/** * Tests class getter/setter inheritance * * Copyright (C) 2010 Mike Gerwitz * * This file is part of ease.js. * * ease.js is free software: you can redistribute it and/or modify it under the * terms of the GNU Lesser General Public License as published by the Free * Software Foundation, either version 3 of the License, or (at your option) * any later version. * * This program is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License * for more details. * * You should have received a copy of the GNU Lesser General Public License * along with this program. If not, see . * * @author Mike Gerwitz */ var common = require( './common' ), assert = require( 'assert' ), Class = common.require( 'class' ), util = common.require( 'util' ), foo_def = {}, sub_foo_def = {} ; // don't perform these tests if getters/setters are unsupported if ( util.definePropertyFallback() ) { return; } // to prevent syntax errors in browsers that do not support getters/setters in // object notation Object.defineProperty( foo_def, 'foo', { get: function () { return this._foo; }, set: function ( val ) { this._foo = ''+( val ); }, enumerable: true, } ); Object.defineProperty( foo_def, 'bar', { get: function () { return 'durp'; }, set: function ( val ) { }, enumerable: true, } ); Object.defineProperty( sub_foo_def, 'bar', { get: function () { return this.bar2; }, set: function ( val ) { this.bar2 = val; }, enumerable: true, } ); var Foo = Class.extend( foo_def ), SubFoo = Foo.extend( sub_foo_def ); var foo = new Foo(), sub = new SubFoo(), val = 'val'; // ensure we have our act together before continuing foo.foo = val; assert.equal( foo.foo, val, "Sanity check" ); // foo should be inherited as-is (if this doesn't work, someone went out of // their way to break it, as it works by default!) sub.foo = val = 'val2'; assert.equal( sub.foo, val, "Subtypes should inherit getter/setters" ); sub.bar = val = 'val3'; assert.equal( sub.bar, val, "Subtypes should be able to override getter/setters" ); assert.equal( sub.bar2, val, "Subtypes should be able to override getter/setters (check 2)" );