porter_stemmer_pt_spec.ts

/*
Copyright (c) 2019, Luís Rodrigues, Hugo W.L. ter Doest

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
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The above copyright notice and this permission notice shall be included in
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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THE SOFTWARE.
*/

'use strict'

import { PorterStemmerPt as stemmer } from 'lib/natural'
import rawObj from '../spec/test_data/snowball_pt.json'
const snowBallDict = rawObj as Record<string, string>

const DEBUG = false

describe('porter_stemmer_pt', function () {
  it('should perform stemming on a lot of words', function () {
    const errors = []

    Object.keys(snowBallDict).forEach(word => {
      const stemmed = stemmer.stem(word)
      const expectedStem = snowBallDict[word]
      if (stemmed !== snowBallDict[word]) {
        DEBUG && console.log('Error:', word, 'Expected:', expectedStem, 'Got:', stemmed)
        errors.push({
          word,
          expected: expectedStem,
          actual: stemmed
        })
      }
    })

    expect(errors.length).toEqual(0)
  })
})