emp05.gms : Test handling of constant equations

Description

```Test for EMP's handling of constants

Contributor: Jan-H. Jagla, April 2009
```

Small Model of Type : GAMS

Category : GAMS Test library

Main file : emp05.gms

``````\$title "Test for handling of constant equations" (EMP05,SEQ=442)

\$ontext

Test for EMP's handling of constants

Contributor: Jan-H. Jagla, April 2009

\$offtext

Equation defobj,e1,e2,e3,e4,e5;
Variable z;
defobj.. z =e= 3;
e1.. 1 =l= 5;
e2.. 1 =n= 5;
e3.. 1 =e= 1;
e4.. 1 =g= -5;
e5.. 1 =n= -5;
Model constants /all/;

\$echo FileName test1.gms > jams.opt
constants.optfile=1;

Solve constants using emp minimizing z ;
abort\$execerror 'Solve ok using emp should not have given exec errors';
display constants.numvar, constants.numequ;
abort\$(constants.numvar <> 1 or constants.numequ <> 6) 'Model ok should have one variable and six equations';
execute 'sed "2d" test1.gms > test1_mod.gms';
execute 'diff -I reslim -bw test1_mod.gms test_ref.gms'
abort\$errorlevel 'test1_mod.gms and test_ref.gms differ';

Equation e6;
e6.. 1 =e= 2;
Model infeas_equE /constants, e6/;

Solve infeas_equE using emp minimizing z ;
abort\$execerror 'Solve ok using emp should not have given exec errors';
abort\$(infeas_equE.solvestat <> 1 or infeas_equE.modelstat <> 4) 'Model infeas_equE should terminate with (1,4)';
display infeas_equE.numvar, infeas_equE.numequ;
abort\$(infeas_equE.numvar <> 1 or infeas_equE.numequ <> 7) 'Model infeas_equE should have one variable and seven equations';
execute 'grep "JAMS Equation 7 infeasible due to rhs value" "%gams.scrdir%gamsstat.%gams.scrext%" > test.txt'
abort\$errorlevel 'EMP did not declare e6 infeasible';

Equation e7;
e7.. 1 =l= -1;
Model infeas_equL /constants, e7/;

Solve infeas_equL using emp minimizing z ;
abort\$execerror 'Solve ok using emp should not have given exec errors';
abort\$(infeas_equL.solvestat <> 1 or infeas_equL.modelstat <> 4) 'Model infeas_equL should terminate with (1,4)';
display infeas_equL.numvar, infeas_equL.numequ;
abort\$(infeas_equL.numvar <> 1 or infeas_equL.numequ <> 7) 'Model infeas_equL should have one variable and seven equations';
execute 'grep "JAMS Equation 7 infeasible due to rhs value" "%gams.scrdir%gamsstat.%gams.scrext%" > test.txt'
abort\$errorlevel 'EMP did not declare e7 infeasible';

Equation e8;
e8.. 1 =g= 2;
Model infeas_equG /constants, e8/;

Solve infeas_equG using emp minimizing z ;
abort\$execerror 'Solve ok using emp should not have given exec errors';
abort\$(infeas_equG.solvestat <> 1 or infeas_equG.modelstat <> 4) 'Model infeas_equG should terminate with (1,4)';
display infeas_equG.numvar, infeas_equG.numequ;
abort\$(infeas_equG.numvar <> 1 or infeas_equG.numequ <> 7) 'Model infeas_equG should have one variable and seven equations';
execute 'grep "JAMS Equation 7 infeasible due to rhs value" "%gams.scrdir%gamsstat.%gams.scrext%" > test.txt'
abort\$errorlevel 'EMP did not declare e8 infeasible';

\$onecho > test_ref.gms
***********************************************
***********************************************

Variables  objvar;

Equations  e1;

e1..    objvar =E= 3;

Model m / all /;

m.limrow=0; m.limcol=0;

Solve m using LP minimizing objvar;
\$offecho
``````
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