test_roslib_rostime.py

Go to the documentation of this file.

# Software License Agreement (BSD License)
#
# Copyright (c) 2009, Willow Garage, Inc.
# 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 Willow Garage, Inc. 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.
import roslib; roslib.load_manifest('test_roslib')

import os
import sys
import unittest

import roslib.rostime
import rosunit

class RostimeTest(unittest.TestCase):
  
  def test_TVal(self, TVal=None, test_neg=True):
      if TVal is None:
          # cannot set as default arg because --cov option reloads the module and causes
          # spurious failure
          TVal=roslib.rostime.TVal
      # test constructor
      # - test zero
      v = TVal()
      self.assert_(repr(v))
      self.assert_(str(v))      
      self.assertEquals(0, v.secs)
      self.assertEquals(0, v.nsecs)
      self.failIf(v) # test __zero__
      self.assert_(v.is_zero())
      self.assertEquals('0', str(v))
      self.assertEquals(0, v.to_nsec())      
      self.assertEquals(0, v.to_sec())

      self.assertEquals(v, v)
      self.assertEquals(v, TVal())
      self.assertEquals(v, TVal(0))
      self.assertEquals(v, TVal(0, 0))
      self.assertEquals(v.__hash__(), TVal(0, 0).__hash__())
      
      self.assert_(v != TVal(0,1))
      self.assert_(v >= TVal())
      self.assert_(v <= TVal())
      self.assert_(v < TVal(0,1))
      self.assert_(TVal(0,1) > v)
      v.set(0, 0)
      self.assertEquals(0, v.secs)
      self.assertEquals(0, v.nsecs)
      v.set(1, 0)
      self.assertEquals(1, v.secs)
      self.assertEquals(0, v.nsecs)
      v.set(0, 1)
      self.assertEquals(0, v.secs)
      self.assertEquals(1, v.nsecs)
      # - set does _not_ canonicalize
      v.set(0, 1000000000)
      self.assertEquals(0, v.secs)
      self.assertEquals(1000000000, v.nsecs)
      v.canon()
      self.assertEquals(1, v.secs)
      self.assertEquals(0, v.nsecs)

      # - test seconds
      v = TVal(1)
      self.assertEquals(1, v.secs)
      self.assertEquals(0, v.nsecs)
      self.assert_(v) # test __zero__
      self.failIf(v.is_zero())
      self.assertEquals('1000000000', str(v))
      self.assertEquals(1000000000, v.to_nsec())
      self.assertEquals(v, v)
      self.assertEquals(v, TVal(1))
      self.assertEquals(v, TVal(1, 0))
      self.assertEquals(v, TVal(0,1000000000))
      self.assertEquals(v.__hash__(), TVal(0,1000000000).__hash__())      
      self.assertNotEquals(v, TVal(0, 0))
      self.assertNotEquals(v.__hash__(), TVal(0, 0).__hash__())      
      self.assertEquals(NotImplemented, v.__ge__(0))
      class Foo(object): pass
      self.assertEquals(NotImplemented, v.__gt__(Foo()))
      self.assertEquals(NotImplemented, v.__ge__(Foo()))
      self.assertEquals(NotImplemented, v.__le__(Foo()))
      self.assertEquals(NotImplemented, v.__lt__(Foo()))
      self.failIf(v.__eq__(Foo()))
      self.assert_(v.__ne__(Foo()))
      self.assert_(v >= TVal())
      self.assert_(v <= TVal(1))
      self.assert_(v <= TVal(1,0))
      self.assert_(v <= TVal(2,0))
      self.assert_(v < TVal(2))
      self.assert_(v < TVal(1,1))
      self.assert_(TVal(1,1) > v)
      self.assert_(TVal(2) > v)      
      # - test ns
      v = TVal(0, 1)
      self.assertEquals(0, v.secs)
      self.assertEquals(1, v.nsecs)
      self.assert_(v) # test __zero__
      self.failIf(v.is_zero())
      self.assertEquals('1', str(v))
      self.assertEquals(1, v.to_nsec())
      self.assertEquals(v, v)
      self.assertEquals(v, TVal(0,1))
      self.assertNotEquals(v, TVal(0, 0))
      self.assert_(v >= TVal())
      self.assert_(v <= TVal(1))
      self.assert_(v <= TVal(0,1))
      self.assert_(v <= TVal(2,0))
      self.assert_(v < TVal(0,2))
      self.assert_(v < TVal(1))
      self.assert_(TVal(1) > v)
      self.assert_(TVal(0,2) > v)      
      # - test canon
      v = TVal(1, 1000000000)
      self.assertEquals(2, v.secs)
      self.assertEquals(0, v.nsecs)
      self.assertEquals(2, v.to_sec())
      self.assertEquals(2000000000, v.to_nsec())
      
