private static void DoesNotForceLoad(ObservableCollection <Contact> contacts, Func <SimpleIterator <Contact>, object> action)
{
var sourceCollection = new SourceCollection(contacts);
Assert.AreEqual(0, sourceCollection.GetEnumeratorCalls);
var contactIterator = new SimpleIterator <Contact>(sourceCollection.AsBindable());
Assert.AreEqual(0, sourceCollection.GetEnumeratorCalls);
action(contactIterator);
Assert.AreEqual(0, sourceCollection.GetEnumeratorCalls);
contactIterator.Dispose();
Assert.AreEqual(0, sourceCollection.GetEnumeratorCalls);
}
public void IteratorWithDepenedenciesDoesNotEnumerateSourceUntilResultIsEnumerated()
{
var sourceCollection = new SourceCollection(With.Inputs(Tom, Tim, Jack));
Assert.AreEqual(0, sourceCollection.GetEnumeratorCalls);
var contactIterator = new SimpleIterator <Contact>(sourceCollection.AsBindable());
Assert.AreEqual(0, sourceCollection.GetEnumeratorCalls);
contactIterator.AcceptDependency(new ItemDependencyDefinition("Name"));
Assert.AreEqual(0, sourceCollection.GetEnumeratorCalls);
foreach (var c in contactIterator)
{
}
Assert.AreEqual(1, sourceCollection.GetEnumeratorCalls);
contactIterator.Dispose();
Assert.AreEqual(1, sourceCollection.GetEnumeratorCalls);
}