def METHOD_NAME():
    assert angle_diff(0, 0) == 0
    assert angle_diff(0, 360) == 0
    assert angle_diff(360, 0) == 0
    assert angle_diff(360, 360) == 0
    assert angle_diff(170, 540) == 10
    assert angle_diff(540, 10) == 170
    assert angle_diff(-180, 90) == 90
    assert angle_diff(-360, 10) == 10
    assert (angle_diff(-360.55555555555, 10) - 10.55555555555) < 0.000001