PhpOffice\PhpPresentation\Tests\Shape\Drawing\Base64Test::testExtensionException PHP Method

    public function testExtensionException()
    {
        $imgData = str_replace('image/jpeg', 'fake/fake', $this->imageData);
        $oDrawing = new Base64();
        $oDrawing->setData($imgData);
        $oDrawing->getExtension();
    }