test for Database read/write

tests/CMakeLists.txt

@@ -68,6 +68,7 @@ ADD_LBPM_TEST_PARALLEL( TestSegDist 8 )
 ADD_LBPM_TEST_PARALLEL( TestCommD3Q19 8 )
 ADD_LBPM_TEST_1_2_4( testCommunication )
 ADD_LBPM_TEST( TestWriter )
+ADD_LBPM_TEST( TestDatabase )
 IF ( USE_NETCDF )
     ADD_LBPM_TEST_PARALLEL( TestNetcdf 8 )
     ADD_LBPM_EXECUTABLE( lbpm_uCT_pp )

tests/TestDatabase.cpp

@@ -0,0 +1,67 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <iostream>
+#include <exception>
+#include <stdexcept>
+#include <fstream>
+#include <iostream>
+#include <memory>
+
+#include "common/UnitTest.h"
+#include "common/Utilities.h"
+#include "common/MPI_Helpers.h"
+#include "common/Database.h"
+#include "ProfilerApp.h"
+
+
+// Main
+int main(int argc, char **argv)
+{
+    int rank,nprocs;
+    MPI_Init(&argc,&argv);
+    MPI_Comm comm = MPI_COMM_WORLD;
+    MPI_Comm_rank(comm,&rank);
+    MPI_Comm_size(comm,&nprocs);
+    Utilities::setAbortBehavior(true,2);
+    Utilities::setErrorHandlers();
+    UnitTest ut;
+    int err=0;
+    
+    int BC=2;
+    int npx=1; int npy=2; int npz=4;
+    int nx=32; int ny=34; int nz=35;
+    
+    // write a simple database and test that it can be read by LBPM
+    auto db = std::make_shared<Database>( );
+    db->putScalar<int>( "BC", BC );
+    db->putVector<int>( "nproc", { npx, npy, npz } );
+    db->putVector<int>( "n", { nx, ny, nz } );
+
+    std::ofstream OutStream("test.db");
+//    db->putDatabase();
+    OutStream << "Domain { \n";
+    db->print(OutStream, "   ");
+    OutStream << "} \n";
+	printf("TestDatbase: writing test file\n");
+	OutStream.close();
+
+	auto new_db = std::make_shared<Database>( "test.db" );
+	auto domain_db = new_db->getDatabase( "Domain" );
+	if (domain_db->keyExists( "BC" )){
+		auto newBC = domain_db->getScalar<int>( "BC" );
+		if (newBC != BC){
+			err=1;
+			printf("TestDatbase: getScalar failed! \n");
+		}
+	}
+	if (err==0) printf("TestDatabase: succeeded!\n");
+	else 		printf("TestDatabase: errors encountered \n");
+
+    // Finished
+    PROFILE_SAVE("TestDatabase",true);
+    MPI_Barrier(comm);
+    MPI_Finalize();
+    return err;
+}
+
+