public function testReadmeExample()
 {
     /**
      * Add DummyImage provider to faker generator
      */
     $faker = new Faker\Generator();
     $faker->addProvider(new DummyImage($faker));
     /**
      * Get url to PNG picture with black background color and white text `some text here`
      */
     $imageUrl = $faker->someImageUrl(320, 240, [DummyImage::OPTION_BG_COLOR => '000000', DummyImage::OPTION_FG_COLOR => 'ffffff', DummyImage::OPTION_TEXT => 'some text here', DummyImage::OPTION_EXTENSION => DummyImage::EXTENSION_PNG]);
     /**
      * Download PNG picture with black background color and white text `some text here`.
      * Save picture to system temp folder and return filename only.
      */
     $fileName = $faker->someImage(320, 240, [DummyImage::OPTION_BG_COLOR => '000000', DummyImage::OPTION_FG_COLOR => 'ffffff', DummyImage::OPTION_TEXT => 'some text here', DummyImage::OPTION_EXTENSION => DummyImage::EXTENSION_PNG, DummyImage::OPTION_DIR => sys_get_temp_dir(), DummyImage::OPTION_FULL_PATH => false]);
     unlink(sys_get_temp_dir() . DIRECTORY_SEPARATOR . $fileName);
 }