;
				}

				QUnit.module( 'Iframe' );

				QUnit.test( 'Using default settings', function( assert ) {

					Reveal.slide(0);
					assert.strictEqual( getIframe(1).hasAttribute( 'src' ), false, 'not preloaded when within viewDistance' );

					Reveal.slide(1);
					assert.strictEqual( getIframe(1).hasAttribute( 'src' ), true, 'loaded when slide becomes visible' );

					Reveal.slide(0);
					assert.strictEqual( getIframe(1).hasAttribute( 'src' ), false, 'unloaded when slide becomes invisible' );

				});

	