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Annotation of embedaddon/sqlite3/test/capi3b.test, revision 1.1.1.1

1.1       misho       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 1.4 2007/08/10 19:46:14 drh 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