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mjv732-TestCollatz.py
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mjv732-TestCollatz.py
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#!/usr/bin/env python3
# -------------------------------
# projects/collatz/TestCollatz.py
# Copyright (C) 2016
# Glenn P. Downing
# -------------------------------
# https://docs.python.org/3.4/reference/simple_stmts.html#grammar-token-assert_stmt
# -------
# imports
# -------
from io import StringIO
from unittest import main, TestCase
from Collatz import collatz_read, collatz_eval, collatz_print, collatz_solve, round_num, eval_current
# -----------
# TestCollatz
# -----------
class TestCollatz(TestCase):
# ---------
# round_num
# ---------
def test_round_num_1(self):
n = 304
r = round_num(n, True, 500)
self.assertEqual(r, 500)
def test_round_num_2(self):
n = 1322
r = round_num(n, False, 1000)
self.assertEqual(r, 1000)
def test_round_num_3(self):
n = 10212
r = round_num(n, False, 100000)
self.assertEqual(r, 0)
def test_round_num_4(self):
n = 10212
r = round_num(n, True, 100000)
self.assertEqual(r, 100000)
def test_round_num_5(self):
n = 1000
r = round_num(n, False, 1000)
self.assertEqual(r, 1000)
# ----
# read
# ----
def test_read_1(self):
s = "1 10\n"
i, j = collatz_read(s)
self.assertEqual(i, 1)
self.assertEqual(j, 10)
def test_read_2(self):
s = "\n"
i, j = collatz_read(s)
self.assertEqual(i, -1)
self.assertEqual(j, -1)
# ------------
# eval_current
# ------------
def test_eval_current_1(self):
n = eval_current(8)
self.assertEqual(n, 4)
def test_eval_current_2(self):
n = eval_current(5)
self.assertEqual(n, 6)
# ----
# eval
# ----
def test_eval_1(self):
v = collatz_eval(1, 10)
self.assertEqual(v, 20)
def test_eval_2(self):
v = collatz_eval(100, 200)
self.assertEqual(v, 125)
def test_eval_3(self):
v = collatz_eval(201, 210)
self.assertEqual(v, 89)
def test_eval_4(self):
v = collatz_eval(900, 1000)
self.assertEqual(v, 174)
def test_eval_5(self):
v = collatz_eval(500, 2500)
self.assertEqual(v, 209)
def test_eval_6(self):
v = collatz_eval(10, 1)
self.assertEqual(v, 20)
# -----
# print
# -----
def test_print(self):
w = StringIO()
collatz_print(w, 1, 10, 20)
self.assertEqual(w.getvalue(), "1 10 20")
# -----
# solve
# -----
def test_solve_1(self):
r = StringIO("1 10\n100 200\n201 210\n900 1000\n")
w = StringIO()
collatz_solve(r, w)
self.assertEqual(
w.getvalue(), "1 10 20\n100 200 125\n201 210 89\n900 1000 174")
def test_solve_2(self):
r = StringIO("1 10\n200 100\n\n201 210\n900 1000\n")
w = StringIO()
collatz_solve(r, w)
self.assertEqual(
w.getvalue(), "1 10 20\n200 100 125\n201 210 89\n900 1000 174")
# ----
# main
# ----
if __name__ == "__main__":
main()