public function testTextStyles()
{
// Mock Pre
$mockTextStyle = $this->getMockForAbstractClass('PhpOffice\\PhpPresentation\\Style\\TextStyle');
$object = new SlideMaster();
$this->assertInstanceOf('PhpOffice\\PhpPresentation\\Style\\TextStyle', $object->getTextStyles());
$this->assertInstanceOf('PhpOffice\\PhpPresentation\\Slide\\SlideMaster', $object->setTextStyles($mockTextStyle));
$this->assertInstanceOf('PhpOffice\\PhpPresentation\\Style\\TextStyle', $object->getTextStyles());
}