public void CurrentAddItemTest()
{
// verify that the property is null when we are not adding
Assert.IsNull(CollectionView.CurrentAddItem);
// add a new item and verify that the property is set
object newItem = CollectionView.AddNew();
Assert.AreEqual(newItem, CollectionView.CurrentAddItem);
// verify that once we are done adding, the property will revert to null
CollectionView.CancelNew();
Assert.IsNull(CollectionView.CurrentAddItem);
}
public void AddNewOnFilteredCollection()
{
// add a filter to the collection
CollectionView.Filter = FilterOutOnes;
// now add an item and verify that it is added as the last item
object addItem = CollectionView.AddNew();
Assert.AreEqual(CollectionView.Count - 1, CollectionView.IndexOf(addItem));
CollectionView.CancelNew();
// verify that this holds for paging as well
CollectionView.PageSize = 10;
addItem = CollectionView.AddNew();
Assert.AreEqual(CollectionView.Count - 1, CollectionView.IndexOf(addItem));
}
public void CancelNewTest()
{
// assert that the count is updated when we add a new item
// and that the item is within the view.
Assert.AreEqual(25, CollectionView.Count);
TestClass addItem = CollectionView.AddNew() as TestClass;
Assert.AreEqual(26, CollectionView.Count);
Assert.IsTrue(CollectionView.IndexOf(addItem) >= 0);
// now verify that when we cancel teh add, the item no longer
// appears in the view and the count is decremented.
CollectionView.CancelNew();
Assert.AreEqual(25, CollectionView.Count);
Assert.IsFalse(CollectionView.IndexOf(addItem) >= 0);
}
public void IEditableObject()
{
// we only want to run this test for items that implement IEditableObject
// and where the source collection won't handle the editing first
EditableTestClass editItem = CollectionView[0] as EditableTestClass;
if (editItem == null)
{
return;
}
// check that the debug string has not been set
Assert.IsNull(editItem.DebugString);
// verify that BeginEdit was called on the IEditable interface
CollectionView.EditItem(editItem);
Assert.AreEqual("BeginEdit", editItem.DebugString);
// verify that CancelEdit was called on the IEditable interface
CollectionView.CancelEdit();
Assert.AreEqual("CancelEdit", editItem.DebugString);
// verify that EndEdit was called on the IEditable interface
CollectionView.EditItem(editItem);
CollectionView.CommitEdit();
Assert.AreEqual("EndEdit", editItem.DebugString);
// if we don't implement IList, we cannot run the rest of
// the test as we cannot add/remove items
if (this.ImplementsIList)
{
// verify that when adding a new item, it will call BeginEdit on it
editItem = CollectionView.AddNew() as EditableTestClass;
Assert.AreEqual("BeginEdit", editItem.DebugString);
// verify that when canceling the new item, it will call CancelEdit on it.
CollectionView.CancelNew();
Assert.AreEqual("CancelEdit", editItem.DebugString);
// verify that when committing a new item, it will call EndEdit on it.
editItem = CollectionView.AddNew() as EditableTestClass;
CollectionView.CommitNew();
Assert.AreEqual("EndEdit", editItem.DebugString);
}
}
public void IsAddingNewTest()
{
// verify that the property is false when we are not adding
Assert.IsFalse(CollectionView.IsAddingNew);
// add a new item and verify that the property is set
CollectionView.AddNew();
Assert.IsTrue(CollectionView.IsAddingNew);
// verify that once we are cancel adding, the property will revert to false
CollectionView.CancelNew();
Assert.IsFalse(CollectionView.IsAddingNew);
// add an item again
CollectionView.AddNew();
Assert.IsTrue(CollectionView.IsAddingNew);
// verify that once we are commit the add, the property will revert to false
CollectionView.CommitNew();
Assert.IsFalse(CollectionView.IsAddingNew);
}
public void AddNewTest()
{
// verify the the count gets updated when we add items
Assert.AreEqual(25, CollectionView.Count);
CollectionView.AddNew();
Assert.AreEqual(26, CollectionView.Count);
CollectionView.CommitNew();
Assert.AreEqual(26, CollectionView.Count);
// verify that we can call an AddNew, when there is already
// an add in progress (it will commit the previous add and
// start a new add).
object addItem = CollectionView.AddNew();
CollectionView.AddNew();
Assert.AreNotEqual(addItem, CollectionView.CurrentAddItem);
CollectionView.CommitNew();
Assert.AreEqual(28, CollectionView.Count);
// also the same applies for when we edit items. by calling
// AddNew, we will commit the edit and start a new add operation
CollectionView.EditItem(CollectionView[0]);
Assert.IsTrue(CollectionView.IsEditingItem);
addItem = CollectionView.AddNew();
Assert.IsFalse(CollectionView.IsEditingItem);
Assert.AreEqual(addItem, CollectionView.CurrentAddItem);
CollectionView.CancelNew();
// verify that AddNew succeeds even on empty collections that
// implement IEnumerable<T>
Assert.IsTrue(CollectionView.CanRemove);
while (CollectionView.Count > 0)
{
CollectionView.RemoveAt(0);
}
addItem = CollectionView.AddNew();
Assert.IsNotNull(addItem);
CollectionView.CancelNew();
}
public void CannotCommitOrCancelNewDuringEdit()
{
// verify that we cannot commit new during an edit
CollectionView.EditItem(CollectionView[0]);
AssertExpectedException(
new InvalidOperationException(string.Format(CultureInfo.InvariantCulture, PagedCollectionViewResources.OperationNotAllowedDuringTransaction, "CommitNew", "EditItem")),
delegate
{
CollectionView.CommitNew();
});
// verify that we cannot cancel new during an edit
CollectionView.EditItem(CollectionView[0]);
AssertExpectedException(
new InvalidOperationException(string.Format(CultureInfo.InvariantCulture, PagedCollectionViewResources.OperationNotAllowedDuringTransaction, "CancelNew", "EditItem")),
delegate
{
CollectionView.CancelNew();
});
}