95 lines
2.4 KiB
JavaScript
95 lines
2.4 KiB
JavaScript
/**
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* Tests final members
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*
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* Copyright (C) 2010 Mike Gerwitz
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*
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* This file is part of 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 Lesser General Public License as published by the Free
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* Software Foundation, either version 3 of the License, or (at your option)
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* any later 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 Lesser General Public License
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* for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with 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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builder = common.require( 'ClassBuilder' )(
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common.require( 'MemberBuilder' )(),
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common.require( 'VisibilityObjectFactoryFactory' ).fromEnvironment()
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),
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Class = common.require( 'class' )
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FinalClass = common.require( 'class_final' )
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;
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/**
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* Ensure that FinalClass properly forwards data to create a new Class.
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*/
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( function testFinalClassesAreValidClasses()
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{
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assert.ok( Class.isClass( FinalClass( {} ) ),
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"Final classes should generate valid classes"
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);
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} )();
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/**
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* When a class is declared as final, it should prevent it from ever being
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* extended. Ever.
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*/
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( function testFinalClassesCannotBeExtended()
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{
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try
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{
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// this should fail
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FinalClass( 'Foo', {} ).extend( {} );
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}
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catch ( e )
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{
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assert.ok(
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e.message.search( 'Foo' ) !== -1,
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"Final class error message should contain name of class"
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);
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return;
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}
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assert.fail( "Should not be able to extend final classes" );
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} )();
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/**
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* Ensure we're able to create final classes by extending existing classes.
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*/
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( function testCanCreateFinalSubtypes()
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{
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var Foo = builder.build( {} ),
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FinalNamed = FinalClass( 'FinalNamed' ).extend( Foo, {} ),
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FinalAnon = FinalClass.extend( Foo, {} )
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;
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// named
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assert['throws']( function()
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{
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FinalNamed.extend( {} );
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}, Error, "Cannot extend final named subtype" );
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// anonymous
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assert['throws']( function()
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{
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FinalAnon.extend( {} );
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}, Error, "Cannot extend final anonymous subtype" );
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} )();
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