test/misuse.test

# 2002 May 10
#
# 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.
#
# This file implements tests for the SQLITE_MISUSE detection logic.
# This test file leaks memory and file descriptors.
#
# $Id: misuse.test,v 1.4 2004/01/07 19:24:48 drh Exp $

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

# Make sure the test logic works
#
do_test misuse-1.1 {
  db close
  catch {file delete -force test2.db}
  set ::DB [sqlite db test2.db]
  execsql {
    CREATE TABLE t1(a,b);
    INSERT INTO t1 VALUES(1,2);
  }
  sqlite_exec_printf $::DB {SELECT * FROM t1} {}
} {0 {a b 1 2}}
do_test misuse-1.2 {
  sqlite_exec_printf $::DB {SELECT x_coalesce(NULL,a) AS 'xyz' FROM t1} {}
} {1 {no such function: x_coalesce}}
do_test misuse-1.3 {
  sqlite_create_function $::DB
  sqlite_exec_printf $::DB {SELECT x_coalesce(NULL,a) AS 'xyz' FROM t1} {}
} {0 {xyz 1}}

# Use the x_sqlite_exec() SQL function to simulate the effect of two
# threads trying to use the same database at the same time.
#
# It used to be prohibited to invoke sqlite_exec() from within a function,
# but that has changed.  The following tests used to cause errors but now
# they do not.
#
do_test misuse-1.4 {
  sqlite_exec_printf $::DB {
     SELECT x_sqlite_exec('SELECT * FROM t1') AS xyz;
  } {}
} {0 {xyz {1 2}}}
do_test misuse-1.5 {
  sqlite_exec_printf $::DB {SELECT * FROM t1} {}
} {0 {a b 1 2}}
do_test misuse-1.6 {
  catchsql {
    SELECT * FROM t1
  }
} {0 {1 2}}

# Attempt to register a new SQL function while an sqlite_exec() is active.
#
do_test misuse-2.1 {
  db close
  set ::DB [sqlite db test2.db]
  execsql {
    SELECT * FROM t1
  }
} {1 2}
do_test misuse-2.2 {
  sqlite_exec_printf $::DB {SELECT * FROM t1} {}
} {0 {a b 1 2}}
do_test misuse-2.3 {
  set v [catch {
    db eval {SELECT * FROM t1} {} {
      sqlite_create_function $::DB
    }
  } msg]
  lappend v $msg
} {1 {library routine called out of sequence}}
do_test misuse-2.4 {
  sqlite_exec_printf $::DB {SELECT * FROM t1} {}
} {21 {library routine called out of sequence}}
do_test misuse-2.5 {
  catchsql {
    SELECT * FROM t1
  }
} {1 {library routine called out of sequence}}

# Attempt to register a new SQL aggregate while an sqlite_exec() is active.
#
do_test misuse-3.1 {
  db close
  set ::DB [sqlite db test2.db]
  execsql {
    SELECT * FROM t1
  }
} {1 2}
do_test misuse-3.2 {
  sqlite_exec_printf $::DB {SELECT * FROM t1} {}
} {0 {a b 1 2}}
do_test misuse-3.3 {
  set v [catch {
    db eval {SELECT * FROM t1} {} {
      sqlite_create_aggregate $::DB
    }
  } msg]
  lappend v $msg
} {1 {library routine called out of sequence}}
do_test misuse-3.4 {
  sqlite_exec_printf $::DB {SELECT * FROM t1} {}
} {21 {library routine called out of sequence}}
do_test misuse-3.5 {
  catchsql {
    SELECT * FROM t1
  }
} {1 {library routine called out of sequence}}

# Attempt to close the database from an sqlite_exec callback.
#
do_test misuse-4.1 {
  db close
  set ::DB [sqlite db test2.db]
  execsql {
    SELECT * FROM t1
  }
} {1 2}
do_test misuse-4.2 {
  sqlite_exec_printf $::DB {SELECT * FROM t1} {}
} {0 {a b 1 2}}
do_test misuse-4.3 {
  set v [catch {
    db eval {SELECT * FROM t1} {} {
      sqlite_close $::DB
    }
  } msg]
  lappend v $msg
} {1 {library routine called out of sequence}}
do_test misuse-4.4 {
  sqlite_exec_printf $::DB {SELECT * FROM t1} {}
} {21 {library routine called out of sequence}}
do_test misuse-4.5 {
  catchsql {
    SELECT * FROM t1
  }
} {1 {library routine called out of sequence}}

# Attempt to use a database after it has been closed.
#
do_test misuse-5.1 {
  db close
  set ::DB [sqlite db test2.db]
  execsql {
    SELECT * FROM t1
  }
} {1 2}
do_test misuse-5.2 {
  sqlite_exec_printf $::DB {SELECT * FROM t1} {}
} {0 {a b 1 2}}
do_test misuse-5.3 {
  db close
  sqlite_exec_printf $::DB {SELECT * FROM t1} {}
} {21 {library routine called out of sequence}}

finish_test