sudoclass/spec/change.spec.js

Base, Observable and Delegate classes from the sudo.js library

var _ = require('../lib/sudoclass');

describe('Sudo Change Delegate', function() {

	beforeEach(function(){
		model = _.extend(new _.Model(), _.extensions.observable);
		view = new _.Container();
		view.denyDivinity = function(obj) {};
		view.addDelegate(new _.delegates.Change({
			filters: {
				isMessiah: 'denyDivinity',
				'is.messiah': 'denyDivinity'
			}
		}));
		model.observe(view.delegate('change', 'filter'));
	});

	it('establishes a delegate', function() {
		expect(view.delegates[0]).toBeTruthy();
		expect(view.delegates[0].delegator).toBeTruthy();
	});

	it('filters the changerecord', function() {
		var spy = spyOn(view, 'denyDivinity');
		model.set('isMessiah', 'I am not the messiah');
		expect(spy).toHaveBeenCalled();
	});

	it('does not respond to change records not listed in its filters', function() {
		var spy = spyOn(view, 'denyDivinity');
		model.set('hatesTheRomans', 'Alot!');
		expect(spy).not.toHaveBeenCalled();
	});

	it('filters by path', function() {
		var spy = spyOn(view, 'denyDivinity');
		model.set('is.messiah', false);
		expect(spy).toHaveBeenCalled();
	});

	it('filters by path, ignoring paths not stated', function() {
		var spy = spyOn(view, 'denyDivinity');
		model.set('is.naughty', true);
		expect(spy).not.toHaveBeenCalled();
	});

	it('observes unset', function() {
		model.setPath('is.messiah', true);
		var spy = spyOn(view, 'denyDivinity');
		model.unsetPath('is.messiah');
		expect(spy).toHaveBeenCalled();
	});

	it('can add a filter', function() {
		var del = view.delegate('change');
		del.addFilter('isNaughty', 'acceptIt');
		expect(del.data.filters.isNaughty).toBe('acceptIt');
  });

	it('can remove a filter', function() {
		var del = view.delegate('change');
		del.removeFilter('isNaughty');
		expect(del.data.filters.isNaughty).toBeFalsy();
	});

	it('removes a delegate', function() {
		var del = view.delegate('change');
		view.removeDelegate('change');
		expect(view.delegates.length).toBe(0);
		expect(del.delegator).toBeFalsy();
	});
});