766 lines
26 KiB
C++
766 lines
26 KiB
C++
/* ----------------------------------------------------------------------
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LAMMPS - Large-scale Atomic/Molecular Massively Parallel Simulator
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https://www.lammps.org/, Sandia National Laboratories
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LAMMPS Development team: developers@lammps.org
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Copyright (2003) Sandia Corporation. Under the terms of Contract
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DE-AC04-94AL85000 with Sandia Corporation, the U.S. Government retains
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certain rights in this software. This software is distributed under
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the GNU General Public License.
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See the README file in the top-level LAMMPS directory.
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------------------------------------------------------------------------- */
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// unit tests for angle styles intended for molecular systems
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#include "error_stats.h"
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#include "test_config.h"
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#include "test_config_reader.h"
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#include "test_main.h"
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#include "yaml_reader.h"
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#include "yaml_writer.h"
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#include "gmock/gmock.h"
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#include "gtest/gtest.h"
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#include "angle.h"
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#include "atom.h"
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#include "compute.h"
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#include "exceptions.h"
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#include "fix.h"
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#include "fmt/format.h"
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#include "force.h"
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#include "info.h"
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#include "input.h"
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#include "lammps.h"
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#include "modify.h"
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#include "platform.h"
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#include "universe.h"
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#include <cctype>
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#include <cstdio>
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#include <cstdlib>
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#include <cstring>
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#include <mpi.h>
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#include <map>
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#include <string>
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#include <utility>
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#include <vector>
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using ::testing::HasSubstr;
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using ::testing::StartsWith;
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using namespace LAMMPS_NS;
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void cleanup_lammps(LAMMPS *lmp, const TestConfig &cfg)
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{
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platform::unlink(cfg.basename + ".restart");
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platform::unlink(cfg.basename + ".data");
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platform::unlink(cfg.basename + "-coeffs.in");
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delete lmp;
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}
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LAMMPS *init_lammps(LAMMPS::argv &args, const TestConfig &cfg, const bool newton = true)
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{
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LAMMPS *lmp;
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lmp = new LAMMPS(args, MPI_COMM_WORLD);
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// check if prerequisite styles are available
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Info *info = new Info(lmp);
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int nfail = 0;
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for (auto &prerequisite : cfg.prerequisites) {
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std::string style = prerequisite.second;
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// this is a test for angle styles, so if the suffixed
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// version is not available, there is no reason to test.
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if (prerequisite.first == "angle") {
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if (lmp->suffix_enable) {
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style += "/";
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style += lmp->suffix;
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}
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}
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if (!info->has_style(prerequisite.first, style)) ++nfail;
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}
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delete info;
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if (nfail > 0) {
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cleanup_lammps(lmp, cfg);
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return nullptr;
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}
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// utility lambdas to improve readability
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auto command = [&](const std::string &line) {
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try {
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lmp->input->one(line);
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} catch (LAMMPSAbortException &ae) {
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fprintf(stderr, "LAMMPS Error: %s\n", ae.what());
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exit(2);
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} catch (LAMMPSException &e) {
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fprintf(stderr, "LAMMPS Error: %s\n", e.what());
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exit(3);
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} catch (fmt::format_error &fe) {
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fprintf(stderr, "fmt::format_error: %s\n", fe.what());
