def test_lengthOrder_withIntervalsWithNotEqualLength_shouldReturnCorrectComparator(
self):
for _ in range(1000):
a = Interval(random.uniform(1, 200), random.uniform(1, 200))
b = Interval(random.uniform(1, 100), random.uniform(500, 1000))
self.assertEqual(-1, Interval.length_order(a, b))
self.assertEqual(1, Interval.length_order(b, a))
def test_hash_withNotEqualIntervals_shouldReturnNotEqualHashCodes(self):
for _ in range(1000):
a = Interval(random.uniform(1, 200), random.uniform(1, 200))
b = Interval(random.uniform(1, 100), random.uniform(500, 1000))
self.assertNotEqual(a, b)
self.assertNotEqual(b, a)
self.assertNotEqual(hash(a), hash(b))
def test_maxOrder_withIntervalsWithEqualMaxEndpointAndNotEqualMinEndpoint_shouldCompareByMinEndpoint(
self):
for _ in range(1000):
a = Interval(random.uniform(1, 200), 1500)
b = Interval(random.uniform(500, 1000), 1500)
self.assertEqual(-1, Interval.max_order(a, b))
self.assertEqual(1, Interval.max_order(b, a))
def test_insert_withValidArgumentAndDynamicInsertionInterface_shouldInsertIntervalIntoTree(self):
expected = set()
tree = DynamicInsertion(SegmentTree)
for i in range(1, 1000):
tree.insert(Interval(i, i))
expected.add(Interval(i, i))
self.assertEqual(i, len(tree))
self.assertEqual(expected, tree.all())
def test_contains_withPointNotInInterval_shouldReturnFalse(self):
i = Interval(0, 1)
for _ in range(1000):
a = random.random() + 1.1
b = random.random() - 1
self.assertFalse(i.contains(a))
self.assertFalse(a in i)
self.assertFalse(i.contains(b))
self.assertFalse(b in i)
def test_constructor_shouldCreateIntervalBetweenGivenEndpoints(self):
i = Interval(0, 1)
self.assertEqual(0, i.min)
self.assertEqual(1, i.max)
self.assertEqual("[0, 1]", str(i))
i = Interval(1, 0)
self.assertEqual(0, i.min)
self.assertEqual(1, i.max)
self.assertEqual("[0, 1]", str(i))
def test_delete_withIntervalNotInTreeAndDynamicDeletionInterface_shouldNotAlterTree(self):
intervals = set()
for i in range(500):
intervals.add(Interval(i, i))
tree = DynamicDeletion(SegmentTree, intervals)
for i in range(500, 1000):
tree.delete(Interval(i, i))
self.assertEqual(500, len(tree))
self.assertEqual(intervals, tree.all())
def test_delete_withIntervalInTreeAndDynamicDeletionInterface_shouldDeleteIntervalFromTree(self):
intervals = set()
for i in range(1, 500):
intervals.add(Interval(i, i))
tree = DynamicDeletion(SegmentTree, intervals)
for i in range(1, 500):
tree.delete(Interval(i, i))
intervals.remove(Interval(i, i))
self.assertEqual(499 - i, len(tree))
self.assertEqual(intervals, tree.all())
def __build(self, points, a, b):
if a + 1 == b:
v = self.__Node(Interval(points[a], points[b]))
return v
m = (a + b) // 2
v = self.__Node(Interval(points[a], points[b]))
v.left = self.__build(points, a, m)
v.right = self.__build(points, m, b)
return v
def test_contains_withPointInInterval_shouldReturnTrue(self):
i = Interval(0, 1)
self.assertTrue(i.contains(0))
self.assertTrue(i.contains(1))
self.assertTrue(0 in i)
self.assertTrue(1 in i)
for _ in range(1000):
a = random.random()
self.assertTrue(i.contains(a))
self.assertTrue(a in i)
def test_equals_withEqualIntervals_shouldReturnTrue(self):
a = Interval(0, 1)
b = Interval(1, 0)
self.assertTrue(a == b)
self.assertTrue(b == a)
b = Interval(0, 1)
self.assertTrue(a == b)
self.assertTrue(b == a)
b = a
self.assertTrue(a == b)
self.assertTrue(b == a)
def test_delete_withIntervalInTreeAndDynamicInsertionDeletionInterface_shouldDeleteIntervalFromTree(self):
tree = DynamicInsertionDeletion(SegmentTree)
expected = set()
for i in range(1, 500):
expected.add(Interval(i, i))
tree.insert(Interval(i, i))
for i in range(1, 500):
tree.delete(Interval(i, i))
expected.remove(Interval(i, i))
self.assertEqual(499 - i, len(tree))
self.assertEqual(expected, tree.elements())
def test_notEquals_withEqualIntervals_shouldReturnFalse(self):
a = Interval(0, 1)
b = Interval(1, 0)
self.assertFalse(a != b)
self.assertFalse(b != a)
b = Interval(0, 1)
self.assertFalse(a != b)
self.assertFalse(b != a)
b = a
self.assertFalse(a != b)
self.assertFalse(b != a)
def test_query_withPointInSomeIntervalsAndDynamicInsertionInterface_shouldReturnSetWithIntervalsThatContainQueryPoint(self):
tree = DynamicInsertion(SegmentTree)
point = random.uniform(0, 1000)
expected = set()
for i in range(500):
a = Interval(i, 1000)
b = Interval(random.uniform(0, 1000), random.uniform(0, 1000))
if point in a:
expected.add(a)
if point in b:
expected.add(b)
tree.insert(a)
tree.insert(b)
self.assertEqual(expected, tree.query(point))
def test_query_withPointInSomeIntervals_shouldReturnSetWithIntervalsThatContainQueryPoint(self):
point = random.uniform(0, 1000)
expected = set()
intervals = list()
for i in range(1000):
a = Interval(i, 1000)
b = Interval(random.uniform(0, 1000), random.uniform(0, 1000))
if point in a:
expected.add(a)
if point in b:
expected.add(b)
intervals.append(a)
intervals.append(b)
tree = IntervalTree(intervals)
self.assertEqual(expected, tree.query(point))
def test_constructor_withNotEqualIntervals_shouldCreateTreeWithAllGivenIntervals(self):
intervals = list()
for i in range(1000):
intervals.append(Interval(i, i))
tree = IntervalTree(intervals)
self.assertEqual(1000, len(tree))
def test_hash_withEqualIntervals_shouldReturnEqualHashCodes(self):
a = Interval(0, 1)
b = Interval(0, 1)
self.assertEqual(a, b)
self.assertEqual(b, a)
self.assertEqual(hash(a), hash(b))
b = Interval(1, 0)
self.assertEqual(a, b)
self.assertEqual(b, a)
self.assertEqual(hash(a), hash(b))
b = a
self.assertEqual(a, b)
self.assertEqual(b, a)
self.assertEqual(hash(a), hash(b))
def test_constructor_withCopiesOfOnlyOneInterval_shouldIgnoreCopiesAndConstructOneSizedTree(self):
intervals = list()
for _ in range(1000):
intervals.append(Interval(1, 1))
tree = IntervalTree(intervals)
self.assertEqual(1, len(tree))
def test_maxOrder_withEqualIntervals_shouldReturnZero(self):
a = Interval(1, 0)
b = Interval(1, 0)
self.assertEqual(0, Interval.max_order(a, b))
self.assertEqual(0, Interval.max_order(b, a))
b = Interval(0, 1)
self.assertEqual(0, Interval.max_order(a, b))
self.assertEqual(0, Interval.max_order(b, a))
b = a
self.assertEqual(0, Interval.max_order(a, b))
self.assertEqual(0, Interval.max_order(b, a))
def test_lengthOrder_withEqualLengthIntervals_shouldReturnZero(self):
a = Interval(1, 0)
b = Interval(1, 0)
self.assertEqual(0, Interval.length_order(a, b))
self.assertEqual(0, Interval.length_order(b, a))
b = Interval(0, 1)
self.assertEqual(0, Interval.length_order(a, b))
self.assertEqual(0, Interval.length_order(b, a))
b = a
self.assertEqual(0, Interval.length_order(a, b))
self.assertEqual(0, Interval.length_order(b, a))
def test_constructor_withDuplicatedIntervals_shouldIgnoreCopiesWhenBuildingTree(self):
intervals = list()
for i in range(500):
for _ in range(10):
intervals.append(Interval(i, i))
tree = IntervalTree(intervals)
