Adding a surfing test with a restart capability

ProcessLib/PhaseField/Tests.cmake

@@ -97,6 +97,21 @@ AddTest(
         expected_surfing_ts_20_t_1_000000_0.vtu surfing_ts_20_t_1.000000.vtu phasefield phasefield 1e-6 0
 )
 
+AddTest(
+    NAME PhaseField_2D_surfing_AT1_vd_restart
+    PATH PhaseField/surfing
+    EXECUTABLE ogs
+    EXECUTABLE_ARGS surfing_restart.xml
+    WRAPPER mpirun
+    WRAPPER_ARGS -np 1
+    TESTER vtkdiff
+    REQUIREMENTS OGS_USE_MPI
+    RUNTIME 18
+    DIFF_DATA
+        expected_surfing_ts_20_t_1_000000_0.vtu surfing_restart_ts_10_t_1.000000.vtu displacement displacement 1e-10 0
+        expected_surfing_ts_20_t_1_000000_0.vtu surfing_restart_ts_10_t_1.000000.vtu phasefield phasefield 1e-10 0
+)
+
 AddTest(
     NAME PhaseField_2D_K_regime_HF_2cores
     PATH PhaseField/k_regime_HF

Tests/Data/PhaseField/surfing/surfing.prj

@@ -108,10 +108,6 @@
         </processes>
         <output>
             <variables>
-                <variable>displacement</variable>
-                <variable>phasefield</variable>
-                <variable>sigma</variable>
-                <variable>epsilon</variable>
             </variables>
             <type>VTK</type>
             <prefix>surfing</prefix>

Tests/Data/PhaseField/surfing/surfing_restart.xml

+<?xml version="1.0" encoding="ISO-8859-1"?>
+<OpenGeoSysProjectDiff base_file="surfing.prj">
+    <!-- Replace the mesh file -->
+    <replace sel="/*/meshes/mesh[1]/text()">surfing_ts_10_t_0.500000.vtu</replace>
+    <!-- Modify the displacement0 parameter -->
+    <replace sel="/*/parameters/parameter[name='displacement0']/type/text()">MeshNode</replace>
+    <remove sel="/*/parameters/parameter[name='displacement0']/values"/>
+    <add sel="/*/parameters/parameter[name='displacement0']">
+        <field_name>displacement</field_name>
+    </add>
+    <!-- Modify the phasefield_ic parameter -->
+    <replace sel="/*/parameters/parameter[name='phasefield_ic']/field_name/text()">phasefield</replace>
+    <!-- Modify the t_initial times:0 to 0.5 -->
+    <replace sel="/*/time_loop/processes/process[1]/time_stepping/t_initial/text()">0.5</replace>
+    <replace sel="/*/time_loop/processes/process[2]/time_stepping/t_initial/text()">0.5</replace>
+    <!-- Modify the output prefix -->
+    <replace sel="/*/time_loop/output/prefix/text()">surfing_restart</replace>
+</OpenGeoSysProjectDiff>