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pma459-TestCollatz.py
executable file
·142 lines (107 loc) · 3.17 KB
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pma459-TestCollatz.py
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#!/usr/bin/env python3
# -------------------------------
# projects/collatz/TestCollatz.py
# Copyright (C) 2014
# Glenn P. Downing
# -------------------------------
# -------
# imports
# -------
from io import StringIO
from unittest import main, TestCase
from Collatz import collatz_read, collatz_eval, collatz_print, collatz_solve, cycle_length
# -----------
# TestCollatz
# -----------
class TestCollatz (TestCase) :
# ----
# read
# ----
def test_read (self) :
s = "1 10\n"
i, j = collatz_read(s)
self.assertEqual(i, 1)
self.assertEqual(j, 10)
# ------------
# cycle_length
# ------------
def test_cycle_length_1 (self) :
v = cycle_length(19)
self.assertEqual(v, 21)
def test_cycle_length_2 (self) :
v = cycle_length(11522)
self.assertEqual(v, 175)
def test_cycle_length_3 (self) :
v = cycle_length(444)
self.assertEqual(v, 72)
# ----
# 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(1, 1)
self.assertEqual(v, 1)
def test_eval_6 (self) :
v = collatz_eval(999999, 999999)
self.assertEqual(v, 259)
def test_eval_7 (self) :
v = collatz_eval(900, 500)
self.assertEqual(v, 179)
def test_eval_8 (self) :
v = collatz_eval(1, 113382)
self.assertEqual(v, 354)
def test_eval_9 (self) :
v = collatz_eval(111111, 111111)
w = cycle_length(111111)
self.assertEqual(v, w)
# -----
# print
# -----
def test_print (self) :
w = StringIO()
collatz_print(w, 1, 10, 20)
self.assertEqual(w.getvalue(), "1 10 20\n")
# -----
# 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\n")
def test_solve_2 (self) :
r = StringIO("10 1\n200 100\n210 201\n1000 900")
w = StringIO();
collatz_solve(r, w)
self.assertEqual(w.getvalue(), "10 1 20\n200 100 125\n210 201 89\n1000 900 174\n")
# ----
# main
# ----
if __name__ == "__main__" :
main()
"""
% coverage3 run --branch TestCollatz.py > TestCollatz.out 2>&1
% coverage3 report -m >> TestCollatz.out
% cat TestCollatz.out
.......
----------------------------------------------------------------------
Ran 7 tests in 0.001s
OK
Name Stmts Miss Branch BrMiss Cover Missing
---------------------------------------------------------
Collatz 18 0 6 0 100%
TestCollatz 33 1 2 1 94% 79
---------------------------------------------------------
TOTAL 51 1 8 1 97%
"""