Added a test program for SegmentedWellModel.

The only currently tested case is a simple water injector.

CMakeLists_files.cmake

@@ -46,6 +46,7 @@ list (APPEND TEST_SOURCE_FILES
 	tests/test_span.cpp
 	tests/test_syntax.cpp
 	tests/test_scalar_mult.cpp
+	tests/test_segmentedwellmodel.cpp
 	)
 
 list (APPEND TEST_DATA_FILES

tests/test_segmentedwellmodel.cpp

@@ -0,0 +1,84 @@
+/*
+  Copyright 2014 SINTEF ICT, Applied Mathematics.
+
+  This file is part of the Open Porous Media project (OPM).
+
+  OPM is free software: you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as published by
+  the Free Software Foundation, either version 3 of the License, or
+  (at your option) any later version.
+
+  OPM is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  GNU General Public License for more details.
+
+  You should have received a copy of the GNU General Public License
+  along with OPM.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+
+#include <config.h>
+
+#if HAVE_DYNAMIC_BOOST_TEST
+#define BOOST_TEST_DYN_LINK
+#endif
+
+#define BOOST_TEST_MODULE SegmentedWellModelTest
+
+#include <opm/autodiff/SegmentedWellModel.hpp>
+#include <opm/core/wells.h>
+#include <opm/core/simulator/WellState.hpp>
+#include <opm/core/props/BlackoilPhases.hpp>
+#include <opm/core/utility/Units.hpp>
+
+#include <boost/test/unit_test.hpp>
+
+#include <iostream>
+
+using namespace Opm;
+
+BOOST_AUTO_TEST_CASE(TestPressureDeltas)
+{
+    // Simple water injector.
+    const int np = 3;
+    const int nperf = 4;
+    const double ref_depth = 1000.0;
+    const double comp_frac[np] = { 1.0, 0.0, 0.0 };
+    const int cells[nperf] = { 0, 1, 2, 3 };
+    const double WI[nperf] = { 1.0, 1.0, 1.0, 1.0 };
+    const char *name = "INJECTOR";
+    Wells* wells = create_wells(np, 1, nperf);
+    BOOST_REQUIRE(wells != NULL);
+    const int ok = add_well(INJECTOR, ref_depth, nperf, comp_frac, cells, WI, name, wells);
+    BOOST_REQUIRE(ok);
+    std::vector<double> rates = { 1.0, 0.0, 0.0,
+                                  1.0, 0.0, 0.0,
+                                  1.5, 0.0, 0.0,
+                                  1.5, 0.0, 0.0 };
+    WellState wellstate;
+    wellstate.perfRates() = rates;
+    PhaseUsage pu;
+    pu.num_phases = 3;
+    pu.phase_used[0] = true;
+    pu.phase_used[1] = true;
+    pu.phase_used[2] = true;
+    pu.phase_pos[0] = 0;
+    pu.phase_pos[1] = 1;
+    pu.phase_pos[2] = 2;
+    const std::vector<double> b_perf = { 2.0, 3.0, 100.0,
+                                         2.0, 3.5, 110.0,
+                                         2.0, 4.0, 120.0,
+                                         2.0, 4.5, 130.0 };
+    const std::vector<double> rsmax_perf;
+    const std::vector<double> rvmax_perf;
+    const std::vector<double> z_perf = { 1100.0, 1200.0, 1300.0, 1400.0 };
+    const std::vector<double> surf_dens = { 1000.0, 800.0, 10.0 };
+    const double gravity = Opm::unit::gravity;
+    const std::vector<double> dp = SegmentedWellModel::computeConnectionPressureDelta(*wells, wellstate, pu, b_perf, rsmax_perf, rvmax_perf, z_perf, surf_dens, gravity);
+    const std::vector<double> answer = { 2e5*gravity, 4e5*gravity, 6e5*gravity, 8e5*gravity };
+    BOOST_REQUIRE_EQUAL(dp.size(), answer.size());
+    for (size_t i = 0; i < dp.size(); ++i) {
+        BOOST_CHECK_CLOSE(dp[i], answer[i], 1e-8);
+    }
+}