sudoclass/spec/container.spec.js

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

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

describe('Sudo Container Class', function() {
	beforeEach(function() {
		container = new _.Container();
		child1 = new _.Container({attributes: {id: 'theChaste'}});
		child2 = new _.Container({attributes: {id: 'theBrave'}});
		cid1 = child1.uid;
		cid2 = child2.uid;
	});

	it('Is an instance of Container', function() {
		expect(container instanceof _.Container).toBe(true);
	});

	it('has a children array', function() {
		expect(Array.isArray(container.children)).toBe(true);
	});

	it('has a childnames hash', function() {
		expect(typeof container.childNames).toBe('object');
	});

	it('Adds a child view, not appending the DOM', function() {
		container.addChild(child1, 'Galahad');
		expect(container.children.length).toBe(1);
	});

	it('Can fetch a child by index or name', function() {
		container.addChild(child1, 'Galahad').addChild(child2, 'Robin');
		expect(container.getChild(0).uid).toBe(cid1);
		expect(container.getChild('Galahad').uid).toBe(cid1);
		expect(container.getChild(1).uid).toBe(cid2);
		expect(container.getChild('Robin').uid).toBe(cid2);
	});

	it('Removes children by name or Index', function() {
		// works because of pass-by-ref
		var c = container.children;
		container.addChild(child1, 'Galahad').addChild(child2, 'Robin');
		expect(c.length).toBe(2);
		container.removeChild(1);
		expect(container.getChild('Robin')).toBeFalsy();
		expect(c.length).toBe(1);
		container.removeChild('Galahad');
		expect(c.length).toBe(0);
	});

	it('Removes all children', function() {
		container.addChild(child1, 'Galahad').addChild(child2, 'Robin');
		expect(container.children.length).toBe(2);
		container.removeChildren();
		expect(container.children.length).toBe(0);
	});

	it('Indexes children correctly, maintaining when adjusted', function() {
		container.addChild(child1, 'Galahad').addChild(child2, 'Robin');
		expect(child1.index).toBe(0);
		expect(child2.index).toBe(1);
		container.removeChild(0);
		expect(child2.index).toBe(0);
	});

	it('Can override methods and use `base` to call super', function() {
		container.addChild = function addChild(child, name) {
			child.parentOverrodeAddChild = true;
			this.base('addChild', child, name);
			return this;
		};
		container.removeChild = function removeChild(id) {
			this.getChild(id).parentOverrodeRemoveChild = true;
			this.base('removeChild', id);
			return this;
		};
		container.addChild(child1, 'Galahad').addChild(child2, 'Robin');
		expect(container.children.length).toBe(2);
		expect(container.getChild('Galahad').parentOverrodeAddChild).toBeTruthy();
		expect(container.getChild('Robin').parentOverrodeAddChild).toBeTruthy();

		container.removeChild('Galahad').removeChild('Robin');
		expect(container.children.length).toBe(0);
		expect(child1.parentOverrodeRemoveChild).toBeTruthy();
		expect(child2.parentOverrodeRemoveChild).toBeTruthy();
	});
	
});