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tree_test.py
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tree_test.py
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import unittest
from tree import SegmentTree, Range
class TestSegementTree(unittest.TestCase):
def test_construct_terminal(self):
tree = SegmentTree([1,2])
self.assertEquals(3, tree.sum(0, 1))
def test_construct_mini_tree(self):
tree = SegmentTree([1,2,3,4])
self.assertEquals(10, tree.sum(0, 3))
def test_partial_sum(self):
tree = SegmentTree([1,2,3,4,12,13])
self.assertEquals(3, tree.sum(0, 1))
self.assertEquals(7, tree.sum(2, 3))
self.assertEquals(21, tree.sum(1, 4))
def test_set_leaf(self):
tree = SegmentTree([1,2,3,4])
self.assertEquals(2, tree.sum(1, 1))
tree.set(1, 10)
self.assertEquals(10, tree.sum(1, 1))
def test_set_internal(self):
tree = SegmentTree([1,2,3,4])
self.assertEquals(10, tree.sum(0, 3))
tree.set(1, 10)
self.assertEquals(11, tree.sum(0, 1))
self.assertEquals(18, tree.sum(0, 3))
class TestRange(unittest.TestCase):
def test_split(self):
range = Range(3,5)
expected_split = (Range(3,4), Range(5,5))
self.assertEquals(expected_split, range.split())
def test_contains(self):
outer = Range(0,5)
inner = Range(2,3)
self.assertTrue(outer.contains(inner))
def test_partially_contains(self):
outer = Range(3,5)
inner = Range(2,3)
self.assertTrue(outer.partially_contains(inner))
inner = Range(3,3)
self.assertTrue(outer.partially_contains(inner))
if __name__ == "__main__":
unittest.main()