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exit(4);
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} catch (std::exception &e) {
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fprintf(stderr, "General exception: %s\n", e.what());
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exit(5);
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}
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};
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auto parse_input_script = [&](const std::string &filename) {
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lmp->input->file(filename.c_str());
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};
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if (newton) {
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command("variable newton_bond index on");
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} else {
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command("variable newton_bond index off");
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}
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command("variable input_dir index " + INPUT_FOLDER);
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for (auto &pre_command : cfg.pre_commands) {
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command(pre_command);
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}
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std::string input_file = platform::path_join(INPUT_FOLDER, cfg.input_file);
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parse_input_script(input_file);
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command("angle_style " + cfg.angle_style);
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for (auto &angle_coeff : cfg.angle_coeff) {
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command("angle_coeff " + angle_coeff);
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}
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for (auto &post_command : cfg.post_commands) {
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command(post_command);
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}
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command("run 0 post no");
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command("write_restart " + cfg.basename + ".restart");
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command("write_data " + cfg.basename + ".data");
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command("write_coeff " + cfg.basename + "-coeffs.in");
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return lmp;
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}
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void run_lammps(LAMMPS *lmp)
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{
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// utility lambda to improve readability
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auto command = [&](const std::string &line) {
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lmp->input->one(line);
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};
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command("fix 1 all nve");
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command("compute pe all pe/atom angle");
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command("compute sum all reduce sum c_pe");
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command("thermo_style custom step temp pe press c_sum");
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command("thermo 2");
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command("run 4 post no");
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}
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void restart_lammps(LAMMPS *lmp, const TestConfig &cfg)
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{
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// utility lambda to improve readability
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auto command = [&](const std::string &line) {
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lmp->input->one(line);
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};
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command("clear");
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command("read_restart " + cfg.basename + ".restart");
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if (!lmp->force->angle) {
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command("angle_style " + cfg.angle_style);
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}
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if ((cfg.angle_style.substr(0, 6) == "hybrid") || !lmp->force->angle->writedata) {
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for (auto &angle_coeff : cfg.angle_coeff) {
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command("angle_coeff " + angle_coeff);
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}
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}
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for (auto &post_command : cfg.post_commands) {
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command(post_command);
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}
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command("run 0 post no");
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}
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void data_lammps(LAMMPS *lmp, const TestConfig &cfg)
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{
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// utility lambdas to improve readability
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auto command = [&](const std::string &line) {
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lmp->input->one(line);
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};
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auto parse_input_script = [&](const std::string &filename) {
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lmp->input->file(filename.c_str());
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};
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command("clear");
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command("variable angle_style delete");
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command("variable data_file delete");
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command("variable newton_bond delete");
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command("variable newton_bond index on");
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for (auto &pre_command : cfg.pre_commands) {
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command(pre_command);
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}
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command("variable angle_style index '" + cfg.angle_style + "'");
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command("variable data_file index " + cfg.basename + ".data");
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std::string input_file = platform::path_join(INPUT_FOLDER, cfg.input_file);
