chai/chai.js

!function (name, definition) {
  if (typeof define == 'function' && typeof define.amd  == 'object') define(definition);
  else this[name] = definition();
}('chai', function () {

// CommonJS require()

function require(p){
    var path = require.resolve(p)
      , mod = require.modules[path];
    if (!mod) throw new Error('failed to require "' + p + '"');
    if (!mod.exports) {
      mod.exports = {};
      mod.call(mod.exports, mod, mod.exports, require.relative(path));
    }
    return mod.exports;
  }

require.modules = {};

require.resolve = function (path){
    var orig = path
      , reg = path + '.js'
      , index = path + '/index.js';
    return require.modules[reg] && reg
      || require.modules[index] && index
      || orig;
  };

require.register = function (path, fn){
    require.modules[path] = fn;
  };

require.relative = function (parent) {
    return function(p){
      if ('.' != p[0]) return require(p);

      var path = parent.split('/')
        , segs = p.split('/');
      path.pop();

      for (var i = 0; i < segs.length; i++) {
        var seg = segs[i];
        if ('..' == seg) path.pop();
        else if ('.' != seg) path.push(seg);
      }

      return require(path.join('/'));
    };
  };


require.register("assertion.js", function(module, exports, require){
/*!
 * chai
 * http://chaijs.com
 * Copyright(c) 2011-2012 Jake Luer <jake@alogicalparadox.com>
 * MIT Licensed
 */


/*!
 * Module dependencies.
 */

var AssertionError = require('./browser/error')
  , toString = Object.prototype.toString
  , util = require('./utils')
  , flag = util.flag;

/*!
 * Module export.
 */

module.exports = Assertion;


/*!
 * Assertion Constructor
 *
 * Creates object for chaining.
 *
 * @api private
 */

function Assertion (obj, msg, stack) {
  flag(this, 'ssfi', stack || arguments.callee);
  flag(this, 'object', obj);
  flag(this, 'message', msg);
}

/*!
  * ### Assertion.includeStack
  *
  * User configurable property, influences whether stack trace
  * is included in Assertion error message. Default of false
  * suppresses stack trace in the error message
  *
  *     Assertion.includeStack = true;  // enable stack on error
  *
  * @api public
  */

Assertion.includeStack = false;

Assertion.addProperty = function (name, fn) {
  util.addProperty(this.prototype, name, fn);
};

Assertion.addMethod = function (name, fn) {
  util.addMethod(this.prototype, name, fn);
};

Assertion.overwriteProperty = function (name, fn) {
  util.overwriteProperty(this.prototype, name, fn);
};

Assertion.overwriteMethod = function (name, fn) {
  util.overwriteMethod(this.prototype, name, fn);
};

/*!
 * ### .assert(expression, message, negateMessage, expected, actual)
 *
 * Executes an expression and check expectations. Throws AssertionError for reporting if test doesn't pass.
 *
 * @name assert
 * @param {Philosophical} expression to be tested
 * @param {String} message to display if fails
 * @param {String} negatedMessage to display if negated expression fails
 * @param {Mixed} expected value (remember to check for negation)
 * @param {Mixed} actual (optional) will default to `this.obj`
 * @api private
 */

Assertion.prototype.assert = function (expr, msg, negateMsg, expected, _actual) {
  var msg = util.getMessage(this, arguments)
    , actual = util.getActual(this, arguments)
    , ok = util.test(this, arguments);

  if (!ok) {
    throw new AssertionError({
        message: msg
      , actual: actual
      , expected: expected
      , stackStartFunction: (Assertion.includeStack) ? this.assert : flag(this, 'ssfi')
    });
  }
};

/*!
 *
 * ### ._obj
 *
 * Quick reference to stored `actual` value for plugin developers.
 *
 * @api private
 */

Object.defineProperty(Assertion.prototype, '_obj',
  { get: function () {
      return flag(this, 'object');
    }
  , set: function (val) {
      flag(this, 'object', val);
    }
});

/**
 * ### Language Chains
 *
 * The following are provide as chainable getters to
 * improve the readability of your assertions. They
 * do not provide an testing capability unless they
 * have been overwritten by a plugin.
 *
 * **Chains**
 *
 * - to
 * - be
 * - been
 * - is
 * - and
 * - have
 * - with
 *
 * @name language chains
 * @api public
 */

[ 'to', 'be', 'been'
, 'is', 'and', 'have'
, 'with' ].forEach(function (chain) {
  Object.defineProperty(Assertion.prototype, chain,
    { get: function () {
        return this;
      }
    , configurable: true
  });
});

/**
 * ### .not
 *
 * Negates any of assertions following in the chain.
 *
 *    expect(foo).to.not.equal('bar');
 *    expect(goodFn).to.not.throw(Error);
 *    expect({ foo: 'baz' }).to.have.property('foo')
 *      .and.not.equal('bar');
 *
 * @name not
 * @api public
 */

Object.defineProperty(Assertion.prototype, 'not',
  { get: function () {
      flag(this, 'negate', true);
      return this;
    }
  , configurable: true
});

/**
 * ### .a(type)
 *
 * The `a` and `an` assertions are aliases that can be
 * used either as property languague chains or to assert
 * typeof.
 *
 *     // typeof
 *     expect('test').to.be.a('string');
 *     expect({ foo: 'bar' }).to.be.an('object');
 *
 *     // language chain
 *     expect(foo).to.be.an.instanceof(Foo);
 *
 * @name a
 * @alias an
 * @param {String} type
 * @api public
 */

var an = function () {
  var assert = function(type) {
    var obj = flag(this, 'object')
      , klass = type.charAt(0).toUpperCase() + type.slice(1);

    this.assert(
        '[object ' + klass + ']' === toString.call(obj)
      , 'expected #{this} to be a ' + type
      , 'expected #{this} not to be a ' + type
      , '[object ' + klass + ']'
      , toString.call(obj)
    );

    return this;
  };

  assert.__proto__ = this;
  return assert;
};

Object.defineProperty(Assertion.prototype, 'an',
  { get: an
  , configurable: true
});

Object.defineProperty(Assertion.prototype, 'a',
  { get: an
  , configurable: true
});

/**
 * ### .include(value)
 *
 * The `include` and `contain` assertions can be used as either a property
 * based language chain or as a method to assert the inclusion of an object
 * in an Array or substring in string. When used as a property langugae chain,
 * it toggles the `contain` flag for the `keys` assertion.
 *
 *     expect([1,2,3]).to.include(2);
 *     expect('foobar').to.contain('foo');
 *     expect({ foo: 'bar', hello: 'universe' }).to.include.keys('foo');
 *
 * @name include
 * @alias contain
 * @param {Object|String|Number} obj
 * @api public
 */

var include = function () {
  flag(this, 'contains', true);

  var assert = function(val) {
    var obj = flag(this, 'object')
    this.assert(
        ~obj.indexOf(val)
      , 'expected #{this} to include ' + util.inspect(val)
      , 'expected #{this} to not include ' + util.inspect(val));

    return this;
  };

  assert.__proto__ = this;
  return assert;
};

Object.defineProperty(Assertion.prototype, 'contain',
  { get: include
  , configurable: true
});

Object.defineProperty(Assertion.prototype, 'include',
  { get: include
  , configurable: true
});

/**
 * ### .ok
 *
 * Assert object truthiness.
 *
 *     expect('everthing').to.be.ok;
 *     expect(1).to.be.ok;
 *     expect(false).to.not.be.ok;
 *     expect(undefined).to.not.be.ok;
 *     expect(null).to.not.be.ok;
 *
 * @name ok
 * @api public
 */

Object.defineProperty(Assertion.prototype, 'ok',
  { get: function () {
      this.assert(
          flag(this, 'object')
        , 'expected #{this} to be truthy'
        , 'expected #{this} to be falsy');

      return this;
    }
  , configurable: true
});

/**
 * ### .true
 *
 * Assert object is true
 *
 *     expect(true).to.be.true;
 *     expect(1).to.not.be.true;
 *
 * @name true
 * @api public
 */

Object.defineProperty(Assertion.prototype, 'true',
  { get: function () {
      this.assert(
          true === flag(this, 'object')
        , 'expected #{this} to be true'
        , 'expected #{this} to be false'
        , this.negate ? false : true
      );

      return this;
    }
  , configurable: true
});

/**
 * ### .false
 *
 * Assert object is false
 *
 *     expect(false).to.be.false;
 *     expect(0).to.not.be.false;
 *
 * @name false
 * @api public
 */

Object.defineProperty(Assertion.prototype, 'false',
  { get: function () {
      this.assert(
          false === flag(this, 'object')
        , 'expected #{this} to be false'
        , 'expected #{this} to be true'
        , this.negate ? true : false
      );

      return this;
    }
  , configurable: true
});

/**
 * ### .null
 *
 * Assert object is null
 *
 *     expect(null).to.be.null;
 *     expect(undefined).not.to.be.null;
 *
 * @name null
 * @api public
 */

Object.defineProperty(Assertion.prototype, 'null',
  { get: function () {
      this.assert(
          null === flag(this, 'object')
        , 'expected #{this} to be null'
        , 'expected #{this} not to be null'
        , this.negate ? false : true
      );

      return this;
    }
  , configurable: true
});

