# 2005-02-14
#
# 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 file is testing the CREATE INDEX statement.
#


set testdir [file dirname $argv0]
source $testdir/tester.tcl

# Ticket #1115.  Make sure that when a UNIQUE index is created on a
# non-unique column (or columns) that it fails and that it leaves no
# residue behind.
#
do_test index3-1.1 {
  execsql {
    CREATE TABLE t1(a);
    INSERT INTO t1 VALUES(1);
    INSERT INTO t1 VALUES(1);
    SELECT * FROM t1;
  }
} {1 1}
do_test index3-1.2 {
  catchsql {
    BEGIN;
    CREATE UNIQUE INDEX i1 ON t1(a);
  }
} {1 {UNIQUE constraint failed: t1.a}}
do_test index3-1.3 {
  catchsql COMMIT;
} {0 {}}
integrity_check index3-1.4

# Backwards compatibility test:
#
# Verify that CREATE INDEX statements that use strings instead of 
# identifiers for the the column names continue to work correctly.
# This is undocumented behavior retained for backwards compatiblity.
#
do_execsql_test index3-2.1 {
  DROP TABLE t1;
  CREATE TABLE t1(a, b, c, d, e, 
                  PRIMARY KEY('a'), UNIQUE('b' COLLATE nocase DESC));
  CREATE INDEX t1c ON t1('c');
  CREATE INDEX t1d ON t1('d' COLLATE binary ASC);
  WITH RECURSIVE c(x) AS (VALUES(1) UNION SELECT x+1 FROM c WHERE x<30)
    INSERT INTO t1(a,b,c,d,e) 
      SELECT x, printf('ab%03xxy',x), x, x, x FROM c;
} {}
do_execsql_test index3-2.2 {
  SELECT a FROM t1 WHERE b='ab005xy' COLLATE nocase;
} {5}
do_execsql_test index3-2.2eqp {
  EXPLAIN QUERY PLAN
  SELECT a FROM t1 WHERE b='ab005xy' COLLATE nocase;
} {/USING INDEX/}


# This test corrupts the database file so it must be the last test
# in the series.
#
do_test index3-99.1 {
  execsql {
    PRAGMA writable_schema=on;
    UPDATE sqlite_master SET sql='nonsense' WHERE name='t1d'
  }
  db close
  catch { sqlite3 db test.db }
  catchsql { DROP INDEX t1c }
} {1 {malformed database schema (t1d)}}

finish_test