public void RemoveWhereConcurrent() {
var names = new ObservableHashSet<string>(_names);
names.CollectionChanged += (sender, args) => Console.WriteLine(args.Action);
for (int i = names.Count; i > 0; i--) {
int length = i;
var task = Task.Factory.StartNew(() => {
names.Add("Bob");
names.RemoveWhere(n => n.Equals("Bob"));
});
names.RemoveWhere(n => n.Length > length);
task.WaitWithPumping();
}
Assert.AreEqual(0, names.Count);
}
public void RemoveWhereConcurrent()
{
var names = new ObservableHashSet <string>(_names);
names.CollectionChanged += (sender, args) => Console.WriteLine(args.Action);
for (int i = names.Count; i > 0; i--)
{
int length = i;
var task = Task.Factory.StartNew(() => {
names.Add("Bob");
names.RemoveWhere(n => n.Equals("Bob"));
});
names.RemoveWhere(n => n.Length > length);
task.WaitWithPumping();
}
Assert.AreEqual(0, names.Count);
}
public void RemoveWhere() {
var names = new ObservableHashSet<string>(_names);
names.CollectionChanged += (sender, args) => Console.WriteLine(args.Action);
for (int i = names.Count; i > 0; i--) {
int length = i;
names.RemoveWhere(n => n.Length > length);
}
Assert.AreEqual(0, names.Count);
}
public void RemoveWhere()
{
var names = new ObservableHashSet <string>(_names);
names.CollectionChanged += (sender, args) => Console.WriteLine(args.Action);
for (int i = names.Count; i > 0; i--)
{
int length = i;
names.RemoveWhere(n => n.Length > length);
}
Assert.AreEqual(0, names.Count);
}
public void Can_remove_with_predicate()
{
var hashSet = new ObservableHashSet <string> {
"Brendan", "Carmack", "Nate", "Palmer"
};
var countChanging = 0;
var countChanged = 0;
var collectionChanged = 0;
var currentCount = 4;
var countChange = -2;
var removing = new[] { "Carmack", "Palmer" };
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.Replace, a.Action);
Assert.Equal(removing, a.OldItems.OfType <string>().OrderBy(i => i));
Assert.Empty(a.NewItems);
collectionChanged++;
};
Assert.Equal(2, hashSet.RemoveWhere(i => i.Contains("m")));
Assert.Equal(1, countChanging);
Assert.Equal(1, countChanged);
Assert.Equal(1, collectionChanged);
Assert.Equal(new[] { "Brendan", "Nate" }, hashSet.OrderBy(i => i));
Assert.Equal(0, hashSet.RemoveWhere(i => i.Contains("m")));
Assert.Equal(1, countChanging);
Assert.Equal(1, countChanged);
Assert.Equal(1, collectionChanged);
Assert.Equal(new[] { "Brendan", "Nate" }, hashSet.OrderBy(i => i));
}