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rshwarts-TestCollatz.py
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rshwarts-TestCollatz.py
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#!/usr/bin/env python
# -------------------------------
# projects/collatz/TestCollatz.py
# Copyright (C) 2011
# Glenn P. Downing
# -------------------------------
"""
To test the program:
% python TestCollatz.py > TestCollatz.py.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, collatz_eval_num
# -----------
# TestCollatz
# -----------
class TestCollatz (unittest.TestCase) :
# ----
# read
# ----
def test_read1 (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_read2 (self) :
r = StringIO.StringIO("1 1\n")
a = [0, 0]
b = collatz_read(r, a)
self.assert_(b == True)
self.assert_(a[0] == 1)
self.assert_(a[1] == 1)
def test_read3 (self) :
r = StringIO.StringIO("2 1\n")
a = [0, 0]
b = collatz_read(r, a)
self.assert_(b == True)
self.assert_(a[0] == 2)
self.assert_(a[1] == 1)
def test_read4 (self) :
r = StringIO.StringIO("")
a = [0, 0]
b = collatz_read(r, a)
self.assert_(b == False)
def test_read5 (self) :
r = StringIO.StringIO("1 10 51\n")
a = [0, 0]
b = collatz_read(r, a)
self.assert_(b == True)
self.assert_(a[0] == 1)
self.assert_(a[1] == 10)
# ----
# 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)
def test_eval_5 (self) :
v = collatz_eval(10, 1)
self.assert_(v == 20)
def test_eval_6 (self) :
v = collatz_eval(1, 1)
self.assert_(v == 1)
def test_eval_7 (self) :
v = collatz_eval(10, 10)
self.assert_(v == 7)
def test_eval_8 (self) :
v = collatz_eval(200, 100)
self.assert_(v == 125)
# -----
# print
# -----
def test_print1 (self) :
w = StringIO.StringIO()
collatz_print(w, 1, 10, 20)
self.assert_(w.getvalue() == "1 10 20\n")
def test_print2 (self) :
w = StringIO.StringIO()
collatz_print(w, 2, 1, 2)
self.assert_(w.getvalue() == "2 1 2\n")
def test_print3 (self) :
w = StringIO.StringIO()
collatz_print(w, 5, 5, 6)
self.assert_(w.getvalue() == "5 5 6\n")
def test_print4 (self) :
w = StringIO.StringIO()
collatz_print(w, 105150105, 15066406, 1230)
self.assert_(w.getvalue() == "105150105 15066406 1230\n")
# -----
# solve
# -----
def test_solve1 (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_solve2 (self) :
r = StringIO.StringIO("1 1\n")
w = StringIO.StringIO()
collatz_solve(r, w)
self.assert_(w.getvalue() == "1 1 1\n")
def test_solve3 (self) :
r = StringIO.StringIO("10 1\n200 100\n210 201\n1000 900\n")
w = StringIO.StringIO()
collatz_solve(r, w)
self.assert_(w.getvalue() == "10 1 20\n200 100 125\n210 201 89\n1000 900 174\n")
def test_solve4 (self) :
r = StringIO.StringIO("5 5\n")
w = StringIO.StringIO()
collatz_solve(r, w)
self.assert_(w.getvalue() == "5 5 6\n")
#----
# eval_num
#
def test_eval_num1 (self):
cycle = collatz_eval_num(1)
self.assert_(cycle==1)
def test_eval_num2 (self):
cycle = collatz_eval_num(5)
self.assert_(cycle==6)
def test_eval_num3 (self):
cycle = collatz_eval_num(2)
self.assert_(cycle==2)
# ----
# main
# ----
print "TestCollatz.py"
unittest.main()
print "Done."