SQLite

#***********************************************************************
# This file attempts to check the library in an out-of-memory situation.
# When compiled with -DSQLITE_DEBUG=1, the SQLite library accepts a special
# command (sqlite_malloc_fail N) which causes the N-th malloc to fail.  This
# special feature is used to see what happens in the library if a malloc
# were to really fail due to an out-of-memory situation.
#
# $Id: malloc.test,v 1.39 2007/03/29 17:07:53 danielk1977 Exp $

set testdir [file dirname $argv0]
source $testdir/tester.tcl

# Only run these tests if memory debugging is turned on.
#
if {[info command sqlite_malloc_stat]==""} {

    error "out of memory"
  }
} -sqlbody {
  ATTACH DATABASE 'test2.db' AS t2;
  SELECT * FROM t1;
  DETACH DATABASE t2;
} 

# Test malloc failure whilst installing a foriegn key.
#
do_malloc_test 21 -sqlbody {
  CREATE TABLE abc(a, b, c, FOREIGN KEY(a) REFERENCES abc(b))
} 


# Ensure that no file descriptors were leaked.
do_test malloc-99.X {
  catch {db close}
  set sqlite_open_file_count
} {0}

puts open-file-count=$sqlite_open_file_count
sqlite_malloc_fail 0
finish_test

# 2006 September 4
#
# The author disclaims copyright to this source code.  In place of
# a legal notice, here is a blessing:
#
#    May you do good and not evil.
#    May you find forgiveness for yourself and forgive others.
#    May you share freely, never taking more than you give.
#
#***********************************************************************
# This file implements regression tests for SQLite library.
#
# $Id: misc7.test,v 1.2 2007/03/29 17:07:53 danielk1977 Exp $

set testdir [file dirname $argv0]
source $testdir/tester.tcl

do_test misc7-1 {
  c_misuse_test
} {}

do_test misc7-2 {
  c_realloc_test
} {}

do_test misc7-3 {
  c_collation_test
} {}

# Try to open a directory:
#
do_test misc7-4 {
  file delete mydir
  file mkdir mydir
  set rc [catch {
    sqlite3 db2 ./mydir
  } msg]
  list $rc $msg
} {1 {unable to open database file}}

# Try to open a file with a directory where it's journal file should be.
#
do_test misc7-5 {
  file delete mydir
  file mkdir mydir-journal
  sqlite3 db2 ./mydir
  catchsql {
    CREATE TABLE abc(a, b, c);
  } db2
} {1 {unable to open database file}}
db2 close

#--------------------------------------------------------------------
# The following tests, misc7-6.* test the libraries behaviour when
# it cannot open a file. To force this condition, we use up all the
# file-descriptors before running sqlite. This probably only works
# on unix.
#

proc use_up_files {} {
  set ret [list]
  catch {
    while 1 { lappend ret [open test.db] }
  }
  return $ret
}

execsql { CREATE TABLE abc(a PRIMARY KEY, b, c); }
db close
set fd_list [use_up_files]

set ::go 1
set ::n 1
while {$::go} {
  catch {db close}
  do_test misc7-6.$::n {
    set rc [catch {
      sqlite db test.db
      db eval {
        BEGIN;
        INSERT INTO abc VALUES(1, 2, 3);
        INSERT INTO abc VALUES(2, 3, 4);
        INSERT INTO abc SELECT a+2, b, c FROM abc;
        COMMIT;
      }
    } msg]
    if {$rc == 0} {set ::go 0}

    expr {$rc == 0 || ($rc == 1 && $msg eq "unable to open database file")}
  } 1

  close [lindex $fd_list 0]
  set fd_list [lrange $fd_list 1 end]
  incr ::n
}
foreach fd $fd_list {
  close $fd
}

finish_test