mirror of
https://github.com/seejohnrun/haste-server.git
synced 2024-11-01 11:31:22 +00:00
693 lines
15 KiB
JavaScript
693 lines
15 KiB
JavaScript
/*!
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* Should
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* Copyright(c) 2010 TJ Holowaychuk <tj@vision-media.ca>
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* MIT Licensed
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*/
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/**
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* Module dependencies.
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*/
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var util = require('util')
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, http = require('http')
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, assert = require('assert')
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, AssertionError = assert.AssertionError
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, statusCodes = http.STATUS_CODES
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, eql = require('./eql')
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, i = util.inspect;
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/**
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* Expose assert as should.
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*
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* This allows you to do things like below
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* without require()ing the assert module.
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*
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* should.equal(foo.bar, undefined);
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*
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*/
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exports = module.exports = assert;
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/**
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* Library version.
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*/
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exports.version = '0.5.1';
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/**
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* Assert _obj_ exists, with optional message.
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*
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* @param {Mixed} obj
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* @param {String} msg
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* @api public
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*/
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exports.exist = function(obj, msg){
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if (null == obj) {
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throw new AssertionError({
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message: msg || ('expected ' + i(obj) + ' to exist')
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, stackStartFunction: should.exist
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});
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}
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};
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/**
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* Asserts _obj_ does not exist, with optional message.
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*
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* @param {Mixed} obj
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* @param {String} msg
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* @api public
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*/
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exports.not = {};
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exports.not.exist = function(obj, msg){
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if (null != obj) {
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throw new AssertionError({
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message: msg || ('expected ' + i(obj) + ' to not exist')
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, stackStartFunction: should.not.exist
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});
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}
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};
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/**
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* Expose api via `Object#should`.
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*
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* @api public
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*/
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Object.defineProperty(Object.prototype, 'should', {
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set: function(){},
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get: function(){
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return new Assertion(this);
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},
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configurable: true
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});
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/**
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* Initialize a new `Assertion` with the given _obj_.
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*
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* @param {Mixed} obj
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* @api private
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*/
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var Assertion = exports.Assertion = function Assertion(obj) {
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this.obj = obj;
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};
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/**
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* Prototype.
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*/
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Assertion.prototype = {
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/**
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* HACK: prevents double require() from failing.
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*/
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exports: exports,
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/**
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* Assert _expr_ with the given _msg_ and _negatedMsg_.
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*
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* @param {Boolean} expr
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* @param {String} msg
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* @param {String} negatedMsg
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* @api private
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*/
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assert: function(expr, msg, negatedMsg){
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var msg = this.negate ? negatedMsg : msg
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, ok = this.negate ? !expr : expr;
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if (!ok) {
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throw new AssertionError({
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message: msg
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, stackStartFunction: this.assert
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});
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}
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},
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/**
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* Dummy getter.
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*
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* @api public
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*/
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get an() {
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return this;
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},
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/**
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* Dummy getter.
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*
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* @api public
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*/
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get and() {
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return this;
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},
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/**
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* Dummy getter.
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*
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* @api public
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*/
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get be() {
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return this;
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},
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/**
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* Dummy getter.
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*
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* @api public
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*/
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get have() {
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return this;
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},
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/**
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* Dummy getter.
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*
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* @api public
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*/
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get with() {
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return this;
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},
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/**
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* Negation modifier.
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*
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* @api public
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*/
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get not() {
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this.negate = true;
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return this;
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},
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/**
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* Get object inspection string.
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*
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* @return {String}
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* @api private
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*/
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get inspect() {
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return i(this.obj);
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},
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/**
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* Assert instanceof `Arguments`.
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*
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* @api public
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*/
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get arguments() {
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this.assert(
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'[object Arguments]' == Object.prototype.toString.call(this.obj)
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, 'expected ' + this.inspect + ' to be arguments'
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, 'expected ' + this.inspect + ' to not be arguments');
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return this;
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},
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/**
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* Assert that an object is empty aka length of 0.
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*
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* @api public
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*/
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get empty() {
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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 ' + this.inspect + ' to be empty'
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, 'expected ' + this.inspect + ' not to be empty');
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return this;
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},
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/**
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* Assert ok.
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*
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* @api public
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*/
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get ok() {
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this.assert(
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this.obj
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, 'expected ' + this.inspect + ' to be truthy'
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, 'expected ' + this.inspect + ' to be falsey');
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return this;
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},
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/**
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* Assert true.
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*
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* @api public
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*/
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get true() {
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this.assert(
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true === this.obj
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, 'expected ' + this.inspect + ' to be true'
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, 'expected ' + this.inspect + ' not to be true');
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return this;
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},
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/**
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* Assert false.
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*
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* @api public
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*/
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get false() {
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this.assert(
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false === this.obj
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, 'expected ' + this.inspect + ' to be false'
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, 'expected ' + this.inspect + ' not to be false');
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return this;
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},
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/**
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* Assert equal.
