source: imaps-frontend/node_modules/object.values/test/tests.js@ d565449

'use strict';

var keys = require('object-keys');
var map = require('array.prototype.map');
var define = require('define-properties');

var hasSymbols = typeof Symbol === 'function' && typeof Symbol('foo') === 'symbol';

module.exports = function (values, t) {
        var a = {};
        var b = {};
        var c = {};
        var obj = { a: a, b: b, c: c };

        t.deepEqual(values(obj), [a, b, c], 'basic support');
        t.deepEqual(values({ a: a, b: a, c: c }), [a, a, c], 'duplicate values are included');

        t.test('values are in the same order as keys', function (st) {
                var object = { a: a, b: b };
                object[0] = 3;
                object.c = c;
                object[1] = 4;
                delete object[0];
                var objKeys = keys(object);
                var objValues = map(objKeys, function (key) {
                        return object[key];
                });
                st.deepEqual(values(object), objValues, 'values match key order');
                st.end();
        });

        t.test('non-enumerable properties are omitted', { skip: !Object.defineProperty }, function (st) {
                var object = { a: a, b: b };
                Object.defineProperty(object, 'c', { enumerable: false, value: c });
                st.deepEqual(values(object), [a, b], 'non-enumerable property‘s value is omitted');
                st.end();
        });

        t.test('inherited properties are omitted', function (st) {
                var F = function G() {};
                F.prototype.a = a;
                var f = new F();
                f.b = b;
                st.deepEqual(values(f), [b], 'only own properties are included');
                st.end();
        });

        t.test('Symbol properties are omitted', { skip: !hasSymbols }, function (st) {
                var object = { a: a, b: b, c: c };
                var enumSym = Symbol('enum');
                var nonEnumSym = Symbol('non enum');
                object[enumSym] = enumSym;
                object.d = enumSym;
                Object.defineProperty(object, nonEnumSym, { enumerable: false, value: nonEnumSym });
                st.deepEqual(values(object), [a, b, c, enumSym], 'symbol properties are omitted');
                st.end();
        });

        t.test('not-yet-visited keys deleted on [[Get]] must not show up in output', { skip: !define.supportsDescriptors }, function (st) {
                var o = { a: 1, b: 2, c: 3 };
                Object.defineProperty(o, 'a', {
                        get: function () {
                                delete this.b;
                                return 1;
                        }
                });
                st.deepEqual(values(o), [1, 3], 'when "b" is deleted prior to being visited, it should not show up');
                st.end();
        });

        t.test('not-yet-visited keys made non-enumerable on [[Get]] must not show up in output', { skip: !define.supportsDescriptors }, function (st) {
                var o = { a: 'A', b: 'B' };
                Object.defineProperty(o, 'a', {
                        get: function () {
                                Object.defineProperty(o, 'b', { enumerable: false });
                                return 'A';
                        }
                });
                st.deepEqual(values(o), ['A'], 'when "b" is made non-enumerable prior to being visited, it should not show up');
                st.end();
        });
};