hellojs-xiaotian/tests/specs/unit/utils/extend.js

A clientside Javascript library for standardizing requests to OAuth2 web services (and OAuth1 - with a shim)

define([], function() {

	var extend = hello.utils.extend;

	describe('utils.extend', function() {

		it('should overide the properties in the first object with those within the second', function() {

			var a = {
				key: 'valueA'
			};

			var b = {
				key: 'valueB'
			};

			extend(a, b);

			// Check a is like b
			expect(a).to.eql(b);

			// But a is not b
			expect(a).to.not.equal(b);

		});

		it('should merge child objects', function() {

			var a = {
				key: 'valueA'
			};
			a.child = {};
			a.child.key = 'valueA';
			a.child.key2 = 'valueA';

			var b = {
				key: 'valueB'
			};
			b.child = b;

			extend(a, b);

			// Check a is like b
			expect(a).to.not.eql(b);

		});

		it('should merge arrays', function() {

			var a = [1];
			var b = [2];

			extend(a, b);

			// Check arrays have merged
			expect(a).to.eql([1, 2]);
		});

		it('should clone arrays if one does not exist', function() {

			var a = {};
			var b = {arr: [1]};

			extend(a, b);

			// Check arrays are the same, but different
			expect(a).to.have.property('arr');
			expect(a.arr).to.eql(b.arr);
			expect(a.arr).to.not.equal(b.arr);
		});

	});

});