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/*!
* Chai - addProperty utility
* Copyright(c) 2012-2013 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
});
};
Version data entries
100 entries across 68 versions & 1 rubygems