github.com/jdgcs/sqlite3@v1.12.1-0.20210908114423-bc5f96e4dd51/testdata/tcl/vtab_alter.test (about)

     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}}
    99  do_test vtab_alter-3.2 {
   100    execsql  { SELECT * FROM x }
   101  } {1 2 3}
   102  
   103  finish_test