[sqlite] Remove obsolete reference version 3.8.7.4.

third_party/sqlite/sqlite-src-3080704/test/delete2.test

-# 2003 September 6
-#
-# 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.  The
-# focus of this script is a test to replicate the bug reported by
-# ticket #842.
-#
-# Ticket #842 was a database corruption problem caused by a DELETE that
-# removed an index entry by not the main table entry.  To recreate the
-# problem do this:
-#
-#   (1) Create a table with an index.  Insert some data into that table.
-#   (2) Start a query on the table but do not complete the query.
-#   (3) Try to delete a single entry from the table.
-#
-# Step 3 will fail because there is still a read cursor on the table.
-# But the database is corrupted by the DELETE.  It turns out that the
-# index entry was deleted first, before the table entry.  And the index
-# delete worked.  Thus an entry was deleted from the index but not from
-# the table.
-#
-# The solution to the problem was to detect that the table is locked
-# before the index entry is deleted.
-#
-# $Id: delete2.test,v 1.8 2008/07/08 15:59:52 danielk1977 Exp $
-#
-
-set testdir [file dirname $argv0]
-source $testdir/tester.tcl
-
-# Create a table that has an index.
-#
-do_test delete2-1.1 {
-  set DB [sqlite3_connection_pointer db]
-  execsql {
-    CREATE TABLE q(s string, id string, constraint pk_q primary key(id));
-    BEGIN;
-    INSERT INTO q(s,id) VALUES('hello','id.1');
-    INSERT INTO q(s,id) VALUES('goodbye','id.2');
-    INSERT INTO q(s,id) VALUES('again','id.3');
-    END;
-    SELECT * FROM q;
-  }
-} {hello id.1 goodbye id.2 again id.3}
-do_test delete2-1.2 {
-  execsql {
-    SELECT * FROM q WHERE id='id.1';
-  }
-} {hello id.1}
-integrity_check delete2-1.3
-
-# Start a query on the table.  The query should not use the index.
-# Do not complete the query, thus leaving the table locked.
-#
-do_test delete2-1.4 {
-  set STMT [sqlite3_prepare $DB {SELECT * FROM q} -1 TAIL]
-  sqlite3_step $STMT
-} SQLITE_ROW
-integrity_check delete2-1.5
-
-# Try to delete a row from the table while a read is in process.
-# As of 2006-08-16, this is allowed.  (It used to fail with SQLITE_LOCKED.)
-#
-do_test delete2-1.6 {
-  catchsql {
-    DELETE FROM q WHERE rowid=1
-  }
-} {0 {}}
-integrity_check delete2-1.7
-do_test delete2-1.8 {
-  execsql {
-    SELECT * FROM q;
-  }
-} {goodbye id.2 again id.3}
-
-# Finalize the query, thus clearing the lock on the table.  Then
-# retry the delete.  The delete should work this time.
-#
-do_test delete2-1.9 {
-  sqlite3_finalize $STMT
-  catchsql {
-    DELETE FROM q WHERE rowid=1
-  }
-} {0 {}}
-integrity_check delete2-1.10
-do_test delete2-1.11 {
-  execsql {
-    SELECT * FROM q;
-  }
-} {goodbye id.2 again id.3}
-
-do_test delete2-2.1 {
-  execsql {
-    CREATE TABLE t1(a, b);
-    CREATE TABLE t2(c, d);
-    INSERT INTO t1 VALUES(1, 2);
-    INSERT INTO t2 VALUES(3, 4);
-    INSERT INTO t2 VALUES(5, 6);
-  }
-} {}
-do_test delete2-2.2 {
-  set res [list]
-  db eval {
-    SELECT CASE WHEN c = 5 THEN b ELSE NULL END AS b, c, d FROM t1, t2
-  } {
-    db eval {DELETE FROM t1}
-    lappend res $b $c $d
-  }
-  set res
-} {{} 3 4 {} 5 6}
-
-finish_test