/**
 * ### .undefined
 *
 * Assert object is undefined
 *
 *      expect(undefined).to.be.undefined;
 *      expect(null).to.not.be.undefined;
 *
 * @name undefined
 * @api public
 */

Object.defineProperty(Assertion.prototype, 'undefined',
  { get: function () {
      this.assert(
          undefined === flag(this, 'object')
        , 'expected #{this} to be undefined'
        , 'expected #{this} not to be undefined'
        , this.negate ? false : true
      );

      return this;
    }
  , configurable: true
});

/**
 * ### .exist
 *
 * Assert object exists (null).
 *
 *     var foo = 'hi'
 *       , bar;
 *
 *     expect(foo).to.exist;
 *     expect(bar).to.not.exist;
 *
 * @name exist
 * @api public
 */

Object.defineProperty(Assertion.prototype, 'exist',
  { get: function () {
      this.assert(
          null != flag(this, 'object')
        , 'expected #{this} to exist'
        , 'expected #{this} to not exist'
      );

      return this;
    }
  , configurable: true
});

/**
 * ### .empty
 *
 * Assert object's length to be `0`. For arrays, it check
 * the length property. For objects it gets the count of
 * enumerable keys.
 *
 *     expect([]).to.be.empty;
 *     expect('').to.be.empty;
 *     expect({}).to.be.empty;
 *
 * @name empty
 * @api public
 */

Object.defineProperty(Assertion.prototype, 'empty',
  { get: function () {
      var obj = flag(this, 'object')
        , expected = obj;

      if (Array.isArray(obj) || 'string' === typeof object) {
        expected = obj.length;
      } else if (typeof obj === 'object') {
        expected = Object.keys(obj).length;
      }

      this.assert(
          !expected
        , 'expected #{this} to be empty'
        , 'expected #{this} not to be empty');

      return this;
    }
  , configurable: true
});

/**
 * ### .arguments
 *
 * Assert object is an instanceof arguments.
 *
 *     function test () {
 *       expect(arguments).to.be.arguments;
 *     }
 *
 * @name arguments
 * @api public
 */

Object.defineProperty(Assertion.prototype, 'arguments',
  { get: function () {
      var obj = flag(this, 'object');
      this.assert(
          '[object Arguments]' == Object.prototype.toString.call(obj)
        , 'expected #{this} to be arguments'
        , 'expected #{this} to not be arguments'
        , '[object Arguments]'
        , Object.prototype.toString.call(obj)
      );

      return this;
    }
  , configurable: true
});

/**
 * ### .equal(value)
 *
 * Assert strict equality (===).
 *
 *     expect('hello').to.equal('hello');
 *     expect(42).to.equal(42);
 *     expect(1).to.not.equal(true);
 *
 * @name equal
 * @param {Mixed} value
 * @api public
 */

Assertion.prototype.equal = function (val) {
  this.assert(
      val === flag(this, 'object')
    , 'expected #{this} to equal #{exp}'
    , 'expected #{this} to not equal #{exp}'
    , val );

  return this;
};

/**
 * ### .eql(value)
 *
 * Assert deep equality.
 *
 *     expect({ foo: 'bar' }).to.eql({ foo: 'bar' });
 *     expect([ 1, 2, 3 ]).to.eql([ 1, 2, 3 ]);
 *
 * @name eql
 * @param {*} value
 * @api public
 */

Assertion.prototype.eql = function (obj) {
  this.assert(
      util.eql(obj, flag(this, 'object'))
    , 'expected #{this} to equal #{exp}'
    , 'expected #{this} to not equal #{exp}'
    , obj );

  return this;
};

/**
 * ### .above(value)
 *
 * Assert greater than `value`.
 *
 *     expect(10).to.be.above(5);
 *
 * @name above
 * @alias gt
 * @param {Number} value
 * @api public
 */

Assertion.prototype.above = function (val) {
  this.assert(
      flag(this, 'object') > val
    , 'expected #{this} to be above ' + val
    , 'expected #{this} to be below ' + val);

  return this;
};

/**
 * ### .below(value)
 *
 * Assert less than `value`.
 *
 *     expect(5).to.be.below(10);
 *
 * @name below
 * @alias lt
 * @param {Number} value
 * @api public
 */

Assertion.prototype.below = function (val) {
  this.assert(
      flag(this, 'object') < val
    , 'expected #{this} to be below ' + val
    , 'expected #{this} to be above ' + val);

  return this;
};

/**
 * ### .within(start, finish)
 *
 * Assert that a number is within a range.
 *
 *     expect(7).to.be.within(5,10);
 *
 * @name within
 * @param {Number} start lowerbound inclusive
 * @param {Number} finish upperbound inclusive
 * @api public
 */

Assertion.prototype.within = function (start, finish) {
  var obj = flag(this, 'object')
    , range = start + '..' + finish;

  this.assert(
      obj >= start && obj <= finish
    , 'expected #{this} to be within ' + range
    , 'expected #{this} to not be within ' + range);

  return this;
};

/**
 * ### .instanceof(constructor)
 *
 * Assert instanceof.
 *
 *     var Tea = function (name) { this.name = name; }
 *       , Chai = new Tea('chai');
 *
 *     expect(Chai).to.be.an.instanceof(Tea);
 *     expect([ 1, 2, 3 ]).to.be.instanceof(Array);
 *
 * @name instanceof
 * @param {Constructor}
 * @alias instanceOf
 * @api public
 */

Assertion.prototype.instanceOf = function (constructor) {
  var name = util.getName(constructor);
  this.assert(
      flag(this, 'object') instanceof constructor
    , 'expected #{this} to be an instance of ' + name
    , 'expected #{this} to not be an instance of ' + name);

  return this;
};

/**
 * ### .property(name, [value])
 *
 * Assert that property of `name` exists, optionally with `value`.
 * Can use dot-notation for deep reference.
 *
 *     // legacy / simple referencing
 *     var obj = { foo: 'bar' }
 *     expect(obj).to.have.property('foo');
 *     expect(obj).to.have.property('foo', 'bar');
 *     expect(obj).to.have.property('foo').to.be.a('string');
 *
 *     // deep referencing
 *     var deepObj = {
 *         green: { tea: 'matcha' }
 *       , teas: [ 'chai', 'matcha', { tea: 'konacha' } ]
 *     };

 *     expect(deepObj).to.have.property('green.tea', 'matcha');
 *     expect(deepObj).to.have.property('teas[1]', 'matcha');
 *     expect(deepObj).to.have.property('teas[2].tea', 'konacha');
 *
 * @name property
 * @param {String} name
 * @param {Mixed} value (optional)
 * @returns value of property for chaining
 * @api public
 */

Assertion.prototype.property = function (name, val) {
  var obj = flag(this, 'object')
    , value = util.getPathValue(name, obj)
    , negate = flag(this, 'negate');

  if (negate && undefined !== val) {
    if (undefined === value) {
      throw new Error(util.inspect(obj) + ' has no property ' + util.inspect(name));
    }
  } else {
    this.assert(
        undefined !== value
      , 'expected #{this} to have a property ' + util.inspect(name)
      , 'expected #{this} to not have property ' + util.inspect(name));
  }

  if (undefined !== val) {
    this.assert(
        val === value
      , 'expected #{this} to have a property ' + util.inspect(name) + ' of #{exp}, but got #{act}'
      , 'expected #{this} to not have a property ' + util.inspect(name) + ' of #{act}'
      , val
      , value
    );
  }

  flag(this, 'object', value);
  return this;
};

/**
 * ### .ownProperty(name)
 *
 * Assert that has own property by `name`.
 *
 *     expect('test').to.have.ownProperty('length');
 *
 * @name ownProperty
 * @alias haveOwnProperty
 * @param {String} name
 * @api public
 */

Assertion.prototype.ownProperty = function (name) {
  var obj = flag(this, 'object');
  this.assert(
      obj.hasOwnProperty(name)
    , 'expected #{this} to have own property ' + util.inspect(name)
    , 'expected #{this} to not have own property ' + util.inspect(name));
  return this;
};

/**
 * ### .length(val)
 *
 * Assert that object has expected length.
 *
 *     expect([1,2,3]).to.have.length(3);
 *     expect('foobar').to.have.length(6);
 *
 * @name length
 * @alias lengthOf
 * @param {Number} length
 * @api public
 */

Assertion.prototype.length = function (n) {
  var obj = flag(this, 'object');
  new Assertion(obj).to.have.property('length');
  var len = obj.length;

  this.assert(
      len == n
    , 'expected #{this} to have a length of #{exp} but got #{act}'
    , 'expected #{this} to not have a length of #{act}'
    , n
    , len
  );

  return this;
};

/**
 * ### .match(regexp)
 *
 * Assert that matches regular expression.
 *
 *     expect('foobar').to.match(/^foo/);
 *
 * @name match
 * @param {RegExp} RegularExpression
 * @api public
 */

Assertion.prototype.match = function (re) {
  var obj = flag(this, 'object');
  this.assert(
      re.exec(obj)
    , 'expected #{this} to match ' + re
    , 'expected #{this} not to match ' + re);

  return this;
};


