public void WhenCalledConvert_CreatesNewViewOrReturnsCachedOneIfAny()
{
var converter = new EditorSelector();
var privateAccessor = new PrivateAccessor(converter);
EditorSelector.ResetComposedConverter();
var view = new UserControl();
const string fieldType = "testFieldType";
converter.EditorFactories = new[]
{
new ExportFactory<UserControl, IExportAsControlForTypeMetadata>(
() => new Tuple<UserControl, Action>(view, () => { }),
new ExportAsControlForTypeAttribute(fieldType))
};
var fieldItemMock = Mock.Create<IFieldItem>(Behavior.CallOriginal);
Mock.Arrange(() => fieldItemMock.FieldType).Returns(fieldType);
Mock.Arrange(() => fieldItemMock.CanEdit).Returns(true);
Mock.Arrange(() => fieldItemMock.CanView()).Returns(true);
Mock.Arrange(() => fieldItemMock.IsInformationOnly).Returns(false);
var returnedView = (UserControl)converter.Convert(fieldItemMock, new TypeDelegator(typeof (object)), new object(), null);
Assert.AreEqual(view.GetType(), returnedView.GetType());
Assert.AreSame(fieldItemMock, returnedView.DataContext);
Assert.IsTrue(returnedView.IsEnabled);
//check that view was cached in RegisteredViews table
UserControl cachedView;
var registeredViews = privateAccessor.GetField("RegisteredViews") as ConditionalWeakTable<IFieldItem, UserControl>;
Assert.IsNotNull(registeredViews);
Assert.IsTrue(registeredViews.TryGetValue(fieldItemMock, out cachedView));
//remove cached view to ensure that converter will create a new one
registeredViews.Remove(fieldItemMock);
Mock.Arrange(() => fieldItemMock.CanEdit).Returns(false);
Mock.Arrange(() => fieldItemMock.CanView()).Returns(false);
returnedView = (UserControl)converter.Convert(fieldItemMock, new TypeDelegator(typeof(object)), new object(), null);
Assert.AreEqual(view.GetType(), returnedView.GetType());
Assert.AreSame(fieldItemMock, returnedView.DataContext);
Assert.IsFalse(returnedView.IsEnabled);
//now converter should return the cached view
Mock.Arrange(() => fieldItemMock.CanEdit).Returns(true);
Mock.Arrange(() => fieldItemMock.CanView()).Returns(true);
var returnedCachedView = (UserControl)converter.Convert(fieldItemMock, new TypeDelegator(typeof(object)), new object(), null);
Assert.IsTrue(ReferenceEquals(returnedView, returnedCachedView));
Assert.AreSame(fieldItemMock, returnedCachedView.DataContext);
Assert.IsFalse(returnedCachedView.IsEnabled);
}
public void WhenCalledConvertBack_RaiseNotImplementedException()
{
var converter = new EditorSelector();
converter.ConvertBack(new object(), new TypeDelegator(typeof(object)), new object(), null);
}
