def test_get_headroom_half(self):
ambient = 20
temp = 50
limit = 80
headroom = _get_headroom(ambient=ambient, temp=temp, limit=limit)
assert headroom == 0.50
def test_get_headroom_three_quarter(self):
ambient = 20
temp = 35
limit = 80
headroom = _get_headroom(ambient=ambient, temp=temp, limit=limit)
assert headroom == 0.75
def test_get_headroom_None(self):
ambient = None
temp = None
limit = None
headroom = _get_headroom(ambient=ambient, temp=temp, limit=limit)
assert isinstance(headroom, type(None))
def test_get_headroom_None(self):
ambient = None
temp = None
limit = None
headroom = _get_headroom(
ambient=ambient, temp=temp, limit=limit)
assert isinstance(headroom, type(None))
