Add unit tests for PotentialFileReader

unittest/formats/test_potential_file_reader.cpp

@@ -0,0 +1,57 @@
+#include "gmock/gmock.h"
+#include "gtest/gtest.h"
+#include "potential_file_reader.h"
+#include "lammps.h"
+#include "utils.h"
+#include "MANYBODY/pair_sw.h"
+#include "MANYBODY/pair_comb.h"
+#include "MANYBODY/pair_comb3.h"
+
+#include <mpi.h>
+
+using namespace LAMMPS_NS;
+
+const int LAMMPS_NS::PairSW::Param::NPARAMS_PER_LINE;
+const int LAMMPS_NS::PairComb::Param::NPARAMS_PER_LINE;
+const int LAMMPS_NS::PairComb3::Param::NPARAMS_PER_LINE;
+
+class PotenialFileReaderTest : public ::testing::Test {
+protected:
+    LAMMPS * lmp;
+
+    void SetUp() override {
+        const char *args[] = {"PotentialFileReaderTest", "-log", "none", "-echo", "screen", "-nocite" };
+        char **argv = (char **)args;
+        int argc = sizeof(args)/sizeof(char *);
+        lmp = new LAMMPS(argc, argv, MPI_COMM_WORLD);
+    }
+
+    void TearDown() override {
+        delete lmp;
+    }
+};
+
+TEST_F(PotenialFileReaderTest, Si) {
+    PotentialFileReader reader(lmp, "Si.sw", "Stillinger-Weber");
+    auto line = reader.next_line(PairSW::Param::NPARAMS_PER_LINE);
+    ASSERT_EQ(utils::count_words(line), PairSW::Param::NPARAMS_PER_LINE);
+}
+
+TEST_F(PotenialFileReaderTest, Comb) {
+    PotentialFileReader reader(lmp, "ffield.comb", "COMB");
+    auto line = reader.next_line(PairComb::Param::NPARAMS_PER_LINE);
+    ASSERT_EQ(utils::count_words(line), PairComb::Param::NPARAMS_PER_LINE);
+}
+
+TEST_F(PotenialFileReaderTest, Comb3) {
+    PotentialFileReader reader(lmp, "ffield.comb3", "COMB3");
+    auto line = reader.next_line(PairComb3::Param::NPARAMS_PER_LINE);
+    ASSERT_EQ(utils::count_words(line), PairComb3::Param::NPARAMS_PER_LINE);
+}
+
+int main(int argc, char **argv)
+{
+    MPI_Init(&argc, &argv);
+    ::testing::InitGoogleMock(&argc, argv);
+    return RUN_ALL_TESTS();
+}