f9b0a46dfd
* [kbn-expect] add optional error message * review feedback: replace error message with provided one * add optional message for contain/string
999 lines
24 KiB
JavaScript
999 lines
24 KiB
JavaScript
/* eslint-disable */
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var exports = module.exports;
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/**
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* Exports.
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*/
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module.exports = expect;
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expect.Assertion = Assertion;
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/**
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* Exports version.
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*/
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expect.version = '0.3.1';
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/**
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* Possible assertion flags.
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*/
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var flags = {
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not: ['to', 'be', 'have', 'include', 'only']
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, to: ['be', 'have', 'include', 'only', 'not']
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, only: ['have']
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, have: ['own']
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, be: ['an']
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};
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function expect (obj) {
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return new Assertion(obj);
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}
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/**
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* Constructor
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*
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* @api private
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*/
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function Assertion (obj, flag, parent) {
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this.obj = obj;
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this.flags = {};
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if (undefined != parent) {
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this.flags[flag] = true;
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for (var i in parent.flags) {
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if (parent.flags.hasOwnProperty(i)) {
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this.flags[i] = true;
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}
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}
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}
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var $flags = flag ? flags[flag] : keys(flags)
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, self = this;
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if ($flags) {
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for (var i = 0, l = $flags.length; i < l; i++) {
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// avoid recursion
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if (this.flags[$flags[i]]) continue;
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var name = $flags[i]
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, assertion = new Assertion(this.obj, name, this)
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if ('function' == typeof Assertion.prototype[name]) {
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// clone the function, make sure we dont touch the prot reference
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var old = this[name];
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this[name] = function () {
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return old.apply(self, arguments);
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};
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for (var fn in Assertion.prototype) {
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if (Assertion.prototype.hasOwnProperty(fn) && fn != name) {
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if (typeof this[name] === 'function' && fn === 'length') {
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continue;
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}
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this[name][fn] = bind(assertion[fn], assertion);
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}
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}
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} else {
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this[name] = assertion;
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}
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}
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}
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}
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/**
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* Performs an assertion
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*
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* @api private
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*/
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Assertion.prototype.assert = function (truth, msg, error, expected) {
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var msg = this.flags.not ? error : msg
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, ok = this.flags.not ? !truth : truth
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, err;
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if (!ok) {
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err = new Error(msg.call(this));
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if (this.customMsg) {
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err.message = this.customMsg;
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}
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if (arguments.length > 3) {
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err.actual = this.obj;
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err.expected = expected;
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err.showDiff = true;
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}
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throw err;
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}
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this.and = new Assertion(this.obj);
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};
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/**
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* Check if the value is truthy
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*
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* @api public
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*/
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Assertion.prototype.ok = function () {
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this.assert(
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!!this.obj
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, function(){ return 'expected ' + i(this.obj) + ' to be truthy' }
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, function(){ return 'expected ' + i(this.obj) + ' to be falsy' });
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};
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/**
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* Creates an anonymous function which calls fn with arguments.
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*
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* @api public
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*/
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Assertion.prototype.withArgs = function() {
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expect(this.obj).to.be.a('function');
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var fn = this.obj;
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var args = Array.prototype.slice.call(arguments);
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return expect(function() { fn.apply(null, args); });
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};
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/**
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* Assert that the function throws.
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*
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* @param {Function|RegExp} callback, or regexp to match error string against
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* @api public
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*/
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Assertion.prototype['throw'] =
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Assertion.prototype.throwError =
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Assertion.prototype.throwException = function (fn) {
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expect(this.obj).to.be.a('function');
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var thrown = false
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, not = this.flags.not;
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try {
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this.obj();
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} catch (e) {
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if (isRegExp(fn)) {
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var subject = 'string' == typeof e ? e : e.message;
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if (not) {
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expect(subject).to.not.match(fn);
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} else {
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expect(subject).to.match(fn);
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}
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} else if ('function' == typeof fn) {
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fn(e);
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}
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thrown = true;
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}
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if (isRegExp(fn) && not) {
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// in the presence of a matcher, ensure the `not` only applies to
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// the matching.
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this.flags.not = false;
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}
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var name = this.obj.name || 'fn';
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this.assert(
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thrown
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, function(){ return 'expected ' + name + ' to throw an exception' }
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, function(){ return 'expected ' + name + ' not to throw an exception' });
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};
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/**
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* Checks if the array is empty.
