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Phonetic key generator to es6 and add some tests

This commit is contained in:
John Crepezzi 2017-10-31 21:10:25 -04:00
parent f161cc33b4
commit 3b6934e348
2 changed files with 49 additions and 28 deletions

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@ -1,33 +1,27 @@
// Draws inspiration from pwgen and http://tools.arantius.com/password
var PhoneticKeyGenerator = function() {
// No options
const randOf = (collection) => {
return () => {
return collection[Math.floor(Math.random() * collection.length)];
};
};
// Generate a phonetic key
PhoneticKeyGenerator.prototype.createKey = function(keyLength) {
var text = '';
var start = Math.round(Math.random());
for (var i = 0; i < keyLength; i++) {
text += (i % 2 == start) ? this.randConsonant() : this.randVowel();
// Helper methods to get an random vowel or consonant
const randVowel = randOf('aeiou');
const randConsonant = randOf('bcdfghjklmnpqrstvwxyz');
module.exports = class PhoneticKeyGenerator {
// Generate a phonetic key of alternating consonant & vowel
createKey(keyLength) {
let text = '';
const start = Math.round(Math.random());
for (let i = 0; i < keyLength; i++) {
text += (i % 2 == start) ? randConsonant() : randVowel();
}
return text;
}
return text;
};
PhoneticKeyGenerator.consonants = 'bcdfghjklmnpqrstvwxyz';
PhoneticKeyGenerator.vowels = 'aeiou';
// Get an random vowel
PhoneticKeyGenerator.prototype.randVowel = function() {
return PhoneticKeyGenerator.vowels[
Math.floor(Math.random() * PhoneticKeyGenerator.vowels.length)
];
};
// Get an random consonant
PhoneticKeyGenerator.prototype.randConsonant = function() {
return PhoneticKeyGenerator.consonants[
Math.floor(Math.random() * PhoneticKeyGenerator.consonants.length)
];
};
module.exports = PhoneticKeyGenerator;

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/* global describe, it */
const assert = require('assert');
const Generator = require('../../lib/key_generators/phonetic');
const vowels = 'aeiou';
const consonants = 'bcdfghjklmnpqrstvwxyz';
describe('RandomKeyGenerator', () => {
describe('randomKey', () => {
it('should return a key of the proper length', () => {
const gen = new Generator();
assert.equal(6, gen.createKey(6).length);
});
it('should alternate consonants and vowels', () => {
const gen = new Generator();
const key = gen.createKey(3);
assert.ok(consonants.includes(key[0]));
assert.ok(consonants.includes(key[2]));
assert.ok(vowels.includes(key[1]));
});
});
});