From 7dd33f188fe14fd3cfa358aad523410d646c98fb Mon Sep 17 00:00:00 2001
From: Hakim El Hattab <hakim.elhattab@gmail.com>
Date: Mon, 4 May 2015 20:58:58 -0400
Subject: lazy-load iframes only for current slide, unload when hidden

---
 test/test.html | 1 +
 test/test.js   | 9 +++++++++
 2 files changed, 10 insertions(+)

(limited to 'test')

diff --git a/test/test.html b/test/test.html
index 29d02a9..18f7504 100644
--- a/test/test.html
+++ b/test/test.html
@@ -44,6 +44,7 @@
 							<li class="fragment">4.2</li>
 							<li class="fragment">4.3</li>
 						</ul>
+						<iframe data-src="http://example.com"></iframe>
 					</section>
 
 					<section>
diff --git a/test/test.js b/test/test.js
index 3f93d3c..d59ddfa 100644
--- a/test/test.js
+++ b/test/test.js
@@ -495,6 +495,15 @@ Reveal.addEventListener( 'ready', function() {
 		strictEqual( document.querySelectorAll( '.reveal section img[src]' ).length, 1, 'Image source has been set' );
 	});
 
+	test( 'iframe with data-src', function() {
+		Reveal.slide( 0, 0 );
+		strictEqual( document.querySelectorAll( '.reveal section iframe[src]' ).length, 0, 'Iframe source is not set' );
+		Reveal.slide( 2, 0 );
+		strictEqual( document.querySelectorAll( '.reveal section iframe[src]' ).length, 1, 'Iframe source is set' );
+		Reveal.slide( 2, 1 );
+		strictEqual( document.querySelectorAll( '.reveal section iframe[src]' ).length, 0, 'Iframe source is not set' );
+	});
+
 	test( 'background images', function() {
 		var imageSource1 = Reveal.getSlide( 0 ).getAttribute( 'data-background-image' );
 		var imageSource2 = Reveal.getSlide( 1, 0 ).getAttribute( 'data-background' );
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