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));
}