public void Contains_ObservableSourceElementAdded_NoUpdateWhenDetached()
{
var update = false;
var coll = new NotifyCollection<int>() { 1, 2, 3 };
var test = Observable.Expression(() => coll.Contains(4));
test.ValueChanged += (o, e) => update = true;
Assert.IsFalse(test.Value);
Assert.IsFalse(update);
test.Detach();
update = false;
coll.Add(4);
Assert.IsFalse(update);
test.Attach();
Assert.IsTrue(update);
Assert.IsTrue(test.Value);
update = false;
coll.Remove(4);
Assert.IsTrue(update);
}
public void Contains_ObservableSourceElementAdded_NoUpdateWhenDetached()
{
var update = false;
var coll = new NotifyCollection <int>()
{
1, 2, 3
};
var test = Observable.Expression(() => coll.Contains(4));
test.ValueChanged += (o, e) => update = true;
Assert.IsFalse(test.Value);
Assert.IsFalse(update);
test.Detach();
update = false;
coll.Add(4);
Assert.IsFalse(update);
test.Attach();
Assert.IsTrue(update);
Assert.IsTrue(test.Value);
update = false;
coll.Remove(4);
Assert.IsTrue(update);
}
public void FirstOrDefault_ObservableSourceFirstItemRemoved_Update()
{
var update = false;
var coll = new NotifyCollection <string>()
{
"42"
};
var collCasted = (INotifyCollection <string>)coll;
var test = Observable.Expression(() => collCasted.FirstOrDefault());
test.ValueChanged += (o, e) =>
{
update = true;
Assert.AreEqual("42", e.OldValue);
Assert.IsNull(e.NewValue);
};
Assert.AreEqual("42", test.Value);
Assert.IsFalse(update);
coll.Remove("42");
Assert.IsTrue(update);
Assert.IsNull(test.Value);
}
public void PredicateFirstOrDefault_ObservableSourceRemoveNewFirstItem_Update()
{
var update = false;
var coll = new NotifyCollection <string>()
{
"1", "42", "23"
};
var collCasted = (INotifyCollection <string>)coll;
var test = Observable.Expression(() => collCasted.FirstOrDefault(s => s.Length > 1));
test.ValueChanged += (o, e) =>
{
update = true;
Assert.AreEqual("42", e.OldValue);
Assert.AreEqual("23", e.NewValue);
};
Assert.AreEqual("42", test.Value);
Assert.IsFalse(update);
coll.Remove("42");
Assert.IsTrue(update);
Assert.AreEqual("23", test.Value);
}
public void PredicateFirstOrDefault_ObservableSourceFirstItemAdded_NoUpdateWhenDetached()
{
var update = false;
var coll = new NotifyCollection <string>()
{
"1"
};
var test = Observable.Expression(() => coll.FirstOrDefault(s => s.Length > 1));
test.ValueChanged += (o, e) => update = true;
Assert.IsNull(test.Value);
Assert.IsFalse(update);
test.Detach();
update = false;
coll.Add("42");
Assert.IsFalse(update);
test.Attach();
Assert.IsTrue(update);
Assert.AreEqual("42", test.Value);
update = false;
coll.Remove("42");
Assert.IsTrue(update);
}
public void LambdaAny_ObservableSource_NoUpdateWhenDetached()
{
var update = false;
var coll = new NotifyCollection <int>()
{
-1, -2
};
var test = Observable.Expression(() => coll.Any(i => i > 0));
test.ValueChanged += (o, e) => update = true;
Assert.IsFalse(test.Value);
Assert.IsFalse(update);
test.Detach();
coll.Add(1);
Assert.IsFalse(update);
test.Attach();
Assert.IsTrue(update);
Assert.IsTrue(test.Value);
update = false;
coll.Remove(1);
Assert.IsTrue(update);
}
public void SetEqualsComparer_ObservableSource1ItemRemovedSoTrue_Update()
{
var update = false;
INotifyCollection <int> source1 = new NotifyCollection <int>()
