Plato - dojo/tests/unit/

define([
	'intern!object',
	'intern/chai!assert',
	'dojo/_base/array',
	'../../../_base/lang',
	'../../../_base/kernel',
	'dojo/has',
	'dojo/has!host-browser?dojo/domReady!'
], function (registerSuite, assert, array, lang, kernel, has) {
	registerSuite({
		name: 'dojo/_base/lang',

'.exists': function () {
			var test = {
				foo: 0
			};
			assert.isTrue(lang.exists('foo', test), 'test.foo should exist');
			assert.isFalse(lang.exists('foo.bar', test), 'test.foo.bar should not exist');

// global tests
			assert.isFalse(lang.exists('_existsTest'), '_existsTest should not exist');
			kernel.global._existsTest = false;
			assert.isTrue(lang.exists('_existsTest'), '_existsTest should exist');
			assert.isFalse(lang.exists('_existsTest.bar'), '_existsTest.bar should not exist');

// scopeMap tests
			assert.isTrue(lang.exists('dojo.dijit'), 'dojo.dijit should exist');
			assert.isFalse(lang.exists('dojo.foo'), 'dojo.foo should not exist');
		},

'.getObject': function () {
			var test = {
				foo: {}
			};

assert.strictEqual(lang.getObject('foo', false, test), test.foo);
			assert.strictEqual(typeof lang.getObject('foo.bar', false, test), 'undefined');
			assert.strictEqual(typeof lang.getObject('foo.bar', true, test), 'object');

test.foo.bar.baz = 'test';
			assert.strictEqual(lang.getObject('foo.bar', false, test), test.foo.bar);

// global tests
			assert.strictEqual(typeof lang.getObject('_getObjectTest.bar', false), 'undefined');
			kernel.global._getObjectTest = {};
			assert.strictEqual(lang.getObject('_getObjectTest', false), kernel.global._getObjectTest);
			assert.strictEqual(typeof lang.getObject('_getObjectTest.bar', true), 'object');

// strangely, parser does this
			assert.strictEqual(typeof lang.getObject('./TestWidget'), 'undefined');

// empty path should return the same object
			assert.strictEqual(lang.getObject('', false, test), test);
			assert.strictEqual(lang.getObject('', false, null), null);
			assert.strictEqual(lang.getObject(''), undefined);
		},

'.setObject': function () {
			var test = {
				foo: 0
			};

lang.setObject('foo', { bar: 'test' }, test);
			assert.deepEqual(test, { foo: { bar: 'test' } });
		},

'.mixin': function () {
			var src = {
				foo: function () {
					console.debug('foo');
				},
				bar: 'bar'
			};
			var dest = {};
			lang.mixin(dest, src);

assert.typeOf(lang.mixin(), 'object');
			assert.typeOf(lang.mixin(undefined), 'object');
			assert.typeOf(lang.mixin(null), 'object');
			assert.typeOf(dest.foo, 'function');
			assert.typeOf(dest.bar, 'string');
		},

'.extend': function () {
			var src = {
				foo: function () {
					console.debug('foo');
				},
				bar: 'bar'
			};
			var test;
			function Dest() {}

lang.extend(Dest, src);
			test = new Dest();

assert.typeOf(test.foo, 'function');
			assert.typeOf(test.bar, 'string');
		},

'.isFunction': function () {
			function test() {}

assert.isTrue(lang.isFunction(new Function()));
			assert.isTrue(lang.isFunction(test));

if (has('host-browser')) { // test the Safari workaround for NodeList
				assert.isFalse(lang.isFunction(document.getElementsByName('html')));
				assert.isFalse(lang.isFunction(document.createElement('object')));
			}
		},

'.isObject': function () {
			assert.isFalse(lang.isObject(true));
			assert.isFalse(lang.isObject(false));
			assert.isFalse(lang.isObject('foo'));
			/*jshint -W053 */
			assert.isTrue(lang.isObject(new String('foo')));
			assert.isTrue(lang.isObject(null));
			assert.isTrue(lang.isObject({}));
			assert.isTrue(lang.isObject([]));
			/*jshint -W009 */
			assert.isTrue(lang.isObject(new Array()));
		},

