public void SuspendsValidationWhileAddingAndRemovingItems()
{
int counter = 0;
var fastCollection = new FastBindingList <int>();
fastCollection.AutomaticallyDispatchChangeNotifications = false;
fastCollection.ListChanged += (sender, e) => counter++;
using (fastCollection.SuspendChangeNotifications())
{
fastCollection.Add(1);
fastCollection.Add(2);
fastCollection.Add(3);
fastCollection.Add(4);
fastCollection.Add(5);
fastCollection.Remove(5);
fastCollection.Remove(4);
fastCollection.Remove(3);
fastCollection.Remove(2);
fastCollection.Remove(1);
}
Assert.AreEqual(0, counter);
}
public void RaisesTwoEvents()
{
var eventArgsList = new List <NotifyRangedListChangedEventArgs>();
var fastCollection = new FastBindingList <int>
{
AutomaticallyDispatchChangeNotifications = false
};
fastCollection.AddItems(new[] { 1, 2, 3, 4 });
fastCollection.ListChanged += (sender, args) =>
{
eventArgsList.Add(args as NotifyRangedListChangedEventArgs);
};
using (fastCollection.SuspendChangeNotifications())
{
fastCollection.RemoveItems(new[] { 4 });
fastCollection.AddItems(new[] { 5 });
}
Assert.AreEqual(2, eventArgsList.Count);
Assert.Contains(5, eventArgsList.First(args => args.Action == NotifyRangedListChangedAction.Add).NewItems);
Assert.Contains(4, eventArgsList.First(args => args.Action == NotifyRangedListChangedAction.Remove).OldItems);
}
public void ListIsSortedDescendingAfterSortDescendingByStringField()
{
var pdc = TypeDescriptor.GetProperties(typeof(TestModel));
var desc = pdc.Find("TestStringProperty", false);
var fastCollection = new FastBindingList <TestModel>();
var tm0 = new TestModel()
{
TestIntProperty = 1, TestStringProperty = "Test1", TestTypeProperty = null
};
var tm1 = new TestModel()
{
TestIntProperty = 2, TestStringProperty = "Test2", TestTypeProperty = null
};
var tm2 = new TestModel()
{
TestIntProperty = 3, TestStringProperty = "Test3", TestTypeProperty = null
};
var tmn = new TestModel()
{
TestIntProperty = 4, TestStringProperty = null, TestTypeProperty = null
};
fastCollection.AutomaticallyDispatchChangeNotifications = false;
fastCollection.Add(tm0);
fastCollection.Add(tm1);
fastCollection.Add(tmn);
fastCollection.Add(tm2);
((IBindingList)fastCollection).ApplySort(desc, ListSortDirection.Descending);
CollectionAssert.AreEqual(new List <TestModel> {
tm2, tm1, tm0, tmn
}, fastCollection);
}
public void ReturnsItemIndexWhenItemWasFound()
{
var pdc = TypeDescriptor.GetProperties(typeof(TestModel));
var desc = pdc.Find("TestProperty", false);
var fastCollection = new FastBindingList <TestModel>
{
AutomaticallyDispatchChangeNotifications = false
};
fastCollection.Add(new TestModel()
{
TestProperty = "Test1"
});
fastCollection.Add(new TestModel()
{
TestProperty = "Test2"
});
fastCollection.Add(new TestModel()
{
TestProperty = "Test3"
});
var idx0 = ((IBindingList)fastCollection).Find(desc, "Test1");
var idx1 = ((IBindingList)fastCollection).Find(desc, "Test2");
var idx2 = ((IBindingList)fastCollection).Find(desc, "Test3");
Assert.AreEqual(0, idx0);
Assert.AreEqual(1, idx1);
Assert.AreEqual(2, idx2);
}
public void RemovingItemsInRemovingMode()
{
var counter = 0;
var eventArgs = (NotifyRangedListChangedEventArgs)null;
var fastCollection = new FastBindingList <int> {
1, 2, 3, 4, 5
};
fastCollection.AutomaticallyDispatchChangeNotifications = false;
fastCollection.ListChanged += (sender, e) =>
{
counter++;
eventArgs = e as NotifyRangedListChangedEventArgs;
};
using (fastCollection.SuspendChangeNotifications(SuspensionMode.Removing))
{
fastCollection.Remove(1);
fastCollection.Remove(2);
fastCollection.Remove(3);
fastCollection.Remove(4);
fastCollection.Remove(5);
}
Assert.AreEqual(1, counter);
Assert.AreEqual(ListChangedType.Reset, eventArgs.ListChangedType);
Assert.AreEqual(NotifyRangedListChangedAction.Remove, eventArgs.Action);
CollectionAssert.AreEqual(eventArgs.OldItems, new[] { 1, 2, 3, 4, 5 });
}
public void RaisesSingleRemoveEventIfTheAddedItemsAreASubSetOfTheRemovedItems()
{
var count = 0;
