public void ChangeTracking_EntitySubCollectionTracking()
{
var wh = new WorkHistory {
Name = "Avanade"
};
var pd = new PersonDetail {
History = new WorkHistoryCollection {
wh
}
};
pd.AcceptChanges();
Assert.IsFalse(pd.IsChanged);
Assert.IsFalse(pd.History.IsChanged);
Assert.IsFalse(wh.IsChanged);
pd.TrackChanges();
wh.Name = "Accenture";
Assert.IsTrue(wh.IsChanged);
Assert.AreEqual(new System.Collections.Specialized.StringCollection {
"Name"
}, wh.ChangeTracking);
Assert.IsTrue(pd.History.IsChanged);
Assert.IsNull(pd.History.ChangeTracking); // Collections always return null.
Assert.IsTrue(pd.IsChanged);
Assert.AreEqual(new System.Collections.Specialized.StringCollection {
"History"
}, pd.ChangeTracking);
}
