Image-classification One Hot Encoding test passing with wrong solution

[jirivrany]

Hello,
I found that the provided unit test for one_hot_encode is passing with following code:

def one_hot_encode(x):
    """
    One hot encode a list of sample labels. Return a one-hot encoded vector for each label.
    : x: List of sample Labels
    : return: Numpy array of one-hot encoded labels
    """
    # TODO: Implement Function
    y = np.zeros((len(x), 10))
    return y

It seems that the third test: assert np.array_equal(enc_labels, new_enc_labels) is always passing.