dfolkins-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 palindrome", function() {
      let plainPalindrome = new Phrase ("racecar");
      assert(plainPalindrome.palindrome());
    });
    
    it("should return true for a mixed-case palindrome", function() {
      let mixedCase = new Phrase ("Racecar");
      assert(mixedCase.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");
      });
    });
  });
});