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*
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* @api public
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*/
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Assertion.prototype.empty = function () {
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var expectation;
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if ('object' == typeof this.obj && null !== this.obj && !isArray(this.obj)) {
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if ('number' == typeof this.obj.length) {
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expectation = !this.obj.length;
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} else {
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expectation = !keys(this.obj).length;
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}
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} else {
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if ('string' != typeof this.obj) {
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expect(this.obj).to.be.an('object');
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}
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expect(this.obj).to.have.property('length');
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expectation = !this.obj.length;
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}
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this.assert(
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expectation
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, function(){ return 'expected ' + i(this.obj) + ' to be empty' }
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, function(){ return 'expected ' + i(this.obj) + ' to not be empty' });
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return this;
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};
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/**
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* Checks if the obj exactly equals another.
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*
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* @api public
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*/
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Assertion.prototype.be =
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Assertion.prototype.equal = function (obj, msg) {
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if (typeof(msg) === 'string') {
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this.customMsg = msg;
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}
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this.assert(
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obj === this.obj
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, function(){ return 'expected ' + i(this.obj) + ' to equal ' + i(obj) }
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, function(){ return 'expected ' + i(this.obj) + ' to not equal ' + i(obj) });
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return this;
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};
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/**
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* Checks if the obj sortof equals another.
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*
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* @api public
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*/
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Assertion.prototype.eql = function (obj, msg) {
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if (typeof(msg) === 'string') {
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this.customMsg = msg;
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}
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this.assert(
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expect.eql(this.obj, obj)
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, function(){ return 'expected ' + i(this.obj) + ' to sort of equal ' + i(obj) }
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, function(){ return 'expected ' + i(this.obj) + ' to sort of not equal ' + i(obj) }
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, obj);
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return this;
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};
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/**
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* Assert within start to finish (inclusive).
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*
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* @param {Number} start
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* @param {Number} finish
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* @api public
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*/
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Assertion.prototype.within = function (start, finish, msg) {
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if (typeof(msg) === 'string') {
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this.customMsg = msg;
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}
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var range = start + '..' + finish;
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this.assert(
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this.obj >= start && this.obj <= finish
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, function(){ return 'expected ' + i(this.obj) + ' to be within ' + range }
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, function(){ return 'expected ' + i(this.obj) + ' to not be within ' + range });
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return this;
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};
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/**
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* Assert typeof / instance of
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*
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* @api public
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*/
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Assertion.prototype.a =
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Assertion.prototype.an = function (type) {
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if ('string' == typeof type) {
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// proper english in error msg
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var n = /^[aeiou]/.test(type) ? 'n' : '';
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// typeof with support for 'array'
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this.assert(
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'array' == type ? isArray(this.obj) :
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'regexp' == type ? isRegExp(this.obj) :
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'object' == type
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? 'object' == typeof this.obj && null !== this.obj
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: type == typeof this.obj
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, function(){ return 'expected ' + i(this.obj) + ' to be a' + n + ' ' + type }
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, function(){ return 'expected ' + i(this.obj) + ' not to be a' + n + ' ' + type });
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} else {
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// instanceof
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var name = type.name || 'supplied constructor';
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this.assert(
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this.obj instanceof type
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, function(){ return 'expected ' + i(this.obj) + ' to be an instance of ' + name }
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, function(){ return 'expected ' + i(this.obj) + ' not to be an instance of ' + name });
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}
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return this;
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};
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/**
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* Assert numeric value above _n_.
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*
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* @param {Number} n
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* @api public
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*/
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Assertion.prototype.greaterThan =
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Assertion.prototype.above = function (n, msg) {
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if (typeof(msg) === 'string') {
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this.customMsg = msg;
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}
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this.assert(
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this.obj > n
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, function(){ return 'expected ' + i(this.obj) + ' to be above ' + n }
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, function(){ return 'expected ' + i(this.obj) + ' to be below ' + n });
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return this;
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};
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/**
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* Assert numeric value below _n_.