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parse_input_script(input_file);
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for (auto &angle_coeff : cfg.angle_coeff) {
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command("angle_coeff " + angle_coeff);
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}
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for (auto &post_command : cfg.post_commands) {
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command(post_command);
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}
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command("run 0 post no");
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}
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// re-generate yaml file with current settings.
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void generate_yaml_file(const char *outfile, const TestConfig &config)
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{
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// initialize system geometry
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LAMMPS::argv args = {"AngleStyle", "-log", "none", "-echo", "screen", "-nocite"};
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LAMMPS *lmp = init_lammps(args, config);
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if (!lmp) {
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std::cerr << "One or more prerequisite styles are not available "
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"in this LAMMPS configuration:\n";
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for (auto &prerequisite : config.prerequisites) {
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std::cerr << prerequisite.first << "_style " << prerequisite.second << "\n";
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}
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return;
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}
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const int natoms = lmp->atom->natoms;
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std::string block;
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YamlWriter writer(outfile);
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// write yaml header
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write_yaml_header(&writer, &test_config, lmp->version);
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// angle_style
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writer.emit("angle_style", config.angle_style);
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// angle_coeff
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block.clear();
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for (auto &angle_coeff : config.angle_coeff) {
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block += angle_coeff + "\n";
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}
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writer.emit_block("angle_coeff", block);
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// equilibrium angle
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block = fmt::format("{}", lmp->atom->nangletypes);
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for (int i = 0; i < lmp->atom->nangletypes; ++i)
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block += fmt::format(" {}", lmp->force->angle->equilibrium_angle(i + 1));
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writer.emit("equilibrium", block);
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// extract
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block.clear();
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for (auto data : config.extract)
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block += fmt::format("{} {}\n", data.first, data.second);
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writer.emit_block("extract", block);
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// natoms
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writer.emit("natoms", natoms);
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// init_energy
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writer.emit("init_energy", lmp->force->angle->energy);
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// init_stress
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auto stress = lmp->force->angle->virial;
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block = fmt::format("{:23.16e} {:23.16e} {:23.16e} {:23.16e} {:23.16e} {:23.16e}", stress[0],
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stress[1], stress[2], stress[3], stress[4], stress[5]);
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writer.emit_block("init_stress", block);
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// init_forces
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block.clear();
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auto f = lmp->atom->f;
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for (int i = 1; i <= natoms; ++i) {
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const int j = lmp->atom->map(i);
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block += fmt::format("{:3} {:23.16e} {:23.16e} {:23.16e}\n", i, f[j][0], f[j][1], f[j][2]);
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}
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writer.emit_block("init_forces", block);
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// do a few steps of MD
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run_lammps(lmp);
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// run_energy
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writer.emit("run_energy", lmp->force->angle->energy);
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// run_stress
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stress = lmp->force->angle->virial;
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block = fmt::format("{:23.16e} {:23.16e} {:23.16e} {:23.16e} {:23.16e} {:23.16e}", stress[0],
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stress[1], stress[2], stress[3], stress[4], stress[5]);
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writer.emit_block("run_stress", block);
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block.clear();
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f = lmp->atom->f;
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for (int i = 1; i <= natoms; ++i) {
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const int j = lmp->atom->map(i);
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block += fmt::format("{:3} {:23.16e} {:23.16e} {:23.16e}\n", i, f[j][0], f[j][1], f[j][2]);
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}
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writer.emit_block("run_forces", block);
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cleanup_lammps(lmp, config);
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}
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TEST(AngleStyle, plain)
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{