/**
 * ### .string(string)
 *
 * Assert inclusion of string in string.
 *
 *     expect('foobar').to.have.string('bar');
 *
 * @name string
 * @param {String} string
 * @api public
 */

Assertion.prototype.string = function (str) {
  var obj = flag(this, 'object');
  new Assertion(obj).is.a('string');

  this.assert(
      ~obj.indexOf(str)
    , 'expected #{this} to contain ' + util.inspect(str)
    , 'expected #{this} to not contain ' + util.inspect(str));

  return this;
};

/**
 * ### .keys(key1, [key2], [...])
 *
 * Assert exact keys or the inclusing of keys
 * using the `include` or `contain` modifier.
 *
 *     expect({ foo: 1, bar: 2 }).to.have.keys(['foo', 'bar']);
 *     expect({ foo: 1, bar: 2, baz: 3 }).to.contain.keys('foo', 'bar');
 *
 * @name keys
 * @alias key
 * @param {String|Array} Keys
 * @api public
 */

Assertion.prototype.keys = function(keys) {
  var obj = flag(this, 'object')
    , str
    , ok = true;

  keys = keys instanceof Array
    ? keys
    : Array.prototype.slice.call(arguments);

  if (!keys.length) throw new Error('keys required');

  var actual = Object.keys(obj)
    , len = keys.length;

  // Inclusion
  ok = keys.every(function(key){
    return ~actual.indexOf(key);
  });

  // Strict
  if (!flag(this, 'negate') && !flag(this, 'contains')) {
    ok = ok && keys.length == actual.length;
  }

  // Key string
  if (len > 1) {
    keys = keys.map(function(key){
      return util.inspect(key);
    });
    var last = keys.pop();
    str = keys.join(', ') + ', and ' + last;
  } else {
    str = util.inspect(keys[0]);
  }

  // Form
  str = (len > 1 ? 'keys ' : 'key ') + str;

  // Have / include
  str = (flag(this, 'contains') ? 'contain ' : 'have ') + str;

  // Assertion
  this.assert(
      ok
    , 'expected #{this} to ' + str
    , 'expected #{this} to not ' + str
    , keys
    , Object.keys(obj)
  );

  return this;
}

/**
 * ### .throw(constructor)
 *
 * Assert that a function will throw a specific type of error, or specific type of error
 * (as determined using `instanceof`), optionally with a RegExp or string inclusion test
 * for the error's message.
 *
 *     var err = new ReferenceError('This is a bad function.');
 *     var fn = function () { throw err; }
 *     expect(fn).to.throw(ReferenceError);
 *     expect(fn).to.throw(Error);
 *     expect(fn).to.throw(/bad function/);
 *     expect(fn).to.not.throw('good function');
 *     expect(fn).to.throw(ReferenceError, /bad function/);
 *     expect(fn).to.throw(err);
 *     expect(fn).to.not.throw(new RangeError('Out of range.'));
 *
 * Please note that when a throw expectation is negated, it will check each
 * parameter independently, starting with error constructor type. The appropriate way
 * to check for the existence of a type of error but for a message that does not match
 * is to use `and`.
 *
 *     expect(fn).to.throw(ReferenceError)
 *        .and.not.throw(/good function/);
 *
 * @name throw
 * @alias throws
 * @alias Throw
 * @param {ErrorConstructor} constructor
 * @see https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Error#Error_types
 * @api public
 */

Assertion.prototype.Throw = function (constructor, msg) {
  var obj = flag(this, 'object');
  new Assertion(obj).is.a('function');

  var thrown = false
    , desiredError = null
    , name = null;

  if (arguments.length === 0) {
    msg = null;
    constructor = null;
  } else if (constructor && (constructor instanceof RegExp || 'string' === typeof constructor)) {
    msg = constructor;
    constructor = null;
  } else if (constructor && constructor instanceof Error) {
    desiredError = constructor;
    constructor = null;
    msg = null;
  } else if (typeof constructor === 'function') {
    name = (new constructor()).name;
  } else {
    constructor = null;
  }

  try {
    obj();
  } catch (err) {
    // first, check desired error
    if (desiredError) {
      this.assert(
          err === desiredError
        , 'expected #{this} to throw ' + util.inspect(desiredError) + ' but ' + util.inspect(err) + ' was thrown'
        , 'expected #{this} to not throw ' + util.inspect(desiredError)
      );
      return this;
    }
    // next, check constructor
    if (constructor) {
      this.assert(
          err instanceof constructor
        , 'expected #{this} to throw ' + name + ' but a ' + err.name + ' was thrown'
        , 'expected #{this} to not throw ' + name );
      if (!msg) return this;
    }
    // next, check message
    if (err.message && msg && msg instanceof RegExp) {
      this.assert(
          msg.exec(err.message)
        , 'expected #{this} to throw error matching ' + msg + ' but got ' + util.inspect(err.message)
        , 'expected #{this} to throw error not matching ' + msg
      );
      return this;
    } else if (err.message && msg && 'string' === typeof msg) {
      this.assert(
          ~err.message.indexOf(msg)
        , 'expected #{this} to throw error including #{exp} but got #{act}'
        , 'expected #{this} to throw error not including #{act}'
        , msg
        , err.message
      );
      return this;
    } else {
      thrown = true;
    }
  }

  var expectedThrown = name ? name : desiredError ? util.inspect(desiredError) : 'an error';

  this.assert(
      thrown === true
    , 'expected #{this} to throw ' + expectedThrown
    , 'expected #{this} to not throw ' + expectedThrown);

  return this;
};

/**
 * ### .respondTo(method)
 *
 * Assert that object/class will respond to a method.
 *
 *     expect(Klass).to.respondTo('bar');
 *     expect(obj).to.respondTo('bar');
 *
 * @name respondTo
 * @param {String} method
 * @api public
 */

Assertion.prototype.respondTo = function (method) {
  var obj = flag(this, 'object')
    , context = ('function' === typeof obj)
      ? obj.prototype[method]
      : obj[method];

  this.assert(
      'function' === typeof context
    , 'expected #{this} to respond to ' + util.inspect(method)
    , 'expected #{this} to not respond to ' + util.inspect(method)
    , 'function'
    , typeof context
  );

  return this;
};

/**
 * ### .satisfy(method)
 *
 * Assert that passes a truth test.
 *
 *     expect(1).to.satisfy(function(num) { return num > 0; });
 *
 * @name satisfy
 * @param {Function} matcher
 * @api public
 */

Assertion.prototype.satisfy = function (matcher) {
  var obj = flag(this, 'object');
  this.assert(
      matcher(obj)
    , 'expected #{this} to satisfy ' + util.inspect(matcher)
    , 'expected #{this} to not satisfy' + util.inspect(matcher)
    , this.negate ? false : true
    , matcher(obj)
  );

  return this;
};

/**
 * ### .closeTo(expected, delta)
 *
 * Assert that actual is equal to +/- delta.
 *
 *     expect(1.5).to.be.closeTo(1, 0.5);
 *
 * @name closeTo
 * @param {Number} expected
 * @param {Number} delta
 * @api public
 */

Assertion.prototype.closeTo = function (expected, delta) {
  var obj = flag(this, 'object');
  this.assert(
      (obj - delta === expected) || (obj + delta === expected)
    , 'expected #{this} to be close to ' + expected + ' +/- ' + delta
    , 'expected #{this} not to be close to ' + expected + ' +/- ' + delta);

  return this;
};

/*!
 * Aliases.
 */

(function alias(name, as){
  Assertion.prototype[as] = Assertion.prototype[name];
  return alias;
})
('equal', 'eq')
('above', 'gt')
('below', 'lt')
('length', 'lengthOf')
('keys', 'key')
('ownProperty', 'haveOwnProperty')
('above', 'greaterThan')
('below', 'lessThan')
('Throw', 'throws')
('Throw', 'throw')
('instanceOf', 'instanceof');

}); // module: assertion.js

require.register("browser/error.js", function(module, exports, require){
/*!
 * chai
 * Copyright(c) 2011-2012 Jake Luer <jake@alogicalparadox.com>
 * MIT Licensed
 */

module.exports = AssertionError;

function AssertionError (options) {
  options = options || {};
  this.message = options.message;
  this.actual = options.actual;
  this.expected = options.expected;
  this.operator = options.operator;

  if (options.stackStartFunction && Error.captureStackTrace) {
    var stackStartFunction = options.stackStartFunction;
    Error.captureStackTrace(this, stackStartFunction);
  }
}

AssertionError.prototype = Object.create(Error.prototype);
AssertionError.prototype.name = 'AssertionError';
AssertionError.prototype.constructor = AssertionError;

AssertionError.prototype.toString = function() {
  return this.message;
};

}); // module: browser/error.js

require.register("chai.js", function(module, exports, require){
/*!
 * chai
 * Copyright(c) 2011-2012 Jake Luer <jake@alogicalparadox.com>
 * MIT Licensed
 */

var used = []
  , exports = module.exports = {};

/*!
 * Chai version
 */

exports.version = '1.0.0-rc3';

/*!
 * Primary `Assertion` prototype
 */

exports.Assertion = require('./assertion');

