#

# 2007 November 12

#

# 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 making sure that the names of collation

# sequences may be quoted using double quotes in SQL statements.

#

# $Id: collate9.test,v 1.2 2008/07/10 00:32:42 drh Exp $

set testdir [file dirname $argv0]

source $testdir/tester.tcl

proc reverse_sort {lhs rhs} {

  return [string compare $rhs $lhs]

}

db collate "reverse sort" reverse_sort

# This procedure executes the SQL.  Then it checks to see if the OP_Sort

# opcode was executed.  If an OP_Sort did occur, then "sort" is appended

# to the result.  If no OP_Sort happened, then "nosort" is appended.

#

# This procedure is used to check to make sure sorting is or is not

# occurring as expected.

#

proc cksort {sql} {

  set ::sqlite_sort_count 0

  set data [execsql $sql]

  if {$::sqlite_sort_count} {set x sort} {set x nosort}

  lappend data $x

  return $data

}

# Test plan:

#

#     collate9-1.* - Test collation sequences attached to table columns

#     collate9-2.* - Test collation sequences attached to expressions

#     collate9-3.* - Test collation sequences attached to an index

#     collate9-4.* - Test collation sequences as an argument to REINDEX

#

do_test collate9-1.1 {

  execsql {

    CREATE TABLE xy(x COLLATE "reverse sort", y COLLATE binary);

    INSERT INTO xy VALUES('one', 'one');

    INSERT INTO xy VALUES('two', 'two');

    INSERT INTO xy VALUES('three', 'three');

  }

} {}

do_test collate9-1.2 {

  execsql { 

    SELECT x FROM xy ORDER BY x

  }

} {two three one}

do_test collate9-1.3 {

  execsql { 

    SELECT y FROM xy ORDER BY y

  }

} {one three two}

do_test collate9-1.4 {

  cksort { 

    SELECT x FROM xy ORDER BY x

  }

} {two three one sort}

do_test collate9-1.5 {

  execsql { 

    CREATE INDEX xy_i ON xy(x)

  }

} {}

do_test collate9-1.6 {

  cksort { 

    SELECT x FROM xy ORDER BY x

  }

} {two three one nosort}

do_test collate9-2.1 {

  execsql { 

    SELECT x, x < 'seven' FROM xy ORDER BY x

  }

} {two 1 three 1 one 0}

do_test collate9-2.2 {

  execsql { 

    SELECT y, y < 'seven' FROM xy ORDER BY x

  }

} {two 0 three 0 one 1}

do_test collate9-2.3 {

  execsql { 

    SELECT y, y COLLATE "reverse sort" < 'seven' FROM xy ORDER BY x

  }

} {two 1 three 1 one 0}

do_test collate9-2.4 {

  execsql {

    SELECT y FROM xy ORDER BY y

  }

} {one three two}

do_test collate9-2.5 {

  execsql {

    SELECT y FROM xy ORDER BY y COLLATE "reverse sort"

  }

} {two three one}

do_test collate9-2.6 {

  execsql {

    SELECT y COLLATE "reverse sort" AS aaa FROM xy ORDER BY aaa

  }

} {two three one}

do_test collate9-3.1 {

  execsql {

    CREATE INDEX xy_i2 ON xy(y COLLATE "reverse sort");

  }

} {}

do_test collate9-3.2 {

  cksort { 

    SELECT y FROM xy ORDER BY y 

  }

} {one three two sort}

do_test collate9-3.3 {

  cksort { 

    SELECT y FROM xy ORDER BY y COLLATE "reverse sort"

  }

} {two three one nosort}

do_test collate9-3.4 {

  cksort { 

    SELECT y AS aaa FROM xy ORDER BY aaa

  }

} {one three two sort}

do_test collate9-3.5 {

  cksort { 

    SELECT y COLLATE "reverse sort" AS aaa FROM xy ORDER BY aaa

  }

} {two three one nosort}

ifcapable reindex {

  do_test collate9-4.1 {

    execsql {

      REINDEX "reverse sort"

    }

  } {}

  # Modify the "reverse sort" collation so that it now sorts in the same

  # order as binary.

  proc reverse_sort {lhs rhs} {

    return [string compare $lhs $rhs]

  }

  # The integrity check should now fail because the indexes created using

  # "reverse sort" are no longer in sync with the collation sequence

  # implementation.

  do_test collate9-4.2 {

    expr {"ok" eq [execsql { PRAGMA integrity_check }]}

  } {0}

  do_test collate9-4.3 {

    execsql {

      REINDEX "reverse sort"

    }

  } {}

  # Integrity check should now pass.

  do_test collate9-4.4 {

    expr {"ok" eq [execsql { PRAGMA integrity_check }]}

  } {1}

  do_test collate9-4.5 {

    cksort {

      SELECT x FROM xy ORDER BY x COLLATE "reverse sort"

    }

  } {one three two nosort}

}

finish_test