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/*!
* Nodeunit
* Copyright (c) 2010 Caolan McMahon
* MIT Licensed
*
* THIS FILE SHOULD BE BROWSER-COMPATIBLE JS!
* You can use @REMOVE_LINE_FOR_BROWSER to remove code from the browser build.
* Only code on that line will be removed, it's mostly to avoid requiring code
* that is node specific
*/
/**
* Module dependencies
*/
var assert = require('./assert'), //@REMOVE_LINE_FOR_BROWSER
async = require('async'); //@REMOVE_LINE_FOR_BROWSER
/**
* Creates assertion objects representing the result of an assert call.
* Accepts an object or AssertionError as its argument.
*
* @param {object} obj
* @api public
*/
exports.assertion = function (obj) {
return {
method: obj.method || '',
message: obj.message || (obj.error && obj.error.message) || '',
error: obj.error,
passed: function () {
return !this.error;
},
failed: function () {
return Boolean(this.error);
}
};
};
/**
* Creates an assertion list object representing a group of assertions.
* Accepts an array of assertion objects.
*
* @param {Array} arr
* @param {Number} duration
* @api public
*/
exports.assertionList = function (arr, duration) {
var that = arr || [];
that.failures = function () {
var failures = 0;
for (var i = 0; i < this.length; i += 1) {
if (this[i].failed()) {
failures += 1;
}
}
return failures;
};
that.passes = function () {
return that.length - that.failures();
};
that.duration = duration || 0;
return that;
};
/**
* Create a wrapper function for assert module methods. Executes a callback
* after it's complete with an assertion object representing the result.
*
* @param {Function} callback
* @api private
*/
var assertWrapper = function (callback) {
return function (new_method, assert_method, arity) {
return function () {
var message = arguments[arity - 1];
var a = exports.assertion({method: new_method, message: message});
try {
assert[assert_method].apply(null, arguments);
}
catch (e) {
a.error = e;
}
callback(a);
};
};
};
/**
* Creates the 'test' object that gets passed to every test function.
* Accepts the name of the test function as its first argument, followed by
* the start time in ms, the options object and a callback function.
*
* @param {String} name
* @param {Number} start
* @param {Object} options
* @param {Function} callback
* @api public
*/
exports.test = function (name, start, options, callback) {
var expecting;
var a_list = [];
var wrapAssert = assertWrapper(function (a) {
a_list.push(a);
if (options.log) {
async.nextTick(function () {
options.log(a);
});
}
});
var test = {
done: function (err) {
if (expecting !== undefined && expecting !== a_list.length) {
var e = new Error(
'Expected ' + expecting + ' assertions, ' +
a_list.length + ' ran'
);
var a1 = exports.assertion({method: 'expect', error: e});
a_list.push(a1);
if (options.log) {
async.nextTick(function () {
options.log(a1);
});
}
}
if (err) {
var a2 = exports.assertion({error: err});
a_list.push(a2);
if (options.log) {
async.nextTick(function () {
options.log(a2);
});
}
}
var end = new Date().getTime();
async.nextTick(function () {
var assertion_list = exports.assertionList(a_list, end - start);
options.testDone(name, assertion_list);
callback(null, a_list);
});
},
ok: wrapAssert('ok', 'ok', 2),
same: wrapAssert('same', 'deepEqual', 3),
equals: wrapAssert('equals', 'equal', 3),
expect: function (num) {
expecting = num;
},
_assertion_list: a_list
};
// add all functions from the assert module
for (var k in assert) {
if (assert.hasOwnProperty(k)) {
test[k] = wrapAssert(k, k, assert[k].length);
}
}
return test;
};
/**
* Ensures an options object has all callbacks, adding empty callback functions
* if any are missing.
*
* @param {Object} opt
* @return {Object}
* @api public
*/
exports.options = function (opt) {
var optionalCallback = function (name) {
opt[name] = opt[name] || function () {};
};
optionalCallback('moduleStart');
optionalCallback('moduleDone');
optionalCallback('testStart');
optionalCallback('testReady');
optionalCallback('testDone');
//optionalCallback('log');
// 'done' callback is not optional.
return opt;
};
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