(function(global, module) {
var exports = module.exports;
/**
* Exports.
*/
module.exports = expect;
expect.Assertion = Assertion;
/**
* Exports version.
*/
expect.version = '0.3.1';
/**
* Possible assertion flags.
*/
var flags = {
not: ['to', 'be', 'have', 'include', 'only'],
to: ['be', 'have', 'include', 'only', 'not'],
only: ['have'],
have: ['own'],
be: ['an']
};
function expect(obj) {
return new Assertion(obj);
}
/**
* Constructor
*
* @api private
*/
function Assertion(obj, flag, parent) {
this.obj = obj;
this.flags = {};
if (undefined != parent) {
this.flags[flag] = true;
for (var i in parent.flags) {
if (parent.flags.hasOwnProperty(i)) {
this.flags[i] = true;
}
}
}
var $flags = flag ? flags[flag] : keys(flags),
self = this;
if ($flags) {
for (var i = 0, l = $flags.length; i < l; i++) {
// avoid recursion
if (this.flags[$flags[i]]) continue;
var name = $flags[i],
assertion = new Assertion(this.obj, name, this);
if ('function' == typeof Assertion.prototype[name]) {
// clone the function, make sure we dont touch the prot reference
var old = this[name];
this[name] = function() {
return old.apply(self, arguments);
};
for (var fn in Assertion.prototype) {
if (Assertion.prototype.hasOwnProperty(fn) && fn != name) {
this[name][fn] = bind(assertion[fn], assertion);
}
}
} else {
this[name] = assertion;
}
}
}
}
/**
* Performs an assertion
*
* @api private
*/
Assertion.prototype.assert = function(truth, msg, error, expected) {
var msg = this.flags.not ? error : msg,
ok = this.flags.not ? !truth : truth,
err;
if (!ok) {
err = new Error(msg.call(this));
if (arguments.length > 3) {
err.actual = this.obj;
err.expected = expected;
err.showDiff = true;
}
throw err;
}
this.and = new Assertion(this.obj);
};
/**
* Check if the value is truthy
*
* @api public
*/
Assertion.prototype.ok = function() {
this.assert(
!!this.obj,
function() {
return 'expected ' + i(this.obj) + ' to be truthy';
},
function() {
return 'expected ' + i(this.obj) + ' to be falsy';
}
);
};
/**
* Creates an anonymous function which calls fn with arguments.
*
* @api public
*/
Assertion.prototype.withArgs = function() {
expect(this.obj).to.be.a('function');
var fn = this.obj;
var args = Array.prototype.slice.call(arguments);
return expect(function() {
fn.apply(null, args);
});
};
/**
* Assert that the function throws.
*
* @param {Function|RegExp} callback, or regexp to match error string against
* @api public
*/
Assertion.prototype.throwError = Assertion.prototype.throwException = function(fn) {
expect(this.obj).to.be.a('function');
var thrown = false,
not = this.flags.not;
try {
this.obj();
} catch (e) {
if (isRegExp(fn)) {
var subject = 'string' == typeof e ? e : e.message;
if (not) {
expect(subject).to.not.match(fn);
} else {
expect(subject).to.match(fn);
}
} else if ('function' == typeof fn) {
fn(e);
}
thrown = true;
}
if (isRegExp(fn) && not) {
// in the presence of a matcher, ensure the `not` only applies to
// the matching.
this.flags.not = false;
}
var name = this.obj.name || 'fn';
this.assert(
thrown,
function() {
return 'expected ' + name + ' to throw an exception';
},
function() {
return 'expected ' + name + ' not to throw an exception';
}
);
};
/**
* Checks if the array is empty.
*
* @api public
*/
Assertion.prototype.empty = function() {
var expectation;
if ('object' == typeof this.obj && null !== this.obj && !isArray(this.obj)) {
if ('number' == typeof this.obj.length) {
expectation = !this.obj.length;
} else {
expectation = !keys(this.obj).length;
}
} else {
if ('string' != typeof this.obj) {
expect(this.obj).to.be.an('object');
}
expect(this.obj).to.have.property('length');
expectation = !this.obj.length;
}
this.assert(
expectation,
function() {
return 'expected ' + i(this.obj) + ' to be empty';
},
function() {
return 'expected ' + i(this.obj) + ' to not be empty';
}
);
return this;
};
/**
* Checks if the obj exactly equals another.
