public void TestHasBadData() { //Arrange MockDataStore mockDataStore = new MockDataStore(); List <Trade> trades = mockDataStore.GetMockedWrongLimitTradeIdList(); //Act TradeLogicHelper tradeLogic = new TradeLogicHelper(); List <TradingGroupStatus> groupStatuses = tradeLogic.CheckGroupsError(trades); //Assert bool ErrorFound = false; foreach (var item in groupStatuses) { if (!item.HasNoErrors) { ErrorFound = true; } } Assert.IsTrue(ErrorFound); }