'use strict';

module.exports = function (getDescriptors, t) {

var enumDescriptor = {
        configurable: true,
        enumerable: false,
        value: true,
        writable: false
};
var writableDescriptor = {
        configurable: true,
        enumerable: true,
        value: 42,
        writable: true
};

t.test('works with Object.prototype poisoned setter', { skip: !Object.defineProperty }, function (st) {
        var key = 'foo';

        var obj = {};
        obj[key] = 42;

        var expected = {};
        expected[key] = {
                configurable: true,
                enumerable: true,
                value: 42,
                writable: true
        };

        /* eslint-disable no-extend-native, accessor-pairs */
        Object.defineProperty(Object.prototype, key, { configurable: true, set: function (v) { throw new Error(v); } });
        /* eslint-enable no-extend-native, accessor-pairs */

        var hasOwnNamesBug = false;
        try {
                Object.getOwnPropertyNames(obj);
        } catch (e) {
                // v8 in node 0.6 - 0.12 has a bug :-(
                hasOwnNamesBug = true;
                st.comment('SKIP: this engine has a bug with Object.getOwnPropertyNames: it can not handle a throwing setter on Object.prototype.');
        }

        if (!hasOwnNamesBug) {
                st.doesNotThrow(function () {
                        var result = getDescriptors(obj);
                        st.deepEqual(result, expected, 'got expected descriptors');
                });
        }

        /* eslint-disable no-extend-native */
        delete Object.prototype[key];
        /* eslint-enable no-extend-native */
        st.end();
});

t.test('gets all expected non-Symbol descriptors', function (st) {
        var obj = { normal: Infinity };
        Object.defineProperty(obj, 'enumerable', enumDescriptor);
        Object.defineProperty(obj, 'writable', writableDescriptor);

        var descriptors = getDescriptors(obj);

        st.deepEqual(descriptors, {
                enumerable: enumDescriptor,
                normal: {
                        configurable: true,
                        enumerable: true,
                        value: Infinity,
                        writable: true
                },
                writable: writableDescriptor
        });
        st.end();
});

var supportsSymbols = typeof Symbol === 'function' && typeof Symbol() === 'symbol';
t.test('gets Symbol descriptors too', { skip: !supportsSymbols }, function (st) {
        var symbol = Symbol();
        var symDescriptor = {
                configurable: false,
                enumerable: true,
                value: [symbol],
                writable: true
        };
        var obj = { normal: Infinity };
        Object.defineProperty(obj, 'enumerable', enumDescriptor);
        Object.defineProperty(obj, 'writable', writableDescriptor);
        Object.defineProperty(obj, 'symbol', symDescriptor);

        var descriptors = getDescriptors(obj);

        st.deepEqual(descriptors, {
                enumerable: enumDescriptor,
                normal: {
                        configurable: true,
                        enumerable: true,
                        value: Infinity,
                        writable: true
                },
                symbol: symDescriptor,
                writable: writableDescriptor
        });
        st.end();
});

/* global Proxy */
var supportsProxy = typeof Proxy === 'function';
t.test('Proxies that return an undefined descriptor', { skip: !supportsProxy }, function (st) {
        var obj = { foo: true };
        var fooDescriptor = Object.getOwnPropertyDescriptor(obj, 'foo');

        var proxy = new Proxy(obj, {
                getOwnPropertyDescriptor: function (target, key) {
                        return Object.getOwnPropertyDescriptor(target, key);
                },
                ownKeys: function () {
                        return [
                                'foo',
                                'bar'
                        ];
                }
        });
        st.deepEqual(getDescriptors(proxy), { foo: fooDescriptor }, 'object has no descriptors');
        st.end();
});

};