/** * Tests class parent invocation * * 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 * @package test */ require( './common' ); var assert = require( 'assert' ), Class = require( 'class' ); var Foo = Class.extend( { hitMethod: false, hitMethod2: false, method2Arg: null, myMethod: function() { this.hitMethod = true; return this; }, myMethod2: function( arg ) { this.hitMethod2 = true; this.method2Arg = arg; return this; }, }); var SubFoo = Foo.extend( { myMethod: function() { return this; }, myMethod2: function( arg ) { return this.__super( arg ); }, callParentAlt: function() { return this.parent.myMethod2.apply( this, arguments ); }, }); var foo = new Foo(), sub_foo = new SubFoo(); // make sure we're working properly before we run the important assertions foo.myMethod().myMethod2(); assert.equal( foo.hitMethod, true, "Sanity check" ); assert.equal( foo.hitMethod2, true, "Sanity check" ); var arg = 'foobar'; sub_foo.myMethod().myMethod2( arg ); // myMethod overrides without calling parent assert.equal( sub_foo.hitMethod, false, "Subtype should be able to override parent properties" ); // myMethod2 overrides parent then calls super method assert.equal( sub_foo.hitMethod2, true, "Subtype should be able to call parent method" ); assert.equal( sub_foo.method2Arg, arg, "Arguments should be passed to super method via _super argument list" ); assert.deepEqual( SubFoo.prototype.parent, Foo.prototype, "Parent property should represent parent prototype" ); sub_foo.callParentAlt( arg = 'moo' ); assert.equal( sub_foo.method2Arg, arg, "The parent property may also be used to invoke parent methods" );