/*!
 * Assertion Error
 */

exports.AssertionError = require('./browser/error');

/*!
 * Utils for plugins (not exported)
 */

var util = require('./utils');

/**
 * # .use(function)
 *
 * Provides a way to extend the internals of Chai
 *
 * @param {Function}
 * @returns {this} for chaining
 * @api public
 */

exports.use = function (fn) {
  if (!~used.indexOf(fn)) {
    fn(this, util);
    used.push(fn);
  }

  return this;
};

/*!
 * Expect interface
 */

var expect = require('./interface/expect');
exports.use(expect);

/*!
 * Should interface
 */

var should = require('./interface/should');
exports.use(should);

/*!
 * Assert interface
 */

var assert = require('./interface/assert');
exports.use(assert);

}); // module: chai.js

require.register("interface/assert.js", function(module, exports, require){
/*!
 * chai
 * Copyright(c) 2011-2012 Jake Luer <jake@alogicalparadox.com>
 * MIT Licensed
 */


module.exports = function (chai, util) {

  /*!
   * Chai dependencies.
   */

  var Assertion = chai.Assertion
    , flag = util.flag;

  /*!
   * Module export.
   */

  /**
   * ### assert(expressions, errorMessage)
   *
   * Write your own test expressions.
   *
   * @param {Mixed} expression to test for truthiness.
   * @param {String} message to display on error
   * @name assert
   * @api public
   */

  var assert = chai.assert = function (express, errmsg) {
    var test = new Assertion(null);
    test.assert(
        express
      , errmsg
      , '[ negation message unavailable ]'
    );
  };

  /**
   * ### .fail(actual, expect, msg, operator)
   *
   * Throw a failure. Node.js compatible.
   *
   * @name fail
   * @param {*} actual value
   * @param {*} expected value
   * @param {String} message
   * @param {String} operator
   * @api public
   */

  assert.fail = function (actual, expected, message, operator) {
    throw new chai.AssertionError({
        actual: actual
      , expected: expected
      , message: message
      , operator: operator
      , stackStartFunction: assert.fail
    });
  };

  /**
   * ### .ok(object, [message])
   *
   * Assert object is truthy.
   *
   *      assert.ok('everthing', 'everything is ok');
   *      assert.ok(false, 'this will fail');
   *
   * @name ok
   * @param {*} object to test
   * @param {String} message
   * @api public
   */

  assert.ok = function (val, msg) {
    new Assertion(val, msg).is.ok;
  };

  /**
   * ### .equal(actual, expected, [message])
   *
   * Assert non-strict equality (==).
   *
   *      assert.equal(3, 3, 'these numbers are equal');
   *
   * @name equal
   * @param {*} actual
   * @param {*} expected
   * @param {String} message
   * @api public
   */

  assert.equal = function (act, exp, msg) {
    var test = new Assertion(act, msg);

    test.assert(
        exp == flag(test, 'object')
      , 'expected #{this} to equal #{exp}'
      , 'expected #{this} to not equal #{act}'
      , exp
      , act
    );
  };

  /**
   * ### .notEqual(actual, expected, [message])
   *
   * Assert non-strict inequality (!=).
   *
   *      assert.notEqual(3, 4, 'these numbers are not equal');
   *
   * @name notEqual
   * @param {*} actual
   * @param {*} expected
   * @param {String} message
   * @api public
   */

  assert.notEqual = function (act, exp, msg) {
    var test = new Assertion(act, msg);

    test.assert(
        exp != flag(test, 'object')
      , 'expected #{this} to not equal #{exp}'
      , 'expected #{this} to equal #{act}'
      , exp
      , act
    );
  };

  /**
   * ### .strictEqual(actual, expected, [message])
   *
   * Assert strict equality (===).
   *
   *      assert.strictEqual(true, true, 'these booleans are strictly equal');
   *
   * @name strictEqual
   * @param {*} actual
   * @param {*} expected
   * @param {String} message
   * @api public
   */

  assert.strictEqual = function (act, exp, msg) {
    new Assertion(act, msg).to.equal(exp);
  };

  /**
   * ### .notStrictEqual(actual, expected, [message])
   *
   * Assert strict inequality (!==).
   *
   *      assert.notStrictEqual(1, true, 'these booleans are not strictly equal');
   *
   * @name notStrictEqual
   * @param {*} actual
   * @param {*} expected
   * @param {String} message
   * @api public
   */

  assert.notStrictEqual = function (act, exp, msg) {
    new Assertion(act, msg).to.not.equal(exp);
  };

  /**
   * ### .deepEqual(actual, expected, [message])
   *
   * Assert not deep equality.
   *
   *      assert.deepEqual({ tea: 'green' }, { tea: 'green' });
   *
   * @name deepEqual
   * @param {*} actual
   * @param {*} expected
   * @param {String} message
   * @api public
   */

  assert.deepEqual = function (act, exp, msg) {
    new Assertion(act, msg).to.eql(exp);
  };

  /**
   * ### .notDeepEqual(actual, expected, [message])
   *
   * Assert not deep equality.
   *
   *      assert.notDeepEqual({ tea: 'green' }, { tea: 'jasmine' });
   *
   * @name notDeepEqual
   * @param {*} actual
   * @param {*} expected
   * @param {String} message
   * @api public
   */

  assert.notDeepEqual = function (act, exp, msg) {
    new Assertion(act, msg).to.not.eql(exp);
  };

  /**
   * ### .isTrue(value, [message])
   *
   * Assert `value` is true.
   *
   *      var tea_served = true;
   *      assert.isTrue(tea_served, 'the tea has been served');
   *
   * @name isTrue
   * @param {Boolean} value
   * @param {String} message
   * @api public
   */

  assert.isTrue = function (val, msg) {
    new Assertion(val, msg).is['true'];
  };

  /**
   * ### .isFalse(value, [message])
   *
   * Assert `value` is false.
   *
   *      var tea_served = false;
   *      assert.isFalse(tea_served, 'no tea yet? hmm...');
   *
   * @name isFalse
   * @param {Boolean} value
   * @param {String} message
   * @api public
   */

  assert.isFalse = function (val, msg) {
    new Assertion(val, msg).is['false'];
  };

  /**
   * ### .isNull(value, [message])
   *
   * Assert `value` is null.
   *
   *      assert.isNull(err, 'no errors');
   *
   * @name isNull
   * @param {*} value
   * @param {String} message
   * @api public
   */

  assert.isNull = function (val, msg) {
    new Assertion(val, msg).to.equal(null);
  };

  /**
   * ### .isNotNull(value, [message])
   *
   * Assert `value` is not null.
   *
   *      var tea = 'tasty chai';
   *      assert.isNotNull(tea, 'great, time for tea!');
   *
   * @name isNotNull
   * @param {*} value
   * @param {String} message
   * @api public
   */

  assert.isNotNull = function (val, msg) {
    new Assertion(val, msg).to.not.equal(null);
  };

  /**
   * ### .isUndefined(value, [message])
   *
   * Assert `value` is undefined.
   *
   *      assert.isUndefined(tea, 'no tea defined');
   *
   * @name isUndefined
   * @param {*} value
   * @param {String} message
   * @api public
   */

  assert.isUndefined = function (val, msg) {
    new Assertion(val, msg).to.equal(undefined);
  };

  /**
   * ### .isDefined(value, [message])
   *
   * Assert `value` is not undefined.
   *
   *      var tea = 'cup of chai';
   *      assert.isDefined(tea, 'no tea defined');
   *
   * @name isUndefined
   * @param {*} value
   * @param {String} message
   * @api public
   */

  assert.isDefined = function (val, msg) {
    new Assertion(val, msg).to.not.equal(undefined);
  };

  /**
   * ### .isFunction(value, [message])
   *
   * Assert `value` is a function.
   *
   *      var serve_tea = function () { return 'cup of tea'; };
   *      assert.isFunction(serve_tea, 'great, we can have tea now');
   *
   * @name isFunction
   * @param {Function} value
   * @param {String} message
   * @api public
   */

  assert.isFunction = function (val, msg) {
    new Assertion(val, msg).to.be.a('function');
  };

  /**
   * ### .isNotFunction(value, [message])
   *
   * Assert `value` is NOT a function.
   *
   *      var serve_tea = [ 'heat', 'pour', 'sip' ];
   *      assert.isNotFunction(serve_tea, 'great, we can have tea now');
   *
   * @name isNotFunction
   * @param {Mixed} value
   * @param {String} message
   * @api public
   */

  assert.isNotFunction = function (val, msg) {
    new Assertion(val, msg).to.not.be.a('function');
  };

  /**
   * ### .isObject(value, [message])
   *
   * Assert `value` is an object.
   *
   *      var selection = { name: 'Chai', serve: 'with spices' };
   *      assert.isObject(selection, 'tea selection is an object');
   *
   * @name isObject
   * @param {Object} value
   * @param {String} message
   * @api public
   */

  assert.isObject = function (val, msg) {
    new Assertion(val, msg).to.be.a('object');
  };

