#include "py_variant.h"
#include "py_test_engine.h"

#include <library/cpp/testing/unittest/registar.h>

using namespace NPython;

Y_UNIT_TEST_SUITE(TPyVariantTest) {
Y_UNIT_TEST(FromPyWithIndex) {
    TPythonTestEngine engine;
    engine.ToMiniKQL<NUdf::TVariant<float, ui32, char*>>(
        "def Test():\n"
        "    return (2, 'hello')\n",
        [](const NUdf::TUnboxedValuePod& value) {
            UNIT_ASSERT(value);
            UNIT_ASSERT_EQUAL(value.GetVariantIndex(), 2);
            auto item = value.GetVariantItem();
            UNIT_ASSERT_STRINGS_EQUAL(item.AsStringRef(), "hello");
        });
}

Y_UNIT_TEST(FromPyWithName) {
    TPythonTestEngine engine;

    ui32 ageIdx = 0;
    ui32 nameIdx = 0;
    NUdf::TType* personType = engine.GetTypeBuilder().Struct()->AddField<ui32>("age", &ageIdx).AddField<char*>("name", &nameIdx).Build();

    NUdf::TType* variantType = engine.GetTypeBuilder()
                                   .Variant()
                                   ->Over(personType)
                                   .Build();

    engine.ToMiniKQL(
        variantType,
        "def Test():\n"
        "    return ('age', 99)\n",
        [ageIdx](const NUdf::TUnboxedValuePod& value) {
            UNIT_ASSERT(value);
            UNIT_ASSERT_EQUAL(value.GetVariantIndex(), ageIdx);
            auto item = value.GetVariantItem();
            UNIT_ASSERT_EQUAL(item.Get<ui32>(), 99);
        });

    engine.ToMiniKQL(
        variantType,
        "def Test():\n"
        "    return ('name', 'Jamel')\n",
        [nameIdx](const NUdf::TUnboxedValuePod& value) {
            UNIT_ASSERT(value);
            UNIT_ASSERT_EQUAL(value.GetVariantIndex(), nameIdx);
            auto item = value.GetVariantItem();
            UNIT_ASSERT_STRINGS_EQUAL(item.AsStringRef(), "Jamel");
        });
}

Y_UNIT_TEST(ToPyWithIndex) {
    TPythonTestEngine engine;
    engine.ToPython<NUdf::TVariant<float, ui32, char*>>(
        [](const TType* /*type*/, const NUdf::IValueBuilder& vb) {
            return vb.NewVariant(1, NUdf::TUnboxedValuePod((ui32)42));
        },
        "def Test(value):\n"
        "    assert isinstance(value, tuple)\n"
        "    assert value == (1, 42)\n");
}

Y_UNIT_TEST(ToPyWithName) {
    TPythonTestEngine engine;

    ui32 ageIdx = 0;
    ui32 nameIdx = 0;
    NUdf::TType* personType = engine.GetTypeBuilder().Struct()->AddField<ui32>("age", &ageIdx).AddField<NUdf::TUtf8>("name", &nameIdx).Build();

    NUdf::TType* variantType = engine.GetTypeBuilder()
                                   .Variant()
                                   ->Over(personType)
                                   .Build();

    engine.ToPython(
        variantType,
        [ageIdx](const TType* /*type*/, const NUdf::IValueBuilder& vb) {
            return vb.NewVariant(ageIdx, NUdf::TUnboxedValuePod((ui32)99));
        },
        "def Test(value):\n"
        "    assert isinstance(value, tuple)\n"
        "    assert value == ('age', 99)\n");

    engine.ToPython(
        variantType,
        [nameIdx](const TType* /*type*/, const NUdf::IValueBuilder& vb) {
            return vb.NewVariant(nameIdx, vb.NewString("Jamel"));
        },
        "def Test(value):\n"
        "    assert isinstance(value, tuple)\n"
        "    assert value == ('name', 'Jamel')\n");
}
} // Y_UNIT_TEST_SUITE(TPyVariantTest)