mirror of
https://github.com/jlengrand/Coding4Interviews.git
synced 2026-03-10 08:11:24 +00:00
114 lines
2.4 KiB
Python
114 lines
2.4 KiB
Python
"""
|
|
Unit Tests for the Linked Lists implementations
|
|
@jlengrand
|
|
2013/12
|
|
"""
|
|
|
|
from ll import SingleListItem
|
|
from ll import SingleLinkedList
|
|
|
|
import unittest
|
|
|
|
class test_single_linked_list_item(unittest.TestCase):
|
|
|
|
def test_item(self):
|
|
|
|
a = 12
|
|
t = SingleListItem(12)
|
|
|
|
self.assertEqual(a, t.value)
|
|
|
|
def test_has_next(self):
|
|
a = 12
|
|
t = SingleListItem(12)
|
|
|
|
self.assertEqual(False, t.has_next())
|
|
|
|
b = SingleListItem(13, t)
|
|
self.assertEqual(True, b.has_next())
|
|
|
|
|
|
class test_single_linked_list(unittest.TestCase):
|
|
|
|
def test_add(self):
|
|
a = 12
|
|
sl = SingleLinkedList()
|
|
|
|
sl.add(a)
|
|
self.assertEqual(1, len(sl))
|
|
|
|
sl.add(a)
|
|
self.assertEqual(2, len(sl))
|
|
|
|
def test_delete_item(self):
|
|
sl = SingleLinkedList()
|
|
|
|
sl.add(1)
|
|
sl.add(2)
|
|
sl.add(3)
|
|
self.assertEqual(3, len(sl))
|
|
|
|
self.assertEqual(1, sl._root.value)
|
|
|
|
self.assertRaises(Exception, lambda x : sl.delete_item(4))
|
|
|
|
sl.delete_item()
|
|
self.assertEqual(2, len(sl))
|
|
self.assertEqual(2, sl._root.value)
|
|
|
|
sl.add(4)
|
|
sl.add(5)
|
|
sl.add(6)
|
|
|
|
sl.delete_item(len(sl) - 1)
|
|
self.assertEqual("2, 3, 4, 5", sl.__str__())
|
|
|
|
sl.delete_item(1)
|
|
self.assertEqual("2, 4, 5", sl.__str__())
|
|
|
|
sl.delete_item()
|
|
self.assertEqual("4, 5", sl.__str__())
|
|
|
|
def test_delete(self):
|
|
sl = SingleLinkedList()
|
|
|
|
sl.add(2)
|
|
sl.add(1)
|
|
sl.add(3)
|
|
self.assertEqual(3, len(sl))
|
|
|
|
self.assertEqual(2, sl._root.value)
|
|
|
|
self.assertRaises(Exception, lambda x: sl.delete(4))
|
|
|
|
sl.delete(1)
|
|
self.assertEqual("2, 3", sl.__str__())
|
|
|
|
sl.delete(2)
|
|
self.assertEqual("3", sl.__str__())
|
|
|
|
sl.delete(3)
|
|
self.assertEqual("Empty List", sl.__str__())
|
|
self.assertEqual(0, len(sl))
|
|
|
|
def test_search(self):
|
|
|
|
sl = SingleLinkedList()
|
|
|
|
sl.add(2)
|
|
sl.add(1)
|
|
sl.add(3)
|
|
self.assertEqual(3, len(sl))
|
|
|
|
self.assertEqual(True, sl.search(2))
|
|
self.assertEqual(True, sl.search(3))
|
|
self.assertEqual(True, sl.search(1))
|
|
|
|
self.assertEqual(False, sl.search("a"))
|
|
self.assertEqual(False, sl.search(4))
|
|
self.assertEqual(False, sl.search(12))
|
|
|
|
|
|
if __name__ == "__main__":
|
|
unittest.main()
|