*
* @api public
*/
Assertion.prototype.be = Assertion.prototype.equal = function(obj) {
this.assert(
obj === this.obj,
function() {
return 'expected ' + i(this.obj) + ' to equal ' + i(obj);
},
function() {
return 'expected ' + i(this.obj) + ' to not equal ' + i(obj);
}
);
return this;
};
/**
* Checks if the obj sortof equals another.
*
* @api public
*/
Assertion.prototype.eql = function(obj) {
this.assert(
expect.eql(this.obj, obj),
function() {
return 'expected ' + i(this.obj) + ' to sort of equal ' + i(obj);
},
function() {
return 'expected ' + i(this.obj) + ' to sort of not equal ' + i(obj);
},
obj
);
return this;
};
/**
* Assert within start to finish (inclusive).
*
* @param {Number} start
* @param {Number} finish
* @api public
*/
Assertion.prototype.within = function(start, finish) {
var range = start + '..' + finish;
this.assert(
this.obj >= start && this.obj <= finish,
function() {
return 'expected ' + i(this.obj) + ' to be within ' + range;
},
function() {
return 'expected ' + i(this.obj) + ' to not be within ' + range;
}
);
return this;
};
/**
* Assert typeof / instance of
*
* @api public
*/
Assertion.prototype.a = Assertion.prototype.an = function(type) {
if ('string' == typeof type) {
// proper english in error msg
var n = /^[aeiou]/.test(type) ? 'n' : '';
// typeof with support for 'array'
this.assert(
'array' == type
? isArray(this.obj)
: 'regexp' == type
? isRegExp(this.obj)
: 'object' == type
? 'object' == typeof this.obj && null !== this.obj
: type == typeof this.obj,
function() {
return 'expected ' + i(this.obj) + ' to be a' + n + ' ' + type;
},
function() {
return 'expected ' + i(this.obj) + ' not to be a' + n + ' ' + type;
}
);
} else {
// instanceof
var name = type.name || 'supplied constructor';
this.assert(
this.obj instanceof type,
function() {
return 'expected ' + i(this.obj) + ' to be an instance of ' + name;
},
function() {
return 'expected ' + i(this.obj) + ' not to be an instance of ' + name;
}
);
}
return this;
};
/**
* Assert numeric value above _n_.
*
* @param {Number} n
* @api public
*/
Assertion.prototype.greaterThan = Assertion.prototype.above = function(n) {
this.assert(
this.obj > n,
function() {
return 'expected ' + i(this.obj) + ' to be above ' + n;
},
function() {
return 'expected ' + i(this.obj) + ' to be below ' + n;
}
);
return this;
};
/**
* Assert numeric value below _n_.
*
* @param {Number} n
* @api public
*/
Assertion.prototype.lessThan = Assertion.prototype.below = function(n) {
this.assert(
this.obj < n,
function() {
return 'expected ' + i(this.obj) + ' to be below ' + n;
},
function() {
return 'expected ' + i(this.obj) + ' to be above ' + n;
}
);
return this;
};
/**
* Assert string value matches _regexp_.
*
* @param {RegExp} regexp
* @api public
*/
Assertion.prototype.match = function(regexp) {
this.assert(
regexp.exec(this.obj),
function() {
return 'expected ' + i(this.obj) + ' to match ' + regexp;
},
function() {
return 'expected ' + i(this.obj) + ' not to match ' + regexp;
}
);
return this;
};
/**
* Assert property "length" exists and has value of _n_.
*
* @param {Number} n
* @api public
*/
Assertion.prototype.length = function(n) {
expect(this.obj).to.have.property('length');
var len = this.obj.length;
this.assert(
n == len,
function() {
return 'expected ' + i(this.obj) + ' to have a length of ' + n + ' but got ' + len;
},
function() {
return 'expected ' + i(this.obj) + ' to not have a length of ' + len;
}
);
return this;
};
/**
* Assert property _name_ exists, with optional _val_.