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*
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* @param {Mixed} val
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* @param {String} description
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* @api public
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*/
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eql: function(val, desc){
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this.assert(
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eql(val, this.obj)
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, 'expected ' + this.inspect + ' to equal ' + i(val) + (desc ? " | " + desc : "")
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, 'expected ' + this.inspect + ' to not equal ' + i(val) + (desc ? " | " + desc : ""));
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return this;
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},
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/**
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* Assert strict equal.
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*
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* @param {Mixed} val
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* @param {String} description
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* @api public
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*/
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equal: function(val, desc){
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this.assert(
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val === this.obj
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, 'expected ' + this.inspect + ' to equal ' + i(val) + (desc ? " | " + desc : "")
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, 'expected ' + this.inspect + ' to not equal ' + i(val) + (desc ? " | " + desc : ""));
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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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* @param {String} description
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* @api public
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*/
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within: function(start, finish, desc){
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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 ' + this.inspect + ' to be within ' + range + (desc ? " | " + desc : "")
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, 'expected ' + this.inspect + ' to not be within ' + range + (desc ? " | " + desc : ""));
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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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* @param {Mixed} type
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* @param {String} description
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* @api public
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*/
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a: function(type, desc){
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this.assert(
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type == typeof this.obj
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, 'expected ' + this.inspect + ' to be a ' + type + (desc ? " | " + desc : "")
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, 'expected ' + this.inspect + ' not to be a ' + type + (desc ? " | " + desc : ""));
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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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* @param {Function} constructor
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* @param {String} description
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* @api public
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*/
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instanceof: function(constructor, desc){
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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 ' + this.inspect + ' to be an instance of ' + name + (desc ? " | " + desc : "")
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, 'expected ' + this.inspect + ' not to be an instance of ' + name + (desc ? " | " + desc : ""));
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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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* @param {String} description
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* @api public
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*/
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above: function(n, desc){
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this.assert(
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this.obj > n
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, 'expected ' + this.inspect + ' to be above ' + n + (desc ? " | " + desc : "")
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, 'expected ' + this.inspect + ' to be below ' + n + (desc ? " | " + desc : ""));
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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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* @param {String} description
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* @api public
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*/
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below: function(n, desc){
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this.assert(
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this.obj < n
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, 'expected ' + this.inspect + ' to be below ' + n + (desc ? " | " + desc : "")
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, 'expected ' + this.inspect + ' to be above ' + n + (desc ? " | " + desc : ""));
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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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* @param {String} description
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* @api public
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*/
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match: function(regexp, desc){
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this.assert(
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regexp.exec(this.obj)
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, 'expected ' + this.inspect + ' to match ' + regexp + (desc ? " | " + desc : "")
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, 'expected ' + this.inspect + ' not to match ' + regexp + (desc ? " | " + desc : ""));
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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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* @param {String} description
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* @api public
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*/
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length: function(n, desc){
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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 ' + this.inspect + ' to have a length of ' + n + ' but got ' + len + (desc ? " | " + desc : "")
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, 'expected ' + this.inspect + ' to not have a length of ' + len + (desc ? " | " + desc : ""));
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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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* @param {String} description
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* @api public
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*/
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property: function(name, val, desc){
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if (this.negate && undefined !== val) {
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if (undefined === this.obj[name]) {
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throw new Error(this.inspect + ' has no property ' + i(name) + (desc ? " | " + desc : ""));
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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 ' + this.inspect + ' to have a property ' + i(name) + (desc ? " | " + desc : "")
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, 'expected ' + this.inspect + ' to not have a property ' + i(name) + (desc ? " | " + desc : ""));
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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 ' + this.inspect + ' to have a property ' + i(name)
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+ ' of ' + i(val) + ', but got ' + i(this.obj[name]) + (desc ? " | " + desc : "")
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, 'expected ' + this.inspect + ' to not have a property ' + i(name) + ' of ' + i(val) + (desc ? " | " + desc : ""));
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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 own property _name_ exists.
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*
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* @param {String} name
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* @param {String} description
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* @api public
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*/
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ownProperty: function(name, desc){
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this.assert(
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this.obj.hasOwnProperty(name)
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, 'expected ' + this.inspect + ' to have own property ' + i(name) + (desc ? " | " + desc : "")
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, 'expected ' + this.inspect + ' to not have own property ' + i(name) + (desc ? " | " + desc : ""));
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return this;
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},
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/**
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* Assert that `obj` is present via `.indexOf()`.
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*
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* @param {Mixed} obj
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* @param {String} description
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* @api public
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*/
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include: function(obj, desc){
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this.assert(
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~this.obj.indexOf(obj)
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, 'expected ' + this.inspect + ' to include ' + i(obj) + (desc ? " | " + desc : "")
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, 'expected ' + this.inspect + ' to not include ' + i(obj) + (desc ? " | " + desc : ""));
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return this;
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},
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/**
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* Assert that an object equal to `obj` is present.
