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#include "src/metafs/mim/mio.h"

#include <gmock/gmock.h>
#include <gtest/gtest.h>

#include "test/unit-tests/metafs/config/metafs_config_manager_mock.h"
#include "test/unit-tests/metafs/mim/mpio_allocator_mock.h"

using ::testing::NiceMock;
using ::testing::Return;

namespace pos
{
using MioStateHandler = std::function<bool(MioState)>;

class MioStateExecuteEntryTexture : public ::testing::Test
{
public:
    MioStateExecuteEntryTexture(void)
    {
    }
    ~MioStateExecuteEntryTexture(void)
    {
    }
    virtual void SetUp(void) override
    {
        entry = nullptr;
        result = false;
    }
    virtual void TearDown(void) override
    {
        if (entry)
            delete entry;
    }
    bool CallbackTest(MioState st)
    {
        if (state == st)
            result = true;

        return true;
    }

protected:
    MioState state;
    MioStateHandler handler;
    MioState expNextState;
    bool result;

    MioStateExecuteEntry* entry;
};

TEST_F(MioStateExecuteEntryTexture, Constructor)
{
    state = MioState::Complete;
    handler = nullptr;
    expNextState = MioState::Error;

    entry = new MioStateExecuteEntry(state, handler, expNextState);
}

TEST_F(MioStateExecuteEntryTexture, GetState_testIfTheStateSetByTheConstructorCanBeReturned)
{
    state = MioState::Complete;
    handler = nullptr;
    expNextState = MioState::Error;

    entry = new MioStateExecuteEntry(state, handler, expNextState);

    EXPECT_EQ(entry->GetState(), MioState::Complete);
    EXPECT_EQ(entry->GetExpNextState(), MioState::Error);
}

TEST_F(MioStateExecuteEntryTexture, DispatchHandler_testIfTheCallbackSetByTheConstructorCanBeCalled)
{
    state = MioState::Complete;
    handler = std::bind(&MioStateExecuteEntryTexture::CallbackTest, this, std::placeholders::_1);
    expNextState = MioState::Error;

    EXPECT_FALSE(result);

    entry = new MioStateExecuteEntry(state, handler, expNextState);
    entry->DispatchHandler(MioState::Complete);

    EXPECT_TRUE(result);
}
} // namespace pos

namespace pos
{
TEST(Mio, GetId_testIfTheUniqueIdIsUnique)
{
    NiceMock<MockMetaFsConfigManager> conf(nullptr);
    ON_CALL(conf, GetMpioPoolCapacity).WillByDefault(Return(1));

    MpioAllocator* mpioAllocator = new NiceMock<MockMpioAllocator>(&conf);

    Mio m1(mpioAllocator);
    Mio m2(mpioAllocator);

    EXPECT_NE(m1.GetId(), m2.GetId());

    delete mpioAllocator;
}
} // namespace pos
