def test_points(aspect_ratio, elongation, triangularity):
    """Compute the coordinates of inner and outer equatorial points and high
    point based on plasma geometrical parameters.

    Args:
        aspect_ratio (float): minor radius / major radius
        elongation (float): plasma elongation
        triangularity (float): plasma triangularity

    Returns:
        ((float, float), (float, float), (float, float)): points (x, y)
            coordinates
    """
    outer_equatorial_point = (1 + aspect_ratio, 0)
    inner_equatorial_point = (1 - aspect_ratio, 0)
    high_point = (1 - triangularity*aspect_ratio, elongation*aspect_ratio)
    return outer_equatorial_point, inner_equatorial_point, high_point