*
* @param {String} name
* @param {Mixed} val
* @api public
*/
Assertion.prototype.property = function(name, val) {
if (this.flags.own) {
this.assert(
Object.prototype.hasOwnProperty.call(this.obj, name),
function() {
return 'expected ' + i(this.obj) + ' to have own property ' + i(name);
},
function() {
return 'expected ' + i(this.obj) + ' to not have own property ' + i(name);
}
);
return this;
}
if (this.flags.not && undefined !== val) {
if (undefined === this.obj[name]) {
throw new Error(i(this.obj) + ' has no property ' + i(name));
}
} else {
var hasProp;
try {
hasProp = name in this.obj;
} catch (e) {
hasProp = undefined !== this.obj[name];
}
this.assert(
hasProp,
function() {
return 'expected ' + i(this.obj) + ' to have a property ' + i(name);
},
function() {
return 'expected ' + i(this.obj) + ' to not have a property ' + i(name);
}
);
}
if (undefined !== val) {
this.assert(
val === this.obj[name],
function() {
return (
'expected ' +
i(this.obj) +
' to have a property ' +
i(name) +
' of ' +
i(val) +
', but got ' +
i(this.obj[name])
);
},
function() {
return (
'expected ' +
i(this.obj) +
' to not have a property ' +
i(name) +
' of ' +
i(val)
);
}
);
}
this.obj = this.obj[name];
return this;
};
/**
* Assert that the array contains _obj_ or string contains _obj_.
*
* @param {Mixed} obj|string
* @api public
*/
Assertion.prototype.string = Assertion.prototype.contain = function(obj) {
if ('string' == typeof this.obj) {
this.assert(
~this.obj.indexOf(obj),
function() {
return 'expected ' + i(this.obj) + ' to contain ' + i(obj);
},
function() {
return 'expected ' + i(this.obj) + ' to not contain ' + i(obj);
}
);
} else {
this.assert(
~indexOf(this.obj, obj),
function() {
return 'expected ' + i(this.obj) + ' to contain ' + i(obj);
},
function() {
return 'expected ' + i(this.obj) + ' to not contain ' + i(obj);
}
);
}
return this;
};
/**
* Assert exact keys or inclusion of keys by using
* the `.own` modifier.
*
* @param {Array|String ...} keys
* @api public
*/
Assertion.prototype.key = Assertion.prototype.keys = function($keys) {
var str,
ok = true;
$keys = isArray($keys) ? $keys : Array.prototype.slice.call(arguments);
if (!$keys.length) throw new Error('keys required');
var actual = keys(this.obj),
len = $keys.length;
// Inclusion
ok = every($keys, function(key) {
return ~indexOf(actual, key);
});
// Strict
if (!this.flags.not && this.flags.only) {
ok = ok && $keys.length == actual.length;
}
// Key string
if (len > 1) {
$keys = map($keys, function(key) {
return i(key);
});
var last = $keys.pop();
str = $keys.join(', ') + ', and ' + last;
} else {
str = i($keys[0]);
}
// Form
str = (len > 1 ? 'keys ' : 'key ') + str;
// Have / include
str = (!this.flags.only ? 'include ' : 'only have ') + str;
// Assertion
this.assert(
ok,
function() {
return 'expected ' + i(this.obj) + ' to ' + str;
},
function() {
return 'expected ' + i(this.obj) + ' to not ' + str;
}
);
return this;
};
/**
* Assert a failure.
*
* @param {String ...} custom message
* @api public
*/
Assertion.prototype.fail = function(msg) {
var error = function() {
return msg || 'explicit failure';
};
this.assert(false, error, error);
return this;
};
/**
* Function bind implementation.
*/
function bind(fn, scope) {
return function() {
return fn.apply(scope, arguments);
};
}
/**
* Array every compatibility
*
* @see bit.ly/5Fq1N2
* @api public
*/
function every(arr, fn, thisObj) {
var scope = thisObj || global;
for (var i = 0, j = arr.length; i < j; ++i) {
if (!fn.call(scope, arr[i], i, arr)) {
return false;
}
}
return true;
}
/**
* Array indexOf compatibility.
