test/src/test_vopt.cpp

   1 /* Copyright_License {
   2
   3   XCSoar Glide Computer - http://www.xcsoar.org/
   4   Copyright (C) 2000-2013 The XCSoar Project
   5   A detailed list of copyright holders can be found in the file "AUTHORS".
   6
   7   This program is free software; you can redistribute it and/or
   8   modify it under the terms of the GNU General Public License
   9   as published by the Free Software Foundation; either version 2
  10   of the License, or (at your option) any later version.
  11
  12   This program is distributed in the hope that it will be useful,
  13   but WITHOUT ANY WARRANTY; without even the implied warranty of
  14   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15   GNU General Public License for more details.
  16
  17   You should have received a copy of the GNU General Public License
  18   along with this program; if not, write to the Free Software
  19   Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  20 }
  21 */
  22
  23 #include "harness_flight.hpp"
  24 #include "harness_wind.hpp"
  25
  26 static bool
  27 test_speed_factor(int test_num, int n_wind)
  28 {
  29   // flying at opt speed should be minimum time flight!
  30
  31   double te0, te1, te2;
  32
  33   TestFlightResult result = test_flight(test_num, n_wind, 1.0);
  34   te0 = result.time_elapsed;
  35
  36   result = test_flight(test_num, n_wind, 0.7);
  37   te1 = result.time_elapsed;
  38   // time of this should be higher than nominal
  39   ok(te0 < te1, GetTestName("vopt slow or", test_num, n_wind), 0);
  40
  41   result = test_flight(test_num, n_wind, 1.5);
  42   te2 = result.time_elapsed;
  43   // time of this should be higher than nominal
  44   ok(te0 < te2, GetTestName("vopt fast or", test_num, n_wind), 0);
  45
  46   bool retval = (te0 < te1) && (te0 < te2);
  47   if (verbose || !retval) {
  48     printf("# sf 0.8 time_elapsed_rat %g\n", te1 / te0);
  49     printf("# sf 1.2 time_elapsed_rat %g\n", te2 / te0);
  50   }
  51   return retval;
  52 }
  53
  54 int
  55 main(int argc, char** argv)
  56 {
  57   // default arguments
  58   autopilot_parms.SetIdeal();
  59
  60   if (!ParseArgs(argc, argv))
  61     return 0;
  62
  63   unsigned i = rand() % NUM_WIND;
  64   plan_tests(2);
  65
  66   // tests whether flying at VOpt for OR task is optimal
  67   test_speed_factor(3, i);
  68   return exit_status();
  69 }