'.isArray': function () {
			/*jshint -W009 */
			assert.isTrue(lang.isArray([]));
			assert.isTrue(lang.isArray(new Array()));
			assert.isFalse(lang.isArray({}));
			assert.isFalse(lang.isArray(''));
			assert.isFalse(lang.isArray(0));
			assert.isFalse(lang.isArray(NaN));
			assert.isFalse(lang.isArray(null));
			assert.isFalse(lang.isArray(undefined));
			if (typeof window !== 'undefined') {
				assert.isFalse(lang.isArray(window));
			}
			assert.isFalse(lang.isArray(Function));
			function Tricky() {}
			Tricky.prototype = [];
			assert.isFalse(lang.isArray(new Tricky()));
		},

'.isArrayLike': function () {
			/*jshint -W009 */
			assert.isFalse(lang.isArrayLike('thinger'));
			assert.isTrue(lang.isArrayLike(new Array()));
			assert.isFalse(lang.isArrayLike({}));
			assert.isTrue(lang.isArrayLike(arguments));
			assert.isFalse(lang.isArrayLike(''));
			assert.isFalse(lang.isArrayLike(false));
			assert.isFalse(lang.isArrayLike(NaN));
			assert.isFalse(lang.isArrayLike(undefined));
			assert.isFalse(lang.isArrayLike(null));
			if(typeof window !== 'undefined'){
				assert.isTrue(lang.isArrayLike(window));
			}
			assert.isFalse(lang.isArrayLike(Function));

assert.isTrue(lang.isArrayLike({0: 1, 1: 2, length: 2}));
			function Tricky() {}
			Tricky.prototype = [];
			assert.isTrue(lang.isArrayLike(new Tricky()));
		},

'.isString': function () {
			/*jshint -W053 */
			assert.isFalse(lang.isString(true));
			assert.isFalse(lang.isString(false));
			assert.isTrue(lang.isString('foo'));
			assert.isTrue(lang.isString(new String('foo')));
			assert.isFalse(lang.isString(null));
			assert.isFalse(lang.isString({}));
			assert.isFalse(lang.isString([]));
		},

'.partial': function () {
			var scope = { foo: 'bar' };
			var st1;
			var st2;
			var st3;

function thinger(arg1, arg2) {
				return [this.foo, arg1, arg2];
			}

st1 = lang.partial(thinger);
			assert.equal('bar', st1.call(scope)[0]);
			assert.equal(undefined, st1()[0]);

st2 = lang.partial(thinger, 'foo', 'bar');
			assert.equal('bar', st2()[2]);
			st3 = lang.partial(thinger, 'foo', 'bar');
		},

'.partial nested': function () {
			var st1;
			var st2;

function thinger(arg1, arg2) {
				return [arg1, arg2];
			}

st1 = lang.partial(thinger, 'foo');
			assert.equal(undefined, st1()[1]);
			assert.equal('bar', st1('bar')[1]);

// partials can accumulate
			st2 = lang.partial(st1, 'thud');
			assert.equal('foo', st2()[0]);
			assert.equal('thud', st2()[1]);
		},

'.hitch': function () {
			var scope = { foo: 'bar' };
			var scope2 = { foo: 'baz' };
			var st1;
			var st2;

function thinger() {
				return [this.foo, arguments.length];
			}

st1 = lang.hitch(scope, thinger);
			assert.equal('bar', st1()[0]);
			assert.equal(0, st1()[1]);

st2 = lang.hitch(scope2, thinger);
			assert.equal('baz', st2()[0]);
			assert.equal(0, st1()[1]);
			assert.equal(1, st1('blah')[1]);

