public function testSlideLayout()
{
$object = new Slide();
$this->assertEquals(Slide\Layout::BLANK, $object->getSlideLayout());
$this->assertInstanceOf('PhpOffice\\PhpPresentation\\Slide', $object->setSlideLayout());
$this->assertEquals(Slide\Layout::BLANK, $object->getSlideLayout());
$this->assertInstanceOf('PhpOffice\\PhpPresentation\\Slide', $object->setSlideLayout(Slide\Layout::TITLE_SLIDE));
$this->assertEquals(Slide\Layout::TITLE_SLIDE, $object->getSlideLayout());
}