/*
 *  test_iaf_min_delay_create.sli
 *
 *  This file is part of NEST.
 *
 *  Copyright (C) 2004 The NEST Initiative
 *
 *  NEST is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation, either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  NEST is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with NEST.  If not, see <http://www.gnu.org/licenses/>.
 *
 */

 /* BeginDocumentation
Name: testsuite::test_iaf_min_delay_create - sli script for testing automatic adjustment of min_delay

Synopsis: (test_iaf_min_delay_create) run -> compares results for different min_delays


Description:

  The simulation is run with a range of different min_delays. All
  should give identical results. This is achieved by sampling the
  membrane potential at a fixed interval.

  The min_delay is specified by creating a corresponding
  connection.  The companion test test_iaf_min_delay_set sets 
  the value explicitly as a default value of the synapse type.

  Other test scripts discuss the various aspects of this script in detail,
  see the SeeAlso key below. If this test fails go back to the simpler ones.

Author:  July 2004, Diesmann, January 2005, Plesser, September 2010, Diesmann
SeeAlso: iaf_neuron, testsuite::test_iaf_i0, testsuite::test_iaf_i0_refractory, testsuite::test_iaf_dc, testsuite::test_min_delay, testsuite::test_min_delay
*/

/unittest (6335) require
/unittest using


/delay 2.0 def  % actual delay between dc generator and neuron
/h 0.1 def      % computation step size

/RunMinDelay {

  /min_del  Set      % argument: minimal delay in ms
  min_del delay leq assert  

  ResetKernel

  0 << /local_num_threads 1 /resolution h >> SetStatus

  /iaf_neuron Create 
  /iaf_neuron Create 
  1.0 min_del Connect

  /iaf_neuron Create /neuron Set  

  /dc_generator Create /dc_gen Set
  dc_gen <<  /amplitude 1000. >> SetStatus

  /voltmeter Create /vm Set
  vm << /withtime true >> SetStatus

  % must connect with explicit delay to assure
  % consistency as min_delay varies      
  dc_gen neuron 1.0 delay Connect

  vm neuron Connect

  10.5 Simulate   % vm samples at 1ms intervals, therefore we 
                  % get 10 data points for each min_elay if we make
                  % sure that simulation time exceeds the last required 
                  % min_delay step

  vm [/events [/times /V_m]] get cva Transpose 

} def


{
[0.1 0.2 0.3 0.4 0.5 0.6 1.0 2.0] 
 {RunMinDelay} Map 
 dup
 First exch Rest {1 index eq } Map 
 exch pop
 true exch {and} Fold 
}
assert_or_die