<!doctype html>
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<html lang="en">
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<head>
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<meta charset="utf-8">
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<title>reveal.js - Test Iframe Backgrounds</title>
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<link rel="stylesheet" href="../dist/reveal.css">
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<link rel="stylesheet" href="../node_modules/qunit/qunit/qunit.css">
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<script src="../node_modules/qunit/qunit/qunit.js"></script>
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</head>
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<body style="overflow: auto;">
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<div id="qunit"></div>
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<div id="qunit-fixture"></div>
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<div class="reveal" style="display: none;">
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<div class="slides">
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<section data-background-iframe="https://revealjs.com">1</section>
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<section data-background-iframe="https://revealjs.com">2</section>
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<section data-background-iframe="https://revealjs.com" data-preload>3</section>
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<section data-background-iframe="https://revealjs.com">4</section>
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<section data-background-iframe="https://revealjs.com">5</section>
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<section data-background-iframe="https://revealjs.com">6</section>
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</div>
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</div>
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<script src="../dist/reveal.js"></script>
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<script>
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QUnit.config.testTimeout = 30000;
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Reveal.initialize({ viewDistance: 3 }).then( () => {
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function getIframe( index ) {
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return document.querySelectorAll( '.slide-background' )[index].querySelector( 'iframe' );
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}
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QUnit.module( 'Iframe' );
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QUnit.test( 'Using default settings', function( assert ) {
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Reveal.slide(0);
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assert.strictEqual( getIframe(1).hasAttribute( 'src' ), false, 'not preloaded when within viewDistance' );
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Reveal.slide(1);
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assert.strictEqual( getIframe(1).hasAttribute( 'src' ), true, 'loaded when slide becomes visible' );
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Reveal.slide(0);
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assert.strictEqual( getIframe(1).hasAttribute( 'src' ), false, 'unloaded when slide becomes invisible' );
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});
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QUnit.test( 'Using data-preload', function( assert ) {
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Reveal.slide(1);
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assert.strictEqual( getIframe(2).hasAttribute( 'src' ), true, 'preloaded within viewDistance' );
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assert.strictEqual( getIframe(1).hasAttribute( 'src' ), true, 'loaded when slide becomes visible' );
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Reveal.slide(0);
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assert.strictEqual( getIframe(3).hasAttribute( 'src' ), false, 'unloads outside of viewDistance' );
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});
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QUnit.test( 'Using preloadIframes: true', function( assert ) {
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Reveal.configure({ preloadIframes: true });
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Reveal.slide(1);
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assert.strictEqual( getIframe(0).hasAttribute( 'src' ), true, 'preloaded within viewDistance' );
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assert.strictEqual( getIframe(1).hasAttribute( 'src' ), true, 'preloaded within viewDistance' );
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assert.strictEqual( getIframe(2).hasAttribute( 'src' ), true, 'preloaded within viewDistance' );
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});
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QUnit.test( 'Using preloadIframes: false', function( assert ) {
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Reveal.configure({ preloadIframes: false });
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Reveal.slide(0);
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assert.strictEqual( getIframe(1).hasAttribute( 'src' ), false, 'not preloaded within viewDistance' );
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assert.strictEqual( getIframe(2).hasAttribute( 'src' ), false, 'not preloaded within viewDistance' );
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Reveal.slide(1);
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assert.strictEqual( getIframe(1).hasAttribute( 'src' ), true, 'loaded when slide becomes visible' );
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});
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} );
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</script>
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</body>
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</html>
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