-
Notifications
You must be signed in to change notification settings - Fork 0
/
TestCollatz.py
executable file
·167 lines (133 loc) · 4.07 KB
/
TestCollatz.py
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
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
#!/usr/bin/env python3
# -------------------------------
# projects/collatz/TestCollatz.py
# Copyright (C) 2015
# Glenn P. Downing
# -------------------------------
# https://docs.python.org/3.4/reference/simple_stmts.html#grammar-token-assert_stmt
# -------
# imports
# -------
from io import StringIO
from unittest import main, TestCase
from Collatz import collatz_read, collatz_eval, collatz_print, collatz_solve, collatz_cycle
# -----------
# TestCollatz
# -----------
class TestCollatz (TestCase) :
# ----
# read
# ----
def test_read (self) :
s = "1 10\n"
i, j = collatz_read(s)
self.assertEqual(i, 1)
self.assertEqual(j, 10)
st = "100 200\n"
i, j = collatz_read(st)
self.assertEqual(i, 100)
self.assertEqual(j, 200)
def test_read_empty(self):
s = ""
self.assertRaises(IndexError, collatz_read, s)
def test_read_negative_integers(self):
s = "-1 -2"
i, j = collatz_read(s)
self.assertEqual(i, -1)
self.assertEqual(j, -2)
def test_read_two_integers(self):
s = " 1 2 3 4 "
i, j = collatz_read(s)
self.assertEqual(i, 1)
self.assertEqual(j, 2)
def test_read_one_integer(self):
s = "1"
self.assertRaises(IndexError, collatz_read, s)
# ----
# eval
# ----
def test_eval_1 (self) :
v = collatz_eval(1, 10)
self.assertEqual(v, 20)
def test_eval_2 (self) :
v = collatz_eval(100, 200)
self.assertEqual(v, 125)
def test_eval_3 (self) :
v = collatz_eval(201, 210)
self.assertEqual(v, 89)
def test_eval_4 (self) :
v = collatz_eval(900, 1000)
self.assertEqual(v, 174)
def test_eval_reverse_range(self):
v = collatz_eval(10, 1)
self.assertEqual(v, 20)
v = collatz_eval(200, 100)
self.assertEqual(v, 125)
v = collatz_eval(210, 201)
self.assertEqual(v, 89)
v = collatz_eval(1000, 900)
self.assertEqual(v, 174)
def test_eval_negative_integer(self):
self.assertRaises(AssertionError, collatz_eval, -1, -2)
self.assertRaises(AssertionError, collatz_eval, 1, -2)
self.assertRaises(AssertionError, collatz_eval, -1, 2)
def test_eval_same_integer(self):
v = collatz_eval(1, 1)
self.assertEqual(v, 1)
v = collatz_eval(2, 2)
self.assertEqual(v, 2)
v = collatz_eval(4, 4)
self.assertEqual(v, 3)
v = collatz_eval(5, 5)
self.assertEqual(v, 6)
# -----
# print
# -----
def test_print (self) :
w = StringIO()
collatz_print(w, 1, 10, 20)
self.assertEqual(w.getvalue(), "1 10 20\n")
# -----
# solve
# -----
def test_solve (self) :
r = StringIO("1 10\n100 200\n201 210\n900 1000\n")
w = StringIO()
collatz_solve(r, w)
self.assertEqual(w.getvalue(), "1 10 20\n100 200 125\n201 210 89\n900 1000 174\n")
def test_solve_empty(self):
r = StringIO()
w = StringIO()
collatz_solve(r, w)
self.assertEqual(w.getvalue(), "")
def test_solve_null(self):
r = None
w = None
self.assertRaises(TypeError, collatz_solve, r, w)
def test_cycle(self):
n = 4
v = collatz_cycle(n)
self.assertEqual(v, 3)
n = 22
v = collatz_cycle(n)
self.assertEqual(v, 16)
# ----
# main
# ----
if __name__ == "__main__" :
main()
"""
% coverage3 run --branch TestCollatz.py > TestCollatz.out 2>&1
% coverage3 report -m >> TestCollatz.out
% cat TestCollatz.out
.......
----------------------------------------------------------------------
Ran 7 tests in 0.001s
OK
Name Stmts Miss Branch BrMiss Cover Missing
---------------------------------------------------------
Collatz 18 0 6 0 100%
TestCollatz 33 1 2 1 94% 79
---------------------------------------------------------
TOTAL 51 1 8 1 97%
"""