text: //     wink-nlp
  //
  //     Copyright (C) GRAYPE Systems Private Limited
  //
  //     This file is part of “wink-nlp”.
  //
  //     Permission is hereby granted, free of charge, to any
  //     person obtaining a copy of this software and
  //     associated documentation files (the "Software"), to
  //     deal in the Software without restriction, including
  //     without limitation the rights to use, copy, modify,
  //     merge, publish, distribute, sublicense, and/or sell
  //     copies of the Software, and to permit persons to
  //     whom the Software is furnished to do so, subject to
  //     the following conditions:
  //
  //     The above copyright notice and this permission notice
  //     shall be included in all copies or substantial
  //     portions of the Software.
  //
  //     THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF
  //     ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
  //     TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
  //     PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  //     THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
  //     DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
  //     CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  //     CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  //     DEALINGS IN THE SOFTWARE.
  
  //
  
  var chai = require( 'chai' );
  var mocha = require( 'mocha' );
  var model = require( './test-model/model.js' );
  var cache = require( '../src/cache.js' )( model.core(), model.featureFn );
  
  
  var expect = chai.expect;
  var describe = mocha.describe;
  var it = mocha.it;
  
  describe( 'cache', function () {
    it( 'property() should return null in case of unknown property', function () {
      expect( cache.property( 21, 'unk' ) ).to.equal( null );
    } );
  
    it( 'posOf() should return 6 in case of lexeme — the', function () {
      expect( cache.posOf( cache.lookup( 'the' )[ 0 ], 'pos' ) ).to.equal( 6 );
    } );
  
    it( 'currentSize() should current size of the lexicon', function () {
      expect( cache.currentSize() ).to.equal( 84921 );
    } );
  
    it( 'should compute oov number\'s pos as NUM', function () {
      cache.add( '333666999', 2 );
      expect( cache.posOf( cache.lookup( '333666999' )[ 0 ], 'pos' ) ).to.equal( 9 );
    } );
  } );
  