NotifyRangedListChangedEventArgs eventArgs = null;
var fastCollection = new FastBindingList <int>
{
AutomaticallyDispatchChangeNotifications = false
};
fastCollection.AddItems(new[] { 1, 2, 3, 4 });
fastCollection.ListChanged += (sender, args) =>
{
count++;
eventArgs = args as NotifyRangedListChangedEventArgs;
};
using (fastCollection.SuspendChangeNotifications())
{
fastCollection.RemoveItems(new[] { 4, 2, 3 });
fastCollection.AddItems(new[] { 2 });
}
Assert.AreEqual(NotifyRangedListChangedAction.Remove, eventArgs.Action);
Assert.AreEqual(1, count);
Assert.AreEqual(new[] { 4, 3 }, eventArgs.OldItems.OfType <int>().ToArray());
}
public void CascadedAddingItemsInAddingMode()
{
var counter = 0;
var eventArgs = (NotifyRangedListChangedEventArgs)null;
var fastCollection = new FastBindingList <int>();
fastCollection.AutomaticallyDispatchChangeNotifications = false;
fastCollection.ListChanged += (sender, e) =>
{
counter++;
eventArgs = e as NotifyRangedListChangedEventArgs;
};
var firstToken = fastCollection.SuspendChangeNotifications(SuspensionMode.Adding);
var secondToken = fastCollection.SuspendChangeNotifications(SuspensionMode.Adding);
fastCollection.Add(1);
fastCollection.Add(2);
fastCollection.Add(3);
fastCollection.Add(4);
fastCollection.Add(5);
secondToken.Dispose();
Assert.AreEqual(0, counter);
Assert.IsNull(eventArgs);
firstToken.Dispose();
Assert.AreEqual(1, counter);
// ReSharper disable PossibleNullReferenceException
Assert.AreEqual(ListChangedType.Reset, eventArgs.ListChangedType);
Assert.AreEqual(NotifyRangedListChangedAction.Add, eventArgs.Action);
CollectionAssert.AreEqual(eventArgs.NewItems, new[] { 1, 2, 3, 4, 5 });
// ReSharper restore PossibleNullReferenceException
}
public void RaisesResetEventWhileSorting()
{
var pdc = TypeDescriptor.GetProperties(typeof(TestModel));
var desc = pdc.Find("TestStringProperty", false);
var counter = 0;
var eventArgs = (NotifyListChangedEventArgs)null;
var fastCollection = new FastBindingList <TestModel>();
fastCollection.AutomaticallyDispatchChangeNotifications = false;
fastCollection.Add(new TestModel()
{
TestIntProperty = 1, TestStringProperty = "Test1"
});
fastCollection.Add(new TestModel()
{
TestIntProperty = 2, TestStringProperty = "Test2"
});
fastCollection.Add(new TestModel()
{
TestIntProperty = 3, TestStringProperty = "Test3"
});
fastCollection.ListChanged += (sender, e) =>
{
counter++;
eventArgs = e as NotifyListChangedEventArgs;
};
((IBindingList)fastCollection).ApplySort(desc, ListSortDirection.Ascending);
Assert.AreEqual(1, counter);
Assert.AreEqual(ListChangedType.Reset, eventArgs.ListChangedType);
}
public void ReturnsMinusOneWhenItemWasNotFound()
{
var pdc = TypeDescriptor.GetProperties(typeof(TestModel));
var desc = pdc.Find("TestProperty", false);
var fastCollection = new FastBindingList <TestModel>();
fastCollection.AutomaticallyDispatchChangeNotifications = false;
fastCollection.Add(new TestModel()
{
TestProperty = "Test1"
});
fastCollection.Add(new TestModel()
{
TestProperty = "Test2"
});
fastCollection.Add(new TestModel()
{
TestProperty = "Test3"
});
var idxnf = ((IBindingList)fastCollection).Find(desc, "Test4");
Assert.AreEqual(-1, idxnf);
}
public void ThrowsArgumentNullExceptionForNullCollection()
{
var fastCollection = new FastBindingList <int>();
fastCollection.AutomaticallyDispatchChangeNotifications = false;
ExceptionTester.CallMethodAndExpectException <ArgumentNullException>(() => fastCollection.AddItems(null));
}
public void CallingResetWhileAddingItemsInAddingMode()
{
var counter = 0;
var eventArgs = (NotifyRangedListChangedEventArgs)null;
var fastCollection = new FastBindingList <int>();
fastCollection.AutomaticallyDispatchChangeNotifications = false;
fastCollection.ListChanged += (sender, e) =>
{
counter++;
eventArgs = e as NotifyRangedListChangedEventArgs;
};
var token = fastCollection.SuspendChangeNotifications(SuspensionMode.Adding);
fastCollection.Add(1);
fastCollection.Add(2);
fastCollection.Reset();
Assert.AreEqual(0, counter);
fastCollection.Add(3);