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if (test_config.skip_tests.count(test_info_->name())) GTEST_SKIP();
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LAMMPS::argv args = {"AngleStyle", "-log", "none", "-echo", "screen", "-nocite"};
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::testing::internal::CaptureStdout();
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LAMMPS *lmp = init_lammps(args, test_config, true);
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std::string output = ::testing::internal::GetCapturedStdout();
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if (verbose) std::cout << output;
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if (!lmp) {
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std::cerr << "One or more prerequisite styles are not available "
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"in this LAMMPS configuration:\n";
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for (auto &prerequisite : test_config.prerequisites) {
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std::cerr << prerequisite.first << "_style " << prerequisite.second << "\n";
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}
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GTEST_SKIP();
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}
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EXPECT_THAT(output, StartsWith("LAMMPS ("));
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EXPECT_THAT(output, HasSubstr("Loop time"));
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// abort if running in parallel and not all atoms are local
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const int nlocal = lmp->atom->nlocal;
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ASSERT_EQ(lmp->atom->natoms, nlocal);
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double epsilon = test_config.epsilon;
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ErrorStats stats;
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auto angle = lmp->force->angle;
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EXPECT_FORCES("init_forces (newton on)", lmp->atom, test_config.init_forces, epsilon);
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EXPECT_STRESS("init_stress (newton on)", angle->virial, test_config.init_stress, epsilon);
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stats.reset();
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EXPECT_FP_LE_WITH_EPS(angle->energy, test_config.init_energy, epsilon);
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if (print_stats) std::cerr << "init_energy stats, newton on: " << stats << std::endl;
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if (!verbose) ::testing::internal::CaptureStdout();
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run_lammps(lmp);
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if (!verbose) ::testing::internal::GetCapturedStdout();
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EXPECT_FORCES("run_forces (newton on)", lmp->atom, test_config.run_forces, 10 * epsilon);
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EXPECT_STRESS("run_stress (newton on)", angle->virial, test_config.run_stress, epsilon);
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stats.reset();
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int id = lmp->modify->find_compute("sum");
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double energy = lmp->modify->compute[id]->compute_scalar();
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EXPECT_FP_LE_WITH_EPS(angle->energy, test_config.run_energy, epsilon);
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EXPECT_FP_LE_WITH_EPS(angle->energy, energy, epsilon);
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if (print_stats) std::cerr << "run_energy stats, newton on: " << stats << std::endl;
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if (!verbose) ::testing::internal::CaptureStdout();
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cleanup_lammps(lmp, test_config);
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lmp = init_lammps(args, test_config, false);
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if (!verbose) ::testing::internal::GetCapturedStdout();
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// skip over these tests if newton bond is forced to be on
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if (lmp->force->newton_bond == 0) {
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angle = lmp->force->angle;
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EXPECT_FORCES("init_forces (newton off)", lmp->atom, test_config.init_forces, epsilon);
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EXPECT_STRESS("init_stress (newton off)", angle->virial, test_config.init_stress,
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2 * epsilon);
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stats.reset();
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EXPECT_FP_LE_WITH_EPS(angle->energy, test_config.init_energy, epsilon);
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if (print_stats) std::cerr << "init_energy stats, newton off:" << stats << std::endl;
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if (!verbose) ::testing::internal::CaptureStdout();
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run_lammps(lmp);
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if (!verbose) ::testing::internal::GetCapturedStdout();
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EXPECT_FORCES("run_forces (newton off)", lmp->atom, test_config.run_forces, 10 * epsilon);
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EXPECT_STRESS("run_stress (newton off)", angle->virial, test_config.run_stress, epsilon);
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stats.reset();
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id = lmp->modify->find_compute("sum");
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energy = lmp->modify->compute[id]->compute_scalar();
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EXPECT_FP_LE_WITH_EPS(angle->energy, test_config.run_energy, epsilon);
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EXPECT_FP_LE_WITH_EPS(angle->energy, energy, epsilon);
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if (print_stats) std::cerr << "run_energy stats, newton off:" << stats << std::endl;
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}
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if (!verbose) ::testing::internal::CaptureStdout();
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restart_lammps(lmp, test_config);
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if (!verbose) ::testing::internal::GetCapturedStdout();
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angle = lmp->force->angle;
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EXPECT_FORCES("restart_forces", lmp->atom, test_config.init_forces, epsilon);
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EXPECT_STRESS("restart_stress", angle->virial, test_config.init_stress, epsilon);
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stats.reset();
