
} {} |
do_test jrnlmode2-2.6 { |
sqlite3 db2 test.db -readonly 1 |
catchsql { SELECT * FROM t1 } db2 |
} {0 {1 2 3 4 5 6}} |
|
catch { db2 close } |
finish_test |