public void ReplaceRange_Always_CallsNotifyCollectionChangedOnlyOnce()
{
int timesCalled = 0;
IEnumerable <Person> people = GetPeople();
_target.AddRange(people);
_target.CollectionChanged += (sender, e) => timesCalled++;
var peopleAgeFive = GetPeopleWithAge(5);
_target.ReplaceRange(0, peopleAgeFive);
Assert.AreEqual(1, timesCalled);
}
public void ReplaceRangeOnSecond_FirstContainsNewItems_RaisesNotifyCollectionChangedWithOneAddAndRemoveActionsForEachItemReplacedRemoved2()
{
var people = new List <Person> {
new Person(), new Person()
};
_first = new ObservableCollection <Person> {
_person1, _person2, people[0], people[1]
};
var continuousSecondCollection = new ContinuousCollection <Person> {
_person1, _person2
};
_target = new ExceptReadOnlyContinuousCollection <Person>(_first, continuousSecondCollection);
var eventArgsList = TestUtilities.GetCollectionChangedEventArgsList(_target);
continuousSecondCollection.ReplaceRange(0, people);
Assert.AreEqual(3, eventArgsList.Count);
TestUtilities.AssertAdd(eventArgsList[0], 2, _person1, _person2);
TestUtilities.AssertRemove(eventArgsList[1], 0, people[0]);
TestUtilities.AssertRemove(eventArgsList[2], 0, people[1]);
}
public void ReplaceRangeOnSecond_Always_RaisesNotifyCollectionChangedWithReplaceAction()
{
var continuousSecondCollection = new ContinuousCollection <Person>(_first.ToList());
_target = new ConcatReadOnlyContinuousCollection <Person>(_first, continuousSecondCollection);
var people = new List <Person> {
new Person(), new Person()
};
var eventArgsList = TestUtilities.GetCollectionChangedEventArgsList(_target);
continuousSecondCollection.ReplaceRange(0, people);
Assert.AreEqual(1, eventArgsList.Count);
TestUtilities.AssertReplace(eventArgsList[0], 2, people.ToArray(), new[] { _person1, _person2 });
}
public void ReplaceRangeOnFirst_Always_RaisesNotifyCollectionChangedWithRemoveActionsForEachItemReplacedAndOneAdd()
{
var continuousFirstCollection = new ContinuousCollection <Person>(_first.ToList());
_target = new ExceptReadOnlyContinuousCollection <Person>(continuousFirstCollection, _second);
var people = new List <Person> {
new Person(), new Person()
};
var eventArgsList = TestUtilities.GetCollectionChangedEventArgsList(_target);
continuousFirstCollection.ReplaceRange(0, people);
Assert.AreEqual(3, eventArgsList.Count);
TestUtilities.AssertRemove(eventArgsList[0], 0, _person1);
TestUtilities.AssertRemove(eventArgsList[1], 0, _person2);
TestUtilities.AssertAdd(eventArgsList[2], 0, people.ToArray());
}
public void ReplaceRangeOnSecond_FirstContainsNewItems_RaisesNotifyCollectionChangedWithOneAddAndRemoveActionsForEachItemReplacedRemoved2()
{
var people = new List<Person> { new Person(), new Person() };
_first = new ObservableCollection<Person> { _person1, _person2, people[0], people[1] };
var continuousSecondCollection = new ContinuousCollection<Person> { _person1, _person2 };
_target = new ExceptReadOnlyContinuousCollection<Person>(_first, continuousSecondCollection);
var eventArgsList = TestUtilities.GetCollectionChangedEventArgsList(_target);
continuousSecondCollection.ReplaceRange(0, people);
Assert.AreEqual(3, eventArgsList.Count);
TestUtilities.AssertAdd(eventArgsList[0], 2, _person1, _person2);
TestUtilities.AssertRemove(eventArgsList[1], 0, people[0]);
TestUtilities.AssertRemove(eventArgsList[2], 0, people[1]);
}
public void ReplaceRangeOnFirst_Always_RaisesNotifyCollectionChangedWithRemoveActionsForEachItemReplacedAndOneAdd()
{
var continuousFirstCollection = new ContinuousCollection<Person>(_first.ToList());
_target = new ExceptReadOnlyContinuousCollection<Person>(continuousFirstCollection, _second);
var people = new List<Person> { new Person(), new Person() };
var eventArgsList = TestUtilities.GetCollectionChangedEventArgsList(_target);
continuousFirstCollection.ReplaceRange(0, people);
Assert.AreEqual(3, eventArgsList.Count);
TestUtilities.AssertRemove(eventArgsList[0], 0, _person1);
TestUtilities.AssertRemove(eventArgsList[1], 0, _person2);
TestUtilities.AssertAdd(eventArgsList[2], 0, people.ToArray());
}