public void Ping()
        {
            PingObject ping = new PingObject()
            {
                PostgresMessage = "Postgres status: OK",
                RabbitMessage   = "Rabbit status: OK"
            };
            var mock = new Mock <IPingService>();

            mock.Setup(m => m.Ping()).Returns(ping);

            var controller = new CostsController(
                (new Mock <ICostsService>()).Object,
                (new Mock <ILoggerManager>()).Object,
                mock.Object);

            var result   = controller.Ping();
            var okResult = result as OkObjectResult;

            mock.VerifyAll();

            Assert.AreEqual(200, okResult.StatusCode);
        }