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// unit tests for issuing command to a LAMMPS instance through the Fortran wrapper
#include "lammps.h"
#include <cstdio> // for stdin, stdout
#include <mpi.h>
#include <string>
#include "gtest/gtest.h"
// prototypes for fortran reverse wrapper functions
extern "C" {
void *f_lammps_with_args();
void f_lammps_close();
void f_lammps_file();
void f_lammps_command();
void f_lammps_commands_list();
void f_lammps_commands_string();
double f_lammps_get_natoms();
}
class LAMMPS_commands : public ::testing::Test {
protected:
LAMMPS_NS::LAMMPS *lmp;
LAMMPS_commands() = default;
~LAMMPS_commands() override = default;
void SetUp() override
{
::testing::internal::CaptureStdout();
lmp = (LAMMPS_NS::LAMMPS *)f_lammps_with_args();
std::string output = ::testing::internal::GetCapturedStdout();
EXPECT_STREQ(output.substr(0, 8).c_str(), "LAMMPS (");
}
void TearDown() override
{
::testing::internal::CaptureStdout();
f_lammps_close();
std::string output = ::testing::internal::GetCapturedStdout();
EXPECT_STREQ(output.substr(0, 16).c_str(), "Total wall time:");
lmp = nullptr;
}
};
TEST_F(LAMMPS_commands, from_file)
{
EXPECT_EQ(f_lammps_get_natoms(), 0);
f_lammps_file();
EXPECT_EQ(f_lammps_get_natoms(), 2);
};
TEST_F(LAMMPS_commands, from_line)
{
EXPECT_EQ(f_lammps_get_natoms(), 0);
f_lammps_command();
EXPECT_EQ(f_lammps_get_natoms(), 1);
};
TEST_F(LAMMPS_commands, from_list)
{
EXPECT_EQ(f_lammps_get_natoms(), 0);
f_lammps_commands_list();
EXPECT_EQ(f_lammps_get_natoms(), 2);
};
TEST_F(LAMMPS_commands, from_string)
{
EXPECT_EQ(f_lammps_get_natoms(), 0);
f_lammps_commands_string();
EXPECT_EQ(f_lammps_get_natoms(), 2);
};
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