  /**
   * ### .isNotObject(value, [message])
   *
   * Assert `value` is NOT an object.
   *
   *      var selection = 'chai'
   *      assert.isObject(selection, 'tea selection is not an object');
   *
   * @name isNotObject
   * @param {Mixed} value
   * @param {String} message
   * @api public
   */

  assert.isNotObject = function (val, msg) {
    new Assertion(val, msg).to.not.be.a('object');
  };

  /**
   * ### .isArray(value, [message])
   *
   * Assert `value` is an instance of Array.
   *
   *      var menu = [ 'green', 'chai', 'oolong' ];
   *      assert.isArray(menu, 'what kind of tea do we want?');
   *
   * @name isArray
   * @param {Mixed} value
   * @param {String} message
   * @api public
   */

  assert.isArray = function (val, msg) {
    new Assertion(val, msg).to.be.instanceOf(Array);
  };

  /**
   * ### .isArray(value, [message])
   *
   * Assert `value` is NOT an instance of Array.
   *
   *      var menu = 'green|chai|oolong';
   *      assert.isNotArray(menu, 'what kind of tea do we want?');
   *
   * @name isNotArray
   * @param {Mixed} value
   * @param {String} message
   * @api public
   */

  assert.isNotArray = function (val, msg) {
    new Assertion(val, msg).to.not.be.instanceOf(Array);
  };

  /**
   * ### .isString(value, [message])
   *
   * Assert `value` is a string.
   *
   *      var teaorder = 'chai';
   *      assert.isString(tea_order, 'order placed');
   *
   * @name isString
   * @param {String} value
   * @param {String} message
   * @api public
   */

  assert.isString = function (val, msg) {
    new Assertion(val, msg).to.be.a('string');
  };

  /**
   * ### .isNotString(value, [message])
   *
   * Assert `value` is NOT a string.
   *
   *      var teaorder = 4;
   *      assert.isNotString(tea_order, 'order placed');
   *
   * @name isNotString
   * @param {Mixed} value
   * @param {String} message
   * @api public
   */

  assert.isNotString = function (val, msg) {
    new Assertion(val, msg).to.not.be.a('string');
  };

  /**
   * ### .isNumber(value, [message])
   *
   * Assert `value` is a number
   *
   *      var cups = 2;
   *      assert.isNumber(cups, 'how many cups');
   *
   * @name isNumber
   * @param {Number} value
   * @param {String} message
   * @api public
   */

  assert.isNumber = function (val, msg) {
    new Assertion(val, msg).to.be.a('number');
  };

  /**
   * ### .isNotNumber(value, [message])
   *
   * Assert `value` NOT is a number
   *
   *      var cups = '2 cups please';
   *      assert.isNotNumber(cups, 'how many cups');
   *
   * @name isNotNumber
   * @param {Mixed} value
   * @param {String} message
   * @api public
   */

  assert.isNotNumber = function (val, msg) {
    new Assertion(val, msg).to.not.be.a('number');
  };

  /**
   * ### .isBoolean(value, [message])
   *
   * Assert `value` is a boolean
   *
   *      var teaready = true
   *        , teaserved = false;
   *
   *      assert.isBoolean(tea_ready, 'is the tea ready');
   *      assert.isBoolean(tea_served, 'has tea been served');
   *
   * @name isBoolean
   * @param {Mixed} value
   * @param {String} message
   * @api public
   */

  assert.isBoolean = function (val, msg) {
    new Assertion(val, msg).to.be.a('boolean');
  };

  /**
   * ### .isNotBoolean(value, [message])
   *
   * Assert `value` is NOT a boolean
   *
   *      var teaready = 'yep'
   *        , teaserved = 'nope';
   *
   *      assert.isNotBoolean(tea_ready, 'is the tea ready');
   *      assert.isNotBoolean(tea_served, 'has tea been served');
   *
   * @name isNotBoolean
   * @param {Mixed} value
   * @param {String} message
   * @api public
   */

  assert.isNotBoolean = function (val, msg) {
    new Assertion(val, msg).to.not.be.a('boolean');
  };

  /**
   * ### .typeOf(value, name, [message])
   *
   * Assert typeof `value` is `name`.
   *
   *      assert.typeOf('tea', 'string', 'we have a string');
   *
   * @name typeOf
   * @param {Mixed} value
   * @param {String} typeof name
   * @param {String} message
   * @api public
   */

  assert.typeOf = function (val, type, msg) {
    new Assertion(val, msg).to.be.a(type);
  };

  /**
   * ### .notTypeOf(value, name, [message])
   *
   * Assert typeof `value` is NOT `name`.
   *
   *      assert.notTypeOf('tea', 'string', 'we have a string');
   *
   * @name notTypeOf
   * @param {Mixed} value
   * @param {String} typeof name
   * @param {String} message
   * @api public
   */

  assert.notTypeOf = function (val, type, msg) {
    new Assertion(val, msg).to.not.be.a(type);
  };

  /**
   * ### .instanceOf(object, constructor, [message])
   *
   * Assert `value` is instanceof `constructor`.
   *
   *      var Tea = function (name) { this.name = name; }
   *        , Chai = new Tea('chai');
   *
   *      assert.instanceOf(Chai, Tea, 'chai is an instance of tea');
   *
   * @name instanceOf
   * @param {Object} object
   * @param {Constructor} constructor
   * @param {String} message
   * @api public
   */

  assert.instanceOf = function (val, type, msg) {
    new Assertion(val, msg).to.be.instanceOf(type);
  };

  /**
   * ### .notInstanceOf(object, constructor, [message])
   *
   * Assert `value` is NOT instanceof `constructor`.
   *
   *      var Tea = function (name) { this.name = name; }
   *        , Chai = new String('chai');
   *
   *      assert.notInstanceOf(Chai, Tea, 'chai is an instance of tea');
   *
   * @name notInstanceOf
   * @param {Object} object
   * @param {Constructor} constructor
   * @param {String} message
   * @api public
   */

  assert.notInstanceOf = function (val, type, msg) {
    new Assertion(val, msg).to.not.be.instanceOf(type);
  };

  /**
   * ### .include(value, includes, [message])
   *
   * Assert the inclusion of an object in another. Works
   * for strings and arrays.
   *
   *      assert.include('foobar', 'bar', 'foobar contains string `var`);
   *      assert.include([ 1, 2, 3], 3, 'array contains value);
   *
   * @name include
   * @param {Array|String} value
   * @param {*} includes
   * @param {String} message
   * @api public
   */

  assert.include = function (exp, inc, msg) {
    var obj = new Assertion(exp, msg);

    if (Array.isArray(exp)) {
      obj.to.include(inc);
    } else if ('string' === typeof exp) {
      obj.to.contain.string(inc);
    }
  };

  /**
   * ### .match(value, regex, [message])
   *
   * Assert that `value` matches regular expression.
   *
   *      assert.match('foobar', /^foo/, 'Regexp matches');
   *
   * @name match
   * @param {*} value
   * @param {RegExp} RegularExpression
   * @param {String} message
   * @api public
   */

  assert.match = function (exp, re, msg) {
    new Assertion(exp, msg).to.match(re);
  };

  /**
   * ### .notMatch(value, regex, [message])
   *
   * Assert that `value` does not match regular expression.
   *
   *      assert.notMatch('foobar', /^foo/, 'Regexp matches');
   *
   * @name notMatch
   * @param {*} value
   * @param {RegExp} RegularExpression
   * @param {String} message
   * @api public
   */

  assert.notMatch = function (exp, re, msg) {
    new Assertion(exp, msg).to.not.match(re);
  };

  /**
   * ### .property(object, property, [message])
   *
   * Assert that `object` has property. Can use dot-notation for deep reference.
   *
   *      assert.property({ tea: { green: 'matcha' }}, 'tea.green');
   *
   * @name property
   * @param {Object} object
   * @param {String} Property address
   * @param {String} message
   * @api public
   */

  assert.property = function (obj, prop, msg) {
    new Assertion(obj, msg).to.have.property(prop);
  };

  /**
   * ### .notOwnProperty(object, property, [message])
   *
   * Assert that `object` does not have property. Can use dot-notation for deep reference.
   *
   *      assert.ownProperty({ tea: { green: 'matcha' }}, 'tea.oolong');
   *
   * @name notOwnProperty
   * @param {Object} object
   * @param {String} property address
   * @param {String} message
   * @api public
   */

  assert.notProperty = function (obj, prop, msg) {
    new Assertion(obj, msg).to.not.have.property(prop);
  };

  /**
   * ### .propertyVal(object, property, value, [message])
   *
   * Assert that `object` has property with `value`.
   * Can use dot-notation for deep reference.
   *
   *      assert.propertyVal({ tea: { green: 'matcha' }}, 'tea.green', 'matcha');
   *
   * @name propertyVal
   * @param {Object} object
   * @param {String} property address
   * @param {Mixed} value
   * @param {String} message
   * @api public
   */

  assert.propertyVal = function (obj, prop, val, msg) {
    new Assertion(obj, msg).to.have.property(prop, val);
  };