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EXPECT_FP_LE_WITH_EPS(angle->energy, test_config.init_energy, epsilon);
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if (print_stats) std::cerr << "restart_energy stats:" << stats << std::endl;
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if (!verbose) ::testing::internal::CaptureStdout();
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data_lammps(lmp, test_config);
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if (!verbose) ::testing::internal::GetCapturedStdout();
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angle = lmp->force->angle;
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EXPECT_FORCES("data_forces", lmp->atom, test_config.init_forces, epsilon);
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EXPECT_STRESS("data_stress", angle->virial, test_config.init_stress, epsilon);
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stats.reset();
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EXPECT_FP_LE_WITH_EPS(angle->energy, test_config.init_energy, epsilon);
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if (print_stats) std::cerr << "data_energy stats:" << stats << std::endl;
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if (!verbose) ::testing::internal::CaptureStdout();
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cleanup_lammps(lmp, test_config);
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if (!verbose) ::testing::internal::GetCapturedStdout();
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};
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TEST(AngleStyle, omp)
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{
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if (!LAMMPS::is_installed_pkg("OPENMP")) GTEST_SKIP();
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if (test_config.skip_tests.count(test_info_->name())) GTEST_SKIP();
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LAMMPS::argv args = {"AngleStyle", "-log", "none", "-echo", "screen", "-nocite",
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"-pk", "omp", "4", "-sf", "omp"};
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::testing::internal::CaptureStdout();
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LAMMPS *lmp = init_lammps(args, test_config, true);
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std::string output = ::testing::internal::GetCapturedStdout();
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if (verbose) std::cout << output;
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if (!lmp) {
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std::cerr << "One or more prerequisite styles with /omp suffix\n"
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"are not available in this LAMMPS configuration:\n";
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for (auto &prerequisite : test_config.prerequisites) {
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std::cerr << prerequisite.first << "_style " << prerequisite.second << "\n";
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}
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GTEST_SKIP();
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}
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EXPECT_THAT(output, StartsWith("LAMMPS ("));
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EXPECT_THAT(output, HasSubstr("Loop time"));
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// abort if running in parallel and not all atoms are local
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const int nlocal = lmp->atom->nlocal;
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ASSERT_EQ(lmp->atom->natoms, nlocal);
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// relax error a bit for OPENMP package
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double epsilon = 5.0 * test_config.epsilon;
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ErrorStats stats;
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auto angle = lmp->force->angle;
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EXPECT_FORCES("init_forces (newton on)", lmp->atom, test_config.init_forces, epsilon);
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EXPECT_STRESS("init_stress (newton on)", angle->virial, test_config.init_stress, 10 * epsilon);
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stats.reset();
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EXPECT_FP_LE_WITH_EPS(angle->energy, test_config.init_energy, epsilon);
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if (print_stats) std::cerr << "init_energy stats, newton on: " << stats << std::endl;
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if (!verbose) ::testing::internal::CaptureStdout();
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run_lammps(lmp);
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if (!verbose) ::testing::internal::GetCapturedStdout();
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EXPECT_FORCES("run_forces (newton on)", lmp->atom, test_config.run_forces, 10 * epsilon);
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EXPECT_STRESS("run_stress (newton on)", angle->virial, test_config.run_stress, 10 * epsilon);
|
|
|
|
stats.reset();
|
|
int id = lmp->modify->find_compute("sum");
|
|
double energy = lmp->modify->compute[id]->compute_scalar();
|
|
EXPECT_FP_LE_WITH_EPS(angle->energy, test_config.run_energy, epsilon);
|
|
// TODO: this is currently broken for OPENMP with angle style hybrid
|
|
// needs to be fixed in the main code somewhere. Not sure where, though.
|
|
if (test_config.angle_style.substr(0, 6) != "hybrid")
|
|
EXPECT_FP_LE_WITH_EPS(angle->energy, energy, epsilon);
|
|
if (print_stats) std::cerr << "run_energy stats, newton on: " << stats << std::endl;
|
|
|
|
if (!verbose) ::testing::internal::CaptureStdout();
|
|
cleanup_lammps(lmp, test_config);
|
|
lmp = init_lammps(args, test_config, false);
|
|
if (!verbose) ::testing::internal::GetCapturedStdout();
|
|
|
|
// skip over these tests if newton bond is forced to be on
|
|
if (lmp->force->newton_bond == 0) {
|
|
angle = lmp->force->angle;
|
|
|
|
EXPECT_FORCES("init_forces (newton off)", lmp->atom, test_config.init_forces, epsilon);
|
|
EXPECT_STRESS("init_stress (newton off)", angle->virial, test_config.init_stress,
|
|
10 * epsilon);
|
|
|
|
stats.reset();
|
|
EXPECT_FP_LE_WITH_EPS(angle->energy, test_config.init_energy, epsilon);
|
|
if (print_stats) std::cerr << "init_energy stats, newton off:" << stats << std::endl;
|
|
|
|
if (!verbose) ::testing::internal::CaptureStdout();
|
|
run_lammps(lmp);
|
|
if (!verbose) ::testing::internal::GetCapturedStdout();
|
|
|
|
EXPECT_FORCES("run_forces (newton off)", lmp->atom, test_config.run_forces, 10 * epsilon);
|
|
EXPECT_STRESS("run_stress (newton off)", angle->virial, test_config.run_stress,
|
|
10 * epsilon);
|
|
|
|
stats.reset();
|
|
id = lmp->modify->find_compute("sum");
|
|
energy = lmp->modify->compute[id]->compute_scalar();
|
|
EXPECT_FP_LE_WITH_EPS(angle->energy, test_config.run_energy, epsilon);
|
|
// TODO: this is currently broken for OPENMP with angle style hybrid
|
|
// needs to be fixed in the main code somewhere. Not sure where, though.
