public void ShouldSeeChangeToBasePropertyWhenBaseObject()
{
var detector = new DerivedChangeDetector();
var tracker = new EntityChangeTracker <TestEntity>(detector);
DerivedEntity entity = new DerivedEntity()
{
IntValue = 123
};
tracker.Attach(entity);
entity.IntValue = 234;
var changes = tracker.DetectChanges();
Assert.AreEqual(1, changes.Count(), "The wrong number of changes were detected.");
IEntityChange <TestEntity> change = changes.Single();
Assert.AreSame(entity, change.Entity, "A change was detected on the wrong entity.");
Assert.AreEqual(EntityState.Modified, change.State, "The entity should have been modified.");
Assert.AreEqual(1, change.GetChanges().Count(), "The wrong number of properties were seen as changed.");
var propertyChange = change.GetChanges().Single();
Assert.AreEqual(TestEntityChangeDetector.IntDescription, propertyChange.DisplayName, "The wrong property was recorded.");
bool hasBaseChange = change.HasChange(x => x.IntValue);
Assert.IsTrue(hasBaseChange, "The change was not detected.");
bool hasDerivedChange = change.As <DerivedEntity>().HasChange(x => x.IntValue);
Assert.IsTrue(hasDerivedChange, "The change was not detected.");
}
public void ShouldSeeChangeToNonDerivedProperty()
{
var detector = new DerivedChangeDetector();
DerivedEntity original = new DerivedEntity()
{
IntValue = 123
};
DerivedEntity updated = new DerivedEntity()
{
IntValue = 234
};
bool hasChange = detector.As <DerivedEntity>().HasChange(x => x.IntValue, original, updated);
Assert.IsTrue(hasChange, "The change was not detected.");
}
public void ShouldDetectChangeToDerivedProperty_OriginalNull()
{
var detector = new DerivedChangeDetector();
DerivedEntity original = null;
DerivedEntity updated = new DerivedEntity()
{
DerivedValue = 234
};
var changes = detector.GetChanges(original, updated);
Assert.AreEqual(1, changes.Count(), "The wrong number of changes were detected.");
IPropertyChange change = changes.Single();
Assert.AreEqual(DerivedChangeDetector.DerivedDescription, change.DisplayName, "The wrong property was recorded.");
Assert.AreEqual(null, change.FormatOriginalValue(), "The old value was not recorded.");
Assert.AreEqual(Formatters.FormatInt32(updated.DerivedValue), change.FormatUpdatedValue(), "The new value was not recorded.");
}
public void ShouldDetectChangeToDerivedPropertyWhenAdding()
{
var detector = new DerivedChangeDetector();
var tracker = new EntityChangeTracker <TestEntity>(detector);
DerivedEntity entity = new DerivedEntity()
{
DerivedValue = 123
};
tracker.Add(entity);
var changes = tracker.DetectChanges();
Assert.AreEqual(1, changes.Count(), "The wrong number of changes were detected.");
IEntityChange <TestEntity> change = changes.Single();
Assert.AreSame(entity, change.Entity, "A change was detected on the wrong entity.");
Assert.AreEqual(EntityState.Added, change.State, "The entity should have been modified.");
Assert.AreEqual(1, change.GetChanges().Count(), "The wrong number of properties were seen as changed.");
}