  /**
   * ### .propertyNotVal(object, property, value, [message])
   *
   * Assert that `object` has property but `value`
   * does not equal  `value`. Can use dot-notation for deep reference.
   *
   *      assert.propertyNotVal({ tea: { green: 'matcha' }}, 'tea.green', 'konacha');
   *
   * @name propertyNotVal
   * @param {Object} object
   * @param {String} property address
   * @param {Mixed} value
   * @param {String} message
   * @api public
   */
  assert.propertyNotVal = function (obj, prop, val, msg) {
    new Assertion(obj, msg).to.not.have.property(prop, val);
  };

  /**
   * ### .lengthOf(object, length, [message])
   *
   * Assert that object has expected length.
   *
   *      assert.lengthOf([1,2,3], 3, 'Array has length of 3');
   *      assert.lengthOf('foobar', 5, 'String has length of 6');
   *
   * @name length
   * @param {*} value
   * @param {Number} length
   * @param {String} message
   * @api public
   */

  assert.lengthOf = function (exp, len, msg) {
    new Assertion(exp, msg).to.have.length(len);
  };

  /**
   * ### .throws(function, [constructor/regexp], [message])
   *
   * Assert that a function will throw a specific
   * type of error.
   *
   *      assert.throw(fn, ReferenceError, 'function throw reference error');
   *
   * @name throws
   * @alias throw
   * @param {Function} function to test
   * @param {ErrorConstructor} constructor
   * @param {String} message
   * @see https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Error#Error_types
   * @api public
   */

  assert.throws = function (fn, type, msg) {
    if ('string' === typeof type) {
      msg = type;
      type = null;
    }

    new Assertion(fn, msg).to.Throw(type);
  };

  /**
   * ### .doesNotThrow(function, [constructor/regexp], [message])
   *
   * Assert that a function will throw a specific
   * type of error.
   *
   *      var fn = function (err) { if (err) throw Error(err) };
   *      assert.doesNotThrow(fn, Error, 'function throw reference error');
   *
   * @name doesNotThrow
   * @param {Function} function to test
   * @param {ErrorConstructor} constructor
   * @param {String} message
   * @see https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Error#Error_types
   * @api public
   */

  assert.doesNotThrow = function (fn, type, msg) {
    if ('string' === typeof type) {
      msg = type;
      type = null;
    }

    new Assertion(fn, msg).to.not.Throw(type);
  };

  /**
   * ### .operator(val, operator, val2, [message])
   *
   * Compare two values using operator.
   *
   *      assert.operator(1, '<', 2, 'everything is ok');
   *      assert.operator(1, '>', 2, 'this will fail');
   *
   * @name operator
   * @param {*} object to test
   * @param {String} operator
   * @param {*} second object
   * @param {String} message
   * @api public
   */

  assert.operator = function (val, operator, val2, msg) {
    if (!~['==', '===', '>', '>=', '<', '<=', '!=', '!=='].indexOf(operator)) {
      throw new Error('Invalid operator "' + operator + '"');
    }
    var test = new Assertion(eval(val + operator + val2), msg);
    test.assert(
        true === flag(test, 'object')
      , 'expected ' + util.inspect(val) + ' to be ' + operator + ' ' + util.inspect(val2)
      , 'expected ' + util.inspect(val) + ' to not be ' + operator + ' ' + util.inspect(val2) );
  };

  /*!
   * Undocumented / untested
   */

  assert.ifError = function (val, msg) {
    new Assertion(val, msg).to.not.be.ok;
  };

  /*!
   * Aliases.
   */

  (function alias(name, as){
    assert[as] = assert[name];
    return alias;
  })
  ('throws', 'throw');
};

}); // module: interface/assert.js

require.register("interface/expect.js", function(module, exports, require){
/*!
 * chai
 * Copyright(c) 2011-2012 Jake Luer <jake@alogicalparadox.com>
 * MIT Licensed
 */

module.exports = function (chai, util) {
  chai.expect = function (val, message) {
    return new chai.Assertion(val, message);
  };
};


}); // module: interface/expect.js

require.register("interface/should.js", function(module, exports, require){
/*!
 * chai
 * Copyright(c) 2011-2012 Jake Luer <jake@alogicalparadox.com>
 * MIT Licensed
 */

module.exports = function (chai, util) {
  var Assertion = chai.Assertion;

  function loadShould () {
    // modify Object.prototype to have `should`
    Object.defineProperty(Object.prototype, 'should',
      { set: function () {}
      , get: function(){
          if (this instanceof String || this instanceof Number) {
            return new Assertion(this.constructor(this));
          } else if (this instanceof Boolean) {
            return new Assertion(this == true);
          }
          return new Assertion(this);
        }
      , configurable: true
    });

    var should = {};

    should.equal = function (val1, val2) {
      new Assertion(val1).to.equal(val2);
    };

    should.Throw = function (fn, errt, errs) {
      new Assertion(fn).to.Throw(errt, errs);
    };

    should.exist = function (val) {
      new Assertion(val).to.exist;
    }

    // negation
    should.not = {}

    should.not.equal = function (val1, val2) {
      new Assertion(val1).to.not.equal(val2);
    };

    should.not.Throw = function (fn, errt, errs) {
      new Assertion(fn).to.not.Throw(errt, errs);
    };

    should.not.exist = function (val) {
      new Assertion(val).to.not.exist;
    }

    should['throw'] = should['Throw'];
    should.not['throw'] = should.not['Throw'];

    return should;
  };

  chai.should = loadShould;
  chai.Should = loadShould;
};

}); // module: interface/should.js

require.register("utils/addMethod.js", function(module, exports, require){
/*!
 * Chai - addMethod utility
 * Copyright(c) 2012 Jake Luer <jake@alogicalparadox.com>
 * MIT Licensed
 */

/**
 * ### addMethod (ctx, name, method)
 *
 * Adds a method to the prototype of an object.
 *
 *     utils.addMethod(chai.Assertion.prototype, 'foo', function (str) {
 *       var obj = utils.flag(this, 'object');
 *       new chai.Assertion(obj).to.be.equal(str);
 *     });
 *
 * Can also be accessed directly from `chai.Assertion`.
 *
 *     chai.Assertion.addMethod('foo', fn);
 *
 * Then can be used as any other assertion.
 *
 *     expect(fooStr).to.be.foo('bar');
 *
 * @param {Object} ctx object to which the method is added
 * @param {String} name of method to add
 * @param {Function} method function to be used for name
 * @name addMethod
 * @api public
 */

module.exports = function (ctx, name, method) {
  ctx[name] = function () {
    var result = method.apply(this, arguments);
    return result === undefined ? this : result;
  };
};

}); // module: utils/addMethod.js

require.register("utils/addProperty.js", function(module, exports, require){
/*!
 * Chai - addProperty utility
 * Copyright(c) 2012 Jake Luer <jake@alogicalparadox.com>
 * MIT Licensed
 */

/**
 * ### addProperty (ctx, name, getter)
 *
 * Adds a property to the prototype of an object.
 *
 *     utils.addProperty(chai.Assertion.prototype, 'foo', function () {
 *       var obj = utils.flag(this, 'object');
 *       new chai.Assertion(obj).to.be.instanceof(Foo);
 *     });
 *
 * Can also be accessed directly from `chai.Assertion`.
 *
 *     chai.Assertion.addProperty('foo', fn);
 *
 * Then can be used as any other assertion.
 *
 *     expect(myFoo).to.be.foo;
 *
 * @param {Object} ctx object to which the property is added
 * @param {String} name of property to add
 * @param {Function} getter function to be used for name
 * @name addProperty
 * @api public
 */

module.exports = function (ctx, name, getter) {
  Object.defineProperty(ctx, name,
    { get: function () {
        var result = getter.call(this);
        return result === undefined ? this : result;
      }
    , configurable: true
  });
};

}); // module: utils/addProperty.js

require.register("utils/eql.js", function(module, exports, require){
// This is directly from Node.js assert
// https://github.com/joyent/node/blob/f8c335d0caf47f16d31413f89aa28eda3878e3aa/lib/assert.js


module.exports = _deepEqual;

// For browser implementation
if (!Buffer) {
  var Buffer = {
    isBuffer: function () {
      return false;
    }
  };
}

function _deepEqual(actual, expected) {
  // 7.1. All identical values are equivalent, as determined by ===.
  if (actual === expected) {
    return true;

  } else if (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 _deepEqual(a, b);
  }
  try {
    var ka = Object.keys(a),
        kb = Object.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 (!_deepEqual(a[key], b[key])) return false;
  }
  return true;
}
}); // module: utils/eql.js

require.register("utils/flag.js", function(module, exports, require){
/*!
 * Chai - flag utility
 * Copyright(c) 2012 Jake Luer <jake@alogicalparadox.com>
 * MIT Licensed
 */

/**
 * ### flag(object ,key, [value])
 *
 * Get or set a flag value on an object. If a
 * value is provided it will be set, else it will
 * return the currently set value or `undefined` if
 * the value is not set.
 *
 *     utils.flag(this, 'foo', 'bar'); // setter
 *     utils.flag(this, 'foo'); // getter, returns `bar`
 *
 * @param {Object} object (constructed Assertion
 * @param {String} key
 * @param {Mixed} value (optional)
 * @name flag
 * @api private
 */

module.exports = function (obj, key, value) {
  var flags = obj.__flags || (obj.__flags = Object.create(null));
  if (arguments.length === 3) {
    flags[key] = value;
  } else {
    return flags[key];
  }
};