      v = TVal(1, 1000000001)
      self.assertEquals(2, v.secs)
      self.assertEquals(1, v.nsecs)
      self.assertEquals(2.000000001, v.to_sec())
      self.assertEquals(2000000001, v.to_nsec())
      
      v = TVal(1, -1000000000)
      self.assertEquals(0, v.secs)
      self.assertEquals(0, v.nsecs)
      v = TVal(1, -999999999)
      self.assertEquals(0, v.secs)
      self.assertEquals(1, v.nsecs)
      self.assertEquals(0.000000001, v.to_sec())
      self.assertEquals(1, v.to_nsec())

      if test_neg:
          v = TVal(-1, -1000000000)
          self.assertEquals(-2, v.secs)
          self.assertEquals(0, v.nsecs)
          self.assertEquals(-2, v.to_sec())
          self.assertEquals(-2000000000, v.to_nsec())

          v = TVal(-2, 1000000000)
          self.assertEquals(-1, v.secs)
          self.assertEquals(0, v.nsecs)
          self.assertEquals(-1, v.to_sec())
          self.assertEquals(-1000000000, v.to_nsec())

          
      # test some more hashes
      self.assertEquals(TVal(1).__hash__(), TVal(1).__hash__())
      self.assertEquals(TVal(1,1).__hash__(), TVal(1,1).__hash__())
      self.assertNotEquals(TVal(1).__hash__(), TVal(2).__hash__())
      self.assertNotEquals(TVal(1,1).__hash__(), TVal(1,2).__hash__())            
      self.assertNotEquals(TVal(1,1).__hash__(), TVal(2,1).__hash__())            

  def test_Time(self):
      Time = roslib.rostime.Time
      Duration = roslib.rostime.Duration
      self.test_TVal(TVal=Time, test_neg=False)

      # #1600 Duration > Time should fail
      failed = False
      try:
        v = Duration.from_sec(0.1) > Time.from_sec(0.5)
        failed = True
      except: pass
      self.failIf(failed, "should have failed to compare")
      try:
        v = Time.from_sec(0.4) > Duration.from_sec(0.1)
        failed = True        
      except: pass
      self.failIf(failed, "should have failed to compare")
      
      # TODO: sub

      # neg time fails
      try:
          Time(-1)
          failed = True
      except: pass
      self.failIf(failed, "negative time not allowed")
      try:
          Time(1, -1000000001)
          failed = True
      except: pass
      self.failIf(failed, "negative time not allowed")

      # test Time.now() is within 10 seconds of actual time (really generous)
      import time
      t = time.time()
      v = Time.from_sec(t)
      self.assertEquals(v.to_sec(), t)      
      # test from_sec()
      self.assertEquals(Time.from_sec(0), Time())
      self.assertEquals(Time.from_sec(1.), Time(1))
      self.assertEquals(Time.from_sec(v.to_sec()), v)
      self.assertEquals(v.from_sec(v.to_sec()), v)
      # test to_time()
      self.assertEquals(v.to_sec(), v.to_time())
      
      # test addition
      # - time + time fails
      try:
          v = Time(1,0) + Time(1, 0)
          failed = True
      except: pass
      self.failIf(failed, "Time + Time must fail")

