public void RefreshOfMultiSelectionProperty_RefreshesAllItemsAndSelectedItems()
{
var allGroups = new List <Group> {
Group1
};
var selectedGroups = new List <Group> {
Group1
};
UserVM vm = CreateUserVM(
allGroupsSelector: x => allGroups,
selectedGroupsSelector: x => selectedGroups
);
Assert.AreEqual(1, vm.Groups.SelectedItems.Count); // Trigger initial load
allGroups = new List <Group> {
Group2
};
selectedGroups = new List <Group> {
Group2
};
vm.RefreshGroups();
AssertAllItemsAreEqual(vm, allGroups);
CollectionAssert.AreEqual(
selectedGroups,
vm.Groups.SelectedItems.Select(x => x.Source).ToArray()
);
}
public void UpdateFromSource_RaisesExpectedEvents()
{
var allGroups = new List <Group> {
Group1
};
var selectedGroups = new List <Group> {
Group1
};
UserVM vm = CreateUserVM(
allGroupsSelector: x => allGroups,
selectedGroupsSelector: x => selectedGroups
);
Assert.AreEqual(1, vm.Groups.SelectedItems.Count); // Trigger initial load
allGroups = new List <Group> {
Group2
};
selectedGroups = new List <Group> {
Group2
};
string eventSequence = "|";
vm.Groups.PropertyChanged += (_, e) => {
if (e.PropertyName == "SelectedItems")
{
eventSequence += ("PropertyChanged" + "|");
}
};
((IBindingList)vm.Groups.AllItems).ListChanged += (_, e) => {
eventSequence += ("ListChanged" + "|");
};
vm.RefreshGroups();
Assert.IsTrue(eventSequence.Contains("|ListChanged|PropertyChanged|")); // TODO: Investigate why so many events are raised.
}
public void UpdateFromSource()
{
UserVM vm = CreateUserVMWithItems();
vm.RefreshGroups();
}