def test_gan_utility_funcs(simple_gan: GAN):
xy_shp = simple_gan_z_shape[1:]
x = np.zeros(xy_shp, dtype=np.float32)
y = np.zeros(xy_shp, dtype=np.float32)
simple_gan.interpolate(x, y)
z_point = simple_gan.random_z_point()
neighbors = simple_gan.neighborhood(z_point, std=0.05)
diff = np.stack([neighbors[0]]*len(neighbors)) - neighbors
assert np.abs(diff).mean() < 0.1
