test/src/test_bestcruisetrack.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_bestcruisetrack(int test_num, int n_wind)
  28 {
  29
  30   // tests whether following the cruise track which compensates for wind drift
  31   // produces routes that are more on track than if the route is allowed to drift
  32   // downwind during climbs
  33
  34   // this test allows for a small error margin
  35
  36   autopilot_parms.enable_bestcruisetrack = false;
  37   TestFlightResult result = test_flight(test_num, n_wind);
  38   double t0 = result.time_elapsed;
  39
  40   autopilot_parms.enable_bestcruisetrack = true;
  41   result = test_flight(test_num, n_wind);
  42   double t1 = result.time_elapsed;
  43   autopilot_parms.enable_bestcruisetrack = false;
  44
  45   bool fine = (t1 / t0 < 1.01);
  46   ok(fine, GetTestName("faster flying with bestcruisetrack", test_num, n_wind),
  47      0);
  48
  49   if (!fine || verbose)
  50     printf("# time ratio %g\n", t1 / t0);
  51
  52   return fine;
  53 }
  54
  55 int
  56 main(int argc, char** argv)
  57 {
  58   // default arguments
  59   autopilot_parms.SetIdeal();
  60
  61   if (!ParseArgs(argc, argv))
  62     return 0;
  63
  64   unsigned i = rand() % (NUM_WIND - 1) + 1;
  65   plan_tests(1);
  66
  67   test_bestcruisetrack(1, i);
  68   return exit_status();
  69 }