public void ChangeTrackerTest()
{
var entity = new MockEntity();
entity.EntityLoadCompleted();
Assert.IsFalse(entity.HasChanges);
var changesSnapshot1 = entity.GetChanges();
Assert.IsFalse(changesSnapshot1.Any());
AssertHelper.PropertyChangedEvent(entity, x => x.HasChanges, () => entity.Name = "Bill");
Assert.IsTrue(entity.HasChanges);
var changesSnapshot2 = entity.GetChanges();
Assert.IsFalse(changesSnapshot1.Any());
Assert.AreEqual("Name", changesSnapshot2.Single());
AssertHelper.PropertyChangedEvent(entity, x => x.HasChanges, () => entity.ClearChanges());
Assert.IsFalse(entity.HasChanges);
var changesSnapshot3 = entity.GetChanges();
Assert.IsFalse(changesSnapshot1.Any());
Assert.AreEqual("Name", changesSnapshot2.Single());
Assert.IsFalse(changesSnapshot3.Any());
entity.Name = "Bill";
Assert.IsFalse(entity.HasChanges);
}
public void EntityHasChangesTest()
{
int entityHasChangesCallCount = 0;
changeTrackerService.EntityHasChangesAction = e => entityHasChangesCallCount++;
// No change tracking during loading state
var entity = new MockEntity();
entity.Name = "Bill";
Assert.AreEqual(0, entityHasChangesCallCount);
Assert.IsFalse(entity.HasChanges);
// Start change tracking when load completed
entity.EntityLoadCompleted();
entity.Name = "Steve";
Assert.AreEqual(1, entityHasChangesCallCount);
Assert.IsTrue(entity.HasChanges);
}
