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+<!doctype html>
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+<html lang="en">
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+
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+ <head>
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+ <meta charset="utf-8">
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+
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+ <title>reveal.js - Test Plugins</title>
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+
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+ <link rel="stylesheet" href="../css/reveal.css">
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+ <link rel="stylesheet" href="qunit-2.5.0.css">
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+ </head>
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+
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+ <body style="overflow: auto;">
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+
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+ <div id="qunit"></div>
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+ <div id="qunit-fixture"></div>
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+
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+ <div class="reveal" style="display: none;">
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+
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+ <div class="slides">
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+
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+ <section>Slide content</section>
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+
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+ </div>
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+
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+ </div>
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+
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+ <script src="../js/reveal.js"></script>
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+ <script src="qunit-2.5.0.js"></script>
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+
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+ <script>
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+
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+ QUnit.module( 'Plugins' );
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+
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+ var initCounter = { PluginB: 0, PluginC: 0, PluginD: 0 };
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+
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+ // Plugin with no init method
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+ var PluginA = {};
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+
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+ // Plugin with init method
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+ var PluginB = { init: function() {
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+ initCounter['PluginB'] += 1;
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+ } };
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+
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+ // Async plugin with init method
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+ var PluginC = { init: function() {
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+ return new Promise(function( resolve ) {
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+ setTimeout( () => {
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+ initCounter['PluginC'] += 1;
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+ resolve();
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+ }, 1000 );
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+ });
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+ } };
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+
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+ // Plugin initialized after reveal.js is ready
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+ var PluginD = { init: function() {
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+ initCounter['PluginD'] += 1;
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+ } };
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+
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+ Reveal.registerPlugin( 'PluginA', PluginA );
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+ Reveal.registerPlugin( 'PluginB', PluginB );
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+ Reveal.registerPlugin( 'PluginC', PluginC );
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+
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+ Reveal.initialize();
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+
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+ QUnit.test( 'Can initialize synchronously', function( assert ) {
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+ assert.strictEqual( initCounter['PluginB'], 1 );
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+
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+ Reveal.registerPlugin( 'PluginB', PluginB );
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+
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+ assert.strictEqual( initCounter['PluginB'], 1, 'prevents duplicate registration' );
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+ });
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+
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+ QUnit.test( 'Can initialie asynchronously', function( assert ) {
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+ assert.expect( 3 );
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+ var done = assert.async( 2 );
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+
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+ assert.strictEqual( initCounter['PluginC'], 0, 'async plugin not immediately initialized' );
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+
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+ Reveal.addEventListener( 'ready', function() {
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+ assert.strictEqual( initCounter['PluginC'], 1, 'finsihed initializing when reveal.js dispatches "ready"' );
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+ done();
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+
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+ Reveal.registerPlugin( 'PluginD', PluginD );
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+ assert.strictEqual( initCounter['PluginD'], 1, 'plugin registered after reveal.js is ready still initiailizes' );
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+ done();
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+ });
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+ } );
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+ </script>
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+
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+ </body>
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+</html>
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Hakim El Hattab