{
-1, 1, -2, -3, 4
};
INotifyCollection <int> source2 = new NotifyCollection <int>()
{
1, 2, 2, 3
};
var test = Observable.Expression(() => source1.SetEquals(source2, new AbsoluteValueComparer()));
test.ValueChanged += (o, e) =>
{
Assert.IsFalse((bool)e.OldValue);
Assert.IsTrue((bool)e.NewValue);
update = true;
};
Assert.IsFalse(test.Value);
Assert.IsFalse(update);
source1.Remove(4);
Assert.IsTrue(update);
Assert.IsTrue(test.Value);
}
public void SetEquals_ObservableSource2ItemRemovedSoFalse_Update()
{
var update = false;
INotifyCollection <int> source1 = new NotifyCollection <int>()
{
1, 1, 2, 3
};
INotifyCollection <int> source2 = new NotifyCollection <int>()
{
1, 2, 2, 3
};
var test = Observable.Expression(() => source1.SetEquals(source2));
test.ValueChanged += (o, e) =>
{
Assert.IsTrue((bool)e.OldValue);
Assert.IsFalse((bool)e.NewValue);
update = true;
};
Assert.IsTrue(test.Value);
Assert.IsFalse(update);
source2.Remove(3);
Assert.IsTrue(update);
Assert.IsFalse(test.Value);
}
public void OrderByTransaction_ChangeRemove_Update()
{
ExecutionEngine.Current = new SequentialExecutionEngine();
var update = false;
var dummy1 = new ObservableDummy <int>(1);
var dummy2 = new Dummy <int>(3);
var dummy3 = new Dummy <int>(5);
var coll = new NotifyCollection <Dummy <int> >()
{
dummy1, dummy2, dummy3
};
var test = coll.OrderBy(d => d.Item);
test.CollectionChanged += (o, e) => update = true;
test.AssertSequence(dummy1, dummy2, dummy3);
Assert.AreEqual(3, test.Sequences.Count());
Assert.IsFalse(update);
ExecutionEngine.Current.BeginTransaction();
dummy1.Item = 0;
coll.Remove(dummy1);
Assert.IsFalse(update);
ExecutionEngine.Current.CommitTransaction();
test.AssertSequence(dummy2, dummy3);
Assert.AreEqual(2, test.Sequences.Count());
Assert.IsTrue(update);
}
static void Main(string[] args)
{
NotifyCollection nc = new NotifyCollection();
nc.PropertyChanged += (s,e) =>
{
Console.WriteLine(e.PropertyName);
};
nc.Add(1);
nc.Add(2);
nc.Add(3);
nc.Insert(2, 2);
nc.Add(4);
nc.Remove(4);
}
public void GroupBy_ObservableSource_NoUpdatesWhenDetached()
{
var update = false;
ICollection <Dummy <string> > coll = new NotifyCollection <Dummy <string> >();
var test = coll.WithUpdates().GroupBy(d => d.Item);
test.CollectionChanged += (o, e) => update = true;
Assert.IsTrue(!test.Any());
Assert.IsFalse(update);
test.Detach();
update = false;
var testDummy = new ObservableDummy <string>()
{
Item = "42"
};
coll.Add(testDummy);
Assert.IsFalse(update);
testDummy.Item = "23";
Assert.IsFalse(update);
test.Attach();
Assert.IsTrue(update);
Assert.AreEqual("23", test.FirstOrDefault().Key);
update = false;
testDummy.Item = "42";
Assert.IsTrue(update);
update = false;
coll.Remove(testDummy);
Assert.IsTrue(update);
}
public void PredicateFirstOrDefault_ObservableSourceOtherItemRemoved_NoUpdate()
{
var update = false;
var coll = new NotifyCollection <string>()
{
"1", "23", "42"
};
var test = Observable.Expression(() => coll.FirstOrDefault(s => s.Length > 1));
test.ValueChanged += (o, e) => update = true;
Assert.AreEqual("23", test.Value);
Assert.IsFalse(update);
coll.Remove("42");
Assert.IsFalse(update);
}
public void TopX_Remove_CorrectResult()
{
