add remaining tests

    data = np.reshape(data, (28, 28))

    dt = DataTransforms(data)

    # Check Blurring

    blurred = dt.gaussian_blur(sigma=1.5)

    check = scipy.ndimage.gaussian_filter(data, 1.5)

    assert np.allclose(check, blurred)

    check_blur = scipy.ndimage.gaussian_filter(data, 1.5)

    assert np.allclose(check_blur, blurred)

    # Check rotation

    angles = [0, 5, 10, 90]

    for ang in angles:

      rotate = dt.rotate(ang)

      check_rotate = scipy.ndimage.rotate(data, ang)

      assert np.allclose(rotate, check_rotate)

    # Check flip

    flip_lr = dt.flip(direction="lr")

    flip_ud = dt.flip(direction="ud")

    check_lr = np.fliplr(data)

    check_ud = np.flipud(data)

    assert np.allclose(flip_lr, check_lr)

    assert np.allclose(flip_ud, check_ud)

    # Check Scales

    h = 150

    w = 150

    scale = scipy.misc.imresize(data, (h, w))

    check_scale = dt.scale(h, w)

    np.allclose(scale, check_scale)