forked from phuang07/python_algorithms
-
Notifications
You must be signed in to change notification settings - Fork 0
Expand file tree
/
Copy pathtest_stack.py
More file actions
72 lines (51 loc) · 1.8 KB
/
Copy pathtest_stack.py
File metadata and controls
72 lines (51 loc) · 1.8 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
#!/usr/bin/env python
# -*- coding: utf-8 -*-
"""
test_stack
----------------------------------
Tests for `python_algorithms.stack` module.
"""
import unittest
from python_algorithms.basic.stack import Stack
class TestStack(unittest.TestCase):
def setUp(self):
self.empty_stack = Stack()
self.stack = Stack()
self.seq = [0, 2, 4, 6, 8]
for x in self.seq:
self.stack.push(x)
def test_push_to_empty_stack(self):
self.empty_stack.push(0)
self.assertEqual(self.empty_stack.peek(), 0)
def test_push_to_stack(self):
self.stack.push(10)
self.assertEqual(self.stack.peek(), 10)
def test_pop_from_empty_stack(self):
self.assertRaises(IndexError, self.empty_stack.pop)
def test_pop_from_stack(self):
self.assertEqual(self.stack.pop(), self.seq[-1])
def test_size_of_empty_stack(self):
self.assertEqual(self.empty_stack.size, 0)
def test_size_of_stack(self):
self.assertEqual(self.stack.size, len(self.seq))
def test_peek_at_empty_stack(self):
self.assertRaises(IndexError, self.empty_stack.peek)
def test_peek_at_stack(self):
self.assertEqual(self.stack.peek(), self.seq[-1])
def test_iterate_empty_stack(self):
for curr in self.empty_stack:
self.assertEqual(False, True)
def test_iterate_stack(self):
iter_seq = []
for curr in self.stack:
iter_seq.append(curr)
iter_seq.reverse()
self.assertEqual(iter_seq, self.seq)
def test_str_empty_stack(self):
self.assertEqual(str(self.empty_stack), "")
def test_str_stack(self):
self.assertEqual(str(self.stack), " ".join([str(x) for x in self.seq]))
def tearDown(self):
pass
if __name__ == '__main__':
unittest.main()