// st2 should be "scope proof"
			assert.equal('baz', st2.call(scope)[0]);
		},

'.hitch with args': function () {
			var scope = { foo: 'bar' };
			var scope2 = { foo: 'baz' };
			var st1;
			var st2;

function thinger() {
				return [this.foo, arguments.length];
			}

st1 = lang.hitch(scope, thinger, 'foo', 'bar');
			assert.equal('bar', st1()[0]);
			assert.equal(2, st1()[1]);

st2 = lang.hitch(scope2, thinger, 'foo', 'bar');
			assert.equal('baz', st2()[0]);
			assert.equal(2, st2()[1]);
		},

'.hitch as partial': function () {
			var scope = { foo: 'bar' };
			var st1;
			var st2;

function thinger(arg1, arg2) {
				return [this.foo, arg1, arg2];
			}

st1 = lang.hitch(null, thinger);
			assert.equal('bar', st1.call(scope)[0]);
			assert.equal(undefined, st1()[0]);

st2 = lang.hitch(null, thinger, 'foo', 'bar');
			assert.equal('bar', st2()[2]);
		},

'.toArray': function () {
			var obj1 = [ 'foo', 'bar', 'spam', 'ham' ];
			var obj2;
			var div;
			var result;

function thinger() {
				return lang._toArray(arguments);
			}

obj2 = thinger.apply(this, obj1);
			assert.equal(obj1[0], obj2[0]);

if (has('host-browser')) {
				// test DomCollection
				div = document.createElement('div');
				div.innerHTML = '<a href="#"">link</a>text';
				result = lang._toArray(div.childNodes);
				assert.equal(2, result.length);
			}
		},

'.clone': function () {
			var obj1 = {
				foo: 'bar',
				answer: 42,
				jan102007: new Date(2007, 0, 10),
				baz: {
					a: null,
					b: [1, 'b', 2.3, true, false],
					c: {
						d: undefined,
						e: 99,
						f: function () { console.log(42); return 42; },
						g: /\d+/gm
					}
				},
				toString: function () { return 'meow'; }
			};

assert.deepEqual(obj1, lang.clone(obj1));
		},

'.delegate': function () {
			var a = {
				x: 1,
				y: function () { return 2; },
				z1: 99
			};
			var b = {
				x: 11,
				y: function () { return 12; },
				z2: 33,
				toString: function () { return 'bark!'; },
				toLocaleString: function () { return 'le bark-s!'; }
			};
			var c;

assert.strictEqual(1, a.x);
			assert.strictEqual(2, a.y());
			assert.strictEqual(99, a.z1);

c = lang.delegate(a, b);

assert.strictEqual(1, a.x);
			assert.strictEqual(2, a.y());
			assert.strictEqual(99, a.z1);
			assert.strictEqual(11, c.x);
			assert.strictEqual(12, c.y());
			assert.strictEqual('bark!', c.toString());
			assert.strictEqual('le bark-s!', c.toLocaleString());
			assert.strictEqual(99, c.z1);
			assert.strictEqual(33, c.z2);
		},

'.replace with object': function () {
			var objectContext = {
					nick: 'Bob',
					name: {
						first:  'Robert',
						middle: 'X',
						last:   'Cringely'
					}
				};
			var s1 = lang.replace('Hello, {name.first} {name.last} AKA {nick}!', objectContext);
			assert.equal('Hello, Robert Cringely AKA Bob!', s1);
		},

'.replace with array context': function () {
			var arrayContext = ['Robert', 'X', 'Cringely'];
			var s2 = lang.replace('Hello, {0} {2}!', arrayContext);
			assert.equal('Hello, Robert Cringely!', s2);
		},

'.replace with function': function () {
			function sum(a) {
				var t = 0;
				array.forEach(a, function (x) { t += x; });
				return t;
			}

'.replace with regex': function () {
			var s4 = lang.replace('Hello, ${0} ${2}!', ['Robert', 'X', 'Cringely'], /\$\{([^\}]+)\}/g);
			assert.equal('Hello, Robert Cringely!', s4);
		}
	});
});

dojo/tests/unit/_base/lang.js

Maintainability

Lines of code

Difficulty

Estimated Errors

Function weight

By Complexity

By SLOC