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*
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* @param {Array} obj
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* @param {String} description
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* @api public
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*/
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includeEql: function(obj, desc){
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this.assert(
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this.obj.some(function(item) { return eql(obj, item); })
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, 'expected ' + this.inspect + ' to include an object equal to ' + i(obj) + (desc ? " | " + desc : "")
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, 'expected ' + this.inspect + ' to not include an object equal to ' + i(obj) + (desc ? " | " + desc : ""));
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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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contain: function(obj){
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console.warn('should.contain() is deprecated, use should.include()');
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this.obj.should.be.an.instanceof(Array);
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this.assert(
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~this.obj.indexOf(obj)
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, 'expected ' + this.inspect + ' to contain ' + i(obj)
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, 'expected ' + this.inspect + ' 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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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 = Object.keys(this.obj)
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, len = keys.length;
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// make sure they're all present
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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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// matching length
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ok = ok && keys.length == actual.length;
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// key string
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if (len > 1) {
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keys = keys.map(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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// message
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str = 'have ' + (len > 1 ? 'keys ' : 'key ') + str;
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this.assert(
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ok
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, 'expected ' + this.inspect + ' to ' + str
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, 'expected ' + this.inspect + ' to not ' + str);
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return this;
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},
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/**
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* Assert that header `field` has the given `val`.
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*
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* @param {String} field
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* @param {String} val
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* @return {Assertion} for chaining
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* @api public
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*/
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header: function(field, val){
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this.obj.should
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.have.property('headers').and
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.have.property(field.toLowerCase(), val);
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return this;
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},
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/**
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* Assert `.statusCode` of `code`.
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*
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* @param {Number} code
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* @return {Assertion} for chaining
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* @api public
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*/
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status: function(code){
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this.obj.should.have.property('statusCode');
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var status = this.obj.statusCode;
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this.assert(
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code == status
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, 'expected response code of ' + code + ' ' + i(statusCodes[code])
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+ ', but got ' + status + ' ' + i(statusCodes[status])
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, 'expected to not respond with ' + code + ' ' + i(statusCodes[code]));
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return this;
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},
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/**
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|
* Assert that this response has content-type: application/json.
|
|
*
|
|
* @return {Assertion} for chaining
|
|
* @api public
|
|
*/
|
|
|
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get json() {
|
|
this.obj.should.have.property('headers');
|
|
this.obj.headers.should.have.property('content-type');
|
|
this.obj.headers['content-type'].should.include('application/json');
|
|
},
|
|
|
|
/**
|
|
* Assert that this response has content-type: text/html.
|
|
*
|
|
* @return {Assertion} for chaining
|
|
* @api public
|
|
*/
|
|
|
|
get html() {
|
|
this.obj.should.have.property('headers');
|
|
this.obj.headers.should.have.property('content-type');
|
|
this.obj.headers['content-type'].should.include('text/html');
|
|
},
|
|
|
|
/**
|
|
* Assert that this function will or will not
|
|
* throw an exception.
|
|
*
|
|
* @return {Assertion} for chaining
|
|
* @api public
|
|
*/
|
|
|
|
throw: function(message){
|
|
var fn = this.obj
|
|
, err = {}
|
|
, errorInfo = ''
|
|
, ok = true;
|
|
|
|
try {
|
|
fn();
|
|
ok = false;
|
|
} catch (e) {
|
|
err = e;
|
|
}
|
|
|
|
if (ok) {
|
|
if ('string' == typeof message) {
|
|
ok = message == err.message;
|
|
} else if (message instanceof RegExp) {
|
|
ok = message.test(err.message);
|
|
}
|
|
|
|
if (message && !ok) {
|
|
if ('string' == typeof message) {
|
|
errorInfo = " with a message matching '" + message + "', but got '" + err.message + "'";
|
|
} else {
|
|
errorInfo = " with a message matching " + message + ", but got '" + err.message + "'";
|
|
}
|
|
}
|
|
}
|
|
|
|
this.assert(
|
|
ok
|
|
, 'expected an exception to be thrown' + errorInfo
|
|
, 'expected no exception to be thrown, got "' + err.message + '"');
|
|
|
|
return this;
|
|
}
|
|
};
|
|
|
|
/**
|
|
* Aliases.
|
|
*/
|
|
|
|
(function alias(name, as){
|
|
Assertion.prototype[as] = Assertion.prototype[name];
|
|
return alias;
|
|
})
|
|
('length', 'lengthOf')
|
|
('keys', 'key')
|
|
('ownProperty', 'haveOwnProperty')
|
|
('above', 'greaterThan')
|
|
('below', 'lessThan');
|
|
|