/
pvc95-TestCollatz.py
executable file
·154 lines (122 loc) · 3.48 KB
/
pvc95-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
#!/usr/bin/env python
# -------------------------------
# Paul Carroll
# pvc95
# 90826
# -------------------------------
"""
To test the program:
% python TestCollatz.py >& TestCollatz.out
% chmod ugo+x TestCollatz.py
% TestCollatz.py >& TestCollatz.py.out
"""
# -------
# imports
# -------
import StringIO
import unittest
from Collatz import collatz_read, collatz_eval, collatz_print, collatz_solve, cycle_length
# -----------
# TestCollatz
# -----------
class TestCollatz (unittest.TestCase) :
# ----
# read
# ----
def test_read_1 (self) :
r = StringIO.StringIO("1 10\n")
a = [0, 0]
b = collatz_read(r, a)
self.assert_(b == True)
self.assert_(a[0] == 1)
self.assert_(a[1] == 10)
def test_read_2 (self) :
r = StringIO.StringIO("100 200\n")
a = [0, 0]
b = collatz_read(r, a)
self.assert_(b == True)
self.assert_(a[0] == 100)
self.assert_(a[1] == 200)
def test_read_3 (self) :
r = StringIO.StringIO("201 210\n")
a = [0, 0]
b = collatz_read(r, a)
self.assert_(b == True)
self.assert_(a[0] == 201)
self.assert_(a[1] == 210)
# ----
# eval
# ----
def test_eval_1 (self) :
v = collatz_eval(1, 10)
self.assert_(v == 20)
def test_eval_2 (self) :
v = collatz_eval(100, 200)
self.assert_(v == 125)
def test_eval_3 (self) :
v = collatz_eval(201, 210)
self.assert_(v == 89)
def test_eval_4 (self) :
v = collatz_eval(900, 1000)
self.assert_(v == 174)
# -----
# print
# -----
def test_print_1 (self) :
w = StringIO.StringIO()
collatz_print(w, 1, 10, 20)
self.assert_(w.getvalue() == "1 10 20\n")
def test_print_2 (self) :
w = StringIO.StringIO()
collatz_print(w, 100, 200, 125)
self.assert_(w.getvalue() == "100 200 125\n")
def test_print_3 (self) :
w = StringIO.StringIO()
collatz_print(w, 900, 1000, 174)
self.assert_(w.getvalue() == "900 1000 174\n")
# -----
# solve
# -----
def test_solve_1 (self) :
r = StringIO.StringIO("1 10\n100 200\n201 210\n900 1000\n")
w = StringIO.StringIO()
collatz_solve(r, w)
self.assert_(w.getvalue() == "1 10 20\n100 200 125\n201 210 89\n900 1000 174\n")
def test_solve_2 (self) :
r = StringIO.StringIO("1000000 1000000\n")
w = StringIO.StringIO()
collatz_solve(r, w)
self.assert_(w.getvalue() == "1000000 1000000 153\n")
def test_solve_3 (self) :
r = StringIO.StringIO("583106 317758\n")
w = StringIO.StringIO()
collatz_solve(r, w)
self.assert_(w.getvalue() == "583106 317758 470\n")
def test_solve_4 (self) :
r = StringIO.StringIO("1 1\n")
w = StringIO.StringIO()
collatz_solve(r, w)
self.assert_(w.getvalue() == "1 1 1\n")
def test_solve_5 (self) :
r = StringIO.StringIO("1001 2001\n")
w = StringIO.StringIO()
collatz_solve(r, w)
self.assert_(w.getvalue() == "1001 2001 182\n")
# ------------
# cycle_length
# ------------
def test_cycle_length_1 (self):
l0 = cycle_length(0)
self.assert_(l0 == 0)
def test_cycle_length_2 (self):
l = cycle_length(-1)
self.assert_(l == 0)
def test_cycle_length_3 (self):
l = cycle_length(5)
self.assert_(l == 6)
# ----
# main
# ----
print "TestCollatz.py"
unittest.main()
print "Done."