public void ShouldNotDetectChange_OriginalAndUpdatedNull()
{
var detector = new TestEntityChangeDetector();
TestEntity original = null;
TestEntity updated = null;
Assert.IsFalse(detector.HasChange(a => a.StringValue, original, updated), "Change detected for the property.");
var changes = detector.GetChanges(original, updated);
Assert.AreEqual(0, changes.Count(), "The wrong number of changes were detected.");
}
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 ShouldDetectAllChanges()
{
var detector = new TestEntityChangeDetector();
TestEntity original = new TestEntity()
{
BooleanValue = false,
DateTimeValue = new DateTime(2015, 07, 29),
GuidValue = