def test_creation():
assert I.closed(0, 1) == I.AtomicInterval(I.CLOSED, 0, 1, I.CLOSED)
assert I.open(0, 1) == I.AtomicInterval(I.OPEN, 0, 1, I.OPEN)
assert I.openclosed(0, 1) == I.AtomicInterval(I.OPEN, 0, 1, I.CLOSED)
assert I.closedopen(0, 1) == I.AtomicInterval(I.CLOSED, 0, 1, I.OPEN)
assert I.closed(-I.inf, I.inf) == I.open(-I.inf, I.inf)
assert I.singleton(2) == I.closed(2, 2)
assert I.Interval() == I.open(0, 0)
assert I.empty() == I.Interval()
assert I.closed(3, -3) == I.empty()
assert I.openclosed(3, 3) == I.empty()
# I.empty() is a singleton
assert I.empty() is I.empty()
assert I.Interval(I.closed(0, 1).to_atomic()) == I.closed(0, 1)
assert I.Interval(I.closed(0, 1)) == I.closed(0, 1)
assert I.Interval(I.closed(0, 1).to_atomic(),
I.closed(2, 3)) == I.closed(0, 1) | I.closed(2, 3)
assert I.Interval(I.closed(0, 1)
| I.closed(2, 3)) == I.closed(0, 1) | I.closed(2, 3)
with pytest.raises(TypeError):
I.Interval(1)
def test_apply():
i = I.closed(0, 1)
assert i.apply(lambda s: s) == i
assert i.apply(lambda s: (False, -1, 2, False)) == I.open(-1, 2)
assert i.apply(lambda s: I.AtomicInterval(False, -1, 2, False)) == I.open(
-1, 2)
assert i.apply(lambda s: I.open(-1, 2)) == I.open(-1, 2)
i = I.closed(0, 1) | I.closed(2, 3)
assert i.apply(lambda s: s) == i
assert i.apply(lambda s: (False, -1, 2, False)) == I.open(-1, 2)
assert i.apply(lambda s: (not s.left, s.lower - 1, s.upper - 1, not s.right
)) == I.open(-1, 0) | I.open(1, 2)
assert i.apply(lambda s: I.AtomicInterval(False, -1, 2, False)) == I.open(
-1, 2)
assert i.apply(lambda s: I.open(-1, 2)) == I.open(-1, 2)
assert i.apply(lambda s:
(s.left, s.lower, s.upper * 2, s.right)) == I.closed(0, 6)
assert I.empty().apply(lambda s: (I.CLOSED, 1, 2, I.CLOSED)) == I.closed(
1, 2)
with pytest.raises(TypeError):
i.apply(lambda s: None)
with pytest.raises(TypeError):
i.apply(lambda s: 'unsupported')
def test_creation():
assert I.closed(0, 1) == I.AtomicInterval(I.CLOSED, 0, 1, I.CLOSED)
assert I.open(0, 1) == I.AtomicInterval(I.OPEN, 0, 1, I.OPEN)
assert I.openclosed(0, 1) == I.AtomicInterval(I.OPEN, 0, 1, I.CLOSED)
assert I.closedopen(0, 1) == I.AtomicInterval(I.CLOSED, 0, 1, I.OPEN)
assert I.closed(-I.inf, I.inf) == I.open(-I.inf, I.inf)
with pytest.raises(ValueError):
I.closed(1, -1)
assert I.singleton(2) == I.closed(2, 2)
assert I.Interval() == I.open(0, 0)
assert I.empty() == I.Interval()
def test_interval_to_atomic():
intervals = [I.closed(0, 1), I.open(0, 1), I.openclosed(0, 1), I.closedopen(0, 1)]
for interval in intervals:
assert interval == I.Interval(interval.to_atomic())
assert interval == interval.to_atomic()
assert I.closed(0, 1) | I.closed(2, 3) != I.closed(0, 3)
assert (I.closed(0, 1) | I.closed(2, 3)).to_atomic() == I.closed(0, 3)
assert I.closed(0, 1).to_atomic() == I.closed(0, 1).enclosure()
assert (I.closed(0, 1) | I.closed(2, 3)).enclosure() == I.closed(0, 3)
assert I.empty().to_atomic() == I.AtomicInterval(False, I.inf, -I.inf, False)