public void TestComparerChangedEvent()
{
var root = CreateTestTree();
var oldComparer = root.Comparer;
var valueComparer = Comparer <ValueClass> .Create((v1, v2) =>
v1.GetHashCode().CompareTo(v2.GetHashCode()));
var comparer = ObservableSortedTree <ValueClass> .TransformValueToTreeComparer(valueComparer);
bool comparerChanged_raised = false;
root.ComparerChanged += (sender, oldComp) =>
{
comparerChanged_raised = true;
Assert.IsTrue(ReferenceEquals(root, sender));
Assert.IsTrue(ReferenceEquals(oldComparer, oldComp));
};
root.Comparer = comparer;
Assert.IsTrue(comparerChanged_raised);
}
public void TestComparersEqualAfterUpdate()
{
var root = CreateTestTree();
var oldComparer = root.Comparer;
var valueComparer = Comparer <ValueClass> .Create((v1, v2) =>
v1.GetHashCode().CompareTo(v2.GetHashCode()));
var comparer = ObservableSortedTree <ValueClass> .TransformValueToTreeComparer(valueComparer);
root.Comparer = comparer;
foreach (var tree in root.AsEnumerable())
{
Assert.IsTrue(ReferenceEquals(tree.Comparer, comparer));
Assert.IsTrue(ReferenceEquals(tree.Children.Comparer, comparer));
}
root.Comparer = oldComparer;
foreach (var tree in root.AsEnumerable())
{
Assert.IsTrue(ReferenceEquals(tree.Comparer, oldComparer));
Assert.IsTrue(ReferenceEquals(tree.Children.Comparer, oldComparer));
}
}