Function test_axline_setters

lib/matplotlib/tests/test_lines.py:373–401

()

def test_axline_setters():
    fig, ax = plt.subplots()
    line1 = ax.axline((.1, .1), slope=0.6)
    line2 = ax.axline((.1, .1), (.8, .4))
    # Testing xy1, xy2 and slope setters.
    # This should not produce an error.
    line1.set_xy1((.2, .3))
    line1.set_slope(2.4)
    line2.set_xy1((.3, .2))
    line2.set_xy2((.6, .8))
    # Testing xy1, xy2 and slope getters.
    # Should return the modified values.
    assert line1.get_xy1() == (.2, .3)
    assert line1.get_slope() == 2.4
    assert line2.get_xy1() == (.3, .2)
    assert line2.get_xy2() == (.6, .8)
    with pytest.warns(mpl.MatplotlibDeprecationWarning):
        line1.set_xy1(.2, .3)
    with pytest.warns(mpl.MatplotlibDeprecationWarning):
        line2.set_xy2(.6, .8)
    # Testing setting xy2 and slope together.
    # These test should raise a ValueError
    with pytest.raises(ValueError,
                       match="Cannot set an 'xy2' value while 'slope' is set"):
        line1.set_xy2(.2, .3)

    with pytest.raises(ValueError,
                       match="Cannot set a 'slope' value while 'xy2' is set"):
        line2.set_slope(3)


def test_axline_small_slope():