ashnaz87-palindrome/test/test.js

Palindrome detector

let assert = require('assert');
let Phrase = require('../index.js');

describe('Phrase', function() {

  describe('#palindrome', function() {

    it('should return false for a non-palindrome', function() {
      let nonPalindrome = new Phrase('apple');
      assert(!nonPalindrome.palindrome());
    });

    it('should return true for a plain palindrome', function() {
      let plainPalindrome = new Phrase('racecar');
      assert(plainPalindrome.palindrome());
    });

    it('should return true for a mixed-case palindrome', function() {
      let mixedCasePalindrome = new Phrase('RaceCar');
      assert(mixedCasePalindrome.palindrome());
    });

    it('should return true for a palindrome with punctuation', function() {
      let punctuatedPalindrome = new Phrase("Madam, I'm Adam.");
      assert(punctuatedPalindrome.palindrome());
    });

    it('should return false for an empty string', function() {
      let emptyPhrase = new Phrase('');
      assert(!emptyPhrase.palindrome());
    });

    describe('#letters', function() {
      it('should return only letters', function() {
        let punctuatedPalindrome = new Phrase("Madam, I'm Adam.");
        assert.strictEqual(punctuatedPalindrome.letters(), 'MadamImAdam');
      });
      it("should return the empty string on no match", function () {
        let noLetters = new Phrase('1234.56');
        assert.strictEqual(noLetters.letters(), '');
      });
    });

  });

});