public void ManagerShouldUseOneContextForOneObject()
{
var context = new ExplicitDataContext();
var manager = CreateContextManager();
var bindingContext = manager.GetBindingContext(context);
manager.GetBindingContext(context).ShouldEqual(bindingContext);
}
public void ManagerShouldUseExplicitDataContextGet()
{
var o = new object();
var context = new ExplicitDataContext();
var manager = CreateContextManager();
var bindingContext = manager.GetBindingContext(context);
bindingContext.Value.ShouldBeNull();
context.DataContext = o;
bindingContext.Value.ShouldEqual(o);
}
public void ManagerShouldRaiseEventWhenDataContextChanged()
{
bool isInvoked = false;
var context = new ExplicitDataContext();
var manager = CreateContextManager();
var bindingContext = manager.GetBindingContext(context);
bindingContext.ValueChanged += (sender, args) => isInvoked = true;
isInvoked.ShouldBeFalse();
bindingContext.Value = context;
isInvoked.ShouldBeTrue();
}
public void ManagerShouldUseWeakReferenceForTarget()
{
var o = new object();
var context = new ExplicitDataContext { DataContext = o };
var manager = CreateContextManager();
var bindingContext = manager.GetBindingContext(context);
bindingContext.Value.ShouldEqual(o);
context = null;
GC.Collect();
GC.WaitForPendingFinalizers();
GC.Collect();
bindingContext.Value.ShouldBeNull();
}
public void ProviderShouldUseImplicitBindingContextIfFlagIsFalse()
{
var model = new ExplicitDataContext();
var path = GetMemberPath(model, context => context.DataContext);
var provider = CreateMemberProvider();
var member = provider.GetBindingMember(typeof(ExplicitDataContext), path, false, true);
member.MemberType.ShouldEqual(BindingMemberType.BindingContext);
}
public void ManagerShouldObserveExplicitDataContext()
{
bool isInvoked = false;
var o = new object();
var context = new ExplicitDataContext { DataContext = o };
var providerMock = new ObserverProviderMock();
var manager = CreateContextManager(observerProvider: providerMock);
providerMock.Observe = (o1, path, arg3) =>
{
o1.ShouldEqual(context);
path.Path.ShouldEqual(AttachedMemberConstants.DataContext);
arg3.ShouldBeTrue();
isInvoked = true;
return new ObserverMock();
};
manager.GetBindingContext(context);
isInvoked.ShouldBeTrue();
}
public void ManagerShouldRaiseEventWhenObserverValueChanged()
{
bool isInvoked = false;
var o = new object();
var context = new ExplicitDataContext { DataContext = o };
var providerMock = new ObserverProviderMock();
var observerMock = new ObserverMock();
var manager = CreateContextManager(observerProvider: providerMock);
providerMock.Observe = (o1, path, arg3) => observerMock;
var bindingContext = manager.GetBindingContext(context);
bindingContext.ValueChanged += (sender, args) => isInvoked = true;
isInvoked.ShouldBeFalse();
observerMock.RaiseValueChanged();
isInvoked.ShouldBeTrue();
}