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TestCollatz.py
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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
# -----------
# TestCollatz
# -----------
class TestCollatz (TestCase) :
# ----
# read
# ----
def test_read_1 (self) :
r = StringIO("1 10\n100 200\n201 210\n900 1000\n")
i, j = collatz_read(r)
self.assertEqual(i, 1)
self.assertEqual(j, 10)
def test_read_2 (self) :
r = StringIO("1 10\n100 200\n201 210\n900 1000\n")
r.readline()
r.readline()
i, j = collatz_read(r)
self.assertEqual(i, 201)
self.assertEqual(j, 210)
def test_read_3 (self) :
r = StringIO("1 10\n100 200\n201 210\n900 1000\n")
r.readline()
r.readline()
r.readline()
r.readline()
self.assertEqual(len(collatz_read(r)), 0)
# ----
# 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)
# -----
# print
# -----
def test_print_1 (self) :
w = StringIO()
collatz_print(w, 1, 10, collatz_eval(1, 10))
self.assertEqual(w.getvalue(), "1 10 20\n")
def test_print_2 (self) :
w = StringIO()
collatz_print(w, 100, 200, collatz_eval(100, 200))
self.assertEqual(w.getvalue(), "100 200 125\n")
def test_print_3 (self) :
w = StringIO()
collatz_print(w, 201, 210, collatz_eval(201, 210))
self.assertEqual(w.getvalue(), "201 210 89\n")
def test_print_4 (self) :
w = StringIO()
collatz_print(w, 900, 1000, collatz_eval(900, 1000))
self.assertEqual(w.getvalue(), "900 1000 174\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("")
w = StringIO()
collatz_solve(r, w)
self.assertEqual(w.getvalue(), '')
# ----
# main
# ----
main()
"""
% coverage3 run --branch TestCollatz.py > TestCollatz.out.txt 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 32 1 0 0 97% 78
---------------------------------------------------------
TOTAL 50 1 6 0 98%
"""