private static void AssertValidState <T, U, V>(INamedSelectionPageModel <T, U, V> selection)
where U : IPageModel
where V : INamedSelectionItemPageModel <T, U>
{
if (selection.SelectedItem == null)
{
AssertNothingSelected(selection);
}
else
{
AssertSingleSelection(selection);
Assert.IsTrue(selection.SelectedItem.IsSelected);
}
}
private static void INamedSelectionPageModel_StandardTests <T, U, V>(INamedSelectionPageModel <T, U, V> selection)
where U : IPageModel
where V : INamedSelectionItemPageModel <T, U>
{
if (!selection.Items.Any())
{
Assert.Inconclusive();
}
if (selection.SelectedItem != null)
{
selection.SelectedItem.SetSelected(false);
AssertValidState(selection);
}
foreach (var name in selection.Items.Select(x => x.Name))
{
selection.SetValueText(name);
AssertValidState(selection);
Assert.IsTrue(StringComparer.Ordinal.Equals(selection.SelectedItem.Name, name));
}
}
private static void AssertSingleSelection <T, U, V>(INamedSelectionPageModel <T, U, V> selection)
where U : IPageModel
where V : INamedSelectionItemPageModel <T, U>
{
Assert.IsTrue(selection.Items.SkipWhile(x => !x.IsSelected).Skip(1).All(x => !x.IsSelected));
}
private static void AssertNothingSelected <T, U, V>(INamedSelectionPageModel <T, U, V> selection)
where U : IPageModel
where V : INamedSelectionItemPageModel <T, U>
{
Assert.IsTrue(selection.Items.All(x => !x.IsSelected));
}