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#!/usr/bin/env python
######################################################################
# Software License Agreement (BSD License)
#
# Copyright (c) 2010, Rice University
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
#
# * Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# * Redistributions in binary form must reproduce the above
# copyright notice, this list of conditions and the following
# disclaimer in the documentation and/or other materials provided
# with the distribution.
# * Neither the name of the Rice University nor the names of its
# contributors may be used to endorse or promote products derived
# from this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.
######################################################################
# Author: Mark Moll
import unittest
import sys
from os.path import abspath, dirname, join
sys.path.insert(0, join(dirname(dirname(dirname(abspath(__file__)))), 'py-bindings'))
from ompl.util import *
class TestRNG(unittest.TestCase):
def testDifferentSeeds(self):
r = [RNG() for i in range(4)]
same = 0
eq = 0
N = 100
for _ in range(N):
v = [r[j].uniformInt(0, 100) for j in range(4)]
if v[0] == v[1] and v[1] == v[2] and v[2] == v[3] and v[3] == v[4]:
eq = eq + 1
for j in range(4):
if v[j] == r[j].uniformInt(0, 100):
same = same+1
self.assertFalse(eq > N / 2)
self.assertTrue(same < 2 * N)
def testValidRangeInts(self):
r = RNG()
N = 100
V = 10000 * N
c = [0 for i in range(N+1)]
for _ in range(V):
v = r.uniformInt(0, N)
self.assertTrue(v >= 0)
self.assertTrue(v <= N)
c[v] = c[v]+1
for j in c:
self.assertTrue(j > float(V) / float(N) / 3.)
def suite():
suites = (unittest.makeSuite(TestRNG, 'test'))
return unittest.TestSuite(suites)
if __name__ == '__main__':
unittest.main()
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