def test_binary_vis_layer_make_state():
# Verifies that BinaryVector.make_state creates
# a shared variable whose value passes check_binary_samples
n = 5
num_samples = 1000
tol = .04
layer = BinaryVector(nvis = n)
rng = np.random.RandomState([2012,11,1])
mean = rng.uniform(1e-6, 1. - 1e-6, (n,))
z = inverse_sigmoid_numpy(mean)
layer.set_biases(z.astype(config.floatX))
init_state = layer.make_state(num_examples=num_samples,
numpy_rng=rng)
value = init_state.get_value()
check_binary_samples(value, (num_samples, n), mean, tol)