      # - time + duration
      v = Time(1,0) + Duration(1, 0)
      self.assertEquals(Time(2, 0), v)
      v = Duration(1, 0) + Time(1,0)
      self.assertEquals(Time(2, 0), v)
      v = Time(1,1) + Duration(1, 1)
      self.assertEquals(Time(2, 2), v)
      v = Duration(1, 1) + Time(1,1)
      self.assertEquals(Time(2, 2), v)

      v = Time(1) + Duration(0, 1000000000)
      self.assertEquals(Time(2), v)
      v = Duration(1) + Time(0, 1000000000)
      self.assertEquals(Time(2), v)

      v = Time(100, 100) + Duration(300)
      self.assertEquals(Time(400, 100), v)
      v = Duration(300) + Time(100, 100)
      self.assertEquals(Time(400, 100), v)

      v = Time(100, 100) + Duration(300, 300)
      self.assertEquals(Time(400, 400), v)
      v = Duration(300, 300) + Time(100, 100)
      self.assertEquals(Time(400, 400), v)

      v = Time(100, 100) + Duration(300, -101)
      self.assertEquals(Time(399, 999999999), v)
      v =  Duration(300, -101) + Time(100, 100)
      self.assertEquals(Time(399, 999999999), v)

      # test subtraction
      try:
          v = Time(1,0) - 1
          failed = True
      except: pass
      self.failIf(failed, "Time - non Duration must fail")
      class Foob(object): pass      
      try:
          v = Time(1,0) - Foob()
          failed = True          
      except: pass
      self.failIf(failed, "Time - non TVal must fail")

      # - Time - Duration
      v = Time(1,0) - Duration(1, 0)
      self.assertEquals(Time(), v)

      v = Time(1,1) - Duration(-1, -1)
      self.assertEquals(Time(2, 2), v)
      v = Time(1) - Duration(0, 1000000000)
      self.assertEquals(Time(), v)
      v = Time(2) - Duration(0, 1000000000)
      self.assertEquals(Time(1), v)
      v = Time(400, 100) - Duration(300)
      self.assertEquals(Time(100, 100), v)
      v = Time(100, 100) - Duration(0, 101)
      self.assertEquals(Time(99, 999999999), v)

      # - Time - Time = Duration      
      v = Time(100, 100) - Time(100, 100)
      self.assertEquals(Duration(), v)
      v = Time(100, 100) - Time(100)
      self.assertEquals(Duration(0,100), v)
      v = Time(100) - Time(200)
      self.assertEquals(Duration(-100), v)
      
      # Time (float secs) vs. Time(int, int)
      self.assertEquals(Time.from_sec(0.5), Time(0.5))
      t = Time(0.5)
      self.assert_(type(t.secs) == int)
      self.assertEquals(0, t.secs)
      self.assertEquals(500000000, t.nsecs)

      try:
        Time(0.5, 0.5)
        self.fail("should have thrown value error")
      except ValueError: pass

  def test_Duration(self):
      Duration = roslib.rostime.Duration
      self.test_TVal(TVal=Duration, test_neg=True)

      # test from_sec
      v = Duration(1000)
      self.assertEquals(v, Duration.from_sec(v.to_sec()))
      self.assertEquals(v, v.from_sec(v.to_sec()))
      v = Duration(0,1000)
      self.assertEquals(v, Duration.from_sec(v.to_sec()))
      self.assertEquals(v, v.from_sec(v.to_sec()))

      # test neg
      v = -Duration(1, -1)
      self.assertEquals(-1, v.secs)
      self.assertEquals(1, v.nsecs)
      v = -Duration(-1, -1)
      self.assertEquals(1, v.secs)
      self.assertEquals(1, v.nsecs)
      v = -Duration(-1, 1)
      self.assertEquals(0, v.secs)
      self.assertEquals(999999999, v.nsecs)
      
      # test addition
      failed = False
      try:
          v = Duration(1,0) + Time(1, 0)
          failed = True
      except: pass
      self.failIf(failed, "Duration + Time must fail")
      try:
          v = Duration(1,0) + 1
          failed = True
      except: pass
      self.failIf(failed, "Duration + int must fail")
          
      v = Duration(1,0) + Duration(1, 0)
      self.assertEquals(2, v.secs)
      self.assertEquals(0, v.nsecs)
      self.assertEquals(Duration(2, 0), v)
      v = Duration(-1,-1) + Duration(1, 1)
      self.assertEquals(0, v.secs)
      self.assertEquals(0, v.nsecs)
      self.assertEquals(Duration(), v)
      v = Duration(1) + Duration(0, 1000000000)
      self.assertEquals(2, v.secs)
      self.assertEquals(0, v.nsecs)
      self.assertEquals(Duration(2), v)
      v = Duration(100, 100) + Duration(300)
      self.assertEquals(Duration(400, 100), v)
      v = Duration(100, 100) + Duration(300, 300)
      self.assertEquals(Duration(400, 400), v)
      v = Duration(100, 100) + Duration(300, -101)
      self.assertEquals(Duration(399, 999999999), v)
      
