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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 between competing processes.
     13 #
     14 # $Id: lock2.test,v 1.11 2009/05/01 10:55:34 danielk1977 Exp $
     15 
     16 
     17 set testdir [file dirname $argv0]
     18 source $testdir/tester.tcl
     19 source $testdir/lock_common.tcl
     20 
     21 
     22 # Simple locking test case:
     23 #
     24 # lock2-1.1: Connect a second process to the database.
     25 # lock2-1.2: Establish a RESERVED lock with this process.
     26 # lock2-1.3: Get a SHARED lock with the second process.
     27 # lock2-1.4: Try for a RESERVED lock with process 2. This fails.
     28 # lock2-1.5: Try to upgrade the first process to EXCLUSIVE, this fails so
     29 #            it gets PENDING.
     30 # lock2-1.6: Release the SHARED lock held by the second process. 
     31 # lock2-1.7: Attempt to reaquire a SHARED lock with the second process.
     32 #            this fails due to the PENDING lock.
     33 # lock2-1.8: Ensure the first process can now upgrade to EXCLUSIVE.
     34 #
     35 do_test lock2-1.1 {
     36   set ::tf1 [launch_testfixture]
     37   testfixture $::tf1 {
     38     sqlite3 db test.db -key xyzzy
     39     db eval {select * from sqlite_master}
     40   }
     41 } {}
     42 do_test lock2-1.1.1 {
     43   execsql {pragma lock_status}
     44 } {main unlocked temp closed}
     45 sqlite3_soft_heap_limit 0
     46 do_test lock2-1.2 {
     47   execsql {
     48     BEGIN;
     49     CREATE TABLE abc(a, b, c);
     50   }
     51 } {}
     52 do_test lock2-1.3 {
     53   testfixture $::tf1 {
     54     db eval {
     55       BEGIN;
     56       SELECT * FROM sqlite_master;
     57     }
     58   }
     59 } {}
     60 do_test lock2-1.4 {
     61   testfixture $::tf1 {
     62     catch { db eval { CREATE TABLE def(d, e, f) } } msg
     63     set msg
     64   }
     65 } {database is locked}
     66 do_test lock2-1.5 {
     67   catchsql {
     68     COMMIT;
     69   }
     70 } {1 {database is locked}}
     71 do_test lock2-1.6 {
     72   testfixture $::tf1 {
     73     db eval {
     74       SELECT * FROM sqlite_master;
     75       COMMIT;
     76     }
     77   }
     78 } {}
     79 do_test lock2-1.7 {
     80   testfixture $::tf1 {
     81     catch { db eval {
     82       BEGIN;
     83       SELECT * FROM sqlite_master;
     84     } } msg 
     85     set msg
     86   }
     87 } {database is locked}
     88 do_test lock2-1.8 {
     89   catchsql {
     90     COMMIT;
     91   }
     92 } {0 {}}
     93 do_test lock2-1.9 {
     94   execsql {
     95     SELECT * FROM sqlite_master;
     96   }
     97 } "table abc abc [expr $AUTOVACUUM?3:2] {CREATE TABLE abc(a, b, c)}"
     98 catch flush_async_queue
     99 do_test lock2-1.10 {
    100   testfixture $::tf1 {
    101     db eval {
    102       SELECT * FROM sqlite_master;
    103     }
    104   }
    105 } "table abc abc [expr $AUTOVACUUM?3:2] {CREATE TABLE abc(a, b, c)}"
    106 
    107 catch {testfixture $::tf1 {db close}}
    108 catch {close $::tf1}
    109 sqlite3_soft_heap_limit $cmdlinearg(soft-heap-limit)
    110 
    111 finish_test
    112