|
|
if (test_config.angle_style.substr(0, 6) != "hybrid")
|
|
EXPECT_FP_LE_WITH_EPS(angle->energy, energy, epsilon);
|
|
if (print_stats) std::cerr << "run_energy stats, newton off:" << stats << std::endl;
|
|
}
|
|
|
|
if (!verbose) ::testing::internal::CaptureStdout();
|
|
cleanup_lammps(lmp, test_config);
|
|
if (!verbose) ::testing::internal::GetCapturedStdout();
|
|
};
|
|
|
|
TEST(AngleStyle, numdiff)
|
|
{
|
|
if (!LAMMPS::is_installed_pkg("EXTRA-FIX")) GTEST_SKIP();
|
|
if (test_config.skip_tests.count(test_info_->name())) GTEST_SKIP();
|
|
|
|
LAMMPS::argv args = {"AngleStyle", "-log", "none", "-echo", "screen", "-nocite"};
|
|
|
|
::testing::internal::CaptureStdout();
|
|
LAMMPS *lmp = init_lammps(args, test_config, true);
|
|
|
|
std::string output = ::testing::internal::GetCapturedStdout();
|
|
if (verbose) std::cout << output;
|
|
|
|
if (!lmp) {
|
|
std::cerr << "One or more prerequisite styles are not available "
|
|
"in this LAMMPS configuration:\n";
|
|
for (auto &prerequisite : test_config.prerequisites) {
|
|
std::cerr << prerequisite.first << "_style " << prerequisite.second << "\n";
|
|
}
|
|
GTEST_SKIP();
|
|
}
|
|
|
|
EXPECT_THAT(output, StartsWith("LAMMPS ("));
|
|
EXPECT_THAT(output, HasSubstr("Loop time"));
|
|
|
|
// abort if running in parallel and not all atoms are local
|
|
const int nlocal = lmp->atom->nlocal;
|
|
ASSERT_EQ(lmp->atom->natoms, nlocal);
|
|
|
|
if (!verbose) ::testing::internal::CaptureStdout();
|
|
lmp->input->one("fix diff all numdiff 2 6.05504e-6");
|
|
lmp->input->one("run 2 post no");
|
|
if (!verbose) ::testing::internal::GetCapturedStdout();
|
|
Fix *ifix = lmp->modify->get_fix_by_id("diff");
|
|
if (ifix) {
|
|
double epsilon = test_config.epsilon * 5.0e8;
|
|
ErrorStats stats;
|
|
double **f1 = lmp->atom->f;
|
|
double **f2 = ifix->array_atom;
|
|
SCOPED_TRACE("EXPECT FORCES: numdiff");
|
|
for (int i = 0; i < nlocal; ++i) {
|
|
EXPECT_FP_LE_WITH_EPS(f1[i][0], f2[i][0], epsilon);
|
|
EXPECT_FP_LE_WITH_EPS(f1[i][1], f2[i][1], epsilon);
|
|
EXPECT_FP_LE_WITH_EPS(f1[i][2], f2[i][2], epsilon);
|
|
}
|
|
if (print_stats)
|
|
std::cerr << "numdiff stats: " << stats << " epsilon: " << epsilon << std::endl;
|
|
}
|
|
if (!verbose) ::testing::internal::CaptureStdout();
|
|
cleanup_lammps(lmp, test_config);
|
|
if (!verbose) ::testing::internal::GetCapturedStdout();
|
|
}
|
|
|
|
TEST(AngleStyle, single)
|
|
{
|
|
if (test_config.skip_tests.count(test_info_->name())) GTEST_SKIP();
|
|
|
|
LAMMPS::argv args = {"AngleStyle", "-log", "none", "-echo", "screen", "-nocite"};
|
|
|
|
// create a LAMMPS instance with standard settings to detect the number of atom types
|
|
if (!verbose) ::testing::internal::CaptureStdout();
|
|
LAMMPS *lmp = init_lammps(args, test_config);
|
|
if (!verbose) ::testing::internal::GetCapturedStdout();
|
|
|
|
if (!lmp) {
|
|
std::cerr << "One or more prerequisite styles are not available "
