public async Task ShouldRaisePropertyChangedEvent()
{
// Arrange
TestObservableObject obj = TestObservableObjectFaker.Create().Generate();
var collection = new ObservableItemCollection <TestObservableObject> {
obj
};
var tcs = new TaskCompletionSource <ObservableItemCollectionPropertyChangedEventArgs>();
collection.ItemPropertyChanged += (sender, args) =>
{
tcs.SetResult(args);
};
// Act
obj.Name = "Hello, World!";
// Assert
ObservableItemCollectionPropertyChangedEventArgs result = await tcs.Task;
result.ShouldNotBeNull();
result.Sender.ShouldBe(obj);
result.EventArgs.ShouldNotBeNull();
result.EventArgs.PropertyName.ShouldBe(nameof(TestObservableObject.Name));
}
public async Task ShouldRaiseCollectionChangedEventForRemoveRange()
{
// Arrange
List <TestObservableObject> objectsToRemove = TestObservableObjectFaker.Create().Generate(10);
var collection = new ObservableItemCollection <TestObservableObject>();
var tcs = new TaskCompletionSource <NotifyCollectionChangedEventArgs>();
collection.CollectionChanged += (sender, args) =>
{
tcs.SetResult(args);
};
// Act
collection.RemoveRange(objectsToRemove);
// Assert
NotifyCollectionChangedEventArgs collectionChanged = await tcs.Task;
collectionChanged.ShouldNotBeNull();
collectionChanged.OldItems.Count.ShouldBe(objectsToRemove.Count);
foreach (object item in collectionChanged.OldItems)
{
objectsToRemove.ShouldContain(item);
}
}
public void ShouldContainItemsIfInitializedAsList()
{
// Arrange
List <TestObservableObject> objects = TestObservableObjectFaker.Create().Generate(10);
// Act
var collection = new ObservableItemCollection <TestObservableObject>(objects);
// Assert
collection.Count.ShouldBe(objects.Count());
collection.ShouldBeEquivalentTo(objects);
}
public void ShouldAddSingleItem()
{
// Arrange
TestObservableObject objectToAdd = TestObservableObjectFaker.Create().Generate();
// Act
var collection = new ObservableItemCollection <TestObservableObject> {
objectToAdd
};
// Assert
collection.ShouldContain(objectToAdd);
}
public void ShouldRemoveSingleItem()
{
// Arrange
TestObservableObject objectToRemove = TestObservableObjectFaker.Create().Generate();
var collection = new ObservableItemCollection <TestObservableObject> {
objectToRemove
};
// Act
collection.Remove(objectToRemove);
// Assert
collection.ShouldNotContain(objectToRemove);
}
public void ShouldAddRangeOfItems()
{
// Arrange
List <TestObservableObject> objectsToAdd = TestObservableObjectFaker.Create().Generate(10);
var collection = new ObservableItemCollection <TestObservableObject>();
// Act
collection.AddRange(objectsToAdd);
// Assert
foreach (TestObservableObject item in objectsToAdd)
{
collection.ShouldContain(item);
}
}
public void ShouldRemoveRangeOfItems()
{
// Arrange
List <TestObservableObject> items = TestObservableObjectFaker.Create().Generate(10);
var itemsToRemove = items.Take(5).ToList();
var collection = new ObservableItemCollection <TestObservableObject>(items);
// Act
collection.RemoveRange(itemsToRemove);
// Assert
foreach (TestObservableObject item in itemsToRemove)
{
collection.ShouldNotContain(item);
}
}
public async Task ShouldRaiseCollectionChangedEventForAdd()
{
// Arrange
TestObservableObject objectToAdd = TestObservableObjectFaker.Create().Generate();
var collection = new ObservableItemCollection <TestObservableObject>();
var tcs = new TaskCompletionSource <NotifyCollectionChangedEventArgs>();
collection.CollectionChanged += (sender, args) =>
{
tcs.SetResult(args);
};
// Act
collection.Add(objectToAdd);
// Assert
NotifyCollectionChangedEventArgs collectionChanged = await tcs.Task;
collectionChanged.ShouldNotBeNull();
collectionChanged.NewItems.Contains(objectToAdd).ShouldBeTrue();
}