}); // module: utils/flag.js

require.register("utils/getActual.js", function(module, exports, require){
/*!
 * Chai - getActual utility
 * Copyright(c) 2012 Jake Luer <jake@alogicalparadox.com>
 * MIT Licensed
 */

/**
 * # getActual(object, [actual])
 *
 * Returns the `actual` value for an Assertion
 *
 * @param {Object} object (constructed Assertion)
 * @param {Arguments} chai.Assertion.prototype.assert arguments
 */

module.exports = function (obj, args) {
  var actual = args[4];
  return 'undefined' !== actual ? actual : obj.obj;
};

}); // module: utils/getActual.js

require.register("utils/getMessage.js", function(module, exports, require){
/*!
 * Chai - message composition utility
 * Copyright(c) 2012 Jake Luer <jake@alogicalparadox.com>
 * MIT Licensed
 */

/*!
 * Module dependancies
 */

var flag = require('./flag')
  , getActual = require('./getActual')
  , inspect = require('./inspect');

/**
 * # getMessage(object, message, negateMessage)
 *
 * Construct the error message based on flags
 * and template tags. Template tags will return
 * a stringified inspection of the object referenced.
 *
 * Messsage template tags:
 * - `#{this}` current asserted object
 * - `#{act}` actual value
 * - `#{exp}` expected value
 *
 * @param {Object} object (constructed Assertion)
 * @param {Arguments} chai.Assertion.prototype.assert arguments
 */

module.exports = function (obj, args) {
  var negate = flag(obj, 'negate')
    , val = flag(obj, 'object')
    , expected = args[3]
    , actual = getActual(obj, args)
    , msg = negate ? args[2] : args[1]
    , flagMsg = flag(obj, 'message');

  msg = msg || '';
  msg = msg
    .replace(/#{this}/g, inspect(val))
    .replace(/#{act}/g, inspect(actual))
    .replace(/#{exp}/g, inspect(expected));

  return flagMsg ? flagMsg + ': ' + msg : msg;
};

}); // module: utils/getMessage.js

require.register("utils/getName.js", function(module, exports, require){
/*!
 * Chai - getName utility
 * Copyright(c) 2012 Jake Luer <jake@alogicalparadox.com>
 * MIT Licensed
 */

/**
 * # getName(func)
 *
 * Gets the name of a function, in a cross-browser way.
 *
 * @param {Function} a function (usually a constructor)
 */

module.exports = function (func) {
  if (func.name) return func.name;

  var match = /^\s?function ([^(]*)\(/.exec(func);
  return match && match[1] ? match[1] : "";
};

}); // module: utils/getName.js

require.register("utils/getPathValue.js", function(module, exports, require){
/*!
 * Chai - getPathValue utility
 * Copyright(c) 2012 Jake Luer <jake@alogicalparadox.com>
 * @see https://github.com/logicalparadox/filtr
 * MIT Licensed
 */

/**
 * ### .getPathValue(path, object)
 *
 * This allows the retrieval of values in an
 * object given a string path.
 *
 *     var obj = {
 *         prop1: {
 *             arr: ['a', 'b', 'c']
 *           , str: 'Hello'
 *         }
 *       , prop2: {
 *             arr: [ { nested: 'Universe' } ]
 *           , str: 'Hello again!'
 *         }
 *     }
 *
 * The following would be the results.
 *
 *     getPathValue('prop1.str', obj); // Hello
 *     getPathValue('prop1.att[2]', obj); // b
 *     getPathValue('prop2.arr[0].nested', obj); // Universe
 *
 * @param {String} path
 * @param {Object} object
 * @returns {Object} value or `undefined`
 * @name getPathValue
 * @api public
 */

var getPathValue = module.exports = function (path, obj) {
  var parsed = parsePath(path);
  return _getPathValue(parsed, obj);
};

/*!
 * ## parsePath(path)
 *
 * Helper function used to parse string object
 * paths. Use in conjunction with `_getPathValue`.
 *
 *      var parsed = parsePath('myobject.property.subprop');
 *
 * ### Paths:
 *
 * * Can be as near infinitely deep and nested
 * * Arrays are also valid using the formal `myobject.document[3].property`.
 *
 * @param {String} path
 * @returns {Object} parsed
 * @api private
 */

function parsePath (path) {
  var parts = path.split('.').filter(Boolean);
  return parts.map(function (value) {
    var re = /([A-Za-z0-9]+)\[(\d+)\]$/
      , mArr = re.exec(value)
      , val;
    if (mArr) val = { p: mArr[1], i: parseFloat(mArr[2]) };
    return val || value;
  });
};

/*!
 * ## _getPathValue(parsed, obj)
 *
 * Helper companion function for `.parsePath` that returns
 * the value located at the parsed address.
 *
 *      var value = getPathValue(parsed, obj);
 *
 * @param {Object} parsed definition from `parsePath`.
 * @param {Object} object to search against
 * @returns {Object|Undefined} value
 * @api private
 */

function _getPathValue (parsed, obj) {
  var tmp = obj
    , res;
  for (var i = 0, l = parsed.length; i < l; i++) {
    var part = parsed[i];
    if (tmp) {
      if ('object' === typeof part && tmp[part.p]) {
        tmp = tmp[part.p][part.i];
      } else {
        tmp = tmp[part];
      }
      if (i == (l - 1)) res = tmp;
    } else {
      res = undefined;
    }
  }
  return res;
};

}); // module: utils/getPathValue.js

require.register("utils/index.js", function(module, exports, require){
/*!
 * chai
 * Copyright(c) 2011 Jake Luer <jake@alogicalparadox.com>
 * MIT Licensed
 */

/*!
 * Main exports
 */

var exports = module.exports = {};

/*!
 * test utility
 */

exports.test = require('./test');

/*!
 * message utility
 */

exports.getMessage = require('./getMessage');

/*!
 * actual utility
 */

exports.getActual = require('./getActual');

/*!
 * Inspect util
 */

exports.inspect = require('./inspect');

/*!
 * Flag utility
 */

exports.flag = require('./flag');

/*!
 * Deep equal utility
 */

exports.eql = require('./eql');

/*!
 * Deep path value
 */

exports.getPathValue = require('./getPathValue');

/*!
 * Function name
 */

exports.getName = require('./getName');

/*!
 * add Property
 */

exports.addProperty = require('./addProperty');

/*!
 * add Method
 */

exports.addMethod = require('./addMethod');

/*!
 * overwrite Property
 */

exports.overwriteProperty = require('./overwriteProperty');

/*!
 * overwrite Method
 */

exports.overwriteMethod = require('./overwriteMethod');

}); // module: utils/index.js

require.register("utils/inspect.js", function(module, exports, require){
// This is (almost) directly from Node.js utils
// https://github.com/joyent/node/blob/f8c335d0caf47f16d31413f89aa28eda3878e3aa/lib/util.js

var getName = require('./getName');

module.exports = inspect;

/**
 * Echos the value of a value. Trys to print the value out
 * in the best way possible given the different types.
 *
 * @param {Object} obj The object to print out.
 * @param {Boolean} showHidden Flag that shows hidden (not enumerable)
 *    properties of objects.
 * @param {Number} depth Depth in which to descend in object. Default is 2.
 * @param {Boolean} colors Flag to turn on ANSI escape codes to color the
 *    output. Default is false (no coloring).
 */
function inspect(obj, showHidden, depth, colors) {
  var ctx = {
    showHidden: showHidden,
    seen: [],
    stylize: function (str) { return str; }
  };
  return formatValue(ctx, obj, (typeof depth === 'undefined' ? 2 : depth));
}

function formatValue(ctx, 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.inspect !== exports.inspect &&
      // 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
  var primitive = formatPrimitive(ctx, value);
  if (primitive) {
    return primitive;
  }

  // Look up the keys of the object.
  var visibleKeys = Object.keys(value);
  var keys = ctx.showHidden ? Object.getOwnPropertyNames(value) : visibleKeys;

  // Some type of object without properties can be shortcutted.
  // In IE, errors have a single `stack` property, or if they are vanilla `Error`,
  // a `stack` plus `description` property; ignore those for consistency.
  if (keys.length === 0 || (isError(value) && (
      (keys.length === 1 && keys[0] === 'stack') ||
      (keys.length === 2 && keys[0] === 'description' && keys[1] === 'stack')
     ))) {
    if (typeof value === 'function') {
      var name = getName(value);
      var nameSuffix = name ? ': ' + name : '';
      return ctx.stylize('[Function' + nameSuffix + ']', 'special');
    }
    if (isRegExp(value)) {
      return ctx.stylize(RegExp.prototype.toString.call(value), 'regexp');
    }
    if (isDate(value)) {
      return ctx.stylize(Date.prototype.toUTCString.call(value), 'date');
    }
    if (isError(value)) {
      return formatError(value);
    }
  }

  var base = '', array = false, braces = ['{', '}'];

  // Make Array say that they are Array
  if (isArray(value)) {
    array = true;
    braces = ['[', ']'];
  }

