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ch34698-TestCollatz.py
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ch34698-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_length, collatz_eval, collatz_print, collatz_solve
# -----------
# 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)
# 3 test_read's by Charlina
def test_read_1 (self) :
s = "0 0\n"
i, j = collatz_read(s)
self.assertEqual(i, 0)
self.assertEqual(j, 0)
def test_read_2 (self) :
s = "10 1\n"
i, j = collatz_read(s)
self.assertEqual(i, 10)
self.assertEqual(j, 1)
def test_read_3 (self) :
s = "99999 -5"
i, j = collatz_read(s)
self.assertEqual(i, 99999)
self.assertEqual(j, -5)
# ------
# length
# ------
def test_length_1 (self) :
k = collatz_length(1)
self.assertEqual(k, 1)
def test_length_2 (self) :
k = collatz_length(10)
self.assertEqual(k, 7)
def test_length_3 (self) :
k = collatz_length(2)
self.assertEqual(k, 2)
# ----
# 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)
# 3 test_eval's by Charlina
def test_eval_5 (self) :
v = collatz_eval(1, 1)
self.assertEqual(v, 1)
def test_eval_6 (self) :
v = collatz_eval(10, 1)
self.assertEqual(v, 20)
def test_eval_7 (self) :
v = collatz_eval(400000, 500000)
self.assertEqual(v, 449)
# -----
# print
# -----
def test_print (self) :
w = StringIO()
collatz_print(w, 1, 10, 20)
self.assertEqual(w.getvalue(), "1 10 20\n")
# 3 test_print's by Charlina
def test_print_1 (self) :
w = StringIO()
collatz_print(w, 0, 0, 0)
self.assertEqual(w.getvalue(), "0 0 0\n")
def test_print_2 (self) :
w = StringIO()
collatz_print(w, 0, 1, -5)
self.assertEqual(w.getvalue(), "0 1 -5\n")
def test_print_3 (self) :
w = StringIO()
collatz_print(w, 999, 9999, 99999)
self.assertEqual(w.getvalue(), "999 9999 99999\n")
# -----
# solve
# -----
def test_solve (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")
# 3 test_solve's by Charlina
def test_solve_1 (self) :
r = StringIO("1 1\n2 2\n")
w = StringIO()
collatz_solve(r, w)
self.assertEqual(w.getvalue(), "1 1 1\n2 2 2\n")
def test_solve_2 (self) :
r = StringIO("10 1\n 10 10\n")
w = StringIO()
collatz_solve(r, w)
self.assertEqual(w.getvalue(), "10 1 20\n10 10 7\n")
def test_solve_3 (self) :
r = StringIO("5000 6000\n9995 10000\n")
w = StringIO()
collatz_solve(r, w)
self.assertEqual(w.getvalue(), "5000 6000 236\n9995 10000 180\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%
"""