porter_stemmer_de_spec.ts

/*
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*/

'use strict'

import { PorterStemmerDe as stemmer } from 'lib/natural'
import rawJson from '../spec/test_data/snowball_de.json'
const snowBallDict = rawJson as Record<string, string>
const DEBUG = false

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

    Object.keys(snowBallDict).forEach(word => {
      const stemmed = stemmer.stem(word)
      const expectedStem = snowBallDict[word]
      DEBUG && console.log(word + ' -> ' + stemmed)

      if (stemmed === expectedStem) {
        ok.push(word)
      } else {
        ko.push({
          word,
          expected: expectedStem,
          actual: stemmed
        })
      }
    })

    expect(ko.length).toBe(0)
  })
})