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Annotation of embedaddon/sqlite3/test/tkt4018.test, revision 1.1

1.1     ! misho       1: # 2009 August 20
        !             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.
        !            12: #
        !            13: # This file implements tests to verify that ticket #4018 has been
        !            14: # fixed.  
        !            15: #
        !            16: 
        !            17: set testdir [file dirname $argv0]
        !            18: source $testdir/tester.tcl
        !            19: 
        !            20: proc testsql {sql} {
        !            21:   set fd [open tf_main.tcl w]
        !            22:   puts $fd [subst -nocommands {
        !            23:     sqlite3_test_control_pending_byte 0x0010000
        !            24:     sqlite3 db test.db
        !            25:     set rc [catch { db eval {$sql} } msg]
        !            26:     puts -nonewline "[set rc] {[set msg]}"
        !            27:     flush stdout
        !            28:     exit
        !            29:   }]
        !            30:   close $fd
        !            31:   set fd [open "| [info nameofexec] ./tf_main.tcl" r] 
        !            32:   set res [read $fd]
        !            33:   close $fd
        !            34:   return $res
        !            35: }
        !            36: 
        !            37: do_test tkt4018-1.1 {
        !            38:   execsql {
        !            39:     CREATE TABLE t1(a, b);
        !            40:     BEGIN;
        !            41:     SELECT * FROM t1;
        !            42:   }
        !            43: } {}
        !            44: 
        !            45: # The database is locked by connection [db]. Open and close a second
        !            46: # connection to test.db 10000 times. If file-descriptors are not being
        !            47: # reused, then the process will quickly exceed its maximum number of
        !            48: # file descriptors (1024 by default on linux).
        !            49: do_test tkt4018-1.2 {
        !            50:   for {set i 0} {$i < 10000} {incr i} {
        !            51:     sqlite3 db2 test.db
        !            52:     db2 close
        !            53:   }
        !            54: } {}
        !            55: 
        !            56: # Now check that connection [db] is still holding a SHARED lock by
        !            57: # having a second process try to write the db.
        !            58: do_test tkt4018-1.3 {
        !            59:   testsql {INSERT INTO t1 VALUES(3, 4)}
        !            60: } {1 {database is locked}}
        !            61: 
        !            62: # Sanity checking. Have [db] release the lock and then retry the
        !            63: # INSERT from the previous test case.
        !            64: do_test tkt4018-1.4 {
        !            65:   db eval COMMIT
        !            66:   testsql {INSERT INTO t1 VALUES(3, 4)}
        !            67: } {0 {}}
        !            68: 
        !            69: # Check that reusing a file descriptor cannot change a read-only 
        !            70: # connection into a read-write connection.
        !            71: do_test tkt4018-2.1 {
        !            72:   sqlite3 db2 test.db
        !            73:   execsql {INSERT INTO t1 VALUES(1, 2)} db2
        !            74: } {}
        !            75: do_test tkt4018-2.2 {
        !            76:   execsql {
        !            77:     BEGIN;
        !            78:     SELECT * FROM t1 ORDER BY a;
        !            79:   }
        !            80: } {1 2 3 4}
        !            81: do_test tkt4018-2.3 {
        !            82:   db2 close
        !            83:   sqlite3 db2 test.db -readonly 1
        !            84:   execsql COMMIT
        !            85:   catchsql {INSERT INTO t1 VALUES(5, 6)} db2
        !            86: } {1 {attempt to write a readonly database}}
        !            87: db2 close
        !            88: 
        !            89: finish_test