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