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 ShouldDetectChange_UpdatedNull()
{
var detector = new TestEntityChangeDetector();
TestEntity original = new TestEntity()
{
StringValue = "After"
};
TestEntity updated = null;
Assert.IsTrue(detector.HasChange(a => a.StringValue, original, updated), "No change detected for the property.");
var changes = detector.GetChanges(original, updated);
Assert.AreEqual(1, changes.Count(), "The wrong number of changes were detected.");
IPropertyChange change = changes.Single();
Assert.AreEqual(TestEntityChangeDetector.StringDescription, change.DisplayName, "The wrong property was recorded.");
Assert.AreEqual(Formatters.FormatString(original.StringValue), change.FormatOriginalValue(), "The old value was not recorded.");
Assert.AreEqual(null, change.FormatUpdatedValue(), "The new value was not recorded.");
}
public void ShouldIncludeChangeToDoubleDerivedProperty()
{
var detector = new DoubleDerivedChangeDetector();
DoubleDerivedEntity original = new DoubleDerivedEntity()
{
DoubleDerivedValue = "John"
};
DoubleDerivedEntity updated = new DoubleDerivedEntity()
{
DoubleDerivedValue = "Tom"
};
var changes = detector.GetChanges(original, updated);
Assert.AreEqual(1, changes.Count(), "The wrong number of changes were detected.");
IPropertyChange change = changes.Single();
Assert.AreEqual(DoubleDerivedChangeDetector.DoubleDerivedDescription, change.DisplayName, "The wrong property was recorded.");
Assert.AreEqual(Formatters.FormatString(original.DoubleDerivedValue), change.FormatOriginalValue(), "The old value was not recorded.");
Assert.AreEqual(Formatters.FormatString(updated.DoubleDerivedValue), change.FormatUpdatedValue(), "The new value was not recorded.");
}
