Return to capi3b.test CVS log

Up to [ELWIX - Embedded LightWeight unIX -] / embedaddon / sqlite3 / test

sqlite3

    1: # 2004 September 2
    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 testing the callback-free C/C++ API and in
   13: # particular the behavior of sqlite3_step() when trying to commit
   14: # with lock contention.
   15: #
   16: # $Id: capi3b.test,v 1.1.1.1 2012/02/21 17:04:16 misho Exp $
   17: #
   18: 
   19: set testdir [file dirname $argv0]
   20: source $testdir/tester.tcl
   21: 
   22: 
   23: # These tests depend on the pager holding changes in cache
   24: # until it is time to commit.  But that won't happen if the
   25: # soft-heap-limit is set too low.  So disable the soft heap limit
   26: # for the duration of this test.
   27: #
   28: sqlite3_soft_heap_limit 0
   29: 
   30: 
   31: set DB [sqlite3_connection_pointer db]
   32: sqlite3 db2 test.db
   33: set DB2 [sqlite3_connection_pointer db2]
   34: 
   35: # Create some data in the database
   36: #
   37: do_test capi3b-1.1 {
   38:   execsql {
   39:     CREATE TABLE t1(x);
   40:     INSERT INTO t1 VALUES(1);
   41:     INSERT INTO t1 VALUES(2);
   42:     SELECT * FROM t1
   43:   }
   44: } {1 2}
   45: 
   46: # Make sure the second database connection can see the data
   47: #
   48: do_test capi3b-1.2 {
   49:   execsql {
   50:     SELECT * FROM t1
   51:   } db2
   52: } {1 2}
   53: 
   54: # First database connection acquires a shared lock
   55: #
   56: do_test capi3b-1.3 {
   57:   execsql {
   58:     BEGIN;
   59:     SELECT * FROM t1;
   60:   }
   61: } {1 2}
   62: 
   63: # Second database connection tries to write.  The sqlite3_step()
   64: # function returns SQLITE_BUSY because it cannot commit.
   65: #
   66: do_test capi3b-1.4 {
   67:   set VM [sqlite3_prepare $DB2 {INSERT INTO t1 VALUES(3)} -1 TAIL]
   68:   sqlite3_step $VM
   69: } SQLITE_BUSY
   70: 
   71: # The sqlite3_step call can be repeated multiple times.
   72: #
   73: do_test capi3b-1.5.1 {
   74:   sqlite3_step $VM
   75: } SQLITE_BUSY
   76: do_test capi3b-1.5.2 {
   77:   sqlite3_step $VM
   78: } SQLITE_BUSY
   79: 
   80: # The first connection closes its transaction.  This allows the second
   81: # connections sqlite3_step to succeed.
   82: #
   83: do_test capi3b-1.6 {
   84:   execsql COMMIT
   85:   sqlite3_step $VM
   86: } SQLITE_DONE
   87: do_test capi3b-1.7 {
   88:   sqlite3_finalize $VM
   89: } SQLITE_OK
   90: do_test capi3b-1.8 {
   91:   execsql {SELECT * FROM t1} db2
   92: } {1 2 3}
   93: do_test capi3b-1.9 {
   94:   execsql {SELECT * FROM t1}
   95: } {1 2 3}
   96: 
   97: # Start doing a SELECT with one connection.  This gets a SHARED lock.
   98: # Then do an INSERT with the other connection.  The INSERT should
   99: # not be able to complete until the SELECT finishes.
  100: #
  101: do_test capi3b-2.1 {
  102:   set VM1 [sqlite3_prepare $DB {SELECT * FROM t1} -1 TAIL]
  103:   sqlite3_step $VM1
  104: } SQLITE_ROW
  105: do_test capi3b-2.2 {
  106:   sqlite3_column_text $VM1 0
  107: } 1
  108: do_test capi3b-2.3 {
  109:   set VM2 [sqlite3_prepare $DB2 {INSERT INTO t1 VALUES(4)} -1 TAIL]
  110:   sqlite3_step $VM2
  111: } SQLITE_BUSY
  112: do_test capi3b-2.4 {
  113:   sqlite3_step $VM1
  114: } SQLITE_ROW
  115: do_test capi3b-2.5 {
  116:   sqlite3_column_text $VM1 0
  117: } 2
  118: do_test capi3b-2.6 {
  119:   sqlite3_step $VM2
  120: } SQLITE_BUSY
  121: do_test capi3b-2.7 {
  122:   sqlite3_step $VM1
  123: } SQLITE_ROW
  124: do_test capi3b-2.8 {
  125:   sqlite3_column_text $VM1 0
  126: } 3
  127: do_test capi3b-2.9 {
  128:   sqlite3_step $VM2
  129: } SQLITE_BUSY
  130: do_test capi3b-2.10 {
  131:   sqlite3_step $VM1
  132: } SQLITE_DONE
  133: do_test capi3b-2.11 {
  134:   sqlite3_step $VM2
  135: } SQLITE_DONE
  136: do_test capi3b-2.12 {
  137:   sqlite3_finalize $VM1
  138:   sqlite3_finalize $VM2
  139:   execsql {SELECT * FROM t1}
  140: } {1 2 3 4}
  141: 
  142: catch {db2 close}
  143: 
  144: sqlite3_soft_heap_limit $cmdlinearg(soft-heap-limit)
  145: finish_test