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adammenz-TestCollatz.py
executable file
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/
adammenz-TestCollatz.py
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#!/usr/bin/env python
"""
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_function, collatz_max_cycle
# -----------
# TestCollatz
# -----------
class TestCollatz (unittest.TestCase) :
# ----
# read
# ----
def test_read (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("1000 134\n")
a = [0, 0]
b = collatz_read(r, a)
self.assert_(b == True)
self.assert_(a[0] == 1000)
self.assert_(a[1] == 134)
def test_read_3 (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_read_4 (self) :
r = StringIO.StringIO("1 1000000\n")
a = [0, 0]
b = collatz_read(r, a)
self.assert_(b == True)
self.assert_(a[0] == 1)
self.assert_(a[1] == 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(1000, 900)
self.assert_(v == 174)
def test_eval_6 (self) :
v = collatz_eval(210, 201)
self.assert_(v == 89)
def test_eval_7 (self) :
v = collatz_eval(5, 5)
self.assert_(v == 6)
# -----
# 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, 123, 456, 789)
self.assert_(w.getvalue() == "123 456 789\n")
def test_print_3 (self) :
w = StringIO.StringIO()
collatz_print(w, 999, 111, 0)
self.assert_(w.getvalue() == "999 111 0\n")
def test_print_4 (self) :
w = StringIO.StringIO()
collatz_print(w, 42, 42, 42)
self.assert_(w.getvalue() == "42 42 42\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("456 123\n123 456\n")
w = StringIO.StringIO()
collatz_solve(r, w)
self.assert_(w.getvalue() == "456 123 144\n123 456 144\n")
def test_solve_3 (self) :
r = StringIO.StringIO("999 10000\n10000 20011\n")
w = StringIO.StringIO()
collatz_solve(r, w)
self.assert_(w.getvalue() == "999 10000 262\n10000 20011 279\n")
def test_solve_4 (self) :
r = StringIO.StringIO("24356 121536\n45454 21315\n")
w = StringIO.StringIO()
collatz_solve(r, w)
self.assert_(w.getvalue() == "24356 121536 354\n45454 21315 324\n")
# -----
# function
# -----
def test_function_1 (self) :
r = collatz_function(1)
self.assert_(r == 1)
def test_function_2 (self) :
r = collatz_function(5)
self.assert_(r == 6)
def test_function_3 (self) :
r = collatz_function(3)
self.assert_(r == 8)
def test_function_4 (self) :
r = collatz_function(555)
self.assert_(r == 31)
# -----
# max_cycles
# -----
def test_max_cycles_1 (self) :
r = collatz_max_cycle(1, 10)
self.assert_(r == 20)
def test_max_cycles_2 (self) :
r = collatz_max_cycle(800000, 1000000)
self.assert_(r == 525)
def test_max_cycles_3 (self) :
r = collatz_max_cycle(1, 200000)
self.assert_(r == 383)
def test_max_cycles_4 (self) :
r = collatz_max_cycle(123, 456)
self.assert_(r == 144)
def test_max_cycles_6 (self) :
l = collatz_max_cycle(3367, 159873)
r = collatz_max_cycle(159873, 3367)
self.assert_(l == r)
# ----
# main
# ----
print "TestCollatz.py"
unittest.main()
print "Done."