sl@0: # 2007 June 26
sl@0: #
sl@0: # The author disclaims copyright to this source code.  In place of
sl@0: # a legal notice, here is a blessing:
sl@0: #
sl@0: #    May you do good and not evil.
sl@0: #    May you find forgiveness for yourself and forgive others.
sl@0: #    May you share freely, never taking more than you give.
sl@0: #
sl@0: #***********************************************************************
sl@0: # This file implements regression tests for SQLite library.  The
sl@0: # focus of this file is testing the ALTER TABLE ... RENAME TO
sl@0: # command on virtual tables.
sl@0: #
sl@0: # $Id: vtab_alter.test,v 1.3 2007/12/13 21:54:11 drh Exp $
sl@0: 
sl@0: set testdir [file dirname $argv0]
sl@0: source $testdir/tester.tcl
sl@0: 
sl@0: ifcapable !vtab {
sl@0:   finish_test
sl@0:   return
sl@0: }
sl@0: 
sl@0: # Register the echo module.
sl@0: #
sl@0: # This test uses a special feature of the echo module. If the name
sl@0: # of the virtual table is a prefix of the name of the underlying
sl@0: # real table (for example if the v-table is "tbl" and the real table
sl@0: # is "tbl_base"), then the name of the real table is modified
sl@0: # when an "ALTER TABLE ... RENAME TO" is executed on the v-table.
sl@0: # For example:
sl@0: #
sl@0: #   sqlite> CREATE TABLE t1_base(a, b, c); 
sl@0: #   sqlite> CREATE VIRTUAL TABLE t1 USING(t1_base);
sl@0: #   sqlite> ALTER TABLE t1 RENAME TO t2;
sl@0: #   sqlite> SELECT tbl_name FROM sqlite_master;
sl@0: #   t2_base
sl@0: #   t2
sl@0: #
sl@0: register_echo_module [sqlite3_connection_pointer db]
sl@0: 
sl@0: 
sl@0: # Try to rename an echo table. Make sure nothing terrible happens.
sl@0: #
sl@0: do_test vtab_alter-1.1 {
sl@0:   execsql { CREATE TABLE t1(a, b VARCHAR, c INTEGER) }
sl@0: } {}
sl@0: do_test vtab_alter-1.2 {
sl@0:   execsql { CREATE VIRTUAL TABLE t1echo USING echo(t1) }
sl@0: } {}
sl@0: do_test vtab_alter-1.3 {
sl@0:   catchsql { SELECT * FROM t1echo }
sl@0: } {0 {}}
sl@0: do_test vtab_alter-1.4 {
sl@0:   execsql { ALTER TABLE t1echo RENAME TO new }
sl@0: } {}
sl@0: do_test vtab_alter-1.5 {
sl@0:   catchsql { SELECT * FROM t1echo }
sl@0: } {1 {no such table: t1echo}}
sl@0: do_test vtab_alter-1.6 {
sl@0:   catchsql { SELECT * FROM new }
sl@0: } {0 {}}
sl@0: 
sl@0: # Try to rename an echo table that renames its base table. Make 
sl@0: # sure nothing terrible happens.
sl@0: #
sl@0: do_test vtab_alter-2.1 {
sl@0:   execsql { 
sl@0:     DROP TABLE new;
sl@0:     DROP TABLE t1;
sl@0:     CREATE TABLE t1_base(a, b, c);
sl@0:     CREATE VIRTUAL TABLE t1 USING echo('*_base');
sl@0:   }
sl@0: } {}
sl@0: do_test vtab_alter-2.2 {
sl@0:   execsql { 
sl@0:     INSERT INTO t1_base VALUES(1, 2, 3);
sl@0:     SELECT * FROM t1;
sl@0:   }
sl@0: } {1 2 3}
sl@0: do_test vtab_alter-2.3 {
sl@0:   execsql { ALTER TABLE t1 RENAME TO x }
sl@0: } {}
sl@0: do_test vtab_alter-2.4 {
sl@0:   execsql { SELECT * FROM x; }
sl@0: } {1 2 3}
sl@0: do_test vtab_alter-2.5 {
sl@0:   execsql { SELECT * FROM x_base; }
sl@0: } {1 2 3}
sl@0: 
sl@0: # Cause an error to occur when the echo module renames its
sl@0: # backing store table.
sl@0: #
sl@0: do_test vtab_alter-3.1 {
sl@0:   execsql  { CREATE TABLE y_base(a, b, c) }
sl@0:   catchsql { ALTER TABLE x RENAME TO y }
sl@0: } {1 {SQL logic error or missing database}}
sl@0: do_test vtab_alter-3.2 {
sl@0:   execsql  { SELECT * FROM x }
sl@0: } {1 2 3}
sl@0: 
sl@0: finish_test