public function testSetFormat() { $imageFile = new CM_File(DIR_TEST_DATA . 'img/test.jpg'); $image = new CM_Image_Image($imageFile->read()); $this->assertSame(CM_Image_Image::FORMAT_JPEG, $image->getFormat()); $image->setFormat(CM_Image_Image::FORMAT_GIF); $this->assertSame(CM_Image_Image::FORMAT_GIF, $image->getFormat()); }