mirror of
https://github.com/socketio/socket.io.git
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894 lines
22 KiB
JavaScript
894 lines
22 KiB
JavaScript
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/**
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* should.js by TJ Holowaychuk (MIT), adapted to run in browser and node.
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*/
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(function (should) {
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if ('undefined' != typeof exports) {
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exports = module.exports = should = require('assert');
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}
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/**
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* Expose constructor.
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*/
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should.Assertion = Assertion;
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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: ['be', 'have', 'include']
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, an: ['instance']
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, and: ['be', 'have', 'include', 'an']
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, be: ['an']
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, have: ['an', 'own']
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, include: ['an']
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, not: ['include', 'have', 'be']
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, own: []
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, instance: []
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};
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/**
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* Extend Object.prototype.
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*/
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if (Object.defineProperty) {
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Object.defineProperty(
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Object.prototype
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, 'should'
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, {
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get: function () {
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var self = this.valueOf()
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, fn = function () {
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return new Assertion(self);
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};
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if ('undefined' != typeof exports) {
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fn.__proto__ = exports;
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}
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return fn;
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}
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, enumerable: false
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}
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);
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} else {
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Object.prototype.should = function () {
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return new Assertion(this.valueOf());
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};
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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) {
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if (obj !== undefined) {
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this.obj = obj;
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this.flags = {};
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var $flags = keys(flags);
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for (var i = 0, l = $flags.length; i < l; i++) {
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this[$flags[i]] = new FlaggedAssertion(this, $flags[i]);
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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) {
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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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if (!ok) {
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throw new Error(msg);
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}
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this.flags = {};
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};
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/**
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* Checks if the value is true
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*
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* @api public
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*/
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Assertion.prototype.be_true = function () {
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this.assert(
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this.obj === true
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, 'expected ' + i(this.obj) + ' to be true'
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, 'expected ' + i(this.obj) + ' to not be true');
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return this;
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};
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/**
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* Checks if the value is true
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*
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* @api public
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*/
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Assertion.prototype.be_false = function () {
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this.assert(
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this.obj === false
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, 'expected ' + i(this.obj) + ' to be false'
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, 'expected ' + i(this.obj) + ' to not be false'
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);
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return this;
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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 == true
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, 'expected ' + i(this.obj) + ' to be true'
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, 'expected ' + i(this.obj) + ' to not be true');
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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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this.obj.should().have.property('length');
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this.assert(
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0 === this.obj.length
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, 'expected ' + i(this.obj) + ' to be empty'
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, '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 is arguments.
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*
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* @api public
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*/
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Assertion.prototype.arguments = function () {
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this.assert(
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'[object Arguments]' == Object.prototype.toString.call(this.obj)
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, 'expected ' + i(this.obj) + ' to be arguments'
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, 'expected ' + i(this.obj) + ' to not be arguments');
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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.equal = function (obj) {
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this.assert(
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obj === this.obj
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, 'expected ' + i(this.obj) + ' to equal ' + i(obj)
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, '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) {
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this.assert(
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should.eql(obj, this.obj)
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, 'expected ' + i(this.obj) + ' to sort of equal ' + i(obj)
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, 'expected ' + i(this.obj) + ' to sort of not equal ' + i(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) {
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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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, 'expected ' + i(this.obj) + ' to be within ' + range
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, '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.
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*
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* @api public
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*/
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Assertion.prototype.a = function (type) {
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this.assert(
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type == typeof this.obj
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, 'expected ' + i(this.obj) + ' to be a ' + type
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, 'expected ' + i(this.obj) + ' not to be a ' + type);
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return this;
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};
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/**
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* Assert instanceof.
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*
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* @api public
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*/
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Assertion.prototype.of = function (constructor) {
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var name = constructor.name;
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this.assert(
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this.obj instanceof constructor
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, 'expected ' + i(this.obj) + ' to be an instance of ' + name
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, 'expected ' + i(this.obj) + ' not to be an instance of ' + name);
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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) {
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this.assert(
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this.obj > n
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, 'expected ' + i(this.obj) + ' to be above ' + n
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, '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) {
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this.assert(
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this.obj < n
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, 'expected ' + i(this.obj) + ' to be below ' + n
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, '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) {
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this.assert(
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regexp.exec(this.obj)
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, 'expected ' + i(this.obj) + ' to match ' + regexp
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, '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) {
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this.obj.should().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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, 'expected ' + i(this.obj) + ' to have a length of ' + n + ' but got ' + len
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, '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 substring.
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*
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* @param {String} str
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* @api public
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*/
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Assertion.prototype.string = function(str){
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this.obj.should().be.a('string');
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this.assert(
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~this.obj.indexOf(str)
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, 'expected ' + i(this.obj) + ' to include ' + i(str)
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, 'expected ' + i(this.obj) + ' to not include ' + i(str));
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return this;
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};
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/**
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* Assert inclusion of object.
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*
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* @param {Object} obj
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* @api public
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*/
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Assertion.prototype.object = function(obj){
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this.obj.should().be.a('object');
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var included = true;
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for (var key in obj) {
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if (obj.hasOwnProperty(key) && !should.eql(obj[key], this.obj[key])) {
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included = false;
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break;
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}
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}
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this.assert(
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included
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, 'expected ' + i(this.obj) + ' to include ' + i(obj)
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, 'expected ' + i(this.obj) + ' to not include ' + i(obj));
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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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this.obj.hasOwnProperty(name)
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, 'expected ' + i(this.obj) + ' to have own property ' + i(name)
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, '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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this.assert(
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undefined !== this.obj[name]
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, 'expected ' + i(this.obj) + ' to have a property ' + i(name)
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, '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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, '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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, '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_.
