/trunk/test/notify3.test |
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# 2010 June 30 |
# |
# 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. |
# |
#*********************************************************************** |
# This file implements regression tests for SQLite library. The |
# focus of this file is testing the sqlite3_unlock_notify() API. |
# |
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set testdir [file dirname $argv0] |
source $testdir/tester.tcl |
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# This script only runs if shared-cache and unlock-notify are available. |
# |
ifcapable !unlock_notify||!shared_cache { |
finish_test |
return |
} |
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set esc [sqlite3_enable_shared_cache 1] |
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sqlite3 db test.db |
file delete -force test.db2 test.db2-journal test.db2-wal |
sqlite3 db2 test.db2 |
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do_test notify3-1.1 { |
execsql { |
CREATE TABLE t1(a, b); |
INSERT INTO t1 VALUES('t1 A', 't1 B'); |
} |
} {} |
do_test notify3-1.2 { |
execsql { |
CREATE TABLE t2(a, b); |
INSERT INTO t2 VALUES('t2 A', 't2 B'); |
} db2 |
} {} |
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do_test notify3-1.3 { |
execsql { |
BEGIN EXCLUSIVE; |
INSERT INTO t2 VALUES('t2 C', 't2 D'); |
} db2 |
} {} |
do_test notify3-1.4 { |
catchsql { ATTACH 'test.db2' AS aux } |
} {0 {}} |
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do_test notify3-1.5 { |
catchsql { SELECT * FROM t2 } |
} {1 {database schema is locked: aux}} |
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do_test notify3-1.6 { |
list [sqlite3_errcode db] [sqlite3_extended_errcode db] |
} {SQLITE_LOCKED SQLITE_LOCKED_SHAREDCACHE} |
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do_test notify3-1.7 { |
sqlite3_extended_result_codes db 1 |
catch { set ::stmt [sqlite3_prepare_v2 db "SELECT * FROM t2" -1 tail] } msg |
set msg |
} {(262) database schema is locked: aux} |
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do_test notify3-1.8 { |
set ::when 1 |
db unlock_notify { set ::res $::when } |
set ::when 2 |
execsql { COMMIT } db2 |
set ::res |
} {2} |
do_test notify3-1.9 { |
catchsql { SELECT * FROM t2 } |
} {0 {{t2 A} {t2 B} {t2 C} {t2 D}}} |
db close |
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set err {{1 {unable to open database: test.db2}}} |
set noerr {{0 {}}} |
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# When a new database is attached, the connection doing the attaching |
# tries to load any unloaded schemas for both the new database and any |
# already attached databases (including the main database). If it is |
# unable to load any such schemas, then the ATTACH statement fails. |
# |
# This block tests that if the loading of schemas as a result of an |
# ATTACH fails due to locks on the schema table held by other shared-cache |
# connections the extended error code is SQLITE_LOCKED_SHAREDCACHE and |
# it is possible to use the unlock-notify mechanism to determine when |
# the ATTACH might succeed. |
# |
# This test does not work for test-permutations that specify SQL to |
# be executed as part of the [sqlite3] command that opens the database. |
# Executing such SQL causes SQLite to load the database schema into memory |
# earlier than expected, causing test cases to fail. |
# |
if {[presql] == ""} { |
foreach { |
tn |
db1_loaded |
db2_loaded |
enable_extended_errors |
result |
error1 error2 |
} " |
0 0 0 0 $err SQLITE_LOCKED SQLITE_LOCKED_SHAREDCACHE |
1 0 0 1 $err SQLITE_LOCKED_SHAREDCACHE SQLITE_LOCKED_SHAREDCACHE |
2 0 1 0 $err SQLITE_LOCKED SQLITE_LOCKED_SHAREDCACHE |
3 0 1 1 $err SQLITE_LOCKED_SHAREDCACHE SQLITE_LOCKED_SHAREDCACHE |
4 1 0 0 $err SQLITE_LOCKED SQLITE_LOCKED_SHAREDCACHE |
5 1 0 1 $err SQLITE_LOCKED_SHAREDCACHE SQLITE_LOCKED_SHAREDCACHE |
6 1 1 0 $noerr SQLITE_OK SQLITE_OK |
7 1 1 1 $noerr SQLITE_OK SQLITE_OK |
" { |
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do_test notify3-2.$tn.1 { |
catch { db1 close } |
catch { db2 close } |
sqlite3 db1 test.db |
sqlite3 db2 test.db2 |
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sqlite3_extended_result_codes db1 $enable_extended_errors |
sqlite3_extended_result_codes db2 $enable_extended_errors |
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if { $db1_loaded } { db1 eval "SELECT * FROM sqlite_master" } |
if { $db2_loaded } { db2 eval "SELECT * FROM sqlite_master" } |
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db2 eval "BEGIN EXCLUSIVE" |
catchsql "ATTACH 'test.db2' AS two" db1 |
} $result |
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do_test notify3-2.$tn.2 { |
list [sqlite3_errcode db1] [sqlite3_extended_errcode db1] |
} [list $error1 $error2] |
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do_test notify3-2.$tn.3 { |
db1 unlock_notify {set invoked 1} |
set invoked 0 |
db2 eval commit |
set invoked |
} [lindex $result 0] |
} |
} |
catch { db1 close } |
catch { db2 close } |
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sqlite3_enable_shared_cache $esc |
finish_test |
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