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| 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 |
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