public void TestFilter()
{
//arrange
var child = new Mock <IExplorerItemViewModel>();
child.SetupGet(it => it.IsVisible).Returns(true);
_target.Children = new ObservableCollection <IExplorerItemViewModel>()
{
child.Object
};
var isChildrenChanged = false;
_target.PropertyChanged += (s, e) =>
{
isChildrenChanged = isChildrenChanged || e.PropertyName == "Children";
};
var filterText = "someFilterText";
//act
_target.Filter(filterText);
//assert
child.Verify(it => it.Filter(filterText));
Assert.IsTrue(isChildrenChanged);
}
