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/*! \internal \file
 * \brief
 * Tests for functionality of the "trajectory" trajectory analysis module.
 *
 * Line coverage for the module code is good, but due to missing input data
 * with velocities or forces, the output of these quantities is not really
 * tested.  But the values are only computed in the selection engine, and
 * at least the low-level computation is tested there.
 *
 * \author Teemu Murtola <teemu.murtola@gmail.com>
 * \ingroup module_trajectoryanalysis
 */
#include "gmxpre.h"

#include "gromacs/trajectoryanalysis/modules/trajectory.h"

#include <gtest/gtest.h>

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

#include "moduletest.h"

namespace
{

using gmx::test::CommandLine;
using gmx::test::NoTextMatch;

/********************************************************************
 * Tests for gmx::analysismodules::Trajectory.
 */

//! Test fixture for the select analysis module.
typedef gmx::test::TrajectoryAnalysisModuleTestFixture<gmx::analysismodules::TrajectoryInfo> TrajectoryModuleTest;

TEST_F(TrajectoryModuleTest, BasicTest)
{
    const char* const cmdline[] = { "trajectory", "-select", "resnr 1", "resnr 3" };
    setTopology("simple.gro");
    setTrajectory("simple.gro");
    setOutputFile("-ox", "coord.xvg", NoTextMatch());
    includeDataset("x");
    runTest(CommandLine(cmdline));
}

TEST_F(TrajectoryModuleTest, PlotsXOnly)
{
    const char* const cmdline[] = { "trajectory", "-select", "resnr 1", "resnr 3", "-x" };
    setTopology("simple.gro");
    setTrajectory("simple.gro");
    setOutputFile("-ox", "coord.xvg", NoTextMatch());
    includeDataset("x");
    runTest(CommandLine(cmdline));
}

TEST_F(TrajectoryModuleTest, HandlesNoVelocities)
{
    const char* const cmdline[] = {
        "trajectory",
        "-select",
        "resnr 1",
        "resnr 3",
    };
    setTopology("simple.gro");
    setTrajectory("simple.gro");
    setOutputFile("-ov", "vel.xvg", NoTextMatch());
    includeDataset("v");
    runTest(CommandLine(cmdline));
}

TEST_F(TrajectoryModuleTest, HandlesNoForces)
{
    const char* const cmdline[] = {
        "trajectory",
        "-select",
        "resnr 1",
        "resnr 3",
    };
    setTopology("simple.gro");
    setTrajectory("simple.gro");
    setOutputFile("-of", "force.xvg", NoTextMatch());
    includeDataset("f");
    runTest(CommandLine(cmdline));
}

} // namespace