var collection = new NotifyCollection <Dummy <int> >();
var collCasted = (INotifyCollection <Dummy <int> >)collection;
var top1 = new Dummy <int>(43);
var top2 = new Dummy <int>(42);
var top3 = new Dummy <int>(30);
collection.Add(top1);
collection.Add(top2);
collection.Add(top3);
collection.Add(new Dummy <int>(23));
collection.Add(new Dummy <int>(6));
var topEx = Observable.Expression(() => collCasted.TopX(3, d => d.Item));
var top = topEx.Value;
Assert.AreEqual(top1, top[0].Key);
Assert.AreEqual(top2, top[1].Key);
Assert.AreEqual(top3, top[2].Key);
Assert.AreEqual(3, top.Length);
var changed = false;
topEx.ValueChanged += (o, e) =>
{
Assert.IsNotNull(e.OldValue);
Assert.IsNotNull(e.NewValue);
changed = true;
};
collection.RemoveAt(3);
Assert.AreEqual(top, topEx.Value);
Assert.IsFalse(changed);
collection.Remove(top1);
Assert.IsTrue(changed);
Assert.AreEqual(42, topEx.Value[0].Key.Item);
Assert.AreEqual(30, topEx.Value[1].Key.Item);
Assert.AreEqual(6, topEx.Value[2].Key.Item);
}
public void LambdaIntAverage_ObservableSourceItemAdded_NoUpdatesWhenDetached()
{
var update = false;
var coll = new NotifyCollection <Dummy <int> >()
{
new Dummy <int>(1), new Dummy <int>(2), new Dummy <int>(3)
};
var testColl = coll.WithUpdates();
var test = Observable.Expression(() => testColl.Average(d => d.Item));
test.ValueChanged += (o, e) => update = true;
Assert.AreEqual(2, test.Value);
Assert.AreEqual(2, testColl.Average(d => d.Item));
Assert.IsFalse(update);
test.Detach();
var testDummy = new ObservableDummy <int>(5);
coll.Add(testDummy);
Assert.IsFalse(update);
testDummy.Item = 4;
Assert.IsFalse(update);
test.Attach();
Assert.IsTrue(update);
Assert.AreEqual(2.5, test.Value);
update = false;
testDummy.Item = 5;
Assert.IsTrue(update);
update = false;
coll.Remove(testDummy);
}
static void Main ( string[] args )
{
Delegates del = new Delegates();
List<int> numbers = new List<int> { 5 , 4 , 8 , 7 , 9 , 6 , 6 , 6 , 3 , 1 , 20 };
List<int> evens = del.FilterCollection(numbers , IsEven);
foreach(var item in evens)
{
Console.Write(item + " ");
}
Console.WriteLine();
AverageAggregator aggregator = new AverageAggregator();
aggregator.AverageChanged += delegate ( object sender )
{
if(sender is AverageAggregator)
{
AverageAggregator newSender = (AverageAggregator)sender;
Console.WriteLine("Average has changed!\nNew value: {0}" , newSender.Average);
}
};
aggregator.AddNumber(6);
aggregator.AddNumber(4);
aggregator.AddNumber(2);
aggregator.AddNumber(3);
Student stu = new Student();
stu.PropertyChanged += PropChange;
stu.Name = "Anton";
stu.FacultyNumber = 65888;
stu.Grade = 5.58;
NotifyCollection<int> newList = new NotifyCollection<int>();
newList.PropertyChanged += (object sender, PropertyChangedEventArgs e)=>
{
Console.WriteLine("The list has changed!\n{0}" , e.PropertyName);
};
newList.Add(5);
newList.Add(12);
newList.Insert(1 , 20);
newList.Remove(12);
Console.ReadKey();
}
public void GroupBy_ObservableSource_NoUpdatesWhenDetached()
{
var update = false;
ICollection<Dummy<string>> coll = new NotifyCollection<Dummy<string>>();
var test = coll.WithUpdates().GroupBy(d => d.Item);
test.CollectionChanged += (o, e) => update = true;
Assert.IsTrue(!test.Any());
Assert.IsFalse(update);
test.Detach();