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*
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* @param {Number} n
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* @api public
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*/
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Assertion.prototype.lessThan =
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Assertion.prototype.below = function (n, msg) {
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if (typeof(msg) === 'string') {
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this.customMsg = msg;
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}
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this.assert(
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this.obj < n
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, function(){ return 'expected ' + i(this.obj) + ' to be below ' + n }
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, function(){ return 'expected ' + i(this.obj) + ' to be above ' + n });
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return this;
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};
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/**
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* Assert string value matches _regexp_.
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*
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* @param {RegExp} regexp
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* @api public
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*/
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Assertion.prototype.match = function (regexp, msg) {
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if (typeof(msg) === 'string') {
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this.customMsg = msg;
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}
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this.assert(
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regexp.exec(this.obj)
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, function(){ return 'expected ' + i(this.obj) + ' to match ' + regexp }
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, function(){ return 'expected ' + i(this.obj) + ' not to match ' + regexp });
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return this;
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};
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/**
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* Assert property "length" exists and has value of _n_.
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*
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* @param {Number} n
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* @api public
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*/
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Assertion.prototype.length = function (n, msg) {
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if (typeof(msg) === 'string') {
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this.customMsg = msg;
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}
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expect(this.obj).to.have.property('length');
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var len = this.obj.length;
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this.assert(
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n == len
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, function(){ return 'expected ' + i(this.obj) + ' to have a length of ' + n + ' but got ' + len }
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, function(){ return 'expected ' + i(this.obj) + ' to not have a length of ' + len });
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return this;
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};
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/**
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* Assert property _name_ exists, with optional _val_.
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*
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* @param {String} name
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* @param {Mixed} val
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* @api public
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*/
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Assertion.prototype.property = function (name, val) {
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if (this.flags.own) {
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this.assert(
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Object.prototype.hasOwnProperty.call(this.obj, name)
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, function(){ return 'expected ' + i(this.obj) + ' to have own property ' + i(name) }
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, function(){ return 'expected ' + i(this.obj) + ' to not have own property ' + i(name) });
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return this;
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}
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if (this.flags.not && undefined !== val) {
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if (undefined === this.obj[name]) {
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throw new Error(i(this.obj) + ' has no property ' + i(name));
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}
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} else {
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var hasProp;
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try {
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hasProp = name in this.obj
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} catch (e) {
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hasProp = undefined !== this.obj[name]
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}
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this.assert(
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hasProp
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, function(){ return 'expected ' + i(this.obj) + ' to have a property ' + i(name) }
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, function(){ return 'expected ' + i(this.obj) + ' to not have a property ' + i(name) });
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}
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if (undefined !== val) {
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this.assert(
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val === this.obj[name]
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, function(){ return 'expected ' + i(this.obj) + ' to have a property ' + i(name)
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+ ' of ' + i(val) + ', but got ' + i(this.obj[name]) }
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, function(){ return 'expected ' + i(this.obj) + ' to not have a property ' + i(name)
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+ ' of ' + i(val) });
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}
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this.obj = this.obj[name];
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return this;
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};
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/**
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* Assert that the array contains _obj_ or string contains _obj_.
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*
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* @param {Mixed} obj|string
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* @api public
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*/
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Assertion.prototype.string =
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Assertion.prototype.contain = function (obj, msg) {
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if (typeof(msg) === 'string') {
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this.customMsg = msg;
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}
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if ('string' == typeof this.obj) {
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this.assert(
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~this.obj.indexOf(obj)
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, function(){ return 'expected ' + i(this.obj) + ' to contain ' + i(obj) }
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, function(){ return 'expected ' + i(this.obj) + ' to not contain ' + i(obj) });
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} else {
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this.assert(
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~indexOf(this.obj, obj)
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, function(){ return 'expected ' + i(this.obj) + ' to contain ' + i(obj) }
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, function(){ return 'expected ' + i(this.obj) + ' to not contain ' + i(obj) });
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}
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return this;
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};
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/**
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* Assert exact keys or inclusion of keys by using
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* the `.own` modifier.
