public void ReturnsFalseWhenCollectionIsEmpty()
{
HierarchyTreeViewItemCollection collection;
collection = new HierarchyTreeViewItemCollection(Enumerable.Empty <HierarchyTreeViewItem>());
Assert.False(collection.CalculateCheckedState());
}
public void ReturnsNullWhenAllItemsAreIndeterminate()
{
HierarchyTreeViewItemCollection collection;
collection = new HierarchyTreeViewItemCollection(new[] {
Factory.CreateTreeViewItem(isChecked: null),
Factory.CreateTreeViewItem(isChecked: null),
Factory.CreateTreeViewItem(isChecked: null),
});
Assert.Null(collection.CalculateCheckedState());
}
public void ReturnsNullWhenSomeItemsAreChecked()
{
HierarchyTreeViewItemCollection collection;
collection = new HierarchyTreeViewItemCollection(new[] {
Factory.CreateTreeViewItem(isChecked: true),
Factory.CreateTreeViewItem(isChecked: false),
Factory.CreateTreeViewItem(isChecked: true),
});
Assert.Null(collection.CalculateCheckedState());
}
public void ReturnsTrueWhenAllItemsAreChecked()
{
HierarchyTreeViewItemCollection collection;
collection = new HierarchyTreeViewItemCollection(new[] {
Factory.CreateTreeViewItem(isChecked: true),
Factory.CreateTreeViewItem(isChecked: true),
Factory.CreateTreeViewItem(isChecked: true),
});
Assert.True(collection.CalculateCheckedState());
}
public void ReturnsFalseWhenNoItemsAreChecked()
{
HierarchyTreeViewItemCollection collection;
collection = new HierarchyTreeViewItemCollection(new[] {
Factory.CreateTreeViewItem(isChecked: false),
Factory.CreateTreeViewItem(isChecked: false),
Factory.CreateTreeViewItem(isChecked: false)
});
Assert.False(collection.CalculateCheckedState());
}