th, 1, 'found one vertical slide with data-background="#ff0000"' );
					assert.strictEqual( deck3.getRevealElement().querySelectorAll( '.reveal .slides>section[data-background="#C6916B"]' ).length, 1, 'found one slide with data-background="#C6916B"' );
				});

				QUnit.test( 'data-transition attributes', function( assert ) {
					assert.strictEqual( deck3.getRevealElement().querySelectorAll( '.reveal .slides>section>section[data-transition="zoom"]' ).length, 1, 'found one vertical slide with data-transit