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|   1 # 2001 September 15 |  | 
|   2 # |  | 
|   3 # The author disclaims copyright to this source code.  In place of |  | 
|   4 # 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.  The |  | 
|  12 # focus of this script is database locks and the operation of the |  | 
|  13 # DEFERRED, IMMEDIATE, and EXCLUSIVE keywords as modifiers to the |  | 
|  14 # BEGIN command. |  | 
|  15 # |  | 
|  16 # $Id: lock3.test,v 1.4 2009/03/28 15:04:24 drh Exp $ |  | 
|  17  |  | 
|  18  |  | 
|  19 set testdir [file dirname $argv0] |  | 
|  20 source $testdir/tester.tcl |  | 
|  21  |  | 
|  22 # Establish two connections to the same database.  Put some |  | 
|  23 # sample data into the database. |  | 
|  24 # |  | 
|  25 do_test lock3-1.1 { |  | 
|  26   file mkdir tempdir/t1/t2/t3 |  | 
|  27   sqlite3 db2 ./tempdir/t1//t2/./t3//./../..//./../../tempdir/..//test.db// |  | 
|  28   execsql { |  | 
|  29     CREATE TABLE t1(a); |  | 
|  30     INSERT INTO t1 VALUES(1); |  | 
|  31   } |  | 
|  32   execsql { |  | 
|  33     SELECT * FROM t1 |  | 
|  34   } db2 |  | 
|  35 } 1 |  | 
|  36  |  | 
|  37 # Get a deferred lock on the database using one connection.  The |  | 
|  38 # other connection should still be able to write. |  | 
|  39 # |  | 
|  40 do_test lock3-2.1 { |  | 
|  41   execsql {BEGIN DEFERRED TRANSACTION} |  | 
|  42   execsql {INSERT INTO t1 VALUES(2)} db2 |  | 
|  43   execsql {END TRANSACTION} |  | 
|  44   execsql {SELECT * FROM t1} |  | 
|  45 } {1 2} |  | 
|  46  |  | 
|  47 # Get an immediate lock on the database using one connection.  The |  | 
|  48 # other connection should be able to read the database but not write |  | 
|  49 # it. |  | 
|  50 # |  | 
|  51 do_test lock3-3.1 { |  | 
|  52   execsql {BEGIN IMMEDIATE TRANSACTION} |  | 
|  53   catchsql {SELECT * FROM t1} db2 |  | 
|  54 } {0 {1 2}} |  | 
|  55 do_test lock3-3.2 { |  | 
|  56   catchsql {INSERT INTO t1 VALUES(3)} db2 |  | 
|  57 } {1 {database is locked}} |  | 
|  58 do_test lock3-3.3 { |  | 
|  59   execsql {END TRANSACTION} |  | 
|  60 } {} |  | 
|  61  |  | 
|  62  |  | 
|  63 # Get an exclusive lock on the database using one connection.  The |  | 
|  64 # other connection should be unable to read or write the database. |  | 
|  65 # |  | 
|  66 do_test lock3-4.1 { |  | 
|  67   execsql {BEGIN EXCLUSIVE TRANSACTION} |  | 
|  68   catchsql {SELECT * FROM t1} db2 |  | 
|  69 } {1 {database is locked}} |  | 
|  70 do_test lock3-4.2 { |  | 
|  71   catchsql {INSERT INTO t1 VALUES(3)} db2 |  | 
|  72 } {1 {database is locked}} |  | 
|  73 do_test lock3-4.3 { |  | 
|  74   execsql {END TRANSACTION} |  | 
|  75 } {} |  | 
|  76  |  | 
|  77 catch {db2 close} |  | 
|  78  |  | 
|  79 finish_test |  | 
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