|
|
"in this LAMMPS configuration:\n";
|
|
for (auto &prerequisite : test_config.prerequisites) {
|
|
std::cerr << prerequisite.first << "_style " << prerequisite.second << "\n";
|
|
}
|
|
GTEST_SKIP();
|
|
}
|
|
|
|
// gather some information and skip if unsupported
|
|
int nangletypes = lmp->atom->nangletypes;
|
|
int molecular = lmp->atom->molecular;
|
|
if (molecular != Atom::MOLECULAR) {
|
|
std::cerr << "Only simple molecular atom styles are supported\n";
|
|
if (!verbose) ::testing::internal::CaptureStdout();
|
|
cleanup_lammps(lmp, test_config);
|
|
if (!verbose) ::testing::internal::GetCapturedStdout();
|
|
GTEST_SKIP();
|
|
}
|
|
|
|
// utility lambda to improve readability
|
|
auto command = [&](const std::string &line) {
|
|
lmp->input->one(line);
|
|
};
|
|
|
|
// now start over
|
|
if (!verbose) ::testing::internal::CaptureStdout();
|
|
command("clear");
|
|
command("variable newton_bond delete");
|
|
command("variable newton_bond index on");
|
|
|
|
command("variable input_dir index " + INPUT_FOLDER);
|
|
|
|
for (auto &pre_command : test_config.pre_commands) {
|
|
command(pre_command);
|
|
}
|
|
|
|
command("atom_style molecular");
|
|
command("units ${units}");
|
|
command("boundary p p p");
|
|
command("newton ${newton_pair} ${newton_bond}");
|
|
command("special_bonds lj/coul "
|
|
"${bond_factor} ${angle_factor} ${dihedral_factor}");
|
|
|
|
command("atom_modify map array");
|
|
command("region box block -10.0 10.0 -10.0 10.0 -10.0 10.0 units box");
|
|
|
|
command(fmt::format("create_box 1 box angle/types {} "
|
|
"extra/angle/per/atom 2 extra/special/per/atom 2",
|
|
nangletypes));
|
|
|
|
command("pair_style zero 8.0");
|
|
command("pair_coeff * *");
|
|
|
|
command("angle_style " + test_config.angle_style);
|
|
Angle *angle = lmp->force->angle;
|
|
|
|
for (auto &angle_coeff : test_config.angle_coeff) {
|
|
command("angle_coeff " + angle_coeff);
|
|
}
|
|
|
|
// create (only) three atoms and one angle
|
|
command("mass * 1.0");
|
|
command("create_atoms 1 single 5.0 -0.75 0.4 units box");
|
|
command("create_atoms 1 single 5.5 0.25 -0.1 units box");
|
|
command("create_atoms 1 single 5.0 0.75 0.4 units box");
|
|
command("create_bonds single/angle 1 1 2 3");
|
|
|
|
for (auto &post_command : test_config.post_commands) {
|
|
command(post_command);
|
|
}
|
|
|
|
command("run 0 post no");
|
|
if (!verbose) ::testing::internal::GetCapturedStdout();
|
|
|
|
int idx1 = lmp->atom->map(1);
|
|
int idx2 = lmp->atom->map(2);
|
|
int idx3 = lmp->atom->map(3);
|
|
double epsilon = test_config.epsilon;
|
|
double eangle[4], esingle[4];
|
|
|
|
eangle[0] = angle->energy;
|
|
esingle[0] = angle->single(1, idx1, idx2, idx3);
|
|
|
|
if (!verbose) ::testing::internal::CaptureStdout();
|
|
command("displace_atoms all random 0.5 0.5 0.5 23456");
|
|
command("run 0 post no");
|
|
if (!verbose) ::testing::internal::GetCapturedStdout();
