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easejs/test/test-warn-impl.js

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JavaScript

/**
* Tests warning system implementation
*
* Copyright (C) 2010,2011 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 common = require( './common' ),
assert = require( 'assert' ),
warn = common.require( 'warn' )
;
if ( typeof console === 'undefined' ) console = undefined;
/**
* The default warning handler should be the 'log' handler. This is a friendly
* compromise that will allow the developer to be warned of potential issues
* without affecting program execution.
*/
( function testDefaultHandlerIsLogger()
{
var called = false;
// stub it
warn.setConsole( {
warn: function()
{
called = true;
},
} );
warn.handle( warn.Warning( Error( 'foo' ) ) );
assert.ok( called,
"Default handler will log to console"
);
// restore console
warn.setConsole( console );
} )();
/**
* The warning handler can be altered at runtime. Ensure we can set it and call
* it appropriately. We do not need to use one of the pre-defined handlers.
*/
( function testCanSetAndCallWarningHandler()
{
var given,
warning = warn.Warning( Error( 'foo' ) );
// set a stub warning handler
warn.setHandler( function( warn )
{
given = warn;
} );
// trigger the handler
warn.handle( warning );
assert.deepEqual( given, warning,
"Set warning handler should be called with given Warning"
);
} )();