import matplotlib.gridspec as gridspec
import pytest


def test_equal():
    gs = gridspec.GridSpec(2, 1)
    assert gs[0, 0] == gs[0, 0]
    assert gs[:, 0] == gs[:, 0]


def test_width_ratios():
    """
    Addresses issue #5835.
    See at https://github.com/matplotlib/matplotlib/issues/5835.
    """
    with pytest.raises(ValueError):
        gridspec.GridSpec(1, 1, width_ratios=[2, 1, 3])


def test_height_ratios():
    """
    Addresses issue #5835.
    See at https://github.com/matplotlib/matplotlib/issues/5835.
    """
    with pytest.raises(ValueError):
        gridspec.GridSpec(1, 1, height_ratios=[2, 1, 3])