#include "gtest/gtest.h"

#include "kompute/Kompute.hpp"

TEST(TestOpTensorCreate, CreateSingleTensorSingleOp)
{
    std::vector<float> testVecA{ 9, 8, 7 };
    std::shared_ptr<kp::Tensor> tensorA{ new kp::Tensor(testVecA) };

    {
        kp::Manager mgr;

        mgr.rebuild({ tensorA });

        EXPECT_TRUE(tensorA->isInit());

        EXPECT_EQ(tensorA->data(), testVecA);
    }

    EXPECT_FALSE(tensorA->isInit());
}

TEST(TestOpTensorCreate, CreateMultipleTensorSingleOp)
{

    kp::Manager mgr;

    std::vector<float> testVecA{ 9, 8, 7 };
    std::vector<float> testVecB{ 6, 5, 4 };

    std::shared_ptr<kp::Tensor> tensorA{ new kp::Tensor(testVecA) };
    std::shared_ptr<kp::Tensor> tensorB{ new kp::Tensor(testVecB) };

    mgr.rebuild({ tensorA, tensorB });

    EXPECT_TRUE(tensorA->isInit());
    EXPECT_TRUE(tensorB->isInit());

    EXPECT_EQ(tensorA->data(), testVecA);
    EXPECT_EQ(tensorB->data(), testVecB);
}

TEST(TestOpTensorCreate, CreateMultipleTensorMultipleOp)
{

    kp::Manager mgr;

    std::vector<float> testVecA{ 9, 8, 7 };
    std::vector<float> testVecB{ 6, 5, 4 };

    std::shared_ptr<kp::Tensor> tensorA{ new kp::Tensor(testVecA) };
    std::shared_ptr<kp::Tensor> tensorB{ new kp::Tensor(testVecB) };

    mgr.rebuild({ tensorA });
    mgr.rebuild({ tensorB });

    EXPECT_TRUE(tensorA->isInit());
    EXPECT_TRUE(tensorB->isInit());

    EXPECT_EQ(tensorA->data(), testVecA);
    EXPECT_EQ(tensorB->data(), testVecB);
}

TEST(TestOpTensorCreate, TestTensorMemoryManagedByManagerDestroyed)
{

    std::vector<float> testVecA{ 9, 8, 7 };
    std::vector<float> testVecB{ 6, 5, 4 };

    std::shared_ptr<kp::Tensor> tensorA{ new kp::Tensor(testVecA) };
    std::shared_ptr<kp::Tensor> tensorB{ new kp::Tensor(testVecB) };

    {
        kp::Manager mgr;
        mgr.rebuild({ tensorA });
        mgr.rebuild({ tensorB });

        EXPECT_TRUE(tensorA->isInit());
        EXPECT_TRUE(tensorB->isInit());

        EXPECT_EQ(tensorA->data(), testVecA);
        EXPECT_EQ(tensorB->data(), testVecB);
    }

    EXPECT_FALSE(tensorA->isInit());
    EXPECT_FALSE(tensorB->isInit());
}

TEST(TestOpTensorCreate, TestTensorMemoryManagedByManagerNOTDestroyed)
{

    std::vector<float> testVecA{ 9, 8, 7 };
    std::vector<float> testVecB{ 6, 5, 4 };

    std::shared_ptr<kp::Tensor> tensorA{ new kp::Tensor(testVecA) };
    std::shared_ptr<kp::Tensor> tensorB{ new kp::Tensor(testVecB) };

    kp::Manager mgr;

    {
        mgr.rebuild({ tensorA });
        mgr.rebuild({ tensorB });

        EXPECT_TRUE(tensorA->isInit());
        EXPECT_TRUE(tensorB->isInit());

        EXPECT_EQ(tensorA->data(), testVecA);
        EXPECT_EQ(tensorB->data(), testVecB);
    }

    EXPECT_TRUE(tensorA->isInit());
    EXPECT_TRUE(tensorB->isInit());
}

TEST(TestOpTensorCreate, NoErrorIfTensorFreedBefore)
{

    std::vector<float> testVecA{ 9, 8, 7 };
    std::vector<float> testVecB{ 6, 5, 4 };

    std::shared_ptr<kp::Tensor> tensorA{ new kp::Tensor(testVecA) };
    std::shared_ptr<kp::Tensor> tensorB{ new kp::Tensor(testVecB) };

    kp::Manager mgr;

    mgr.rebuild({ tensorA });
    mgr.rebuild({ tensorB });

    EXPECT_TRUE(tensorA->isInit());
    EXPECT_TRUE(tensorB->isInit());

    EXPECT_EQ(tensorA->data(), testVecA);
    EXPECT_EQ(tensorB->data(), testVecB);

    tensorA->freeMemoryDestroyGPUResources();
    tensorB->freeMemoryDestroyGPUResources();
    EXPECT_FALSE(tensorA->isInit());
    EXPECT_FALSE(tensorB->isInit());
}

TEST(TestOpTensorCreate, ExceptionOnZeroSizeTensor)
{
    std::vector<float> testVecA;

    std::shared_ptr<kp::Tensor> tensorA{ new kp::Tensor(testVecA) };

    kp::Manager mgr;

    try {
        mgr.rebuild({ tensorA });
    } catch (const std::runtime_error& err) {
        // check exception
        ASSERT_TRUE(std::string(err.what()).find("zero-sized") !=
                    std::string::npos);
    }
}