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/*! \internal \file
 * \brief
 * Tests for editconf
 *
 * \author Mark Abraham <mark.j.abraham@gmail.com>
 */

#include "gmxpre.h"

#include "gromacs/gmxpreprocess/editconf.h"

#include <tuple>

#include "gromacs/fileio/filetypes.h"

#include "testutils/cmdlinetest.h"
#include "testutils/filematchers.h"
#include "testutils/refdata.h"
#include "testutils/textblockmatchers.h"

namespace gmx
{
namespace test
{
namespace
{

using test::CommandLine;
using test::TextFileMatch;

//! Test parameter struct.
using CommandLineOptionParams = std::tuple<std::string, int>;

class EditconfTest :
    public test::CommandLineTestBase,
    public ::testing::WithParamInterface<CommandLineOptionParams>
{
public:
    EditconfTest()
    {
        const auto& params = GetParam();
        setInputFile("-f", std::get<0>(params));

        std::string outputfile = "output.";
        outputfile += ftp2ext(std::get<1>(params));
        ExactTextMatch settings;
        setOutputFile("-o", outputfile.c_str(), TextFileMatch(settings));
    }

    void runTest(const char* testName)
    {
        // Get the command line flags that were set up in the constructor
        CommandLine& cmdline = commandLine();

        // Provide the name of the module to call
        std::string module[] = { "editconf" };
        cmdline.merge(CommandLine(module));

        // Call the module
        ASSERT_EQ(0, gmx_editconf(cmdline.argc(), cmdline.argv()));

        // Check the output
        const auto*          extension = ftp2ext(std::get<1>(GetParam()));
        TestReferenceChecker rootChecker(this->rootChecker());
        rootChecker.checkString(extension, testName);
        checkOutputFiles();
    }
};

TEST_P(EditconfTest, ProducesMatchingOutputStructureFile)
{
    runTest("Output file type");
}

TEST_P(EditconfTest, ProducesMatchingOutputStructureFileUsingIndexGroup)
{
    setInputFile("-n", "A.ndx");
    runTest("Output file type using index group");
}

TEST_P(EditconfTest, HandlesCenter)
{
    commandLine().addOption("-c");
    runTest("Correct box dimensions with -c");
}

TEST_P(EditconfTest, HandlesCenterAndDiameter)
{
    commandLine().addOption("-c");
    commandLine().addOption("-d", 2.0);
    runTest("Correct box dimensions with -c and -d");
}

TEST_P(EditconfTest, HandlesBothNoCenterAndDiameter)
{
    commandLine().addOption("-noc");
    commandLine().addOption("-d", 1.5);
    runTest("Correct box dimensions with -d and -noc");
}

// TODO These reproduce slightly differently in double precision, and
// we don't yet have a precision-agnostic way to check on the output
// coordinates. It's better to run the tests only in single than not
// have the tests.
#if !GMX_DOUBLE
INSTANTIATE_TEST_SUITE_P(SinglePeptideFragments,
                         EditconfTest,
                         ::testing::Combine(::testing::Values("A.pdb", "A.gro", "A.g96"),
                                            ::testing::Values(efPDB, efGRO, efG96)));
#else
GTEST_ALLOW_UNINSTANTIATED_PARAMETERIZED_TEST(EditconfTest);
#endif

} // namespace
} // namespace test
} // namespace gmx