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*
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* @param {Mixed} obj
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* @api public
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*/
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Assertion.prototype.contain = function (obj) {
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this.obj.should.be.an.instance.of(Array);
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this.assert(
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~this.obj.indexOf(obj)
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, 'expected ' + i(this.obj) + ' to contain ' + i(obj)
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, 'expected ' + i(this.obj) + ' to not contain ' + i(obj));
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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 `.include` 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 = keys instanceof Array
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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 = keys.every(function(key){
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return ~actual.indexOf(key);
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});
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// Strict
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if (!this.flags.not && !this.flags.include) {
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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.flag.include ? 'include ' : 'have ') + str;
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// Assertion
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this.assert(
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ok
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, 'expected ' + i(this.obj) + ' to ' + str
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, '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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* Assertion with a flag.
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*
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* @api private
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*/
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function FlaggedAssertion (parent, flag) {
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this.parent = parent;
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this.obj = parent.obj;
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this.flag = flag;
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this.flags = {};
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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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var $flags = flags[flag];
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for (var i = 0, l = $flags.length; i < l; i++) {
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this[$flags[i]] = new FlaggedAssertion(this, $flags[i]);
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}
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};
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/**
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* Inherits from assertion
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*/
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FlaggedAssertion.prototype = new Assertion;
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/**
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* Inspects an object.
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*
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* @see taken from node.js `util` module (copyright Joyent, MIT license)
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* @api private
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*/
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function i (obj, showHidden, depth) {
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var seen = [];
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function stylize (str) {
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return str;
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};
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function format (value, recurseTimes) {
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// Provide a hook for user-specified inspect functions.
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// Check that value is an object with an inspect function on it
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if (value && typeof value.inspect === 'function' &&
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// Filter out the util module, it's inspect function is special
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value !== exports &&
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// Also filter out any prototype objects using the circular check.
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!(value.constructor && value.constructor.prototype === value)) {
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return value.inspect(recurseTimes);
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}
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// Primitive types cannot have properties
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switch (typeof value) {
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case 'undefined':
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return stylize('undefined', 'undefined');
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case 'string':
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var simple = '\'' + JSON.stringify(value).replace(/^"|"$/g, '')
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.replace(/'/g, "\\'")
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.replace(/\\"/g, '"') + '\'';
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return stylize(simple, 'string');
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case 'number':
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return stylize('' + value, 'number');
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case 'boolean':
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return stylize('' + value, 'boolean');
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}
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// For some reason typeof null is "object", so special case here.
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if (value === null) {
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return stylize('null', 'null');
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}
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// Look up the keys of the object.
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var visible_keys = keys(value);
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var $keys = showHidden ? Object.getOwnPropertyNames(value) : visible_keys;
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// Functions without properties can be shortcutted.
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if (typeof value === 'function' && $keys.length === 0) {
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if (isRegExp(value)) {
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return stylize('' + value, 'regexp');
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} else {
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var name = value.name ? ': ' + value.name : '';
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return stylize('[Function' + name + ']', 'special');
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}
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}
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// Dates without properties can be shortcutted
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if (isDate(value) && keys.length === 0) {
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return stylize(value.toUTCString(), 'date');
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}
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var base, type, braces;
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// Determine the object type
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if (isArray(value)) {
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type = 'Array';
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braces = ['[', ']'];
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} else {
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type = 'Object';
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braces = ['{', '}'];
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}
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// Make functions say that they are functions
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if (typeof value === 'function') {
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var n = value.name ? ': ' + value.name : '';
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base = (isRegExp(value)) ? ' ' + value : ' [Function' + n + ']';
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} else {
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base = '';
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}
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// Make dates with properties first say the date
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if (isDate(value)) {
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base = ' ' + value.toUTCString();
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}
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if (keys.length === 0) {
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return braces[0] + base + braces[1];
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}
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if (recurseTimes < 0) {
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if (isRegExp(value)) {
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return stylize('' + value, 'regexp');
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} else {
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return stylize('[Object]', 'special');
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}
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}
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|
|
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 (visible_keys.indexOf(key) < 0) {
|
|
name = '[' + key + ']';
|
|
}
|
|
if (!str) {
|
|
if (seen.indexOf(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 (cur.indexOf('\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));
|
|
};
|
|
|
|
function isArray (ar) {
|
|
return ar instanceof Array ||
|
|
Object.prototype.toString.call(ar) == '[object Array]';
|
|
};
|
|
|
|
function isRegExp(re) {
|
|
var s = '' + re;
|
|
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) {
|
|
if (d instanceof Date) return true;
|
|
return false;
|
|
};
|
|
|
|
function keys (obj) {
|
|
if (Object.keys) {
|
|
return Object.keys(obj);
|
|
}
|
|
|
|
var keys = [];
|
|
|
|
for (var i in keys) {
|
|
if (keys.hasOwnProperty(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;
|
|
};
|
|
|
|
/**
|
|
* Strict equality
|
|
*
|
|
* @api public
|
|
*/
|
|
|
|
should.equal = function (a, b) {
|
|
if (a !== b) {
|
|
should.fail('expected ' + i(a) + ' to equal ' + i(b));
|
|
}
|
|
};
|
|
|
|
/**
|
|
* Fails with msg
|
|
*
|
|
* @param {String} msg
|
|
* @api public
|
|
*/
|
|
|
|
should.fail = function (msg) {
|
|
throw new Error(msg);
|
|
};
|
|
|
|
/**
|
|
* Asserts deep equality
|
|
*
|
|
* @see taken from node.js `assert` module (copyright Joyent, MIT license)
|
|
* @api private
|
|
*/
|
|
|
|
should.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;
|
|
|
|
// 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 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 should.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 (!should.eql(a[key], b[key]))
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
})('undefined' != typeof exports ? exports : (should = {}));
|