update = false;
var testDummy = new ObservableDummy<string>() { Item = "42" };
coll.Add(testDummy);
Assert.IsFalse(update);
testDummy.Item = "23";
Assert.IsFalse(update);
test.Attach();
Assert.IsTrue(update);
Assert.AreEqual("23", test.FirstOrDefault().Key);
update = false;
testDummy.Item = "42";
Assert.IsTrue(update);
update = false;
coll.Remove(testDummy);
Assert.IsTrue(update);
}
public void LambdaIntAverage_ObservableSourceItemAdded_NoUpdatesWhenDetached()
{
var update = false;
var coll = new NotifyCollection<Dummy<int>>() { new Dummy<int>(1), new Dummy<int>(2), new Dummy<int>(3) };
var testColl = coll.WithUpdates();
var test = Observable.Expression(() => testColl.Average(d => d.Item));
test.ValueChanged += (o, e) => update = true;
Assert.AreEqual(2, test.Value);
Assert.AreEqual(2, testColl.Average(d => d.Item));
Assert.IsFalse(update);
test.Detach();
var testDummy = new ObservableDummy<int>(5);
coll.Add(testDummy);
Assert.IsFalse(update);
testDummy.Item = 4;
Assert.IsFalse(update);
test.Attach();
Assert.IsTrue(update);
Assert.AreEqual(2.5, test.Value);
update = false;
testDummy.Item = 5;
Assert.IsTrue(update);
update = false;
coll.Remove(testDummy);
}
public void SetEqualsComparer_ObservableSource2ItemRemoved_NoUpdate()
{
var update = false;
INotifyCollection <int> source1 = new NotifyCollection <int>()
{
-1, 1, -2, -3
};
INotifyCollection <int> source2 = new NotifyCollection <int>()
{
1, 2, 2, 3
};
var test = Observable.Expression(() => source1.SetEquals(source2, new AbsoluteValueComparer()));
test.ValueChanged += (o, e) => update = true;
Assert.IsTrue(test.Value);
Assert.IsTrue(source1.SetEquals(source2, new AbsoluteValueComparer()));
Assert.IsFalse(update);
source2.Remove(2);
Assert.IsFalse(update);
}
public void SetEquals_ObservableSource1ItemRemoved_NoUpdate()
{
var update = false;
INotifyCollection <int> source1 = new NotifyCollection <int>()
{
1, 1, 2, 3
};
INotifyCollection <int> source2 = new NotifyCollection <int>()
{
1, 2, 2, 3
};
var test = Observable.Expression(() => source1.SetEquals(source2));
test.ValueChanged += (o, e) => update = true;
Assert.IsTrue(test.Value);
Assert.IsTrue(source1.SetEquals(source2));
Assert.IsFalse(update);
source1.Remove(1);
Assert.IsFalse(update);
}
public void SetEqualsComparer_ObservableSource2ItemRemovedSoTrue_Update()
{
var update = false;
var source1 = new NotifyCollection<int>() { -1, 1, -2, -3 };
var source2 = new NotifyCollection<int>() { 1, 2, -2, 3, 4 };
var test = Observable.Expression(() => source1.SetEquals(source2, new AbsoluteValueComparer()));
test.ValueChanged += (o, e) =>
{
Assert.IsFalse((bool)e.OldValue);
Assert.IsTrue((bool)e.NewValue);
update = true;
};
Assert.IsFalse(test.Value);
Assert.IsFalse(update);
source2.Remove(4);
Assert.IsTrue(update);
Assert.IsTrue(test.Value);
}
public void SetEquals_ObservableSource2ItemRemovedSoFalse_Update()
{
var update = false;
var source1 = new NotifyCollection<int>() { 1, 1, 2, 3 };
var source2 = new NotifyCollection<int>() { 1, 2, 2, 3 };
var test = Observable.Expression(() => source1.SetEquals(source2));
test.ValueChanged += (o, e) =>
{
Assert.IsTrue((bool)e.OldValue);
Assert.IsFalse((bool)e.NewValue);
update = true;
};
Assert.IsTrue(test.Value);
