public void ObserverShouldUseBindingContextAsSource()
{
var model = new BindingSourceModel();
var contextMock = new BindingContextMock { Value = model };
var propertyName = GetMemberPath<BindingSourceModel>(sourceModel => sourceModel.StringProperty);
var observer = CreateObserver(contextMock, propertyName, false);
observer.Source.ShouldEqual(contextMock);
var members = observer.GetPathMembers(true);
members.AllMembersAvailable.ShouldBeTrue();
members.Members.Single().Type.ShouldEqual(typeof(string));
observer.Path.Path.ShouldEqual(propertyName);
}
public void ProviderShouldReturnMemberForBindingContext()
{
const string path = AttachedMemberConstants.DataContext;
var model = new BindingSourceModel();
var contextMock = new BindingContextMock();
BindingServiceProvider.ContextManager = new BindingContextManagerMock
{
GetBindingContext = o => contextMock
};
var provider = CreateMemberProvider();
var member = provider.GetBindingMember(typeof(object), path, false, true);
member.CanRead.ShouldBeTrue();
member.CanWrite.ShouldBeTrue();
member.Type.ShouldEqual(typeof(object));
member.MemberType.ShouldEqual(BindingMemberType.BindingContext);
member.Path.ShouldEqual(path);
member.Member.ShouldBeNull();
member.GetValue(model, null).ShouldBeNull();
member.SetValue(model, new object[] { model });
member.GetValue(model, null).ShouldEqual(model);
contextMock.Value.ShouldEqual(model);
}
public void ObserverShouldUpdateInformationWhenContextChangedNotValidContext()
{
var model = new BindingSourceModel();
var contextMock = new BindingContextMock { Value = model, Source = new object() };
var propertyName = GetMemberPath<BindingSourceModel>(sourceModel => sourceModel.StringProperty);
var observer = CreateObserver(contextMock, propertyName, false);
var members = observer.GetPathMembers(true);
members.Members.Single().Type.ShouldEqual(typeof(string));
observer.Path.Path.ShouldEqual(propertyName);
contextMock.Value = new object();
members = observer.GetPathMembers(false);
members.Members.ShouldBeEmpty();
observer.Path.Path.ShouldEqual(propertyName);
}
public void ObserverShouldUpdateInformationWhenContextChangedHasStablePathTrueComplexPath()
{
var model = new BindingSourceModel { NestedModel = new BindingSourceNestedModel { StringProperty = "st" } };
var contextMock = new BindingContextMock { Value = model, Source = new object() };
var propertyName = GetMemberPath<BindingSourceModel>(sourceModel => sourceModel.NestedModel.StringProperty);
var observer = CreateObserver(contextMock, propertyName, false, hasStablePath: true);
var members = observer.GetPathMembers(true);
members.Members.Last().Type.ShouldEqual(typeof(string));
observer.Path.Path.ShouldEqual(propertyName);
members.LastMember.GetValue(members.PenultimateValue, null).ShouldEqual(model.NestedModel.StringProperty);
var model2 = new BindingSourceModel { NestedModel = new BindingSourceNestedModel { StringProperty = "st1" } };
contextMock.Value = model2;
members = observer.GetPathMembers(true);
members.Members.Last().Type.ShouldEqual(typeof(string));
observer.Path.Path.ShouldEqual(propertyName);
members.LastMember.GetValue(members.PenultimateValue, null).ShouldEqual(model2.NestedModel.StringProperty);
}
