c# - 创建一个 NUnit 约束，意思是 "{collection} does not contain {item}"

Question

我正在努力断言枚举中缺少特定项目。具体来说，我的测试是这样的:

// Take an item from a queue of scheduled items...
ItemQueue pendingQueue = schedule.PendingItems; // PendingItems is an IEnumerable<int>
int item = pendingQueue.FirstItem;

// ...process the item...
processor.DoSomethingWith(item);

// ...and the schedule must not contain the item anymore:
Assert.That(schedule.PendingItems, Does.Not.Contain(item));

当然，Does.Not.Contain 不是有效的 nUnit 约束。我怎样才能用有效的流利语法表达它？

Answer 1

Assert.That(schedule.PendingItems, Has.No.Member(item))

仅适用于 NUnit 2.4/2.5