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anc2275-TestCollatz.py
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anc2275-TestCollatz.py
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#!/usr/bin/env python3
# -------------------------------
# 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 unittest
from Collatz import collatz_read, cycle, collatz_eval, collatz_print, collatz_solve
# -----------
# TestCollatz
# -----------
class TestCollatz (unittest.TestCase) :
# ----
# read
# ----
def test_read (self) :
r = io.StringIO("1 10\n")
a = [0, 0]
b = collatz_read(r, a)
i, j = a
self.assertTrue(b == True)
self.assertTrue(i == 1)
self.assertTrue(j == 10)
def test_read_extraspace (self) :
r = io.StringIO("1 10\n")
a = [0, 0]
b = collatz_read(r, a)
i, j = a
self.assertTrue(b == True)
self.assertTrue(i == 1)
self.assertTrue(j == 10)
def test_read_nonewline(self) :
r = io.StringIO("1 10")
a = [0, 0]
b = collatz_read(r, a)
i, j = a
self.assertTrue(b == True)
self.assertTrue(i == 1)
self.assertTrue(j == 10)
# -----
# cycle
# -----
def test_cycle_0 (self) :
v = cycle(5)
self.assertTrue(v == 6)
def test_cycle_1 (self) :
v = cycle(1)
self.assertTrue(v == 1)
def test_cycle_1 (self) :
v = cycle(2)
self.assertTrue(v == 2)
# ----
# eval
# ----
def test_eval_0 (self) :
v = collatz_eval(1,5)
self.assertTrue(v == 8)
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_5 (self) :
v = collatz_eval(5000, 6000)
self.assertTrue(v == 236)
def test_corner_case_1 (self) :
v = collatz_eval(1, 1)
self.assertTrue(v == 1)
def test_corner_case_2 (self) :
v = collatz_eval(1, 2)
self.assertTrue(v == 2)
def test_corner_case_3 (self) :
v = collatz_eval(1,1000000)
self.assertTrue(v == 525)
# -----
# print
# -----
def test_print (self) :
w = io.StringIO()
collatz_print(w, 1, 10, 20)
self.assertTrue(w.getvalue() == "1 10 20\n")
def test_print_2 (self) :
w = io.StringIO()
collatz_print(w, 910, 1000, 174)
self.assertTrue(w.getvalue() == "910 1000 174\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")
# ----
# main
# ----
print("TestCollatz.py")
unittest.main()
print("Done.")