public void Remove_DoesNotRaisesCollectionChanged_WhenCollectionDoesNotContainItem()
{
bool flag = false;
var observableHash = new ObservableHashSet<int>();
observableHash.CollectionChanged += (sender, args) => flag = true;
observableHash.Remove(1);
Assert.False(flag);
}
public void Remove_RaisesCollectionChanged()
{
bool flag = false;
var observableHash = new ObservableHashSet<int>() {1};
observableHash.CollectionChanged += (sender, args) => flag = true;
observableHash.Remove(1);
Assert.True(flag);
}
public void Can_remove()
{
var hashSet = new ObservableHashSet <string> {
"Palmer", "Carmack"
};
var countChanging = 0;
var countChanged = 0;
var collectionChanged = 0;
var currentCount = 2;
var countChange = -1;
var removing = new string[0];
hashSet.PropertyChanging += (s, a) => AssertCountChanging(hashSet, s, a, currentCount, ref countChanging);
hashSet.PropertyChanged += (s, a) => AssertCountChanged(hashSet, s, a, ref currentCount, countChange, ref countChanged);
hashSet.CollectionChanged += (s, a) =>
{
Assert.Equal(NotifyCollectionChangedAction.Remove, a.Action);
Assert.Equal(removing, a.OldItems.OfType <string>());
Assert.Null(a.NewItems);
collectionChanged++;
};
removing = new[] { "Palmer" };
Assert.True(hashSet.Remove("Palmer"));
Assert.Equal(1, countChanging);
Assert.Equal(1, countChanged);
Assert.Equal(1, collectionChanged);
Assert.Equal(new[] { "Carmack" }, hashSet);
removing = new[] { "Carmack" };
Assert.True(hashSet.Remove("Carmack"));
Assert.Equal(2, countChanging);
Assert.Equal(2, countChanged);
Assert.Equal(2, collectionChanged);
Assert.Empty(hashSet);
Assert.False(hashSet.Remove("Palmer"));
Assert.Equal(2, countChanging);
Assert.Equal(2, countChanged);
Assert.Equal(2, collectionChanged);
Assert.Empty(hashSet);
}
public void Items_removed_from_ObservableHashSet_are_removed_from_binding_list()
{
var item = new ListElement(4);
var oc = new ObservableHashSet <ListElement> {
3, 1, item, 1, 5, 9
};
var obbl = new ObservableBackedBindingList <ListElement>(oc);
oc.Remove(item);
Assert.False(obbl.Contains(item));
Assert.Equal(5, obbl.Count);
}
public void TrimExcess_doesnt_throw()
{
var bigData = CreateTestData();
var smallData = CreateTestData(10);
var hashSet = new ObservableHashSet <int>(bigData.Concat(smallData));
foreach (var item in bigData)
{
hashSet.Remove(item);
}
hashSet.TrimExcess();
}
public void StartFollowActions(ObservableHashSet <FollowerUI> toFollow,
ObservableHashSet <FollowerUI> unFollow, Action <ActionPerformArgument> callback)
{
var args = new ActionPerformArgument
{
Total = toFollow.Count + unFollow.Count,
Performed = 0
};
foreach (var l in toFollow)
{
var task = _instaApi.FollowUserAsync(l.OtherUser.Pk);
task.GetAwaiter().OnCompleted(
() =>
{
args.Performed++;
if (!task.Result.Value.Following)
{
toFollow.Remove(l);
}
callback(args);
});
}
foreach (var l in unFollow)
{
var task = _instaApi.UnFollowUserAsync(l.OtherUser.Pk);
task.GetAwaiter().OnCompleted(
() => {
args.Performed++;
if (task.Result.Value.Following)
{
unFollow.Remove(l);
}
callback(args);
});
}
}
public void WhenRemove_ThenRaisesCountPropertyChanged() {
// Arrange
var target = new ObservableHashSet<int>();
target.Add(1);
target.Add(2);
target.Add(3);
target.Add(4);
bool wasEventRaised = false;
target.PropertyChanged += (s, e) => {
