public void JsonSerializationServiceTest()
        {
            ISerializationService serializationService = new JsonSerializationService();

            var data = new Dictionary <char, double>
            {
                ['а'] = 0.5,
                ['б'] = 0.25,
                ['в'] = 0.333
            };
            var serializedData = serializationService.SerializeData(data);

            const string expectedResult = "{\"а\":0.5,\"б\":0.25,\"в\":0.333}";

            Assert.That(serializedData == expectedResult);
        }