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*
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* @param {Array|String ...} keys
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* @api public
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*/
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Assertion.prototype.key =
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Assertion.prototype.keys = function ($keys) {
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var str
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, ok = true;
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$keys = isArray($keys)
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? $keys
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: Array.prototype.slice.call(arguments);
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if (!$keys.length) throw new Error('keys required');
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var actual = keys(this.obj)
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, len = $keys.length;
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// Inclusion
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ok = every($keys, function (key) {
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return ~indexOf(actual, key);
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});
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// Strict
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if (!this.flags.not && this.flags.only) {
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ok = ok && $keys.length == actual.length;
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}
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// Key string
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if (len > 1) {
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$keys = map($keys, function (key) {
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return i(key);
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});
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var last = $keys.pop();
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str = $keys.join(', ') + ', and ' + last;
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} else {
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str = i($keys[0]);
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}
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// Form
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str = (len > 1 ? 'keys ' : 'key ') + str;
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// Have / include
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str = (!this.flags.only ? 'include ' : 'only have ') + str;
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// Assertion
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this.assert(
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ok
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, function(){ return 'expected ' + i(this.obj) + ' to ' + str }
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, function(){ return 'expected ' + i(this.obj) + ' to not ' + str });
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return this;
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};
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/**
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* Assert a failure.
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*
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* @param {String ...} custom message
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* @api public
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*/
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Assertion.prototype.fail = function (msg) {
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var error = function() { return msg || "explicit failure"; }
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this.assert(false, error, error);
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return this;
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};
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/**
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* Function bind implementation.
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*/
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function bind (fn, scope) {
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return function () {
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return fn.apply(scope, arguments);
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}
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}
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/**
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* Array every compatibility
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*
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* @see bit.ly/5Fq1N2
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* @api public
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*/
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function every (arr, fn, thisObj) {
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var scope = thisObj || global;
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for (var i = 0, j = arr.length; i < j; ++i) {
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if (!fn.call(scope, arr[i], i, arr)) {
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return false;
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}
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}
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return true;
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}
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/**
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* Array indexOf compatibility.
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*
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* @see bit.ly/a5Dxa2
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* @api public
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*/
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function indexOf (arr, o, i) {
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if (Array.prototype.indexOf) {
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return Array.prototype.indexOf.call(arr, o, i);
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}
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if (arr.length === undefined) {
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return -1;
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}
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for (var j = arr.length, i = i < 0 ? i + j < 0 ? 0 : i + j : i || 0
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; i < j && arr[i] !== o; i++);
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return j <= i ? -1 : i;
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}
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// https://gist.github.com/1044128/
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var getOuterHTML = function(element) {
|
|
if ('outerHTML' in element) return element.outerHTML;
|
|
var ns = "http://www.w3.org/1999/xhtml";
|
|
var container = document.createElementNS(ns, '_');
|
|
var xmlSerializer = new XMLSerializer();
|
|
var html;
|
|
if (document.xmlVersion) {
|
|
return xmlSerializer.serializeToString(element);
|
|
} else {
|
|
container.appendChild(element.cloneNode(false));
|
|
html = container.innerHTML.replace('><', '>' + element.innerHTML + '<');
|
|
container.innerHTML = '';
|
|
return html;
|
|
}
|
|
};
|
|
|
|
// Returns true if object is a DOM element.
|
|
var isDOMElement = function (object) {
|
|
if (typeof HTMLElement === 'object') {
|
|
return object instanceof HTMLElement;
|
|
} else {
|
|
return object &&
|
|
typeof object === 'object' &&
|
|
object.nodeType === 1 &&
|
|
typeof object.nodeName === 'string';
|
|
}
|
|
};
|
|
|
|
/**
|
|
* Inspects an object.
|
|
*
|
|
* @see taken from node.js `util` module (copyright Joyent, MIT license)
|
|
* @api private
|
|
*/
|
|
|
|
function i (obj, showHidden, depth) {
|
|
var seen = [];
|
|
|
|
function stylize (str) {
|
|
return str;
|
|
}
|
|
|
|
function format (value, recurseTimes) {
|
|
// Provide a hook for user-specified inspect functions.
|
|
// Check that value is an object with an inspect function on it
|
|
if (value && typeof value.inspect === 'function' &&
|
|
// Filter out the util module, it's inspect function is special
|
|
value !== exports &&
|
|
// Also filter out any prototype objects using the circular check.
