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path: root/util/generic/singleton_ut.cpp
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#include "singleton.h"

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

Y_UNIT_TEST_SUITE(TestSingleton) {
    struct THuge {
        char Buf[1000000];
        int V = 1234;
    };

    Y_UNIT_TEST(TestHuge) {
        UNIT_ASSERT_VALUES_EQUAL(*HugeSingleton<int>(), 0);
        UNIT_ASSERT_VALUES_EQUAL(HugeSingleton<THuge>()->V, 1234);
    }
 
    struct TWithParams { 
        explicit TWithParams(const ui32 data1 = 0, const TString& data2 = TString()) 
            : Data1(data1) 
            , Data2(data2) 
        { 
        } 
 
        ui32 Data1; 
        TString Data2; 
    }; 
 
    Y_UNIT_TEST(TestConstructorParamsOrder) {
        UNIT_ASSERT_VALUES_EQUAL(Singleton<TWithParams>(10, "123123")->Data1, 10); 
        UNIT_ASSERT_VALUES_EQUAL(Singleton<TWithParams>(20, "123123")->Data1, 10); 
        UNIT_ASSERT_VALUES_EQUAL(Singleton<TWithParams>(10, "456456")->Data2, "123123"); 
    } 
 
    Y_UNIT_TEST(TestInstantiationWithConstructorParams) {
        UNIT_ASSERT_VALUES_EQUAL(Singleton<TWithParams>(10)->Data1, 10); 
        UNIT_ASSERT_VALUES_EQUAL(HugeSingleton<TWithParams>(20, "123123")->Data2, "123123"); 
        { 
            const auto value = SingletonWithPriority<TWithParams, 12312>(30, "456")->Data1; 
            UNIT_ASSERT_VALUES_EQUAL(value, 30); 
        } 
        { 
            const auto value = HugeSingletonWithPriority<TWithParams, 12311>(40, "789")->Data2; 
            UNIT_ASSERT_VALUES_EQUAL(value, "789"); 
        } 
        UNIT_ASSERT_VALUES_EQUAL(Default<TWithParams>().Data1, 0); 
    } 
}