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sqlite3

    1: # 2010 Jun 28
    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.
   12: #
   13: 
   14: set testdir [file dirname $argv0]
   15: source $testdir/tester.tcl
   16: source $testdir/malloc_common.tcl
   17: source $testdir/lock_common.tcl
   18: 
   19: # This block tests that if one client modifies the database schema, a
   20: # second client updates its internal cache of the database schema before
   21: # executing any queries. Specifically, it does not return a "no such column"
   22: # or "no such table" error if the table or column in question does exist
   23: # but was added after the second client loaded its cache of the database
   24: # schema.
   25: #
   26: # Types of schema modifications:
   27: #
   28: #   1. Adding a database table.
   29: #   2. Adding a database view.
   30: #   3. Adding a database index.
   31: #   4. Adding a database trigger.
   32: #   5. Adding a column to an existing table (ALTER TABLE).
   33: #
   34: do_multiclient_test tn {
   35: 
   36:   # Have connections [db1] and [db2] load the current database schema.
   37:   #
   38:   sql1 { SELECT * FROM sqlite_master }
   39:   sql2 { SELECT * FROM sqlite_master }
   40: 
   41:   foreach {tn2 c1 c2} {
   42:     1  { CREATE TABLE t1(a, b) }       { SELECT * FROM t1            }
   43:     2  { CREATE TABLE t2(a, b) }       { UPDATE t2 SET a = b         }
   44:     3  { CREATE TABLE t3(a, b) }       { DELETE FROM t3              }
   45:     4  { CREATE TABLE t4(a, b) }       { INSERT INTO t4 VALUES(1, 2) }
   46:     5  { CREATE TABLE t5(a, b) }       { DROP TABLE t5 }
   47:     6  { CREATE TABLE t6(a, b) }       { CREATE INDEX i1 ON t6(a) }
   48: 
   49:     7  { ALTER TABLE t1 ADD COLUMN c } { SELECT a, b, c FROM t1 }
   50:     8  { ALTER TABLE t2 ADD COLUMN c } { UPDATE t2 SET a = c }
   51:     9  { ALTER TABLE t2 ADD COLUMN d } { UPDATE t2 SET d = c }
   52:     10 { ALTER TABLE t3 ADD COLUMN c } { DELETE FROM t3 WHERE c>10 }
   53:     11 { ALTER TABLE t4 ADD COLUMN c } { INSERT INTO t4(a,b,c) VALUES(1,2,3) }
   54:     12 { ALTER TABLE t6 ADD COLUMN c } { CREATE INDEX i2 ON t6(c) }
   55:     13 { ALTER TABLE t6 ADD COLUMN d } { 
   56:          CREATE TRIGGER tr1 AFTER UPDATE OF d ON t6 BEGIN
   57:            SELECT 1, 2, 3;
   58:          END;
   59:     }
   60: 
   61:     14 { CREATE INDEX i3 ON t1(a) }    { DROP INDEX i3 }
   62:     15 { CREATE INDEX i4 ON t2(a) }    {
   63:          SELECT * FROM t2 INDEXED BY i4 ORDER BY a
   64:     }
   65: 
   66:     16 { CREATE TRIGGER tr2 AFTER INSERT ON t3 BEGIN SELECT 1 ; END } {
   67:          DROP TRIGGER tr2
   68:     }
   69: 
   70:     17  { CREATE VIEW v1 AS SELECT * FROM t1 } { SELECT a,b,c   FROM v1 }
   71:     18  { ALTER TABLE t1 ADD COLUMN d        } { SELECT a,b,c,d FROM v1 }
   72: 
   73:     19  { CREATE TABLE t7(a, b) } {
   74:           DROP TABLE IF EXISTS t7; CREATE TABLE t7(c, d);
   75:     }
   76:     20  { CREATE INDEX i5 ON t7(c, d) } {
   77:           DROP INDEX IF EXISTS i5; CREATE INDEX i5 ON t7(c)
   78:     }
   79:     21  { CREATE TRIGGER tr3 BEFORE DELETE ON t7 BEGIN SELECT 1, 2, 3 ; END } {
   80:           DROP TRIGGER IF EXISTS tr3;
   81:           CREATE TRIGGER tr3 AFTER INSERT ON t7 BEGIN SELECT 1, 2, 3 ; END 
   82:     }
   83: 
   84:     22  { CREATE TABLE t8(a, b) }       {
   85:          CREATE TRIGGER tr4 AFTER UPDATE OF a ON t8 BEGIN
   86:            SELECT 1, 2, 3;
   87:          END;
   88:     }
   89:   } {
   90:     do_test schema3-1.$tn.$tn2 {
   91:       sql1 $c1
   92:       sql2 $c2
   93:     } {}
   94:   }
   95: }
   96: 
   97: finish_test