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ericcarr-TestCollatz.py
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ericcarr-TestCollatz.py
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#!/usr/bin/env python
# -------------------------------
# projects/collatz/TestCollatz.py
# Copyright (C) 2014
# Glenn P. Downing
# -------------------------------
"""
To test the program:
% python TestCollatz.py > TestCollatz.out
% chmod ugo+x TestCollatz.py
% TestCollatz.py > TestCollatz.out
"""
# -------
# imports
# -------
import StringIO
import unittest
from Collatz import collatz_read, collatz_eval, collatz_print, collatz_solve, get_cycle
# -----------
# TestCollatz
# -----------
class TestCollatz (unittest.TestCase) :
# ----
# read
# ----
def test_read1 (self) :
r = StringIO.StringIO("1 10\n")
p = collatz_read(r)
(i, j) = p.next()
self.assert_(i == 1)
self.assert_(j == 10)
def test_read_2(self):
r = StringIO.StringIO("2 492819\n")
p = collatz_read(r)
(i, j) = p.next()
self.assert_(i == 2)
self.assert_(j == 492819)
def test_read_3(self):
r = StringIO.StringIO("1 1000000\n")
p = collatz_read(r)
(i, j) = p.next()
self.assert_(i == 1)
self.assert_(j == 1000000)
# ----
# 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((40810, 38305))
self.assert_(v == 306)
def test_eval_6 (self):
v = collatz_eval((4253, 3179))
self.assert_(v == 238)
def test_eval_7 (self):
v = collatz_eval((36, 112))
self.assert_(v == 119)
# -----
# 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, (525600, 60), 40)
self.assert_(w.getvalue() == "525600 60 40\n")
def test_print_3 (self):
w = StringIO.StringIO()
collatz_print(w, (1, 2), 3)
self.assert_(w.getvalue() == "1 2 3\n")
def test_print_4 (self):
w = StringIO.StringIO()
collatz_print(w, (525600, 60), 40)
self.assert_(w.getvalue() == "525600 60 40\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("1 1\n15228 66057\n")
w = StringIO.StringIO()
collatz_solve(r, w)
self.assert_(w.getvalue() == "1 1 1\n15228 66057 340\n")
def test_solve_3 (self) :
r = StringIO.StringIO("747 38331\n")
w = StringIO.StringIO()
collatz_solve(r, w)
self.assert_(w.getvalue() == "747 38331 324\n")
def test_get_cycle_1 (self):
self.assert_(get_cycle(1, [0, 0, 0, 0, 0, 0, 0, 0, 0, 0], 1, 10) == 1)
def test_get_cycle_2 (self):
self.assert_(get_cycle(1, [0, 0, 0, 0, 0, 0, 0, 0, 0, 0], 1, 10) == 1)
def test_get_cycle_3 (self):
self.assert_(get_cycle(20, [0, 0, 0, 0, 0, 0, 0, 0, 0, 0], 11, 20) == 8)
# ----
# main
# ----
print "TestCollatz.py"
unittest.main()
print "Done."