def _false_test(x):
    """Finds where not False (where is True).

    Parameters
    ----------
    x : array_like
        Array to search.

    Returns
    -------
    array : array of bool
        Whether corresponding index is True. (Is not False.)

    Notes
    -----
    Converts to bool dtype as integer could have been given.
    """
    return x.astype(bool)