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easejs/test/test-util-prop-copy.js

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/**
* Tests util.propCopy
*
* 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
* @package test
*/
require( './common' );
var assert = require( 'assert' ),
propCopy = require( '../lib/util' ).propCopy;
var props = {
one: 1,
two: 2,
method: function two() {},
get val() {},
set val() {},
};
var dest = {};
propCopy( props, dest );
assert.ok(
( ( dest.one === props.one ) && ( dest.two === props.two ) ),
"All properties should be copied to the destination object"
);
var each = false,
prop = false,
method = false,
getter = false,
setter = false,
override = false,
override_data = [];
var test_val = 'foobar',
dest2_orig_method = function() { return test_val; };
var dest2 = {
// will cause methodOverride action to be invoked
method: dest2_orig_method,
};
propCopy( props, dest2, {
each: function foo()
{
each = this.performDefault;
},
property: function()
{
prop = this.performDefault;
},
method: function( name, func )
{
// perform default action to ensure methodOverride() is called
( method = this.performDefault )( name, func );
},
getter: function()
{
getter = this.performDefault;
},
setter: function()
{
setter = this.performDefault;
},
methodOverride: function( name, pre, func )
{
override = this.performDefault;
override_data = [ name, pre, func ];
},
} );
[ each, prop, method, getter, setter, override ].forEach( function( item, i )
{
assert.notEqual(
item,
false,
"Can override propCopy() parser functions [" + i + "]"
);
assert.ok(
( item instanceof Function ),
"propCopy() parser function overrides can invoke default functionality " +
"[" + i + "]"
);
});
assert.ok(
( override_data[ 0 ] === 'method' ),
"methodOverride action is passed correct method name"
);
assert.ok(
( override_data[ 1 ]() === test_val ),
"methodOverride action is passed correct original function"
);
assert.ok(
( override_data[ 2 ] === props.method ),
"methodOverride action is passed correct override function"
);