fastCollection.Add(4);
fastCollection.Add(5);
token.Dispose();
Assert.AreEqual(1, counter);
Assert.AreEqual(ListChangedType.Reset, eventArgs.ListChangedType);
Assert.AreEqual(NotifyRangedListChangedAction.Add, eventArgs.Action);
CollectionAssert.AreEqual(eventArgs.NewItems, new[] { 1, 2, 3, 4, 5 });
}
private SuspensionContext <T> GetSuspensionContext <T>(FastBindingList <T> collection)
{
var t = typeof(FastBindingList <T>);
var f = t.GetFieldEx("_suspensionContext", BindingFlags.Instance | BindingFlags.NonPublic);
var v = f.GetValue(collection) as SuspensionContext <T>;
return(v);
}
public void ThrowsInvalidOperationExceptionForClearingInAddingMode()
{
var fastCollection = new FastBindingList <int>();
using (fastCollection.SuspendChangeNotifications(SuspensionMode.Adding))
{
Assert.Throws <InvalidOperationException>(() => fastCollection.Clear());
}
}
public void Find()
{
var coll = new FastBindingList <KeyValuePair <int, string> > {
new KeyValuePair <int, string>(1, "1"), new KeyValuePair <int, string>(2, "2")
};
Throws <ArgumentException>(() => coll.Find("X", null), "No property descriptor found for property name 'X' in type 'System.Collections.Generic.KeyValuePair`2[System.Int32,System.String]'.");
Assert.AreEqual(-1, coll.Find(nameof(KeyValuePair <_, _> .Key), 0));
Assert.AreEqual(0, coll.Find(nameof(KeyValuePair <_, _> .Key), 1));
}
public void ReturnsTrueWhenChangesAreSuspended()
{
var fastCollection = new FastBindingList <int>();
using (fastCollection.SuspendChangeNotifications())
{
Assert.IsTrue(fastCollection.IsDirty);
}
Assert.IsFalse(fastCollection.IsDirty);
}
public void ThrowsInvalidOperationExceptionForChangingMode()
{
var fastCollection = new FastBindingList <int> {
0
};
using (fastCollection.SuspendChangeNotifications(SuspensionMode.Adding))
{
Assert.Throws <InvalidOperationException>(() => { using (fastCollection.SuspendChangeNotifications(SuspensionMode.Removing)) { } });
}
}
public void CleanedUpSuspensionContextAfterDoingNothing()
{
var fastCollection = new FastBindingList <int>();
using (fastCollection.SuspendChangeNotifications(SuspensionMode.Adding))
{
}
var context = GetSuspensionContext(fastCollection);
Assert.IsNull(context);
}
public void ReturnsFalseAfterChangedDisposing()
{
var fastCollection = new FastBindingList <int>();
var firstToken = fastCollection.SuspendChangeNotifications();
var secondToken = fastCollection.SuspendChangeNotifications();
firstToken.Dispose();
secondToken.Dispose();
Assert.IsFalse(fastCollection.NotificationsSuspended);
}
public void ReturnsFalseAfterDisposing()
{
var fastCollection = new FastBindingList <int>();
using (fastCollection.SuspendChangeNotifications())
{
fastCollection.Add(1);
Assert.IsTrue(fastCollection.NotificationsSuspended);
}
Assert.IsFalse(fastCollection.NotificationsSuspended);
}
public void ReturnsSingleElementUsingLinq()
{
var fastCollection = new FastBindingList <int>();
for (int i = 0; i < 43; i++)
{
fastCollection.Add(i);
}
var allInts = (from x in fastCollection
where x == 42
select x).FirstOrDefault();
Assert.AreEqual(42, allInts);
}
public void ResetWithoutSuspendChangeNotifications()
{
var collectionChanged = false;
var fastCollection = new FastBindingList <int>();
fastCollection.AutomaticallyDispatchChangeNotifications = false;
fastCollection.ListChanged += (sender, e) =>
{
collectionChanged = true;
};
fastCollection.Reset();
Assert.AreEqual(true, collectionChanged);
}
public void RaisesSingleEventWhileAddingRange()
{
int counter = 0;
var fastCollection = new FastBindingList <int>();
fastCollection.AutomaticallyDispatchChangeNotifications = false;
fastCollection.ListChanged += (sender, e) => counter++;
fastCollection.AddItems(new[] { 1, 2, 3, 4, 5 });
Assert.AreEqual(1, counter);
fastCollection.AddItems(new ArrayList(new[] { 1, 2, 3, 4, 5 }));
Assert.AreEqual(2, counter);
}
public void ReturnsFalseWhenChangesAreNotSuspended()
{
var fastCollection = new FastBindingList <int>();
Assert.IsFalse(fastCollection.IsDirty);
}