#include "../../src/ErrorSimulator.hpp"
#include "../Tests.hpp"
#include "core/utils/Utility.hpp"

static void testPopCount() {
    CORE_TEST_EQUAL(4, Core::popCount(0xF));
    CORE_TEST_EQUAL(0, Core::popCount(0x0));
    CORE_TEST_EQUAL(2, Core::popCount(0x6));
    CORE_TEST_EQUAL(7, Core::popCount(0x7F));
    CORE_TEST_EQUAL(3, Core::popCount(0x2A));
    CORE_TEST_EQUAL(32, Core::popCount(0xFFFFFFFF));
    CORE_TEST_EQUAL(64, Core::popCount(0xFFFFFFFFFFFFFFFFL));
    CORE_TEST_EQUAL(44, Core::popCount(0xFFFF0FFFFFFF));
    CORE_TEST_EQUAL(32, Core::popCount(-1));
}

static void testIf() {
    CORE_TEST_TRUE((Core::IsSame<Core::If<true, int, double>, int>));
    CORE_TEST_TRUE((Core::IsSame<Core::If<false, int, double>, double>));
}

static void testZeroRellocate() {
    char* buffer = nullptr;
    CORE_TEST_ERROR(Core::reallocate(buffer, 16));
    CORE_TEST_TRUE(buffer != nullptr);
    CORE_TEST_ERROR(Core::reallocate(buffer, 0));
    CORE_TEST_TRUE(buffer == nullptr);
}

static void testReallocateFail() {
#ifdef ERROR_SIMULATOR
    char* buffer = nullptr;
    Core::Fail::realloc = true;
    CORE_TEST_EQUAL(Core::ErrorCode::OUT_OF_MEMORY,
                    Core::reallocate(buffer, 16));
    CORE_TEST_TRUE(buffer == nullptr);
    Core::Fail::realloc = false;
#endif
}

void Core::testUtility() {
    testPopCount();
    testIf();
    testZeroRellocate();
    testReallocateFail();
}