sudoclass/spec/base.spec.js

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

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

describe('Sudo Base Object', function() {
	beforeEach(function() {
		b = new _.Base();
		d = new _.Base();
		d.role = 'encyclopediaSalesman';
		d.burgle = function() {
			return this.role;
		};
		d.addedAsDelegate = function() {
			this.added = true;
		};
	});

	it('is an instance of the Base class', function() {
		expect(b instanceof _.Base).toBe(true);
	});

	it('has a unique id', function() {
		expect(b.uid).toBeTruthy();
	});

	it('has an empty delegates Array', function() {
		expect(Array.isArray(b.delegates)).toBe(true);
	});

	it('can add a delegate', function() {
		b.addDelegate(d);
		expect(b.delegates.length).toBe(1);
	});

	it('calls addedAsDelegate if present', function() {
		var spy = spyOn(d, 'addedAsDelegate').andCallThrough();
		b.addDelegate(d);
		expect(spy).toHaveBeenCalled();
		expect(d.added).toBe(true);
	});

	it('can fetch a delegate by role', function() {
		b.addDelegate(d);
		expect(b.delegate('encyclopediaSalesman')).toBe(d);
	});

	it('returns a function when passed a matching name', function() {
		b.addDelegate(d);
		expect(typeof b.delegate('encyclopediaSalesman', 'burgle')).toBe('function');
	});

	it('returns a function, bound to the delegate, if delegated to', function() {
		b.addDelegate(d);
		expect(b.delegate('encyclopediaSalesman', 'burgle')()).toBe('encyclopediaSalesman');
	});

	it('can remove a delegate', function() {
		e = new _.Base();
		e.role = 'suspiciousHomeOwner';
		b.addDelegate(d);
		b.addDelegate(e);
		expect(b.delegates.length).toBe(2);
		b.removeDelegate('encyclopediaSalesman');
		expect(b.delegates.length).toBe(1);
	});
});