# 2006 January 30

 #

 # The author disclaims copyright to this source code.  In place of

 # a legal notice, here is a blessing:

 #

 #    May you do good and not evil.

 #    May you find forgiveness for yourself and forgive others.

 #    May you share freely, never taking more than you give.

 #

 #***********************************************************************

 # This file implements regression tests for SQLite library.

 #

 # This file implements tests to verify that ticket #1644 is

 # fixed.  Ticket #1644 complains that precompiled statements

 # are not expired correctly as a result of changes to TEMP

 # views and triggers.

 #

 set testdir [file dirname $argv0]

 source $testdir/tester.tcl

 ifcapable !tempdb||!view {

   finish_test

   return

 }  

 # Create two tables T1 and T2 and make V1 point to T1.

 do_test tkt1644-1.1 {

   execsql {

     CREATE TABLE t1(a);

     INSERT INTO t1 VALUES(1);

     CREATE TABLE t2(b);

     INSERT INTO t2 VALUES(99);

     CREATE TEMP VIEW v1 AS SELECT * FROM t1;

     SELECT * FROM v1;

   }

 } {1}

 # The "SELECT * FROM v1" should be in the TCL interface cache below.

 # It will continue to point to T1 unless the cache is invalidated when

 # the view changes.

 #

 do_test tkt1644-1.2 {

   execsql {

     DROP VIEW v1;

     CREATE TEMP VIEW v1 AS SELECT * FROM t2;

     SELECT * FROM v1;

   }

 } {99}

 # Cache an access to the T1 table.

 #

 do_test tkt1644-1.3 {

   execsql {

     SELECT * FROM t1;

   }

 } {1}

 # Create a temp table T1.  Make sure the cache is invalidated so that

 # the statement is recompiled and refers to the empty temp table.

 #

 do_test tkt1644-1.4 {

   execsql {

     CREATE TEMP TABLE t1(x);

   }

   execsql {

     SELECT * FROM t1;

   }

 } {}

 ifcapable view {

   do_test tkt1644-2.1 {

     execsql {

       CREATE TEMP TABLE temp_t1(a, b);

     }

     set ::DB [sqlite3_connection_pointer db]

     set ::STMT [sqlite3_prepare $::DB "SELECT * FROM temp_t1" -1 DUMMY]

     execsql {

       DROP TABLE temp_t1;

     }

     list [sqlite3_step $::STMT] [sqlite3_finalize $::STMT]

   } {SQLITE_ERROR SQLITE_SCHEMA}

   do_test tkt1644-2.2 {

     execsql {

       CREATE TABLE real_t1(a, b);

       CREATE TEMP VIEW temp_v1 AS SELECT * FROM real_t1;

     }

     set ::DB [sqlite3_connection_pointer db]

     set ::STMT [sqlite3_prepare $::DB "SELECT * FROM temp_v1" -1 DUMMY]

     execsql {

       DROP VIEW temp_v1;

     }

     list [sqlite3_step $::STMT] [sqlite3_finalize $::STMT]

   } {SQLITE_ERROR SQLITE_SCHEMA}

   do_test tkt1644-2.3 {

     execsql {

       CREATE TEMP VIEW temp_v1 AS SELECT * FROM real_t1 LIMIT 10 OFFSET 10;

     }

     set ::DB [sqlite3_connection_pointer db]

     set ::STMT [sqlite3_prepare $::DB "SELECT * FROM temp_v1" -1 DUMMY]

     execsql {

       DROP VIEW temp_v1;

     }

     list [sqlite3_step $::STMT] [sqlite3_finalize $::STMT]

   } {SQLITE_ERROR SQLITE_SCHEMA}

 }

 finish_test