*
* @see bit.ly/a5Dxa2
* @api public
*/
function indexOf(arr, o, i) {
if (Array.prototype.indexOf) {
return Array.prototype.indexOf.call(arr, o, i);
}
if (arr.length === undefined) {
return -1;
}
for (
var j = arr.length, i = i < 0 ? (i + j < 0 ? 0 : i + j) : i || 0;
i < j && arr[i] !== o;
i++
);
return j <= i ? -1 : i;
}
// https://gist.github.com/1044128/
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;
}
var json = (function() {
'use strict';
if ('object' == typeof JSON && JSON.parse && JSON.stringify) {
return {
parse: nativeJSON.parse,
stringify: nativeJSON.stringify
};
}
var JSON = {};
function f(n) {
// Format integers to have at least two digits.
return n < 10 ? '0' + n : n;
}
function date(d, key) {
return isFinite(d.valueOf())
? d.getUTCFullYear() +
'-' +
f(d.getUTCMonth() + 1) +
'-' +
f(d.getUTCDate()) +
'T' +
f(d.getUTCHours()) +
':' +
f(d.getUTCMinutes()) +
':' +
f(d.getUTCSeconds()) +
'Z'
: null;
}
var cx = /[\u0000\u00ad\u0600-\u0604\u070f\u17b4\u17b5\u200c-\u200f\u2028-\u202f\u2060-\u206f\ufeff\ufff0-\uffff]/g,
escapable = /[\\\"\x00-\x1f\x7f-\x9f\u00ad\u0600-\u0604\u070f\u17b4\u17b5\u200c-\u200f\u2028-\u202f\u2060-\u206f\ufeff\ufff0-\uffff]/g,
gap,
indent,
meta = {
// table of character substitutions
'\b': '\\b',
'\t': '\\t',
'\n': '\\n',
'\f': '\\f',
'\r': '\\r',
'"': '\\"',
'\\': '\\\\'
},
rep;
function quote(string) {
// If the string contains no control characters, no quote characters, and no
// backslash characters, then we can safely slap some quotes around it.
// Otherwise we must also replace the offending characters with safe escape
// sequences.
escapable.lastIndex = 0;
return escapable.test(string)
? '"' +
string.replace(escapable, function(a) {
var c = meta[a];
return typeof c === 'string'
? c
: '\\u' + ('0000' + a.charCodeAt(0).toString(16)).slice(-4);
}) +
'"'
: '"' + string + '"';
}
function str(key, holder) {
// Produce a string from holder[key].
var i, // The loop counter.
k, // The member key.
v, // The member value.
length,
mind = gap,
partial,
value = holder[key];
// If the value has a toJSON method, call it to obtain a replacement value.
if (value instanceof Date) {
value = date(key);
}
// If we were called with a replacer function, then call the replacer to
// obtain a replacement value.
if (typeof rep === 'function') {
value = rep.call(holder, key, value);
}
// What happens next depends on the value's type.
switch (typeof value) {
case 'string':
return quote(value);
case 'number':
// JSON numbers must be finite. Encode non-finite numbers as null.
return isFinite(value) ? String(value) : 'null';
case 'boolean':
case 'null':
// If the value is a boolean or null, convert it to a string. Note:
// typeof null does not produce 'null'. The case is included here in
// the remote chance that this gets fixed someday.
return String(value);
// If the type is 'object', we might be dealing with an object or an array or
// null.
case 'object':
// Due to a specification blunder in ECMAScript, typeof null is 'object',
// so watch out for that case.
if (!value) {
return 'null';
}
// Make an array to hold the partial results of stringifying this object value.
gap += indent;
partial = [];
// Is the value an array?
if (Object.prototype.toString.apply(value) === '[object Array]') {
// The value is an array. Stringify every element. Use null as a placeholder
// for non-JSON values.
length = value.length;
for (i = 0; i < length; i += 1) {
partial[i] = str(i, value) || 'null';
}
// Join all of the elements together, separated with commas, and wrap them in
// brackets.
v =
partial.length === 0
? '[]'
: gap
? '[\n' + gap + partial.join(',\n' + gap) + '\n' + mind + ']'
: '[' + partial.join(',') + ']';
gap = mind;
return v;
}
// If the replacer is an array, use it to select the members to be stringified.
if (rep && typeof rep === 'object') {
length = rep.length;
for (i = 0; i < length; i += 1) {
if (typeof rep[i] === 'string') {
k = rep[i];
v = str(k, value);
if (v) {
partial.push(quote(k) + (gap ? ': ' : ':') + v);
}
}
}
} else {
// Otherwise, iterate through all of the keys in the object.
for (k in value) {
if (Object.prototype.hasOwnProperty.call(value, k)) {
v = str(k, value);
if (v) {
partial.push(quote(k) + (gap ? ': ' : ':') + v);
}
}
}
}
// Join all of the member texts together, separated with commas,
// and wrap them in braces.
v =
partial.length === 0
? '{}'
: gap
? '{\n' + gap + partial.join(',\n' + gap) + '\n' + mind + '}'
: '{' + partial.join(',') + '}';
gap = mind;
return v;
}
}
// If the JSON object does not yet have a stringify method, give it one.