      # test subtraction
      try:
          v = Duration(1,0) - 1
          failed = True
      except: pass
      self.failIf(failed, "Duration - non duration must fail")
      try:
          v = Duration(1, 0) - Time(1,0)
          failed = True          
      except: pass
      self.failIf(failed, "Duration - Time must fail")
      
      v = Duration(1,0) - Duration(1, 0)
      self.assertEquals(Duration(), v)
      v = Duration(-1,-1) - Duration(1, 1)
      self.assertEquals(Duration(-3, 999999998), v)
      v = Duration(1) - Duration(0, 1000000000)
      self.assertEquals(Duration(), v)
      v = Duration(2) - Duration(0, 1000000000)
      self.assertEquals(Duration(1), v)
      v = Duration(100, 100) - Duration(300)
      self.assertEquals(Duration(-200, 100), v)
      v = Duration(100, 100) - Duration(300, 101)
      self.assertEquals(Duration(-201, 999999999), v)

      # test abs
      self.assertEquals(abs(Duration()), Duration())
      self.assertEquals(abs(Duration(1)), Duration(1))      
      self.assertEquals(abs(Duration(-1)), Duration(1))
      self.assertEquals(abs(Duration(0,-1)), Duration(0,1))
      self.assertEquals(abs(Duration(-1,-1)), Duration(1,1))
      
      # Duration (float secs) vs. Duration(int, int)
      self.assertEquals(Duration.from_sec(0.5), Duration(0.5))
      t = Duration(0.5)
      self.assert_(type(t.secs) == int)
      self.assertEquals(0, t.secs)
      self.assertEquals(500000000, t.nsecs)

      try:
        Duration(0.5, 0.5)
        self.fail("should have thrown value error")
      except ValueError: pass

      # Test mul 
      self.assertEquals(Duration(4), Duration(2) * 2)
      self.assertEquals(Duration(4), Duration(2) * 2.)
      self.assertEquals(Duration(10), Duration(4) * 2.5)
      self.assertEquals(Duration(4, 8), Duration(2, 4) * 2)
      v = Duration(4, 8) - (Duration(2, 4) * 2.)
      self.assert_(abs(v.to_nsec()) < 100)
      v = Duration(5, 10) - (Duration(2, 4) * 2.5)
      self.assert_(abs(v.to_nsec()) < 100)      
      
      # Test div
      self.assertEquals(Duration(4), Duration(8) / 2)
      self.assertEquals(Duration(4), Duration(8) / 2.)      
      self.assertEquals(Duration(4), Duration(8) // 2)      
      self.assertEquals(Duration(4), Duration(8) // 2.)      
      self.assertEquals(Duration(4), Duration(9) // 2)      
      self.assertEquals(Duration(4), Duration(9) // 2.)      
      self.assertEquals(Duration(4, 2), Duration(8, 4) / 2)
      v = Duration(4, 2) - (Duration(8, 4) / 2.)
      self.assert_(abs(v.to_nsec()) < 100)            
      
      self.assertEquals(Duration(4, 2), Duration(8, 4) // 2)
      self.assertEquals(Duration(4, 2), Duration(9, 5) // 2)
      v = Duration(4, 2) - (Duration(9, 5) // 2.)
      self.assert_(abs(v.to_nsec()) < 100)                  
      
if __name__ == '__main__':
  rosunit.unitrun('test_roslib', 'test_rostime', RostimeTest, coverage_packages=['roslib.rostime'])

---

test_roslib
Author(s): Jeremy Leibs/leibs@willowgarage.com, Ken Conley/kwc@willowgarage.com
autogenerated on Fri Jan 11 11:20:54 2013