cookieReaderSpec.js

'use strict';

describe('$$cookieReader', function() {
  var $$cookieReader, document;

  function deleteAllCookies() {
    var cookies = document.cookie.split(';');
    var path = window.location.pathname;

    for (var i = 0; i < cookies.length; i++) {
      var cookie = cookies[i];
      var eqPos = cookie.indexOf('=');
      var name = eqPos > -1 ? cookie.substr(0, eqPos) : cookie;
      var parts = path.split('/');
      while (parts.length) {
        document.cookie = name + '=;path=' + (parts.join('/') || '/') + ';expires=Thu, 01 Jan 1970 00:00:00 GMT';
        parts.pop();
      }
    }
  }

  beforeEach(function() {
    document = window.document;
    deleteAllCookies();
    expect(document.cookie).toEqual('');

    inject(function(_$$cookieReader_) {
      $$cookieReader = _$$cookieReader_;
    });
  });


  afterEach(function() {
    deleteAllCookies();
    expect(document.cookie).toEqual('');
  });


  describe('get via $$cookieReader()[cookieName]', function() {

    it('should return undefined for nonexistent cookie', function() {
      expect($$cookieReader().nonexistent).not.toBeDefined();
    });


    it('should return a value for an existing cookie', function() {
      document.cookie = 'foo=bar=baz;path=/';
      expect($$cookieReader().foo).toEqual('bar=baz');
    });

    it('should return the the first value provided for a cookie', function() {
      // For a cookie that has different values that differ by path, the
      // value for the most specific path appears first.  $$cookieReader()
      // should provide that value for the cookie.
      document.cookie = 'foo="first"; foo="second"';
      expect($$cookieReader()['foo']).toBe('"first"');
    });

    it('should decode cookie values that were encoded by puts', function() {
      document.cookie = 'cookie2%3Dbar%3Bbaz=val%3Due;path=/';
      expect($$cookieReader()['cookie2=bar;baz']).toEqual('val=ue');
    });


    it('should preserve leading & trailing spaces in names and values', function() {
      document.cookie = '%20cookie%20name%20=%20cookie%20value%20';
      expect($$cookieReader()[' cookie name ']).toEqual(' cookie value ');
      expect($$cookieReader()['cookie name']).not.toBeDefined();
    });

    it('should decode special characters in cookie values', function() {
      document.cookie = 'cookie_name=cookie_value_%E2%82%AC';
      expect($$cookieReader()['cookie_name']).toEqual('cookie_value_€');
    });

    it('should not decode cookie values that do not appear to be encoded', function() {
      // see #9211 - sometimes cookies contain a value that causes decodeURIComponent to throw
      document.cookie = 'cookie_name=cookie_value_%XX';
      expect($$cookieReader()['cookie_name']).toEqual('cookie_value_%XX');
    });
  });


  describe('getAll via $$cookieReader()', function() {

    it('should return cookies as hash', function() {
      document.cookie = 'foo1=bar1;path=/';
      document.cookie = 'foo2=bar2;path=/';
      expect($$cookieReader()).toEqual({'foo1':'bar1', 'foo2':'bar2'});
    });


    it('should return empty hash if no cookies exist', function() {
      expect($$cookieReader()).toEqual({});
    });
  });


  it('should initialize cookie cache with existing cookies', function() {
    document.cookie = 'existingCookie=existingValue;path=/';
    expect($$cookieReader()).toEqual({'existingCookie':'existingValue'});
  });

});


describe('$$cookieReader with mock $document', function() {

  var $$cookieReader, mockDocument;

  beforeEach(function() {
    mockDocument = {};
    module(function($provide) {
      $provide.constant('$document', [mockDocument]);
    });
    inject(function(_$$cookieReader_) {
      $$cookieReader = _$$cookieReader_;
    });
  });

  describe('getAll via $$cookieReader()', function() {

    it('should return an empty object if cookies cannot be read', function() {
      var cookieSpy = jasmine.createSpy('cookie').and.throwError('Can\'t touch this!');
      Object.defineProperty(mockDocument, 'cookie', { get: cookieSpy });
      expect($$cookieReader()).toEqual({});
      expect(cookieSpy).toHaveBeenCalled();
    });

  });

});