def METHOD_NAME(self):
    x = [(0,0), (0,1), (1,0)]
    y = [1, 2, 3]
    yi = griddata(x, y, [(1,1), (1,2), (0,0)], fill_value=-1)
    assert_array_equal(yi, [-1., -1, 1])
    yi = griddata(x, y, [(1,1), (1,2), (0,0)])
    assert_array_equal(yi, [np.nan, np.nan, 1])