135 lines
3.0 KiB
JavaScript
135 lines
3.0 KiB
JavaScript
/**
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* Tests class parent invocation
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*
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* Copyright (C) 2010, 2011, 2013 Mike Gerwitz
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*
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* This file is part of GNU ease.js.
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*
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* ease.js is free software: you can redistribute it and/or modify it under the
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* terms of the GNU General Public License as published by the Free Software
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* Foundation, either version 3 of the License, or (at your option) any later
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* version.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program. If not, see <http://www.gnu.org/licenses/>.
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*
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* @author Mike Gerwitz
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*/
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var common = require( './common' ),
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assert = require( 'assert' ),
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Class = common.require( 'class' ),
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// we store these outside of the class to ensure that visibility bugs do not
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// get in the way of our assertions
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hitMethod = false,
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hitMethod2 = false,
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hitDouble = false,
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method2Arg = null,
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Foo = Class.extend(
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{
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'virtual myMethod': function()
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{
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hitMethod = true;
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return this;
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},
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'virtual myMethod2': function( arg )
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{
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hitMethod2 = true;
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method2Arg = arg;
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return this;
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},
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'virtual double': function()
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{
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hitDouble = true;
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}
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}),
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SubFoo = Foo.extend(
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{
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'override myMethod': function()
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{
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return this;
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},
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'override myMethod2': function( arg )
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{
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return this.__super( arg );
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},
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'override double': function()
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{
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this.myMethod();
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this.__super();
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return this;
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}
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}),
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foo = new Foo(),
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sub_foo = new SubFoo()
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;
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// make sure we're working properly before we run the important assertions
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foo.myMethod().myMethod2();
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assert.equal(
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hitMethod,
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true,
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"Sanity check"
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);
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assert.equal(
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hitMethod2,
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true,
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"Sanity check"
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);
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hitMethod = hitMethod2 = false;
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var arg = 'foobar';
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sub_foo.myMethod().myMethod2( arg ).double();
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// myMethod overrides without calling parent
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assert.equal(
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hitMethod,
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false,
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"Subtype should be able to override parent properties"
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);
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// myMethod2 overrides parent then calls super method
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assert.equal(
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hitMethod2,
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true,
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"Subtype should be able to call parent method"
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);
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assert.equal(
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method2Arg,
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arg,
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"Arguments should be passed to super method via _super argument list"
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);
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assert['throws']( function()
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{
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Foo.extend(
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{
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// overriding method with scalar; shouldn't be allowed
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myMethod: 'scalar',
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});
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}, TypeError, "Methods must be overridden with a Function" );
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// ensure that __super is not cleared after a call to an override
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assert.equal(
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hitDouble,
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true,
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"__super is maintained in a stack-like manner"
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);
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