/
test_tree.py
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/
test_tree.py
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import unittest
import random
from tree import Tree
class TestTree(unittest.TestCase):
def test_height(self):
self.assertEqual(1, Tree(4).height())
self.assertEqual(2, Tree(1,
Tree(0)).height())
self.assertEqual(3, Tree(10, Tree(5, Tree(3), Tree(7)), Tree(15)).height())
def test_as_list(self):
self.assertEqual(Tree(10).as_list(), [10])
self.assertEqual(Tree(10, Tree(5, Tree(3), Tree(7)), Tree(15)).as_list(), [3, 5, 7, 10, 15])
def test_as_balanced(self):
self.assertEqual(Tree(1).add_immutables(2, 3, 4, 5, 6, 7).as_balanced().height(), 3)
self.assertEqual(Tree(1).add_immutables(2, 3, 4, 5, 6, 7, 8).as_balanced().height(), 4)
self.assertEqual(Tree(10).add_mutable(15, 12, 11, 20, 25, 5, 3, 7,
1, 4, 6, 8).as_balanced().height(), 4)
def test_add_mutable(self):
self.assertEqual(Tree(10).add_mutable(15, 5, 3, 7).as_list(), [3, 5, 7, 10, 15])
self.assertEqual(Tree(1).add_mutable(2, 3, 4, 5).as_list(), [1, 2, 3, 4, 5])
def test_add_immutable(self):
self.assertEqual(Tree(10).add_immutables(15, 5, 3, 7).as_list(), [3, 5, 7, 10, 15])
self.assertEqual(Tree(1).add_immutables(2, 3, 4, 5).as_list(), [1, 2, 3, 4, 5])
def test_del_mutable(self):
t = Tree(10).add_immutables(15, 5, 3, 7)
self.assertEqual(t.del_mutable(15).as_list(),
[3, 5, 7, 10])
self.assertEqual(t.del_mutable(5).as_list(),
[3, 7, 10])
self.assertEqual(t.del_mutable(10).as_list(),
[3, 7])
t = Tree(10).add_mutable(15, 12, 11, 20, 25, 5, 3, 7,
1, 4, 6, 8)
self.assertEqual(t.as_list(),
[1, 3, 4, 5, 6, 7, 8, 10,
11, 12, 15, 20, 25])
self.assertEqual(t.del_mutable(25).as_list(),
[1, 3, 4, 5, 6, 7, 8, 10,
11, 12, 15, 20])
self.assertEqual(t.del_mutable(11).as_list(),
[1, 3, 4, 5, 6, 7, 8, 10,
12, 15, 20])
self.assertEqual(t.del_mutable(8).as_list(),
[1, 3, 4, 5, 6, 7, 10,
12, 15, 20])
self.assertEqual(t.del_mutable(1).as_list(),
[3, 4, 5, 6, 7, 10,
12, 15, 20])
self.assertEqual(t.del_mutable(7).as_list(),
[3, 4, 5, 6, 10,
12, 15, 20])
self.assertEqual(t.del_mutable(3).as_list(),
[4, 5, 6, 10,
12, 15, 20])
self.assertEqual(t.del_mutable(10).as_list(),
[4, 5, 6,
12, 15, 20])
def test_del_immutable(self):
t = Tree(10).add_immutables(15, 5, 3, 7)
t = t.del_mutable(15)
self.assertEqual(t.as_list(),
[3, 5, 7, 10])
t = t.del_mutable(5)
self.assertEqual(t.as_list(),
[3, 7, 10])
t = t.del_mutable(10)
self.assertEqual(t.as_list(),
[3, 7])
t = Tree(10).add_mutable(15, 12, 11, 20, 25, 5, 3, 7,
1, 4, 6, 8)
self.assertEqual(t.as_list(),
[1, 3, 4, 5, 6, 7, 8, 10,
11, 12, 15, 20, 25])
t = t.del_mutable(25)
self.assertEqual(t.as_list(),
[1, 3, 4, 5, 6, 7, 8, 10,
11, 12, 15, 20])
t = t.del_mutable(11)
self.assertEqual(t.as_list(),
[1, 3, 4, 5, 6, 7, 8, 10,
12, 15, 20])
t = t.del_mutable(8)
self.assertEqual(t.as_list(),
[1, 3, 4, 5, 6, 7, 10,
12, 15, 20])
t = t.del_mutable(1)
self.assertEqual(t.as_list(),
[3, 4, 5, 6, 7, 10,
12, 15, 20])
t = t.del_mutable(7)
self.assertEqual(t.as_list(),
[3, 4, 5, 6, 10,
12, 15, 20])
t = t.del_mutable(3)
self.assertEqual(t.as_list(),
[4, 5, 6, 10,
12, 15, 20])
t = t.del_mutable(10)
self.assertEqual(t.as_list(),
[4, 5, 6,
12, 15, 20])
def test_random_mutable_adds_and_deletes(self):
t = Tree(10)
s = {10}
for _ in range(100):
r = random.randint(0, 100000000)
t.add_mutable(r)
s.add(r)
self.assertEqual(t.as_list(), sorted(s))
for i in range(99):
r = random.choice(list(s))
t.del_mutable(r)
s.remove(r)
self.assertEqual(t.as_list(), sorted(s), "problem in {}th delete".format(i))
def test_random_immutable_adds_and_deletes(self):
t = Tree(10)
s = {10}
for _ in range(100):
r = random.randint(0, 100000000)
t = t.add_mutable(r)
s.add(r)
self.assertEqual(t.as_list(), sorted(s))
for i in range(99):
r = random.choice(list(s))
t = t.del_mutable(r)
s.remove(r)
self.assertEqual(t.as_list(), sorted(s), "problem in {}th delete".format(i))
if __name__ == '__main__':
unittest.main()