public function testHyperlink()
 {
     $object = new RichText();
     $this->assertInstanceOf('PhpOffice\\PhpPresentation\\AbstractShape', $object->setHyperlink());
     $this->assertFalse($object->hasHyperlink());
     $this->assertInstanceOf('PhpOffice\\PhpPresentation\\Shape\\Hyperlink', $object->getHyperlink());
     $this->assertTrue($object->hasHyperlink());
     $this->assertInstanceOf('PhpOffice\\PhpPresentation\\AbstractShape', $object->setHyperlink(new Hyperlink('http://www.google.fr')));
     $this->assertTrue($object->hasHyperlink());
     $this->assertInstanceOf('PhpOffice\\PhpPresentation\\Shape\\Hyperlink', $object->getHyperlink());
     $this->assertTrue($object->hasHyperlink());
 }