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#include "test_precomp.hpp"

using namespace cv;
using namespace cv::gpu;
using namespace cv::cudev;
using namespace cvtest;

////////////////////////////////////////////////////////////////////////////////
// SqrtTest

template <typename T>
class SqrtTest : public ::testing::Test
{
public:
    void test_gpumat()
    {
        const Size size = randomSize(100, 400);
        const int type = DataType<T>::type;

        Mat src = randomMat(size, type);

        GpuMat_<T> d_src(src);

        GpuMat_<T> dst = sqrt_(d_src);

        Mat dst_gold;
        cv::sqrt(src, dst_gold);

        EXPECT_MAT_NEAR(dst_gold, dst, 0.0);
    }

    void test_expr()
    {
        const Size size = randomSize(100, 400);
        const int type = DataType<T>::type;

        Mat src1 = randomMat(size, type);
        Mat src2 = randomMat(size, type);

        GpuMat_<T> d_src1(src1), d_src2(src2);

        GpuMat_<T> dst = sqrt_(d_src1 * d_src2);

        Mat dst_gold;
        cv::multiply(src1, src2, dst_gold);
        cv::sqrt(dst_gold, dst_gold);

        EXPECT_MAT_NEAR(dst_gold, dst, 0.0);
    }
};

TYPED_TEST_CASE(SqrtTest, float);

TYPED_TEST(SqrtTest, GpuMat)
{
    SqrtTest<TypeParam>::test_gpumat();
}

TYPED_TEST(SqrtTest, Expr)
{
    SqrtTest<TypeParam>::test_expr();
}

////////////////////////////////////////////////////////////////////////////////
// MagnitudeTest

template <typename T>
class MagnitudeTest : public ::testing::Test
{
public:
    void test_accuracy()
    {
        const Size size = randomSize(100, 400);
        const int type = DataType<T>::type;

        Mat src1 = randomMat(size, type);
        Mat src2 = randomMat(size, type);

        GpuMat_<T> d_src1(src1), d_src2(src2);

        GpuMat_<T> dst1 = hypot_(d_src1, d_src2);
        GpuMat_<T> dst2 = magnitude_(d_src1, d_src2);
        GpuMat_<T> dst3 = sqrt_(sqr_(d_src1) + sqr_(d_src2));

        EXPECT_MAT_NEAR(dst1, dst2, 1e-4);
        EXPECT_MAT_NEAR(dst2, dst3, 0.0);
    }
};

TYPED_TEST_CASE(MagnitudeTest, float);

TYPED_TEST(MagnitudeTest, Accuracy)
{
    MagnitudeTest<TypeParam>::test_accuracy();
}

////////////////////////////////////////////////////////////////////////////////
// PowTest

template <typename T>
class PowTest : public ::testing::Test
{
public:
    void test_accuracy()
    {
        const Size size = randomSize(100, 400);
        const int type = DataType<T>::type;

        Mat src = randomMat(size, type);

        GpuMat_<T> d_src(src);

        GpuMat_<T> dst1 = pow_(d_src, 0.5);
        GpuMat_<T> dst2 = sqrt_(d_src);

        EXPECT_MAT_NEAR(dst1, dst2, 1e-5);
    }
};

TYPED_TEST_CASE(PowTest, float);

TYPED_TEST(PowTest, Accuracy)
{
    PowTest<TypeParam>::test_accuracy();
}