public void ShoulGetTraderStatusBlack()
        {// Arrange
            TraderService traderService = new TraderService(
                this.provider,
                this.traderRep,
                this.logger);

            var trader = new Trader()
            {
                Id      = 0,
                name    = "Evgeniy",
                surname = "Nikulin",
                phone   = "+7()",
                money   = -100,
            };

            traderRep.GetTrader(0).Returns(trader);

            // Act

            var result = traderService.GetTraderStatus(0);

            // Assert
            Assert.AreEqual("Black status", result);
        }