[Jsbsim-cvslogs] CVS: JSBSim/tests TestHoldDown.py,1.2,1.3

[Bertrand <bco...@us...>]

Update of /cvsroot/jsbsim/JSBSim/tests
In directory sfp-cvs-1.v30.ch3.sourceforge.com:/tmp/cvs-serv24529/tests

Modified Files:
	TestHoldDown.py 
Log Message:
Added a new test case with ground reactions and check that velocities are zeroed when the hold down feature is enabled.

Index: TestHoldDown.py
===================================================================
RCS file: /cvsroot/jsbsim/JSBSim/tests/TestHoldDown.py,v
retrieving revision 1.2
retrieving revision 1.3
diff -C2 -r1.2 -r1.3
*** TestHoldDown.py	30 Jan 2016 18:50:24 -0000	1.2
--- TestHoldDown.py	16 Apr 2016 11:54:37 -0000	1.3
***************
*** 20,24 ****
  
  import os
! from JSBSim_utils import JSBSimTestCase, CreateFDM, RunTest
  
  
--- 20,24 ----
  
  import os
! from JSBSim_utils import JSBSimTestCase, CreateFDM, RunTest, ExecuteUntil
  
  
***************
*** 39,41 ****
--- 39,68 ----
              self.assertAlmostEqual(fdm['position/h-sl-ft'], h0, delta=1E-5)
  
+     def test_hold_down_with_gnd_reactions(self):
+         fdm = CreateFDM(self.sandbox)
+         fdm.load_script(self.sandbox.path_to_jsbsim_file('scripts',
+                                                          'c1721.xml'))
+         fdm.run_ic()
+         ExecuteUntil(fdm, 0.25)
+ 
+         fdm['forces/hold-down'] = 1.0
+         h0 = fdm['position/h-sl-ft']
+         pitch = fdm['attitude/pitch-rad']
+         roll = fdm['attitude/roll-rad']
+         heading = fdm['attitude/heading-true-rad']
+ 
+         while fdm['simulation/sim-time-sec'] < 2.0:
+             fdm.run()
+             self.assertAlmostEqual(fdm['accelerations/pdot-rad_sec2'], 0.0)
+             self.assertAlmostEqual(fdm['accelerations/qdot-rad_sec2'], 0.0)
+             self.assertAlmostEqual(fdm['accelerations/rdot-rad_sec2'], 0.0)
+             self.assertAlmostEqual(fdm['accelerations/udot-ft_sec2'], 0.0)
+             self.assertAlmostEqual(fdm['accelerations/vdot-ft_sec2'], 0.0)
+             self.assertAlmostEqual(fdm['accelerations/wdot-ft_sec2'], 0.0)
+ 
+         self.assertAlmostEqual(fdm['position/h-sl-ft'], h0, delta=1E-6)
+         self.assertAlmostEqual(fdm['attitude/pitch-rad'], pitch)
+         self.assertAlmostEqual(fdm['attitude/roll-rad'], roll)
+         self.assertAlmostEqual(fdm['attitude/heading-true-rad'], heading)
+ 
  RunTest(TestHoldDown)