english-words-to-numbers/index.test.js

Convert all words in a string into numbers. Unlike other packages, it can optionally return the entire revised string with Arabic numbers instead of words.

const wtn = require('./index');

const TESTS = [
  [
    'simple integer',
    '2345',
    '2345'
  ],
  [
    'simple decimal',
    '55.55',
    '55.55'
  ],
  [
    'simple integer in words',
    'twenty-three thousand five hundred seventy-six',
    '23576'
  ],
  [
    'simple integer in words, spaces instead of dashes',
    'twenty three thousand five hundred seventy six',
    '23576'
  ],
  [
    'simple integer in words, spaces instead of dashes, the word "and"',
    'twenty three thousand five hundred and seventy six',
    '23576'
  ],
  [
    'uppercase',
    'FIVE HUNDRED AND SEVENTEEN DECIMAL FIFTY-THREE',
    '517.53'
  ],
  [
    'two integers, mixed case',
    'Twenty-one million... Three hundred.',
    '21000000... 300.'
  ],
  [
    'simple decimal',
    'two million five decimal five',
    '2000005.5'
  ],
  [
    'simple mixed arabic and words',
    '23 million 3 hundred',
    '23000300'
  ],
  [
    'simple mixed arabic and words + decimal',
    '22 thousand three hundred point fifty-five',
    '22300.55'
  ],
  [
    'non-numeric words',
    'It was somewhere about 3 million, maybe 4 million at most.',
    'It was somewhere about 3000000, maybe 4000000 at most.'
  ],
  [
    'decimal before thousand, all in words',
    ', and three point five thousand people gathered there.',
    ', and 3500 people gathered there.'
  ],
  [
    'decimal before million',
    ', and 3.55 million people gathered there.',
    ', and 3550000 people gathered there.'
  ],
  [
    '"seventeen" is not matched by "seven"',
    ', and seventeen point seventy-five billion dollars, wow.',
    ', and 17750000000 dollars, wow.'
  ],
  [
    'integer before million',
    '...and more than a hundred fifty million records.',
    '...and more than 150000000 records.'
  ],
  [
    'article "a" is not being replaced incorrectly',
    'hi i want a place for 3 million, around eight hundred to a thousand feet',
    'hi i want a place for 3000000, around 800 to 1000 feet'
  ],
  [
    'decimal before "thousand", "million" plus cents',
    'six point six million and five cents',
    '6600005 cents'
  ],
  [
    'decimal before "thousand", "million" plus cents (2)',
    'six point six million dollars and five cents',
    '6600000 dollars and 5 cents'
  ],
  [
    'hunreds + million-like word',
    'there was as much as A HUNDRED FIFTY MILLION items there',
    'there was as much as 150000000 items there'
  ],
  [
    'XX hundred',
    'the repairs were over 12 hundred dollars',
    'the repairs were over 1200 dollars'
  ],
  [
    'XX hundred (complex XX)',
    'the repairs were over twenty five hundred dollars',
    'the repairs were over 2500 dollars'
  ],
  [
    'XX hundred (complex XX) plus cents',
    'the repairs came up at fourty five hundred point five dollars',
    'the repairs came up at 4500.5 dollars'
  ],
  [
    'mixed numbers and words in decimals',
    '3 point five thousand HKD',
    '3500 HKD'
  ],
  [
    'extras - k (1)',
    'the total is 2.7k usd',
    'the total is 2700 usd'
  ],
  [
    'extras - k (2)',
    'the total is one hundred and five k usd',
    'the total is 105000 usd'
  ],
  [
    'extras - grand (1)',
    'the total is 2.7 grand',
    'the total is 2700'
  ],
  [
    'extras - grand (2)',
    'the total is three hundred and fifty six grand',
    'the total is 356000'
  ],
  [
    'extras - mil (1)',
    'the total is 2.7 mil',
    'the total is 2700000'
  ],
  [
    'extras - mil (2)',
    'the total is three hundred and fifty six mil',
    'the total is 356000000'
  ],
  [
    'extras - bn (1)',
    'the total is 7 bn people',
    'the total is 7000000000 people'
  ],
  [
    'extras - bn (2)',
    'the total is seven point three bn people',
    'the total is 7300000000 people'
  ],
  [
    'iphone not converted to iph1',
    'iPhone',
    'iPhone',
  ],
  [
    '0 is not removed from string and "k" is not mistakenly recognized as thousand',
    'sample0123@example.tk',
    'sample0123@example.tk',
  ]
];


for (const [name, from, to] of TESTS) {
  test(name, () => {
    expect(wtn(from, { enableExtras: true })).toBe(to);
  });
}

/*
test('long decimal before "thousand", "million"', () => {
  expect(wtn('three point fourteen thousand one hundred and fifty-nine million', { enableExtras: true })).toBe('3141590');
});

test('long decimal before "thousand", "million" with complex first part of decimal', () => {
  expect(wtn('three point forty-five thousand one hundred and fifty-nine million', { enableExtras: true })).toBe('3451590');
});
*/

// three and a half thousand
// five and a half dollars

// somewhere between three and five dollars - fail
// somewhere between 12 hundred and five grand - fail 
// i am looking for 2-3 flats - fail

// three point fourteen thousand one hundred and fifty-nine million
// three point forty-five thousand one hundred and fifty-nine million
// more than three grand, and five hundred cars - will nto be supported
// ten to the forty-fifth => 10^45
// dozen, half a dozen, two dozen, twelve dozen

// one two two point three => 1 2 2.3 - not supported, ok
// three point one four one five nine
// cannot do big numbers, e.g. tens of trillions due to js limitations