def test_Face_default():
assert Face.default() == Face(AbsoluteCoord.default(),
RelativeCoord.default(),
RelativeCoord.default(),
RelativeCoord.default(), Eye.default(),
Eye.default(), Mouth.default(),
Nose.default(), EyeBrow.default(),
EyeBrow.default())
def test_Nose__add__(a, b, c):
""" the properties are taken from here:
http://hackage.haskell.org/package/base-4.12.0.0/docs/Prelude.html#t:Num
"""
assert round_Part((a + b) + c) == round_Part(a + (b + c))
assert a + b == b + a
assert a + Nose.default() == a
assert a + -a == Nose(Coord(0, 0), Coord(0, 0), Coord(0, 0))
def test_Nose_default():
assert Nose.default() == Nose(Coord(0, 0), Coord(0, 0), Coord(0, 0))