# Command: testsuite::ticket-421

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Name:

    testsuite::ticket-421 - Minimal test against missing variable initializations

Synopsis:

    (ticket-421) run -> NEST exits if test fails

Description:

      This test simulates all nodes providing V_m for a short while and
      checks that V_m remains constant. This is a minimal test against
      missing variable initializations, cf ticket #421.

Remarks:

     	- Passing this test does not mean that all variables are properly initialized. It may just catch some cases bad cases.
     	- Simulator response to initialization errors is stochastic, so if variables are not initialized properly, this test may
      fail in some runs and not in others.
     	- Neuron models that do not initialize V_m to steady state, must be added to the exclude_models list below!
     	- If this test fails, please see installcheck.log for which model the test failed.
      The check if that model really initializes the membrane potential V_m to the steady-state value in absence of any input. If not, add the model to the exclude_models list below.

Author:

    Hans Ekkehard Plesser, 2010-05-05

Source:

    /opt/conda/conda-bld/nest_1510212701067/work/nest-2.14.0/testsuite/regressiontests/ticket-421.sli

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