|
|
!(value.constructor && value.constructor.prototype === value)) {
|
|
return value.inspect(recurseTimes);
|
|
}
|
|
|
|
// Primitive types cannot have properties
|
|
switch (typeof value) {
|
|
case 'undefined':
|
|
return stylize('undefined', 'undefined');
|
|
|
|
case 'string':
|
|
var simple = '\'' + JSON.stringify(value).replace(/^"|"$/g, '')
|
|
.replace(/'/g, "\\'")
|
|
.replace(/\\"/g, '"') + '\'';
|
|
return stylize(simple, 'string');
|
|
|
|
case 'number':
|
|
return stylize('' + value, 'number');
|
|
|
|
case 'boolean':
|
|
return stylize('' + value, 'boolean');
|
|
}
|
|
// For some reason typeof null is "object", so special case here.
|
|
if (value === null) {
|
|
return stylize('null', 'null');
|
|
}
|
|
|
|
if (isDOMElement(value)) {
|
|
return getOuterHTML(value);
|
|
}
|
|
|
|
// Look up the keys of the object.
|
|
var visible_keys = keys(value);
|
|
var $keys = showHidden ? Object.getOwnPropertyNames(value) : visible_keys;
|
|
|
|
// Functions without properties can be shortcutted.
|
|
if (typeof value === 'function' && $keys.length === 0) {
|
|
if (isRegExp(value)) {
|
|
return stylize('' + value, 'regexp');
|
|
} else {
|
|
var name = value.name ? ': ' + value.name : '';
|
|
return stylize('[Function' + name + ']', 'special');
|
|
}
|
|
}
|
|
|
|
// Dates without properties can be shortcutted
|
|
if (isDate(value) && $keys.length === 0) {
|
|
return stylize(value.toUTCString(), 'date');
|
|
}
|
|
|
|
// Error objects can be shortcutted
|
|
if (value instanceof Error) {
|
|
return stylize("["+value.toString()+"]", 'Error');
|
|
}
|
|
|
|
var base, type, braces;
|
|
// Determine the object type
|
|
if (isArray(value)) {
|
|
type = 'Array';
|
|
braces = ['[', ']'];
|
|
} else {
|
|
type = 'Object';
|
|
braces = ['{', '}'];
|
|
}
|
|
|
|
// Make functions say that they are functions
|
|
if (typeof value === 'function') {
|
|
var n = value.name ? ': ' + value.name : '';
|
|
base = (isRegExp(value)) ? ' ' + value : ' [Function' + n + ']';
|
|
} else {
|
|
base = '';
|
|
}
|
|
|
|
// Make dates with properties first say the date
|
|
if (isDate(value)) {
|
|
base = ' ' + value.toUTCString();
|
|
}
|
|
|
|
if ($keys.length === 0) {
|
|
return braces[0] + base + braces[1];
|
|
}
|
|
|
|
if (recurseTimes < 0) {
|
|
if (isRegExp(value)) {
|
|
return stylize('' + value, 'regexp');
|
|
} else {
|
|
return stylize('[Object]', 'special');
|
|
}
|
|
}
|
|
|
|
seen.push(value);
|
|
|
|
var output = map($keys, function (key) {
|
|
var name, str;
|
|
if (value.__lookupGetter__) {
|
|
if (value.__lookupGetter__(key)) {
|
|
if (value.__lookupSetter__(key)) {
|
|
str = stylize('[Getter/Setter]', 'special');
|
|
} else {
|
|
str = stylize('[Getter]', 'special');
|
|
}
|
|
} else {
|
|
if (value.__lookupSetter__(key)) {
|
|
str = stylize('[Setter]', 'special');
|
|
}
|
|
}
|
|
}
|
|
if (indexOf(visible_keys, key) < 0) {
|
|
name = '[' + key + ']';
|
|
}
|
|
if (!str) {
|
|
if (indexOf(seen, value[key]) < 0) {
|
|
if (recurseTimes === null) {
|
|
str = format(value[key]);
|
|
} else {
|
|
str = format(value[key], recurseTimes - 1);
|
|
}
|
|
if (str.indexOf('\n') > -1) {
|
|
if (isArray(value)) {
|
|
str = map(str.split('\n'), function (line) {
|
|
return ' ' + line;
|
|
}).join('\n').substr(2);
|
|
} else {
|
|
str = '\n' + map(str.split('\n'), function (line) {
|
|
return ' ' + line;
|
|
}).join('\n');
|
|
}
|
|
}
|
|
