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Annotation of embedaddon/sqlite3/test/vtab_alter.test, revision 1.1.1.1

1.1       misho       1: # 2007 June 26
                      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 file is testing the ALTER TABLE ... RENAME TO
                     13: # command on virtual tables.
                     14: #
                     15: # $Id: vtab_alter.test,v 1.3 2007/12/13 21:54:11 drh Exp $
                     16: 
                     17: set testdir [file dirname $argv0]
                     18: source $testdir/tester.tcl
                     19: 
                     20: ifcapable !vtab||!altertable {
                     21:   finish_test
                     22:   return
                     23: }
                     24: 
                     25: # Register the echo module.
                     26: #
                     27: # This test uses a special feature of the echo module. If the name
                     28: # of the virtual table is a prefix of the name of the underlying
                     29: # real table (for example if the v-table is "tbl" and the real table
                     30: # is "tbl_base"), then the name of the real table is modified
                     31: # when an "ALTER TABLE ... RENAME TO" is executed on the v-table.
                     32: # For example:
                     33: #
                     34: #   sqlite> CREATE TABLE t1_base(a, b, c); 
                     35: #   sqlite> CREATE VIRTUAL TABLE t1 USING(t1_base);
                     36: #   sqlite> ALTER TABLE t1 RENAME TO t2;
                     37: #   sqlite> SELECT tbl_name FROM sqlite_master;
                     38: #   t2_base
                     39: #   t2
                     40: #
                     41: register_echo_module [sqlite3_connection_pointer db]
                     42: 
                     43: 
                     44: # Try to rename an echo table. Make sure nothing terrible happens.
                     45: #
                     46: do_test vtab_alter-1.1 {
                     47:   execsql { CREATE TABLE t1(a, b VARCHAR, c INTEGER) }
                     48: } {}
                     49: do_test vtab_alter-1.2 {
                     50:   execsql { CREATE VIRTUAL TABLE t1echo USING echo(t1) }
                     51: } {}
                     52: do_test vtab_alter-1.3 {
                     53:   catchsql { SELECT * FROM t1echo }
                     54: } {0 {}}
                     55: do_test vtab_alter-1.4 {
                     56:   execsql { ALTER TABLE t1echo RENAME TO new }
                     57: } {}
                     58: do_test vtab_alter-1.5 {
                     59:   catchsql { SELECT * FROM t1echo }
                     60: } {1 {no such table: t1echo}}
                     61: do_test vtab_alter-1.6 {
                     62:   catchsql { SELECT * FROM new }
                     63: } {0 {}}
                     64: 
                     65: # Try to rename an echo table that renames its base table. Make 
                     66: # sure nothing terrible happens.
                     67: #
                     68: do_test vtab_alter-2.1 {
                     69:   execsql { 
                     70:     DROP TABLE new;
                     71:     DROP TABLE t1;
                     72:     CREATE TABLE t1_base(a, b, c);
                     73:     CREATE VIRTUAL TABLE t1 USING echo('*_base');
                     74:   }
                     75: } {}
                     76: do_test vtab_alter-2.2 {
                     77:   execsql { 
                     78:     INSERT INTO t1_base VALUES(1, 2, 3);
                     79:     SELECT * FROM t1;
                     80:   }
                     81: } {1 2 3}
                     82: do_test vtab_alter-2.3 {
                     83:   execsql { ALTER TABLE t1 RENAME TO x }
                     84: } {}
                     85: do_test vtab_alter-2.4 {
                     86:   execsql { SELECT * FROM x; }
                     87: } {1 2 3}
                     88: do_test vtab_alter-2.5 {
                     89:   execsql { SELECT * FROM x_base; }
                     90: } {1 2 3}
                     91: 
                     92: # Cause an error to occur when the echo module renames its
                     93: # backing store table.
                     94: #
                     95: do_test vtab_alter-3.1 {
                     96:   execsql  { CREATE TABLE y_base(a, b, c) }
                     97:   catchsql { ALTER TABLE x RENAME TO y }
                     98: } {1 {SQL logic error or missing database}}
                     99: do_test vtab_alter-3.2 {
                    100:   execsql  { SELECT * FROM x }
                    101: } {1 2 3}
                    102: 
                    103: finish_test