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alextang-TestCollatz.py
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alextang-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, collatz_eval, collatz_print, collatz_solve, collatz_length
# -----------
# 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_1 (self) :
r = io.StringIO("")
a = [0, 0]
b = collatz_read(r, a)
i, j = a
self.assertTrue(b == False)
self.assertTrue(i == 0)
self.assertTrue(j == 0)
def test_read_2 (self) :
r = io.StringIO("345 678\n")
a = [0, 0]
b = collatz_read(r, a)
i, j = a
self.assertTrue(b == True)
self.assertTrue(i == 345)
self.assertTrue(j == 678)
def test_read_3 (self) :
r = io.StringIO("450 11\n")
a = [0, 0]
b = collatz_read(r, a)
i, j = a
self.assertTrue(b == True)
self.assertTrue(i == 450)
self.assertTrue(j == 11)
# ------
# length
# ------
def test_length_1 (self) :
c = collatz_length(7)
self.assertTrue(c == 17)
def test_length_2 (self) :
c = collatz_length(34)
self.assertTrue(c == 14)
def test_length_3 (self) :
c = collatz_length(100)
self.assertTrue(c == 26)
# ----
# eval
# ----
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(1, 3)
self.assertTrue(v == 8)
# -----
# 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_1 (self) :
w = io.StringIO()
collatz_print(w, 5, 6, 7)
self.assertTrue(w.getvalue() == "5 6 7\n")
def test_print_2 (self) :
w = io.StringIO()
collatz_print(w, 11, 1, 111)
self.assertTrue(w.getvalue() == "11 1 111\n")
def test_print_3 (self) :
w = io.StringIO()
collatz_print(w, 10, 67, 1)
self.assertTrue(w.getvalue() == "10 67 1\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")
def test_solve_1 (self) :
r = io.StringIO("1 3\n1 6\n1 3\n")
w = io.StringIO()
collatz_solve(r, w)
self.assertTrue(w.getvalue() == "1 3 8\n1 6 9\n1 3 8\n")
def test_solve_2 (self) :
r = io.StringIO("10 1\n200 100\n210 201\n1000 900\n")
w = io.StringIO()
collatz_solve(r, w)
self.assertTrue(w.getvalue() == "10 1 20\n200 100 125\n210 201 89\n1000 900 174\n")
def test_solve_3 (self) :
r = io.StringIO("10 11\n10 11")
w = io.StringIO()
collatz_solve(r, w)
self.assertTrue(w.getvalue() == "10 11 15\n10 11 15\n")
# ----
# main
# ----
print("TestCollatz.py")
unittest.main()
print("Done.")