Assert.IsFalse(update);
source2.Remove(3);
Assert.IsTrue(update);
Assert.IsFalse(test.Value);
}
public void LambdaAny_ObservableSource_NoUpdateWhenDetached()
{
var update = false;
var coll = new NotifyCollection<int>() { -1, -2 };
var test = Observable.Expression(() => coll.Any(i => i > 0));
test.ValueChanged += (o, e) => update = true;
Assert.IsFalse(test.Value);
Assert.IsFalse(update);
test.Detach();
coll.Add(1);
Assert.IsFalse(update);
test.Attach();
Assert.IsTrue(update);
Assert.IsTrue(test.Value);
update = false;
coll.Remove(1);
Assert.IsTrue(update);
}
static void Main(string[] args)
{
Console.InputEncoding = Encoding.Unicode;
Console.OutputEncoding = Encoding.Unicode;
AverageAggregator averageAgg = new AverageAggregator
(delegate (object sender, decimal oldAverage, decimal newAverage)
{
Console.Write("--->Handler: ");
Console.WriteLine("Average changed from {0} to {1}.", oldAverage, newAverage);
});
Console.WriteLine("---AverageAggregator---");
Console.WriteLine();
Console.WriteLine("Adding number to aggregator: 2");
averageAgg.AddNumber(2);
Console.WriteLine("Adding number to aggregator: 2");
averageAgg.AddNumber(2);
Console.WriteLine("Adding number to aggregator: 8");
averageAgg.AddNumber(8);
Console.WriteLine("Adding number to aggregator: 4");
averageAgg.AddNumber(4);
Console.WriteLine("Adding number to aggregator: 4");
averageAgg.AddNumber(4);
Console.WriteLine("Adding number to aggregator: 4");
averageAgg.AddNumber(4);
Console.WriteLine("Adding number to aggregator: -24");
averageAgg.AddNumber(-24);
Console.WriteLine("Adding number to aggregator: 0");
averageAgg.AddNumber(0);
Console.WriteLine("Adding number to aggregator: 0");
averageAgg.AddNumber(0);
Console.WriteLine("Adding number to aggregator: 10");
averageAgg.AddNumber(10);
Console.WriteLine("Adding number to aggregator: 1");
averageAgg.AddNumber(1);
Console.WriteLine("Adding number to aggregator: 1");
averageAgg.AddNumber(1);
Console.WriteLine("Adding number to aggregator: 2");
averageAgg.AddNumber(2);
Console.WriteLine();
Console.WriteLine("---NotifyCollection---");
Console.WriteLine();
NotifyCollection<Book> notCol = new NotifyCollection<Book>
((sender, changeType, changedItemIndex, changedItemInfo) =>
{
Console.Write("--->Handler: ");
switch (changeType)
{
case ItemChangeType.Add:
Console.WriteLine("Added item to collection on {0} index!", changedItemIndex);
break;
case ItemChangeType.Insert:
Console.WriteLine("Inserted item in collection on {0} index!", changedItemIndex);
break;
case ItemChangeType.Remove:
if (changedItemIndex == -1) Console.WriteLine("Collection items cleared!");
else Console.WriteLine("Removed item from collection being on {0} index!", changedItemIndex);
break;
case ItemChangeType.Replace:
Console.WriteLine("Replaced item in collection being on {0} index!", changedItemIndex);
break;
case ItemChangeType.ChangedProperty:
Console.WriteLine("Item on {0} index property {1} changed!", changedItemIndex, changedItemInfo);
break;
default:
break;
}
});
Book book1 = new Book("author1", "book1", 2000);
Book book2 = new Book("author2", "book2", 2001);
Book book3 = new Book("author3", "book3", 2002);
Console.WriteLine("Adding {0}!", book1);
notCol.Add(book1);
