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#include "gmxpre.h"

#include "gromacs/restraint/manager.h"

#include <gtest/gtest.h>

namespace
{

class DummyRestraint : public gmx::IRestraintPotential
{
public:
    ~DummyRestraint() override = default;

    gmx::PotentialPointData evaluate(gmx::Vector gmx_unused r1,
                                     gmx::Vector gmx_unused r2,
                                     double gmx_unused      t) override
    {
        return {};
    }

    void update(gmx::Vector gmx_unused v, gmx::Vector gmx_unused v0, double gmx_unused t) override
    {
    }

    std::vector<int> sites() const override { return std::vector<int>(); }

    void bindSession(gmxapi::SessionResources* session) override { (void)session; }
};

TEST(RestraintManager, restraintList)
{
    auto managerInstance = gmx::RestraintManager();
    managerInstance.addToSpec(std::make_shared<DummyRestraint>(), "a");
    managerInstance.addToSpec(std::make_shared<DummyRestraint>(), "b");
    EXPECT_EQ(managerInstance.countRestraints(), 2);
    managerInstance.clear();
    EXPECT_EQ(managerInstance.countRestraints(), 0);
    managerInstance.addToSpec(std::make_shared<DummyRestraint>(), "c");
    managerInstance.addToSpec(std::make_shared<DummyRestraint>(), "d");
    EXPECT_EQ(managerInstance.countRestraints(), 2);
}

} // end namespace