|
|
|
|
idx1 = lmp->atom->map(1);
|
|
idx2 = lmp->atom->map(2);
|
|
idx3 = lmp->atom->map(3);
|
|
eangle[1] = angle->energy;
|
|
esingle[1] = angle->single(1, idx1, idx2, idx3);
|
|
|
|
if (!verbose) ::testing::internal::CaptureStdout();
|
|
command("displace_atoms all random 0.5 0.5 0.5 456963");
|
|
command("run 0 post no");
|
|
if (!verbose) ::testing::internal::GetCapturedStdout();
|
|
|
|
idx1 = lmp->atom->map(1);
|
|
idx2 = lmp->atom->map(2);
|
|
idx3 = lmp->atom->map(3);
|
|
eangle[2] = angle->energy;
|
|
esingle[2] = angle->single(1, idx1, idx2, idx3);
|
|
|
|
if (!verbose) ::testing::internal::CaptureStdout();
|
|
command("displace_atoms all random 0.5 0.5 0.5 9726532");
|
|
command("run 0 post no");
|
|
if (!verbose) ::testing::internal::GetCapturedStdout();
|
|
|
|
idx1 = lmp->atom->map(1);
|
|
idx2 = lmp->atom->map(2);
|
|
idx3 = lmp->atom->map(3);
|
|
eangle[3] = angle->energy;
|
|
esingle[3] = angle->single(1, idx1, idx2, idx3);
|
|
|
|
ErrorStats stats;
|
|
EXPECT_FP_LE_WITH_EPS(eangle[0], esingle[0], epsilon);
|
|
EXPECT_FP_LE_WITH_EPS(eangle[1], esingle[1], epsilon);
|
|
EXPECT_FP_LE_WITH_EPS(eangle[2], esingle[2], epsilon);
|
|
EXPECT_FP_LE_WITH_EPS(eangle[3], esingle[3], epsilon);
|
|
if (print_stats) std::cerr << "single_energy stats:" << stats << std::endl;
|
|
|
|
int i = 0;
|
|
for (auto &dist : test_config.equilibrium)
|
|
EXPECT_NEAR(dist, angle->equilibrium_angle(++i), 0.00001);
|
|
|
|
if (!verbose) ::testing::internal::CaptureStdout();
|
|
cleanup_lammps(lmp, test_config);
|
|
if (!verbose) ::testing::internal::GetCapturedStdout();
|
|
}
|
|
|
|
TEST(AngleStyle, extract)
|
|
{
|
|
if (test_config.skip_tests.count(test_info_->name())) GTEST_SKIP();
|
|
|
|
LAMMPS::argv args = {"AngleStyle", "-log", "none", "-echo", "screen", "-nocite"};
|
|
|
|
if (!verbose) ::testing::internal::CaptureStdout();
|
|
LAMMPS *lmp = init_lammps(args, test_config, true);
|
|
if (!verbose) ::testing::internal::GetCapturedStdout();
|
|
|
|
if (!lmp) {
|
|
std::cerr << "One or more prerequisite styles are not available "
|
|
"in this LAMMPS configuration:\n";
|
|
for (auto prerequisite : test_config.prerequisites) {
|
|
std::cerr << prerequisite.first << "_style " << prerequisite.second << "\n";
|
|
}
|
|
GTEST_SKIP();
|
|
}
|
|
|
|
auto angle = lmp->force->angle;
|
|
void *ptr = nullptr;
|
|
int dim = 0;
|
|
for (auto extract : test_config.extract) {
|
|
ptr = angle->extract(extract.first.c_str(), dim);
|
|
EXPECT_NE(ptr, nullptr);
|
|
EXPECT_EQ(dim, extract.second);
|
|
}
|
|
ptr = angle->extract("does_not_exist", dim);
|
|
EXPECT_EQ(ptr, nullptr);
|
|
|
|
for (int i = 1; i <= lmp->atom->nangletypes; ++i)
|
|
EXPECT_GE(angle->equilibrium_angle(i), 0.0);
|
|
|
|
if (!verbose) ::testing::internal::CaptureStdout();
|
|
cleanup_lammps(lmp, test_config);
|
|
if (!verbose) ::testing::internal::GetCapturedStdout();
|
|
}
|