public void ShouldUpdate() { using (var context = new AmfMoneyContext(_options)) { context.Add(new Trade() { OperationType = 'B' }); context.SaveChanges(); } using (var context = new AmfMoneyContext(_options)) { var service = new TradeService(context); var trade = context.Find <Trade>(1); trade.OperationType = 'S'; service.Update(trade); } using (var context = new AmfMoneyContext(_options)) { var trade = context.Find <Trade>(1); Assert.Equal('S', trade.OperationType); } }