140 lines
3.3 KiB
JavaScript
140 lines
3.3 KiB
JavaScript
/**
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* Tests extending of interfaces
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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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* @package test
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*/
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var common = require( './common' ),
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assert = require( 'assert' ),
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Interface = common.require( 'interface' );
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( function testPropertiesNotPermittedWithinInterfaces()
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{
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assert.throws( function()
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{
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Interface.extend(
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{
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// properties (non-methods) are not permitted
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prop: 'not permitted',
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});
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}, TypeError, "Properties are not permitted within Interface definitions" );
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} )();
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( function testGettersAndSettersNotPermittedWithinInterfaces()
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{
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// don't perform this test if unsupported by environment
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if ( Object.prototype.__defineGetter__ === undefined )
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{
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return;
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}
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// so we don't break browsers that do not support getters/setters in object
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// notation
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var data = {};
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data.__defineGetter__( 'foo', function() {} );
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data.__defineSetter__( 'foo', function() {} );
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assert.throws( function()
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{
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Interface.extend( data );
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}, TypeError, "Getters/setters not permitted within Interfaces" );
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} )();
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assert.throws( function()
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{
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Interface.extend(
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{
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// concrete method
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method: function() {}
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});
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}, TypeError, "Concrete methods are not permitted within Interface definitions" );
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assert.doesNotThrow(
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function()
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{
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Interface.extend(
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{
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'abstract method': [],
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});
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},
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TypeError,
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"Abstract method declarations are allowed within Interface definitions"
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);
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var BaseType = Interface.extend(
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{
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'abstract method': [],
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});
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assert.ok(
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( BaseType.prototype.method instanceof Function ),
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"Interface contains defined abstract methods"
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);
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var SubType = Interface.extend( BaseType,
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{
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'abstract second': [],
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});
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assert.ok(
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( SubType.prototype instanceof BaseType ),
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"Generic interface extend method can extend from other interfaces"
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);
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assert.ok(
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( SubType.prototype.method === BaseType.prototype.method ),
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"Interface subtypes inherit abstract methods"
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);
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assert.ok(
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( SubType.prototype.second instanceof Function ),
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"Interfaces can be extended with additional abstract methods"
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);
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assert.ok(
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( BaseType.extend instanceof Function ),
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"Interface contains extend method"
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);
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var SubType2 = BaseType.extend(
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{
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'abstract second': [],
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});
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assert.ok(
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( SubType2.prototype instanceof BaseType ),
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"Interface extend method can extend interfaces"
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);
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assert.ok(
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( SubType2.prototype.second instanceof Function ),
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"Interfaces can be extended with additional abstract methods using " +
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"shorthand extend method"
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);
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