} else {
|
|
str = stylize('[Circular]', 'special');
|
|
}
|
|
}
|
|
if (typeof name === 'undefined') {
|
|
if (type === 'Array' && key.match(/^\d+$/)) {
|
|
return str;
|
|
}
|
|
name = JSON.stringify('' + key);
|
|
if (name.match(/^"([a-zA-Z_][a-zA-Z_0-9]*)"$/)) {
|
|
name = name.substr(1, name.length - 2);
|
|
name = stylize(name, 'name');
|
|
} else {
|
|
name = name.replace(/'/g, "\\'")
|
|
.replace(/\\"/g, '"')
|
|
.replace(/(^"|"$)/g, "'");
|
|
name = stylize(name, 'string');
|
|
}
|
|
}
|
|
|
|
return name + ': ' + str;
|
|
});
|
|
|
|
seen.pop();
|
|
|
|
var numLinesEst = 0;
|
|
var length = reduce(output, function (prev, cur) {
|
|
numLinesEst++;
|
|
if (indexOf(cur, '\n') >= 0) numLinesEst++;
|
|
return prev + cur.length + 1;
|
|
}, 0);
|
|
|
|
if (length > 50) {
|
|
output = braces[0] +
|
|
(base === '' ? '' : base + '\n ') +
|
|
' ' +
|
|
output.join(',\n ') +
|
|
' ' +
|
|
braces[1];
|
|
|
|
} else {
|
|
output = braces[0] + base + ' ' + output.join(', ') + ' ' + braces[1];
|
|
}
|
|
|
|
return output;
|
|
}
|
|
return format(obj, (typeof depth === 'undefined' ? 2 : depth));
|
|
}
|
|
|
|
expect.stringify = i;
|
|
|
|
function isArray (ar) {
|
|
return Object.prototype.toString.call(ar) === '[object Array]';
|
|
}
|
|
|
|
function isRegExp(re) {
|
|
var s;
|
|
try {
|
|
s = '' + re;
|
|
} catch (e) {
|
|
return false;
|
|
}
|
|
|
|
return re instanceof RegExp || // easy case
|
|
// duck-type for context-switching evalcx case
|
|
typeof(re) === 'function' &&
|
|
re.constructor.name === 'RegExp' &&
|
|
re.compile &&
|
|
re.test &&
|
|
re.exec &&
|
|
s.match(/^\/.*\/[gim]{0,3}$/);
|
|
}
|
|
|
|
function isDate(d) {
|
|
return d instanceof Date;
|
|
}
|
|
|
|
function keys (obj) {
|
|
if (Object.keys) {
|
|
return Object.keys(obj);
|
|
}
|
|
|
|
var keys = [];
|
|
|
|
for (var i in obj) {
|
|
if (Object.prototype.hasOwnProperty.call(obj, i)) {
|
|
keys.push(i);
|
|
}
|
|
}
|
|
|
|
return keys;
|
|
}
|
|
|
|
function map (arr, mapper, that) {
|
|
if (Array.prototype.map) {
|
|
return Array.prototype.map.call(arr, mapper, that);
|
|
}
|
|
|
|
var other= new Array(arr.length);
|
|
|
|
for (var i= 0, n = arr.length; i<n; i++)
|
|
if (i in arr)
|
|
other[i] = mapper.call(that, arr[i], i, arr);
|
|
|
|
return other;
|
|
}
|
|
|
|
function reduce (arr, fun) {
|
|
if (Array.prototype.reduce) {
|
|
return Array.prototype.reduce.apply(
|
|
arr
|
|
, Array.prototype.slice.call(arguments, 1)
|
|
);
|
|
}
|
|
|
|
var len = +this.length;
|
|
|
|
if (typeof fun !== "function")
|
|
throw new TypeError();
|
|
|
|
// no value to return if no initial value and an empty array
|
|
if (len === 0 && arguments.length === 1)
|
|
throw new TypeError();
|
|
|
|
var i = 0;
|
|
if (arguments.length >= 2) {
|
|
var rv = arguments[1];
|
|
} else {
|
|
do {
|
|
if (i in this) {
|
|
rv = this[i++];
|
|
break;
|
|
}
|
|
|
|
// if array contains no values, no initial value to return
|
|
if (++i >= len)
|
|
throw new TypeError();
|
|
} while (true);
|
|
}
|
|
|
|
for (; i < len; i++) {
|
|
if (i in this)
|
|
rv = fun.call(null, rv, this[i], i, this);
|
|
}
|
|
|
|
return rv;
|
|
}
|
|
|
|
/**
|
|
* Asserts deep equality
|
|
*
|
|
* @see taken from node.js `assert` module (copyright Joyent, MIT license)
|
|
* @api private
|
|
*/
|
|
|
|
expect.eql = function eql(actual, expected) {
|
|
// 7.1. All identical values are equivalent, as determined by ===.