JSON.stringify = function(value, replacer, space) {
// The stringify method takes a value and an optional replacer, and an optional
// space parameter, and returns a JSON text. The replacer can be a function
// that can replace values, or an array of strings that will select the keys.
// A default replacer method can be provided. Use of the space parameter can
// produce text that is more easily readable.
var i;
gap = '';
indent = '';
// If the space parameter is a number, make an indent string containing that
// many spaces.
if (typeof space === 'number') {
for (i = 0; i < space; i += 1) {
indent += ' ';
}
// If the space parameter is a string, it will be used as the indent string.
} else if (typeof space === 'string') {
indent = space;
}
// If there is a replacer, it must be a function or an array.
// Otherwise, throw an error.
rep = replacer;
if (
replacer &&
typeof replacer !== 'function' &&
(typeof replacer !== 'object' || typeof replacer.length !== 'number')
) {
throw new Error('JSON.stringify');
}
// Make a fake root object containing our value under the key of ''.
// Return the result of stringifying the value.
return str('', {'': value});
};
// If the JSON object does not yet have a parse method, give it one.
JSON.parse = function(text, reviver) {
// The parse method takes a text and an optional reviver function, and returns
// a JavaScript value if the text is a valid JSON text.
var j;
function walk(holder, key) {
// The walk method is used to recursively walk the resulting structure so
// that modifications can be made.
var k,
v,
value = holder[key];
if (value && typeof value === 'object') {
for (k in value) {
if (Object.prototype.hasOwnProperty.call(value, k)) {
v = walk(value, k);
if (v !== undefined) {
value[k] = v;
} else {
delete value[k];
}
}
}
}
return reviver.call(holder, key, value);
}
// Parsing happens in four stages. In the first stage, we replace certain
// Unicode characters with escape sequences. JavaScript handles many characters
// incorrectly, either silently deleting them, or treating them as line endings.
text = String(text);
cx.lastIndex = 0;
if (cx.test(text)) {
text = text.replace(cx, function(a) {
return '\\u' + ('0000' + a.charCodeAt(0).toString(16)).slice(-4);
});
}
// In the second stage, we run the text against regular expressions that look
// for non-JSON patterns. We are especially concerned with '()' and 'new'
// because they can cause invocation, and '=' because it can cause mutation.
// But just to be safe, we want to reject all unexpected forms.
// We split the second stage into 4 regexp operations in order to work around
// crippling inefficiencies in IE's and Safari's regexp engines. First we
// replace the JSON backslash pairs with '@' (a non-JSON character). Second, we
// replace all simple value tokens with ']' characters. Third, we delete all
// open brackets that follow a colon or comma or that begin the text. Finally,
// we look to see that the remaining characters are only whitespace or ']' or
// ',' or ':' or '{' or '}'. If that is so, then the text is safe for eval.
if (
/^[\],:{}\s]*$/.test(
text
.replace(/\\(?:["\\\/bfnrt]|u[0-9a-fA-F]{4})/g, '@')
.replace(
/"[^"\\\n\r]*"|true|false|null|-?\d+(?:\.\d*)?(?:[eE][+\-]?\d+)?/g,
']'
)
.replace(/(?:^|:|,)(?:\s*\[)+/g, '')
)
) {
// In the third stage we use the eval function to compile the text into a
// JavaScript structure. The '{' operator is subject to a syntactic ambiguity
// in JavaScript: it can begin a block or an object literal. We wrap the text
// in parens to eliminate the ambiguity.
j = eval('(' + text + ')');
// In the optional fourth stage, we recursively walk the new structure, passing
// each name/value pair to a reviver function for possible transformation.
return typeof reviver === 'function' ? walk({'': j}, '') : j;
}
// If the text is not JSON parseable, then a SyntaxError is thrown.
throw new SyntaxError('JSON.parse');
};
return JSON;
})();
if ('undefined' != typeof window) {
window.expect = module.exports;
}
})(this, 'undefined' != typeof module ? module : {exports: {}});