def METHOD_NAME(self):
    """tests coordinate_system_from_vector_2d_quad"""
    xyz1 = [0., 0., 0.]
    xyz2 = [1., 0., 0.]
    xyz3 = [1., 1., 0.]
    xyz4 = [0., 1., 0.]
    coords1 = coordinate_system_from_vector_2d_quad(xyz1, xyz2, xyz3, xyz4)
    assert np.allclose(coords1[0, 2, 2], 1.0), '\n' + str(coords1[0, :, :])
    xyz1 = [
        [0., 0., 0.],
        [0., 0., 0.],
    ]
    xyz2 = [
        [1., 0., 0.],
        [1., 0., 0.],
    ]
    xyz3 = [
        [1., 1., 0.],
        [1., 1., 0.],
    ]
    xyz4 = [
        [0., 1., 0.],
        [0., 1., 0.],
    ]
    coords2 = coordinate_system_from_vector_2d_quad(xyz1, xyz2, xyz3, xyz4)
    two_coords = np.vstack([coords1, coords1])
    assert np.array_equal(two_coords, coords2)