Console.WriteLine("Adding {0}!", book2);
notCol.Add(book2);
Console.WriteLine("Inserting {0} on index 1!", book3);
notCol.Insert(1, book3);
Console.WriteLine("Changing {0} year to 2011!", book1);
book1.Year = 2011;
Console.WriteLine("Changing {0} year to 2005!", book3);
book3.Year = 2005;
Console.WriteLine("Removing {0}!", book2);
notCol.Remove(book2);
Console.WriteLine("Changing removed book year to 1995!");
book2.Year = 1995;
Console.WriteLine("Clearing all items!");
notCol.Clear();
Console.WriteLine("Adding {0}!", book1);
notCol.Add(book1);
Console.WriteLine("Adding {0}!", book2);
notCol.Add(book2);
Console.WriteLine("Replacing book on 0 index with {0}", book3);
notCol[0] = book3;
Console.WriteLine("Changing old book year to 1895!");
book1.Year = 1895;
Console.WriteLine("Changing new book year to 2003!");
book3.Year = 2003;
Console.WriteLine();
Console.WriteLine("---Network Buffer---");
ReceiveBuffer rec = new ReceiveBuffer(MessageReceivedHandle);
PacketGenerator pg = new PacketGenerator(rec);
Console.WriteLine("Write messages. Write exit for exit.");
Console.Write("Message to send: ");
string inputMessage = Console.ReadLine();
while(!inputMessage.Equals("exit"))
{
pg.SendMessage(inputMessage);
Console.Write("Message to send: ");
inputMessage = Console.ReadLine();
}
}
public void PredicateFirstOrDefault_ObservableSourceFirstItemAdded_NoUpdateWhenDetached()
{
var update = false;
var coll = new NotifyCollection<string>() { "1" };
var test = Observable.Expression(() => coll.FirstOrDefault(s => s.Length > 1));
test.ValueChanged += (o, e) => update = true;
Assert.IsNull(test.Value);
Assert.IsFalse(update);
test.Detach();
update = false;
coll.Add("42");
Assert.IsFalse(update);
test.Attach();
Assert.IsTrue(update);
Assert.AreEqual("42", test.Value);
update = false;
coll.Remove("42");
Assert.IsTrue(update);
}
public void PredicateFirstOrDefault_ObservableSourceOtherItemRemoved_NoUpdate()
{
var update = false;
var coll = new NotifyCollection<string>() { "1", "23", "42" };
var test = Observable.Expression(() => coll.FirstOrDefault(s => s.Length > 1));
test.ValueChanged += (o, e) => update = true;
Assert.AreEqual("23", test.Value);
Assert.IsFalse(update);
coll.Remove("42");
Assert.IsFalse(update);
}
public void FirstOrDefault_ObservableSourceRemoveNewFirstItem_Update()
{
var update = false;
var coll = new NotifyCollection<string>() { "42", "23" };
var test = Observable.Expression(() => coll.FirstOrDefault());
test.ValueChanged += (o, e) =>
{
update = true;
Assert.AreEqual("42", e.OldValue);
Assert.AreEqual("23", e.NewValue);
};
Assert.AreEqual("42", test.Value);
Assert.IsFalse(update);
coll.Remove("42");
Assert.IsTrue(update);
Assert.AreEqual("23", test.Value);
}
public void SetEqualsComparer_ObservableSource1ItemRemoved_NoUpdate()
{
var update = false;
var source1 = new NotifyCollection<int>() { -1, 1, -2, -3 };
var source2 = new NotifyCollection<int>() { 1, 2, 2, 3 };
var test = Observable.Expression(() => source1.SetEquals(source2, new AbsoluteValueComparer()));
test.ValueChanged += (o, e) => update = true;
Assert.IsTrue(test.Value);
Assert.IsTrue(source1.SetEquals(source2, new AbsoluteValueComparer()));
Assert.IsFalse(update);
source1.Remove(1);
Assert.IsFalse(update);
}
