77 lines
2.3 KiB
JavaScript
77 lines
2.3 KiB
JavaScript
/**
|
|
* Tests pre-ES6 fallback symbol subset
|
|
*
|
|
* Copyright (C) 2014 Free Software Foundation, Inc.
|
|
*
|
|
* This file is part of GNU ease.js.
|
|
*
|
|
* ease.js is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU 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 General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
|
|
require( 'common' ).testCase(
|
|
{
|
|
caseSetUp: function()
|
|
{
|
|
this.Sut = this.require( 'util/symbol/FallbackSymbol' );
|
|
},
|
|
|
|
|
|
/**
|
|
* Symbols are used to create an object fields that is accessible only
|
|
* to the holder of a reference to the symbol used to create that field.
|
|
* Since this fallback is intended to be used in environments that do
|
|
* not support symbols, the alternative is to return a random string
|
|
* that is highly unlikely to exist in practice.
|
|
*/
|
|
'Constructor returns a generated string': function()
|
|
{
|
|
var result = this.Sut();
|
|
|
|
this.assertOk( typeof result === 'string' );
|
|
this.assertOk( result.length > 0 );
|
|
},
|
|
|
|
|
|
/**
|
|
* The generated string should be unique for each call, making it
|
|
* unlikely that its value can be guessed. Of course, this relies on the
|
|
* assumption that the runtime's PRNG is reliable and that it has not
|
|
* been maliciously rewritten.
|
|
*
|
|
* Note that we don't test the various implementation details, as that
|
|
* is intended to be opaque (see SUT source for details).
|
|
*/
|
|
'Generated string varies with each call': function()
|
|
{
|
|
var gen = {},
|
|
i = 32;
|
|
|
|
while ( i-- )
|
|
{
|
|
var result = this.Sut();
|
|
if ( gen[ result ] )
|
|
{
|
|
this.fail( result, '' );
|
|
}
|
|
|
|
gen[ result ] = true;
|
|
}
|
|
|
|
// this prevents the test from being marked as incomplete
|
|
this.assertOk( 'passed' );
|
|
},
|
|
} );
|
|
|