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easejs/test/MemberBuilderValidator/GetterSetterTest.js

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/**
* Tests member builder validation rules for getters/setters
*
* These tests can be run in a pre-ES5 environment since they do not deal with
* actual getters/setters; they deal only with the data associated with them.
*
* 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 <http://www.gnu.org/licenses/>.
*
* @author Mike Gerwitz
*/
var shared = require( __dirname + '/inc-common' );
require( 'common' ).testCase(
{
caseSetUp: function()
{
var _self = this;
this.quickFailureTest = function()
{
shared.quickFailureTest.apply( _self, arguments );
};
this.quickVisChangeTest = function( start, override, failtest, failstr )
{
shared.quickVisChangeTest.call( _self, start, override, failtest,
function( name, startobj, overrideobj )
{
_self.sut.validateGetterSetter(
name, {}, overrideobj,
{ get: function() {}, set: function() {} },
startobj
);
},
failstr
);
};
},
setUp: function()
{
this.sut = this.require( 'MemberBuilderValidator' )();
},
/**
* Getters/setters should not be able to override methods, for the obvious
* reason that they are two different types and operate entirely
* differently. Go figure.
*/
'Cannot override method with getter or setter': function()
{
var name = 'foo',
_self = this;
// getters and setters share the same call, so we don't need two
// separate tests
this.quickFailureTest( name, 'method', function()
{
_self.sut.validateGetterSetter(
name, {}, {}, { member: function() {} }
);
} );
},
'Cannot override property with getter or setter': function()
{
var name = 'foo',
_self = this;
// getters and setters share the same call, so we don't need two
// separate tests
this.quickFailureTest( name, 'method', function()
{
_self.sut.validateGetterSetter(
name, {}, {}, { member: 'foo' }
);
} );
},
/**
* De-escalating the visibility of any member would alter the interface of a
* subtype, which would not be polymorphic.
*/
'Getters/setters do not support visibility de-escalation': function()
{
this.quickVisChangeTest( 'public', 'protected', true );
this.quickVisChangeTest( 'protected', 'private', true );
},
/**
* Contrary to the above test, we have no such problem with visibility
* escalation.
*/
'Getters/setters support visibility escalation and equality': function()
{
var _self = this;
shared.visEscalationTest( function( cur )
{
_self.quickVisChangeTest( cur[ 0 ], cur[ 1 ], false );
} );
},
/**
* See property/method tests for more information. This is not strictly
* necessary (since getters/setters can exist only in an ES5+ environment),
* but it's provided for consistency. It's also easy to remove this feature
* without breaking BC. The reverse is untrue.
*/
'Cannot redeclare private getters/setters in subtypes': function()
{
var _self = this;
shared.privateNamingConflictTest( function( cur )
{
_self.quickVisChangeTest( cur[ 0 ], cur[ 1 ], true, 'conflict' );
} );
},
} );