AryaWu/sqlite

1# 2010 June 302#3# The author disclaims copyright to this source code.  In place of4# a legal notice, here is a blessing:5#6#    May you do good and not evil.7#    May you find forgiveness for yourself and forgive others.8#    May you share freely, never taking more than you give.9#10#***********************************************************************11# This file implements regression tests for SQLite library.  The12# focus of this file is testing the sqlite3_unlock_notify() API.13#14 15set testdir [file dirname $argv0]16source $testdir/tester.tcl17 18# This script only runs if shared-cache and unlock-notify are available.19#20ifcapable !unlock_notify||!shared_cache { 21  finish_test 22  return 23}24 25set esc [sqlite3_enable_shared_cache 1]26 27sqlite3 db  test.db28forcedelete test.db2 test.db2-journal test.db2-wal29sqlite3 db2 test.db230 31do_test notify3-1.1 {32  execsql { 33    CREATE TABLE t1(a, b); 34    INSERT INTO t1 VALUES('t1 A', 't1 B');35  }36} {}37do_test notify3-1.2 {38  execsql { 39    CREATE TABLE t2(a, b);40    INSERT INTO t2 VALUES('t2 A', 't2 B');41  } db242} {}43 44do_test notify3-1.3 {45  execsql { 46    BEGIN EXCLUSIVE;47    INSERT INTO t2 VALUES('t2 C', 't2 D');48  } db249} {}50do_test notify3-1.4 {51  catchsql { ATTACH 'test.db2' AS aux }52} {0 {}}53 54do_test notify3-1.5 {55  catchsql { SELECT * FROM t2 }56} {1 {database schema is locked: aux}}57 58do_test notify3-1.6 {59  list [sqlite3_errcode db] [sqlite3_extended_errcode db]60} {SQLITE_LOCKED SQLITE_LOCKED_SHAREDCACHE}61 62do_test notify3-1.7 {63  sqlite3_extended_result_codes db 164  catch { set ::stmt [sqlite3_prepare_v2 db "SELECT * FROM t2" -1 tail] } msg65  set msg66} {(262) database schema is locked: aux}67 68do_test notify3-1.8 {69  set ::when 170  db unlock_notify { set ::res $::when }71  set ::when 272  execsql { COMMIT } db273  set ::res74} {2}75do_test notify3-1.9 {76  catchsql { SELECT * FROM t2 }77} {0 {{t2 A} {t2 B} {t2 C} {t2 D}}}78db close79 80 81set err   {{1 {unable to open database: test.db2}}}82set noerr {{0 {}}}83 84# When a new database is attached, the connection doing the attaching 85# tries to load any unloaded schemas for both the new database and any86# already attached databases (including the main database). If it is87# unable to load any such schemas, then the ATTACH statement fails.88#89# This block tests that if the loading of schemas as a result of an90# ATTACH fails due to locks on the schema table held by other shared-cache91# connections the extended error code is SQLITE_LOCKED_SHAREDCACHE and92# it is possible to use the unlock-notify mechanism to determine when93# the ATTACH might succeed.94#95# This test does not work for test-permutations that specify SQL to96# be executed as part of the [sqlite3] command that opens the database.97# Executing such SQL causes SQLite to load the database schema into memory 98# earlier than expected, causing test cases to fail.99#100if {[presql] == ""} {101  foreach {102    tn103    db1_loaded104    db2_loaded105    enable_extended_errors106    result107    error1 error2108  } "109    0   0 0 0   $err     SQLITE_LOCKED               SQLITE_LOCKED_SHAREDCACHE110    1   0 0 1   $err     SQLITE_LOCKED_SHAREDCACHE   SQLITE_LOCKED_SHAREDCACHE111    2   0 1 0   $noerr   SQLITE_OK                   SQLITE_OK112    3   0 1 1   $noerr   SQLITE_OK                   SQLITE_OK113    4   1 0 0   $err     SQLITE_LOCKED               SQLITE_LOCKED_SHAREDCACHE114    5   1 0 1   $err     SQLITE_LOCKED_SHAREDCACHE   SQLITE_LOCKED_SHAREDCACHE115    6   1 1 0   $noerr   SQLITE_OK                   SQLITE_OK116    7   1 1 1   $noerr   SQLITE_OK                   SQLITE_OK117  " {118  119    do_test notify3-2.$tn.1 {120      catch { db1 close }121      catch { db2 close }122      sqlite3 db1 test.db123      sqlite3 db2 test.db2124  125      sqlite3_extended_result_codes db1 $enable_extended_errors126      sqlite3_extended_result_codes db2 $enable_extended_errors127  128      if { $db1_loaded } { db1 eval "SELECT * FROM sqlite_master" }129      if { $db2_loaded } { db2 eval "SELECT * FROM sqlite_master" }130  131      db2 eval "BEGIN EXCLUSIVE"132      catchsql "ATTACH 'test.db2' AS two" db1133    } $result134  135    do_test notify3-2.$tn.2 {136      list [sqlite3_errcode db1] [sqlite3_extended_errcode db1]137    } [list $error1 $error2]138  139    do_test notify3-2.$tn.3 {140      db1 unlock_notify {set invoked 1}141      set invoked 0142      db2 eval commit143      set invoked144    } [lindex $result 0]145  }146}147catch { db1 close }148catch { db2 close }149 150 151sqlite3_enable_shared_cache $esc152finish_test153