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