|
|
if (actual === expected) {
|
|
return true;
|
|
} else if ('undefined' != typeof Buffer
|
|
&& Buffer.isBuffer(actual) && Buffer.isBuffer(expected)) {
|
|
if (actual.length != expected.length) return false;
|
|
|
|
for (var i = 0; i < actual.length; i++) {
|
|
if (actual[i] !== expected[i]) return false;
|
|
}
|
|
|
|
return true;
|
|
|
|
// 7.2. If the expected value is a Date object, the actual value is
|
|
// equivalent if it is also a Date object that refers to the same time.
|
|
} else if (actual instanceof Date && expected instanceof Date) {
|
|
return actual.getTime() === expected.getTime();
|
|
|
|
// 7.3. Other pairs that do not both pass typeof value == "object",
|
|
// equivalence is determined by ==.
|
|
} else if (typeof actual != 'object' && typeof expected != 'object') {
|
|
return actual == expected;
|
|
// If both are regular expression use the special `regExpEquiv` method
|
|
// to determine equivalence.
|
|
} else if (isRegExp(actual) && isRegExp(expected)) {
|
|
return regExpEquiv(actual, expected);
|
|
// 7.4. For all other Object pairs, including Array objects, equivalence is
|
|
// determined by having the same number of owned properties (as verified
|
|
// with Object.prototype.hasOwnProperty.call), the same set of keys
|
|
// (although not necessarily the same order), equivalent values for every
|
|
// corresponding key, and an identical "prototype" property. Note: this
|
|
// accounts for both named and indexed properties on Arrays.
|
|
} else {
|
|
return objEquiv(actual, expected);
|
|
}
|
|
};
|
|
|
|
function isUndefinedOrNull (value) {
|
|
return value === null || value === undefined;
|
|
}
|
|
|
|
function isArguments (object) {
|
|
return Object.prototype.toString.call(object) == '[object Arguments]';
|
|
}
|
|
|
|
function regExpEquiv (a, b) {
|
|
return a.source === b.source && a.global === b.global &&
|
|
a.ignoreCase === b.ignoreCase && a.multiline === b.multiline;
|
|
}
|
|
|
|
function objEquiv (a, b) {
|
|
if (isUndefinedOrNull(a) || isUndefinedOrNull(b))
|
|
return false;
|
|
// an identical "prototype" property.
|
|
if (a.prototype !== b.prototype) return false;
|
|
//~~~I've managed to break Object.keys through screwy arguments passing.
|
|
// Converting to array solves the problem.
|
|
if (isArguments(a)) {
|
|
if (!isArguments(b)) {
|
|
return false;
|
|
}
|
|
a = pSlice.call(a);
|
|
b = pSlice.call(b);
|
|
return expect.eql(a, b);
|
|
}
|
|
try{
|
|
var ka = keys(a),
|
|
kb = keys(b),
|
|
key, i;
|
|
} catch (e) {//happens when one is a string literal and the other isn't
|
|
return false;
|
|
}
|
|
// having the same number of owned properties (keys incorporates hasOwnProperty)
|
|
if (ka.length != kb.length)
|
|
return false;
|
|
//the same set of keys (although not necessarily the same order),
|
|
ka.sort();
|
|
kb.sort();
|
|
//~~~cheap key test
|
|
for (i = ka.length - 1; i >= 0; i--) {
|
|
if (ka[i] != kb[i])
|
|
return false;
|
|
}
|
|
//equivalent values for every corresponding key, and
|
|
//~~~possibly expensive deep test
|
|
for (i = ka.length - 1; i >= 0; i--) {
|
|
key = ka[i];
|
|
if (!expect.eql(a[key], b[key]))
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|