if (e.PropertyName == ObservableHashSet<int>.PropertyNames.Count) {
wasEventRaised = true;
}
};
// Act
target.Remove(3);
// Assert
Assert.IsTrue(wasEventRaised);
}
public void WhenRemove_ThenRaisesCollectionChanged() {
// Arrange
var target = new ObservableHashSet<int>();
target.Add(1);
target.Add(2);
target.Add(3);
target.Add(4);
bool wasEventRaised = false;
target.CollectionChanged += (s, e) => {
if (e.Action == NotifyCollectionChangedAction.Remove && e.OldItems.Contains(3)) {
wasEventRaised = true;
}
};
// Act
target.Remove(3);
// Assert
Assert.IsTrue(wasEventRaised);
}
public void WhenRemove_ThenCountUpdated() {
// Arrange
var target = new ObservableHashSet<int>();
target.Add(1);
target.Add(2);
target.Add(3);
target.Add(4);
// Act
target.Remove(3);
var actual = target.Count;
// Assert
Assert.AreEqual(3, actual);
}
public void DoesSupportObservableHashSet()
{
List <string> expected;
List <int> expectedForked;
ObservableHashSet <int> source1 = new ObservableHashSet <int>();
ObservableHashSet <int> source2 = new ObservableHashSet <int>();
ObservableHashSet <int> source3 = new ObservableHashSet <int>();
List <string> projection1 = new List <string>();
List <string> projection2 = new List <string>();
List <int> projection3 = new List <int>();
Func <int, string> transformation = i => i.ToString();
Func <int, bool> filterPredicate = i => i <= 2;
ListBinding <string> binding = new ListBinding <string>()
.AddSource(source1, convert: transformation, filter: filterPredicate)
.AddSource(source2, convert: transformation, filter: filterPredicate)
.AddSource(source3, convert: transformation, filter: filterPredicate);
source1.Add(0);
source2.Add(1);
source3.Add(2);
source3.Add(3);
source2.Add(4);
binding.AddTarget(projection1);
source1.Add(5);
source2.Add(6);
binding.AddTarget(projection2);
source1.Add(7);
source3.Add(8);
expected = source1.Concat(source2).Concat(source3).Where(filterPredicate).Select(transformation).ToList();
expected.Sort();
Assert.Equal(expected, projection1);
Assert.Equal(expected, projection2);
var bindingForked = binding.Select <int>(item => int.Parse(item));
source2.Remove(4);
source1.Remove(5);
source2.Remove(6);
expected = source1.Concat(source2).Concat(source3).Where(filterPredicate).Select(transformation).ToList();
expected.Sort();
Assert.Equal(expected, projection1);
Assert.Equal(expected, projection2);
source1.Add(4);
source3.Add(5);
source1.Add(6);
expected = source1.Concat(source2).Concat(source3).Where(filterPredicate).Select(transformation).ToList();
expected.Sort();
Assert.Equal(expected, projection1);
Assert.Equal(expected, projection2);
source1.Clear();
expected = source1.Concat(source2).Concat(source3).Where(filterPredicate).Select(transformation).ToList();
expected.Sort();
Assert.Equal(expected, projection1);
Assert.Equal(expected, projection2);
source3.Clear();
source2.Clear();
expected = source1.Concat(source2).Concat(source3).Where(filterPredicate).Select(transformation).ToList();
expected.Sort();
Assert.Equal(expected, projection1);
Assert.Equal(expected, projection2);
expectedForked = source1.Concat(source2).Concat(source3).Where(filterPredicate).ToList();
expectedForked.Sort();
Assert.Equal(expectedForked, projection3);
}
public bool Remove(GameObjectMetadata metadata)
{
return(_collection.Remove(metadata));
}
