public void Add_child_appends_view_to_children()
{
var layout = new TestLayout();
var child1 = new TestView();
var child2 = new TestView();
layout.Add(child1);
layout.Add(child2);
layout.Children.Should().BeEquivalentSequenceTo(child1, child2);
}
public void Adding_null_child_throws_exception()
{
var layout = new TestLayout();
Action addNullChild = () => layout.Add(null);
addNullChild.Should().Throw <ArgumentNullException>();
}
public void Child_added_to_layout_registers_for_updated()
{
var layout = new TestLayout();
var view = new TestView();
layout.Add(view);
view.RaiseUpdated();
layout.OnChildUpdatedInvocationCount.Should().Be(1);
}
public void Removing_child_from_layout_unregisters_for_updated()
{
var layout = new TestLayout();
var view = new TestView();
layout.Add(view);
layout.Remove(view);
view.RaiseUpdated();
layout.OnChildUpdatedInvocationCount.Should().Be(0);
layout.Children.Should().BeEmpty();
}
public void Clearing_children_removes_all_child_views()
{
var layout = new TestLayout();
var view1 = new TestView();
var view2 = new TestView();
layout.Add(view1);
layout.Remove(view2);
layout.Clear();
layout.Children.Should().BeEmpty();
}