public void ValidatePowerTradeCollection_DifferentDates_Expect_Exception()
        {
            // Arrange
            var tradesCount  = TestHelper.GenerateIntFrom1To99();
            var periodsCount = TestHelper.GenerateIntFrom1To99();
            var date         = new Fixture().Create <DateTime>();
            var powerTrades  = TestHelper.BuildPowerTradesCollection(tradesCount, periodsCount, date);

            powerTrades.FirstOrDefault().Date = date.AddDays(-10);

            // Assert
            Assert.Throws(typeof(ArgumentException), () => _manager.Validate(powerTrades));
        }