self.assertEqual(500, len(tree))
def test_query_withNoneTypeArgument_shouldRaiseValueError(self):
intervals = list()
for i in range(10):
intervals.append(Interval(i, i))
tree = IntervalTree(intervals)
with self.assertRaises(ValueError):
tree.query(None)
def test_constructor_withCopiesOfOneFiveHundredIntervals_shouldIgnoreCopiesAndConstructFiveHundredSizedTree(
self):
intervals = list()
for i in range(500):
for _ in range(10):
intervals.append(Interval(i, i))
tree = SegmentTree(intervals)
self.assertEqual(500, len(tree))
def test_constructor_withDynamicDeletionInterfaceAndDuplicatedIntervalsInData_shouldRemoveDuplicatesAndCreateTree(self):
intervals = list()
for i in range(500):
for _ in range(10):
intervals.append(Interval(i, i))
tree = DynamicDeletion(SegmentTree, intervals)
self.assertEqual(500, len(tree))
self.assertEqual(set(intervals), tree.all())
def test_query_withEmptyTreeAndDynamicInsertionDeletionInterface_shouldReturnEmptySet(self):
tree = DynamicInsertionDeletion(SegmentTree)
for _ in range(500):
a = random.uniform(0, 1000)
self.assertEqual(set(), tree.query(a))
for i in range(500):
point = random.uniform(0, 1000)
a = Interval(i, i)
tree.insert(a)
tree.delete(a)
self.assertEqual(set(), tree.query(point))
def test_query_withPointInSomeIntervalsAndDynamicInsertionDeletionInterface_shouldReturnSetWithIntervalsThatContainQueryPoint(
self):
expected = set()
point = random.uniform(0, 1000)
tree = DynamicInsertionDeletion(IntervalTree)
for i in range(500):
a = Interval(i, 1000)
b = Interval(random.uniform(0, 1000), random.uniform(0, 1000))
if point in a:
expected.add(a)
if point in b:
expected.add(b)
tree.insert(a)
tree.insert(b)
self.assertEqual(expected, tree.query(point))
while len(expected) > 0:
x = expected.pop()
tree.delete(x)
self.assertEqual(expected, tree.query(point))
def test_query_withPointNotInAnyIntervalAndDynamicInsertionInterface_shouldReturnEmptySet(self):
leftmost = None
rightmost = None
tree = DynamicInsertion(SegmentTree)
for i in range(500):
a = Interval(random.uniform(0, i), random.uniform(i, 1000))
if leftmost is None or a.min < leftmost:
leftmost = a.min
if rightmost is None or a.max > rightmost:
rightmost = a.max
tree.insert(a)
self.assertEqual(set(), tree.query(leftmost - 1))
self.assertEqual(set(), tree.query(rightmost + 1))
def test_query_withPointNotInAnyInterval_shouldReturnEmptySet(self):
leftmost = None
rightmost = None
intervals = list()
for i in range(1000):
a = Interval(random.uniform(0, i), random.uniform(i, 1000))
if leftmost is None or a.min < leftmost:
leftmost = a.min
if rightmost is None or a.max > rightmost:
rightmost = a.max
intervals.append(a)
tree = IntervalTree(intervals)
self.assertEqual(set(), tree.query(leftmost - 1))
self.assertEqual(set(), tree.query(rightmost + 1))
def test_intersects_withIntervalsThatDoNotIntersect_shouldReturnFalse(
self):
for _ in range(1000):
# Interval in range [0, 1)
a = Interval(random.uniform(0, 1), random.uniform(0, 1))
# Interval in range [1, 1000)
b = Interval(random.uniform(1, 1000), random.uniform(1, 1000))
# Interval in range [-1000, -0.1)
c = Interval(random.uniform(-0.1, -1000),
random.uniform(-0.1, -1000))
self.assertFalse(a.intersects(b))
self.assertFalse(a.intersects(c))
self.assertFalse(b.intersects(c))
def test_notEquals_withNotEqualIntervals_shouldReturnTrue(self):
a = Interval(0, 1)
b = Interval(2, 0)
self.assertTrue(a != b)
self.assertTrue(b != a)
