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pstrong-TestCollatz.py
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pstrong-TestCollatz.py
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#!/usr/bin/env python3
# -------------------------------
# projects/collatz/TestCollatz.py
# Copyright (C) 2014
# Paul Strong
# -------------------------------
"""
To test the program:
% python TestCollatz.py > TestCollatz.out
% chmod ugo+x TestCollatz.py
% TestCollatz.py > TestCollatz.out
"""
# -------
# imports
# -------
import io
import unittest
from Collatz import collatz_read, collatz_eval, collatz_print, collatz_solve, collatz_cycles
# -----------
# TestCollatz
# -----------
class TestCollatz (unittest.TestCase) :
# ----
# read
# ----
def test_read (self) :
r = io.StringIO("1 10\n")
m = collatz_read(r)
i, j = list(next(m))
self.assertTrue(i == 1)
self.assertTrue(j == 10)
def test_read_2 (self) :
r = io.StringIO("3245 1451\n")
m = collatz_read(r)
i, j = list(next(m))
self.assertTrue(i == 3245)
self.assertTrue(j == 1451)
def test_read_3 (self) :
r = io.StringIO("820000 999999\n")
m = collatz_read(r)
i, j = list(next(m))
self.assertTrue(i == 820000)
self.assertTrue(j == 999999)
# ----
# 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)
# -----
# cycles
# -----
def test_cycles_1 (self) :
v = collatz_cycles(4)
self.assertTrue(v == 3)
def test_cycles_2 (self) :
v = collatz_cycles(3)
self.assertTrue(v == 8)
def test_cycles_3 (self) :
v = collatz_cycles(18)
self.assertTrue(v == 21)
# -----
# print
# -----
def test_print (self) :
w = io.StringIO()
collatz_print(w, 1, 10, 20)
self.assertTrue(w.getvalue() == "1 10 20\n")
def test_print2 (self) :
w = io.StringIO()
collatz_print(w, 800000, 1000000, 45)
self.assertTrue(w.getvalue() == "800000 1000000 45\n")
def test_print3 (self) :
w = io.StringIO()
collatz_print(w, -5, 10, 45)
self.assertTrue(w.getvalue() == "-5 10 45\n")
# -----
# solve
# -----
def test_solve (self) :
r = io.StringIO("1 10\n100 200\n201 210\n900 1000\n")
w = io.StringIO()
collatz_solve(r, w)
self.assertTrue(w.getvalue() == "1 10 20\n100 200 125\n201 210 89\n900 1000 174\n")
def test_solve2 (self) :
r = io.StringIO("9 10\n1 20\n1 17\n")
w = io.StringIO()
collatz_solve(r, w)
self.assertTrue(w.getvalue() == "9 10 20\n1 20 21\n1 17 20\n")
def test_solve3 (self) :
r = io.StringIO("")
w = io.StringIO()
collatz_solve(r, w)
self.assertTrue(w.getvalue() == "")
# ----
# main
# ----
print("TestCollatz.py")
unittest.main()
print("Done.")