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ethan-TestCollatz.py
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ethan-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 io
import StringIO
import unittest
from Collatz import collatz_read, collatz_eval, collatz_print, collatz_solve
# -----------
# TestCollatz
# -----------
class TestCollatz (unittest.TestCase) :
# ----
# read
# ----
def test_read_simple (self) :
r = StringIO.StringIO("1 10\n")
m = collatz_read(r)
(i, j) = m.next()
self.assertTrue(i == 1)
self.assertTrue(j == 10)
def test_read_same (self) :
r = StringIO.StringIO("1 1\n")
m = collatz_read(r)
(i, j) = m.next()
self.assertTrue(i == 1)
self.assertTrue(j == 1)
self.assertTrue(j == i)
def test_read_large (self) :
r = StringIO.StringIO("1 999999\n")
m = collatz_read(r)
(i, j) = m.next()
self.assertTrue(i == 1)
self.assertTrue(j == 999999)
def test_read_reverse (self) :
r = StringIO.StringIO("999999 1\n")
m = collatz_read(r)
(i, j) = m.next()
self.assertTrue(i == 999999)
self.assertTrue(j == 1)
# # ----
# # eval
# # ----
def test_eval_1 (self) :
v = collatz_eval((1, 10))
self.assertTrue(v == 20)
def test_eval_2 (self) :
v = collatz_eval((100, 200))
self.assertTrue(v == 125)
def test_eval_3 (self) :
v = collatz_eval((201, 210))
self.assertTrue(v == 89)
def test_eval_4 (self) :
v = collatz_eval((900, 1000))
self.assertTrue(v == 174)
def test_eval_midrange (self) :
v = collatz_eval((30116, 42098))
self.assertTrue(v == 324)
def test_eval_lowbound (self) :
v = collatz_eval((1, 1))
self.assertTrue(v == 1)
def test_eval_highbound (self) :
v = collatz_eval((999999, 999999))
self.assertTrue(v == 259)
# # -----
# # print
# # -----
def test_print (self) :
w = StringIO.StringIO()
collatz_print(w, (1, 10), 20)
self.assertTrue(w.getvalue() == "1 10 20\n")
def test_print_lowbound (self) :
w = StringIO.StringIO()
collatz_print(w, (1, 1), 1)
self.assertTrue(w.getvalue() == "1 1 1\n")
def test_print_highbound (self) :
w = StringIO.StringIO()
collatz_print(w, (999999, 999999), 259)
self.assertTrue(w.getvalue() == "999999 999999 259\n")
def test_print_bigMax (self) :
w = StringIO.StringIO()
collatz_print(w, (12345, 98765), 43210)
self.assertTrue(w.getvalue() == "12345 98765 43210\n")
# # -----
# # solve
# # -----
def test_solve (self) :
r = StringIO.StringIO("1 10\n100 200\n201 210\n900 1000\n")
w = StringIO.StringIO()
collatz_solve(r, w)
self.assertTrue(w.getvalue() == "1 10 20\n100 200 125\n201 210 89\n900 1000 174\n")
def test_solve_empty (self) :
r = StringIO.StringIO("")
w = StringIO.StringIO()
collatz_solve(r, w)
self.assertTrue(w.getvalue() == "")
def test_solve_same (self) :
r = StringIO.StringIO("27 27\n")
w = StringIO.StringIO()
collatz_solve(r, w)
self.assertTrue(w.getvalue() == "27 27 112\n")
# ----
# main
# ----
print("TestCollatz.py")
unittest.main()
print("Done.")