137 lines
3.8 KiB
JavaScript
137 lines
3.8 KiB
JavaScript
/**
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* Tests amount of time taken to invoke Class methods
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*
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* The expected results are as follows:
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* - Method invocations are expected to be slower than invoking a method on a
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* conventional constructor instance. This is because of the method wrapper
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* used by ease.js.
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* - Public methods externally should be invoked very quickly. They are part
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* of the class's prototype and therefore easily accessible.
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* - Public methods /internally/ are likely to be invoked slightly more
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* slowly. This is because it takes one extra step down the prototype chain
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* to access them. The difference should be minute.
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* - Protected and private methods internally should be accessed fairly
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* quickly since, like public methods externally, they are first on the
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* prototype chain.
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* - Protected members will be accessed more slowly than private members,
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* because they are one step lower on the prototype chain. Future versions
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* will remove this performance hit if the Class contains no private
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* members.
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*
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* Copyright (C) 2011, 2013, 2014 Free Software Foundation, Inc.
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*
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* This file is part of GNU ease.js.
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*
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* ease.js is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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var common = require( __dirname + '/common.js' ),
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Class = common.require( 'class' ),
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count = 500000,
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// used to ensure v8 doesn't optimize functions away
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i = 0,
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// instance of anonymous class
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foo = Class( {
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'public pub': function() { i++; },
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'protected prot': function() { i++; },
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'private priv': function() { i++; },
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'public testInternal': function()
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{
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var _self = this;
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common.test( function()
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{
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var i = count;
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while ( i-- )
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{
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_self.pub();
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}
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}, count, 'Invoke public methods internally' );
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common.test( function()
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{
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var i = count;
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while ( i-- )
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{
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_self.prot();
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}
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}, count, 'Invoke protected methods internally' );
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common.test( function()
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{
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var i = count;
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while ( i-- )
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{
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_self.priv();
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}
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}, count, 'Invoke private methods internally' );
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},
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} )()
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;
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common.test( function()
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{
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var i = count;
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while ( i-- )
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{
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foo.pub();
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}
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}, count, 'Invoke public methods externally' );
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// run the same test internally
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foo.testInternal();
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// allows us to compare private method invocation times with method
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// invocations on a conventional prototype (the increment of `i` is to
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// ensure that the function is not optimized away)
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( function()
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{
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var p = function() {};
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p.prototype.foo = function() { i++ };
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var o = new p();
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common.test( function()
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{
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var i = count;
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while ( i-- ) o.foo();
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}, count, '[baseline] Invoke method on prototype' );
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} )();
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// compare with plain old function invocation
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( function()
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{
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var f = function() { i++ };
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common.test( function()
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{
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var i = count;
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while ( i-- ) f();
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}, count, '[baseline] Invoke function' );
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} )();
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