我正在使用Moq和EF6。
我需要查询一个表，如果表中的日期少于5个，我需要添加更多。
所以，我在我的代码中这样做：
public void FillPartyList(ObservableCollection<Party> argPartyList)
{
argPartyList.Clear();
using (IPartyTrackerDataAccess localDb = Locator.Resolve<IPartyTrackerDataAccess>())
{
InitializeDates(localDb);
var localList = (from tempList in localDb.Parties
where tempList.PartyDate >= DateTime.Now.Date
select tempList);
foreach (Party currentParty in localList)
{
argPartyList.Add(currentParty);
}
}
}
Inside＆＃34; InitializeDates＆＃34;我查询数据库以查看有多少日期，然后添加足够的日期5.有关于创建日期的规则[例如只在星期五或星期六等]所以这不是微不足道的。然后，当方法返回时，我从数据库中获取完整列表并将其添加到参数中。
当我尝试测试时，问题出现了。这是我的考验。
public void TestInitializeDates()
{
//Expected data
int callCount = 0;
int addParty = 0;
int saveChanges = 0;
ObservableCollection<Party> PartyList = new ObservableCollection<Party>();
//Mock data
IQueryable<Party> partyData = new List<Party>().AsQueryable();
IQueryable<SystemSetting> settingsData = new List<SystemSetting>().AsQueryable();
//Setup mock
Mock<PartyTrackerEntities> mockContext = SetupDbContext();
SetupApplicationSettings(mockContext, settingsData);
SetupPartyDbSet(mockContext, partyData);
Locator.Register<IApplicationSettings, ApplicationSettings>();
//If I keep the following line I get an exception when querying the "database" for parties.
mockContext.Setup(m => m.Parties.Add(It.IsAny<Party>())).Callback(() => addParty = callCount++);
mockContext.Setup(m => m.SaveChanges()).Callback(() => saveChanges = callCount++);
//Run tests
PartyTrackerModel localModel = new PartyTrackerModel();
localModel.FillPartyList(PartyList);
Assert.AreEqual(1, callCount);
Assert.AreEqual(0, saveChanges);
}
private Mock<DbSet<Party>> SetupPartyDbSet(Mock<PartyTrackerEntities> argDbContext, IQueryable<Party> argPartyData)
{
//Mock objects
Mock<DbSet<Party>> mockPartySet = new Mock<DbSet<Party>>();
mockPartySet.As<IQueryable<Party>>().Setup(m => m.Provider).Returns(argPartyData.Provider);
mockPartySet.As<IQueryable<Party>>().Setup(m => m.Expression).Returns(argPartyData.Expression);
mockPartySet.As<IQueryable<Party>>().Setup(m => m.ElementType).Returns(argPartyData.ElementType);
mockPartySet.As<IQueryable<Party>>().Setup(m => m.GetEnumerator()).Returns(argPartyData.GetEnumerator());
argDbContext.Setup(m => m.Parties).Returns(mockPartySet.Object);
return mockPartySet;
}
一切正常，直到我添加增加计数器的设置，然后InitializeDates（）中的Linq失败。
如何递增计数器并保留DbSet＆lt;＆gt;嘲弄吗？我如何查询＆＃34;数据库＆＃34;并仍然计算添加的调用？如果我设置Context.Parties.Add（）来计算调用，则linq查询会爆炸。
我做错了什么？
编辑：添加InitializeDates（）。注意：在添加Moq.Callback之前，这些都没有问题。
private static void InitializeDates(IPartyTrackerDataAccess argLocalDb)
{
IApplicationSettings localAppSettings = Locator.Resolve<IApplicationSettings>();
//using (PartyTrackerEntities LocalDb = new PartyTrackerEntities())
{
//TODO: Move this code to the PartyTrackerDb class.
//Technically this would communicate with the database and
//make sure there are at least 5 parties in the future.
var SqlPartyList = from LinqList in argLocalDb.Parties
where LinqList.PartyDate >= DateTime.Now.Date
select LinqList;
List<Party> PartyList;
try
{
PartyList = SqlPartyList.OrderByDescending(argOrder => argOrder.PartyDate).Take(5).ToList();
}
catch (SqlException)
{
//MessageBox.Show("Cannot connect to database. Please ensure that SQLServer is running and accessable from this machine.");
throw;
}
if (PartyList.Count < 5)
{
DateTime MaxPartyDate = PartyList.Count <= 0
? DateTime.Now.Date.AddDays(-1)
: PartyList.Max(argMaxDate => argMaxDate.PartyDate);
//<= 4 because PartyList.Count is zero-based so this is 5 parties.
for (int ShortDayCount = PartyList.Count; ShortDayCount <= 4; ShortDayCount++)
{
int dateOffset;
decimal coupleDonation;
decimal singleMaleDonation;
decimal singleFemaleDonation;
decimal sponsoredMaleDonation;
if (MaxPartyDate.DayOfWeek == DayOfWeek.Friday) //If the last party in the list is on a Friday, then we need to add a Saturday
{
//Get the Donation amounts
//Get Saturday Donations
coupleDonation = localAppSettings.SatCoupleDonation;
singleMaleDonation = localAppSettings.SatSingleMaleDonation;
singleFemaleDonation = localAppSettings.SatSingleFemaleDonation;
sponsoredMaleDonation = localAppSettings.SatSponsoredMaleDonation;
//Add Sat
dateOffset = 1;
}
else //Otherwise we need to add a Friday
{
//Get the Donation amounts
//Get Friday Donations
coupleDonation = localAppSettings.FriCoupleDonation;
singleMaleDonation = localAppSettings.FriSingleMaleDonation;
singleFemaleDonation = localAppSettings.FriSingleFemaleDonation;
sponsoredMaleDonation = localAppSettings.FriSponsoredMaleDonation;
if (MaxPartyDate.DayOfWeek == DayOfWeek.Saturday)
{
dateOffset = 6;
}
else
{
dateOffset = 5 - (int)MaxPartyDate.DayOfWeek;
}
}
Party NewParty = new Party
{
PartyDate = MaxPartyDate.AddDays(dateOffset),
CoupleDonation = coupleDonation,
SingleMaleDonation = singleMaleDonation,
SingleFemaleDonation = singleFemaleDonation,
SponsoredMaleDonation = sponsoredMaleDonation
};
argLocalDb.Parties.Add(NewParty);
MaxPartyDate = NewParty.PartyDate;
}
argLocalDb.SaveChanges();
}
}
}