Add regression test

(cherry picked from commit a60d52c2)

solvers/IncNavierStokesSolver/CMakeLists.txt

@@ -119,6 +119,7 @@ IF( NEKTAR_SOLVER_INCNAVIERSTOKES )
         ADD_NEKTAR_TEST_LENGTHY(Hex_channel_m8_par)
         ADD_NEKTAR_TEST_LENGTHY(Pyr_channel_m6_par)
         ADD_NEKTAR_TEST_LENGTHY(Hex_channel_m8_srhs_par)
+        ADD_NEKTAR_TEST(Tet_channel_m4_per_xxt_ml_par)
         ADD_NEKTAR_TEST(Tet_channel_m8_par)
         ADD_NEKTAR_TEST_LENGTHY(Tet_channel_m8_iter_ml_par)
         ADD_NEKTAR_TEST_LENGTHY(bfs_tg_par)

solvers/IncNavierStokesSolver/Tests/Tet_channel_m4_per.tst

@@ -2,7 +2,7 @@
 <test>
     <description>3D channel flow, Tetrahedral elements, P=4, periodic BCs</description>
     <executable>IncNavierStokesSolver</executable>
-    <parameters>Tet_channel_m4_per.xml</parameters>
+    <parameters>-I GlobalSysSoln=DirectStaticCond Tet_channel_m4_per.xml</parameters>
     <files>
         <file description="Session File">Tet_channel_m4_per.xml</file>
     </files>

solvers/IncNavierStokesSolver/Tests/Tet_channel_m4_per.xml

@@ -84,7 +84,6 @@
         <I PROPERTY="AdvectionForm" VALUE="Convective" />
         <I PROPERTY="Projection" VALUE="Galerkin" />
         <I PROPERTY="TimeIntegrationMethod" VALUE="IMEXOrder1" />
-        <I PROPERTY="GlobalSysSoln" VALUE="DirectStaticCond" />
       </SOLVERINFO>
       
       <PARAMETERS>

solvers/IncNavierStokesSolver/Tests/Tet_channel_m4_per_xxt_ml_par.tst

+<?xml version="1.0" encoding="utf-8" ?>
+<test>
+    <description>3D channel flow, Tetrahedral elements, P=4, periodic BCs, XxtMultiLevelStaticCond, par(2)</description>
+    <executable>IncNavierStokesSolver</executable>
+    <parameters>--use-metis -I GlobalSysSoln=XxtMultiLevelStaticCond Tet_channel_m4_per.xml</parameters>
+    <processes>2</processes>
+    <files>
+        <file description="Session File">Tet_channel_m4_per.xml</file>
+    </files>
+    <metrics>
+        <metric type="L2" id="1">
+            <value variable="u" tolerance="1e-12">0</value>
+            <value variable="v" tolerance="1e-12">0</value>
+            <value variable="w" tolerance="1e-12">0</value>
+            <value variable="p" tolerance="1e-12">0</value>
+        </metric>
+        <metric type="Linf" id="2">
+            <value variable="u" tolerance="1e-12">0</value>
+            <value variable="v" tolerance="1e-12">0</value>
+            <value variable="w" tolerance="1e-12">0</value>
+            <value variable="p" tolerance="1e-12">0</value>
+        </metric>
+    </metrics>
+</test>