def test_interval_contains_inf():
inf = Interval.infinite()
assert inf.contains(math.inf) is True
assert inf.contains(-math.inf) is True
assert Interval.gte(0).contains(math.inf) is True
assert Interval.gte(0).contains(-math.inf) is False
assert Interval.lte(0).contains(math.inf) is False
assert Interval.lte(0).contains(-math.inf) is True
def test_extensions():
d = Interval(1, 3)
assert d.get_lte().equals(Interval.lte(3))
assert d.get_gte().equals(Interval.gte(1))
assert d.get_lt().equals(Interval.lt(1))
assert d.get_gt().equals(Interval.gt(3))
d = Interval.open(1, 3)
assert d.get_lte().equals(Interval.lt(3))
assert d.get_gte().equals(Interval.gt(1))
assert d.get_lt().equals(Interval.lte(1))
assert d.get_gt().equals(Interval.gte(3))
d = Interval.empty()
assert d.get_lte().is_empty
assert d.get_gte().is_empty
assert d.get_lt().is_empty
assert d.get_gt().is_empty
def test_sample_infinite():
f = Constant(1)
with pytest.raises(Exception):
f.sample_points()
with pytest.raises(Exception):
f.sample_points(domain=Interval.infinite())
with pytest.raises(Exception):
f.sample_points(domain=Interval.gte(0))
with pytest.raises(Exception):
f.sample_points(domain=Interval.lte(0))
def test_infinite():
assert Interval.gte(math.inf).is_empty is True
assert Interval.gte(-math.inf).is_empty is False
assert Interval.lte(math.inf).is_empty is False
assert Interval.lte(-math.inf).is_empty is True
