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easejs/test/test-combine-pre-es5.js

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2.4 KiB
JavaScript

/**
* Tests combined file, attempting to emulate a pre-ECMAScript5 environment.
* This will ensure fallbacks will work properly on older browsers, such as IE6.
*
* This is /not/ an alternative to running the test suite in the browser of your
* choice. It is intended to catch errors early, to ensure bugs are not
* committed between browser tests.
*
* Copyright (C) 2011, 2013 Mike Gerwitz
*
* 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/>.
*/
var common = require( './common' ),
assert = require( 'assert' ),
vm = require( 'vm' ),
Class = common.require( 'class' ),
// sandbox in which combined script will be run
sandbox = vm.createContext( {
// stub document.write() so we don't blow up
document: { write: function() {} },
runTests: null,
} );
var file = 'ease-full.js';
// attempt to read the combined file
try
{
var data = require( 'fs' )
.readFileSync( ( __dirname + '/../build/' + file ), 'ascii' );
}
catch ( e )
{
// if the file doesn't exit, just skip the test
console.log(
"Combined file not found. Test skipped. Please run `make combined`."
);
process.exit( 0 );
}
// Let's take this bitch back in time (this is not a complete list, but
// satisfies what we need).
//
// It is important to note that we prepend this to the script that we'll be
// executing, because the script will be executed within a new scope. Any
// clobbering we do in our scope will not affect it, nor will any clobbering we
// do to it affect us.
data = "delete Object.defineProperty;" +
"delete Array.prototype.forEach;" +
data
;
// run the script (if this fails to compile, the generated code is invalid)
vm.runInNewContext( data, sandbox );
// cross your fingers
sandbox.easejs.runTests();