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September 23, 2016 16:27
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Translate text to phone keys
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| var assert = require ('assert'), | |
| translatePhoneLetters = require('./escrevendo-celular').translatePhoneLetters; | |
| describe('translatePhoneLetters', function() { | |
| it('chamada vazia', function () { | |
| assert.equal(translatePhoneLetters(), '') | |
| }) | |
| it('vazio', function () { | |
| var str = '' | |
| assert.equal(translatePhoneLetters(str), '') | |
| }) | |
| it('A = 2', function () { | |
| var str = 'A' | |
| assert.equal(translatePhoneLetters(str), '2') | |
| }) | |
| it('B = 22', function () { | |
| var str = 'B' | |
| assert.equal(translatePhoneLetters(str), '22') | |
| }) | |
| it('C = 222', function () { | |
| var str = 'C' | |
| assert.equal(translatePhoneLetters(str), '222') | |
| }) | |
| it('D = 3', function () { | |
| var str = 'D' | |
| assert.equal(translatePhoneLetters(str), '3') | |
| }) | |
| it('AD = 23', function () { | |
| var str = 'AD' | |
| assert.equal(translatePhoneLetters(str), '23') | |
| }) | |
| it('AA = 2_2', function () { | |
| var str = 'AA' | |
| assert.equal(translatePhoneLetters(str), '2_2') | |
| }) | |
| it('AB = 2_22', function () { | |
| var str = 'AB' | |
| assert.equal(translatePhoneLetters(str), '2_22') | |
| }) | |
| it('espaço = 0', function () { | |
| var str = ' ' | |
| assert.equal(translatePhoneLetters(str), '0') | |
| }) | |
| it('TESTE DO OTAVIKO!!!!', function () { | |
| var str = 'SEMPRE ACESSO O DOJOPUZZLES' | |
| assert.equal(translatePhoneLetters(str), '77773367_7773302_222337777_777766606660366656667889999_9999555337777') | |
| }) | |
| }) |
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| const separator = '_' | |
| const keyboard = [ | |
| ['2', 'ABC'], | |
| ['3', 'DEF'], | |
| ['4', 'GHI'], | |
| ['5', 'JKL'], | |
| ['6', 'MNO'], | |
| ['7', 'PQRS'], | |
| ['8', 'TUV'], | |
| ['9', 'WXYZ'], | |
| ['0', ' '] | |
| ] | |
| function appendSeparator(letters, letter) { | |
| return letters.includes(letter) ? separator : '' | |
| } | |
| function getCodeFromLetter (letter, next) { | |
| const [key, letters] = keyboard.find(keyGroup => keyGroup[1].includes(letter)); | |
| return key.repeat(letters.indexOf(letter) + 1) + appendSeparator(letters, next) | |
| } | |
| function translatePhoneLetters (str) { | |
| return str && str.length ? | |
| str.split('').reduce((acc, letter, i, arr) => acc + getCodeFromLetter(letter, arr[i+1]), '') : | |
| '' | |
| } | |
| exports.translatePhoneLetters = translatePhoneLetters; |
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