  // Make functions say that they are functions
  if (typeof value === 'function') {
    var n = value.name ? ': ' + value.name : '';
    base = ' [Function' + n + ']';
  }

  // Make RegExps say that they are RegExps
  if (isRegExp(value)) {
    base = ' ' + RegExp.prototype.toString.call(value);
  }

  // Make dates with properties first say the date
  if (isDate(value)) {
    base = ' ' + Date.prototype.toUTCString.call(value);
  }

  // Make error with message first say the error
  if (isError(value)) {
    base = ' ' + formatError(value);
  }

  if (keys.length === 0 && (!array || value.length == 0)) {
    return braces[0] + base + braces[1];
  }

  if (recurseTimes < 0) {
    if (isRegExp(value)) {
      return ctx.stylize(RegExp.prototype.toString.call(value), 'regexp');
    } else {
      return ctx.stylize('[Object]', 'special');
    }
  }

  ctx.seen.push(value);

  var output;
  if (array) {
    output = formatArray(ctx, value, recurseTimes, visibleKeys, keys);
  } else {
    output = keys.map(function(key) {
      return formatProperty(ctx, value, recurseTimes, visibleKeys, key, array);
    });
  }

  ctx.seen.pop();

  return reduceToSingleString(output, base, braces);
}


function formatPrimitive(ctx, value) {
  switch (typeof value) {
    case 'undefined':
      return ctx.stylize('undefined', 'undefined');

    case 'string':
      var simple = '\'' + JSON.stringify(value).replace(/^"|"$/g, '')
                                               .replace(/'/g, "\\'")
                                               .replace(/\\"/g, '"') + '\'';
      return ctx.stylize(simple, 'string');

    case 'number':
      return ctx.stylize('' + value, 'number');

    case 'boolean':
      return ctx.stylize('' + value, 'boolean');
  }
  // For some reason typeof null is "object", so special case here.
  if (value === null) {
    return ctx.stylize('null', 'null');
  }
}


function formatError(value) {
  return '[' + Error.prototype.toString.call(value) + ']';
}


function formatArray(ctx, value, recurseTimes, visibleKeys, keys) {
  var output = [];
  for (var i = 0, l = value.length; i < l; ++i) {
    if (Object.prototype.hasOwnProperty.call(value, String(i))) {
      output.push(formatProperty(ctx, value, recurseTimes, visibleKeys,
          String(i), true));
    } else {
      output.push('');
    }
  }
  keys.forEach(function(key) {
    if (!key.match(/^\d+$/)) {
      output.push(formatProperty(ctx, value, recurseTimes, visibleKeys,
          key, true));
    }
  });
  return output;
}


function formatProperty(ctx, value, recurseTimes, visibleKeys, key, array) {
  var name, str;
  if (value.__lookupGetter__) {
    if (value.__lookupGetter__(key)) {
      if (value.__lookupSetter__(key)) {
        str = ctx.stylize('[Getter/Setter]', 'special');
      } else {
        str = ctx.stylize('[Getter]', 'special');
      }
    } else {
      if (value.__lookupSetter__(key)) {
        str = ctx.stylize('[Setter]', 'special');
      }
    }
  }
  if (visibleKeys.indexOf(key) < 0) {
    name = '[' + key + ']';
  }
  if (!str) {
    if (ctx.seen.indexOf(value[key]) < 0) {
      if (recurseTimes === null) {
        str = formatValue(ctx, value[key], null);
      } else {
        str = formatValue(ctx, value[key], recurseTimes - 1);
      }
      if (str.indexOf('\n') > -1) {
        if (array) {
          str = str.split('\n').map(function(line) {
            return '  ' + line;
          }).join('\n').substr(2);
        } else {
          str = '\n' + str.split('\n').map(function(line) {
            return '   ' + line;
          }).join('\n');
        }
      }
    } else {
      str = ctx.stylize('[Circular]', 'special');
    }
  }
  if (typeof name === 'undefined') {
    if (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 = ctx.stylize(name, 'name');
    } else {
      name = name.replace(/'/g, "\\'")
                 .replace(/\\"/g, '"')
                 .replace(/(^"|"$)/g, "'");
      name = ctx.stylize(name, 'string');
    }
  }

  return name + ': ' + str;
}


function reduceToSingleString(output, base, braces) {
  var numLinesEst = 0;
  var length = output.reduce(function(prev, cur) {
    numLinesEst++;
    if (cur.indexOf('\n') >= 0) numLinesEst++;
    return prev + cur.length + 1;
  }, 0);

  if (length > 60) {
    return braces[0] +
           (base === '' ? '' : base + '\n ') +
           ' ' +
           output.join(',\n  ') +
           ' ' +
           braces[1];
  }

  return braces[0] + base + ' ' + output.join(', ') + ' ' + braces[1];
}

function isArray(ar) {
  return Array.isArray(ar) ||
         (typeof ar === 'object' && objectToString(ar) === '[object Array]');
}

function isRegExp(re) {
  return typeof re === 'object' && objectToString(re) === '[object RegExp]';
}

function isDate(d) {
  return typeof d === 'object' && objectToString(d) === '[object Date]';
}

function isError(e) {
  return typeof e === 'object' && objectToString(e) === '[object Error]';
}

function objectToString(o) {
  return Object.prototype.toString.call(o);
}
}); // module: utils/inspect.js

require.register("utils/overwriteMethod.js", function(module, exports, require){
/*!
 * Chai - overwriteMethod utility
 * Copyright(c) 2012 Jake Luer <jake@alogicalparadox.com>
 * MIT Licensed
 */

/**
 * ### overwriteMethod (ctx, name, fn)
 *
 * Overwites an already existing method and provides
 * access to previous function. Must return function
 * to be used for name.
 *
 *     utils.overwriteMethod(chai.Assertion.prototype, 'equal', function (_super) {
 *       return function (str) {
 *         var obj = utils.flag(this, 'object');
 *         if (obj instanceof Foo) {
 *           new chai.Assertion(obj.value).to.equal(str);
 *         } else {
 *           _super.apply(this, arguments);
 *         }
 *       }
 *     });
 *
 * Can also be accessed directly from `chai.Assertion`.
 *
 *     chai.Assertion.overwriteMethod('foo', fn);
 *
 * Then can be used as any other assertion.
 *
 *     expect(myFoo).to.equal('bar');
 *
 * @param {Object} ctx object whose method is to be overwritten
 * @param {String} name of method to overwrite
 * @param {Function} method function that returns a function to be used for name
 * @name overwriteMethod
 * @api public
 */

module.exports = function (ctx, name, method) {
  var _method = ctx[name]
    , _super = function () { return this; };

  if (_method && 'function' === typeof _method)
    _super = _method;

  ctx[name] = function () {
    var result = method(_super).apply(this, arguments);
    return result === undefined ? this : result;
  }
};

}); // module: utils/overwriteMethod.js

require.register("utils/overwriteProperty.js", function(module, exports, require){
/*!
 * Chai - overwriteProperty utility
 * Copyright(c) 2012 Jake Luer <jake@alogicalparadox.com>
 * MIT Licensed
 */

/**
 * ### overwriteProperty (ctx, name, fn)
 *
 * Overwites an already existing property getter and provides
 * access to previous value. Must return function to use as getter.
 *
 *     utils.overwriteProperty(chai.Assertion.prototype, 'ok', function (_super) {
 *       return function () {
 *         var obj = utils.flag(this, 'object');
 *         if (obj instanceof Foo) {
 *           new chai.Assertion(obj.name).to.equal('bar');
 *         } else {
 *           _super.call(this);
 *         }
 *       }
 *     });
 *
 *
 * Can also be accessed directly from `chai.Assertion`.
 *
 *     chai.Assertion.overwriteProperty('foo', fn);
 *
 * Then can be used as any other assertion.
 *
 *     expect(myFoo).to.be.ok;
 *
 * @param {Object} ctx object whose property is to be overwritten
 * @param {String} name of property to overwrite
 * @param {Function} getter function that returns a getter function to be used for name
 * @name overwriteProperty
 * @api public
 */

module.exports = function (ctx, name, getter) {
  var _get = Object.getOwnPropertyDescriptor(ctx, name)
    , _super = function () {};

  if (_get && 'function' === typeof _get.get)
    _super = _get.get

  Object.defineProperty(ctx, name,
    { get: function () {
        var result = getter(_super).call(this);
        return result === undefined ? this : result;
      }
    , configurable: true
  });
};

}); // module: utils/overwriteProperty.js

require.register("utils/test.js", function(module, exports, require){
/*!
 * Chai - test utility
 * Copyright(c) 2012 Jake Luer <jake@alogicalparadox.com>
 * MIT Licensed
 */

/*!
 * Module dependancies
 */

var flag = require('./flag');

/**
 * # test(object, expression)
 *
 * Test and object for expression.
 *
 * @param {Object} object (constructed Assertion)
 * @param {Arguments} chai.Assertion.prototype.assert arguments
 */

module.exports = function (obj, args) {
  var negate = flag(obj, 'negate')
    , expr = args[0];
  return negate ? !expr : expr;
};

}); // module: utils/test.js


  return require('chai');
});