def test_4_pytorch_mnist(self):
        """
        Test with the PyTorchClassifier. (Untargeted Attack)
        :return:
        """
        x_test = np.reshape(self.x_test_mnist, (self.x_test_mnist.shape[0], 1, 28, 28)).astype(np.float32)
        classifier = get_image_classifier_pt()
        self._test_attack(classifier, x_test, self.y_test_mnist, False)

        Test with the PyTorchClassifier. (Untargeted Attack)
        :return:
        
tests/attacks/test_pixel_attack.py