SQLite

# 2016 July 29
#
# 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 syntax errors involving row-values and
# virtual tables.
#

set testdir [file dirname $argv0]
source $testdir/tester.tcl
set ::testprefix rowvalue5

proc vtab_command {method args} {
  switch -- $method {
    xConnect {
      return "CREATE TABLE t1(a, b, c, d, expr)"
    }

    xBestIndex {
      set COL(0) a
      set COL(1) b
      set COL(2) c
      set COL(3) d
      set COL(4) expr

      set OP(eq) =
      set OP(ne) !=
      set OP(gt) >
      set OP(le) <=
      set OP(lt) <
      set OP(ge) >=
      set OP(match) MATCH
      set OP(like) LIKE
      set OP(glob) GLOB
      set OP(regexp) REGEXP

      set clist [lindex $args 0]
      set ret [list]
      set elist [list]
      set i 0
      foreach c $clist {
        array set C $c
        if {$C(usable)} {
          lappend ret omit $i
          lappend elist "$COL($C(column)) $OP($C(op)) %$i%"
        }
        incr i
      }

      lappend ret idxstr [join $elist " AND "]
      #puts "xBestIndex: $ret"
      return $ret
    }

    xFilter {
      foreach {idxnum idxstr arglist} $args {}
      set i 0
      set ee $idxstr
      foreach a $arglist {
        if {[string is double $a]==0} {
          set a "'[string map {' ''} $a]'"
        }
        set ee [string map [list "%$i%" $a] $ee]
        incr i
      }
      set ee [string map [list "'" "''"] $ee]

      set ret [list sql "SELECT 1, 'a', 'b', 'c', 'd', '$ee'"]
      #puts "xFilter: $ret"
      return $ret
    }
  }

  return {}
}

register_tcl_module db
do_execsql_test 1.0 {
  CREATE VIRTUAL TABLE x1 USING tcl(vtab_command);
} {}


foreach {tn where res} {
  1 "1"                              {{}}
  2 "a=1"                            {{a = 1}}
  3 "a=1 AND 4 = b"                  {{a = 1 AND b = 4}}
  4 "c>'hello'"                      {{c > 'hello'}}
  5 "c<='hel''lo'"                   {{c <= 'hel''lo'}}
  6 "(a, b) = (SELECT 9, 10)"        {{a = 9 AND b = 10}}
  7 "(+a, b) = (SELECT 'a', 'b')"    {{b = 'b'}}
  8 "(a, +b) = (SELECT 'a', 'b')"    {{a = 'a'}}
  10 "(a, b) IN (SELECT 9, 10 UNION SELECT 11, 12)" 
      {{a = 9 AND b = 10} {a = 11 AND b = 12}}
  11 "(+a, b) IN (SELECT 'a', 'b')" {{b = 'b'}}
  12 "(a, +b) IN (SELECT 'a', 'b')" {{a = 'a'}}

  13 "(a, b) < ('d', 'e')"  {{a <= 'd'}}
  14 "(a, b) < ('a', 'c')"  {{a <= 'a'}}
  15 "(a, b) <= ('a', 'b')" {{a <= 'a'}}
  16 "(a, b) < ('a', 'b')"  {}
} {
  do_execsql_test 1.$tn "SELECT expr FROM x1 WHERE $where" $res
}

finish_test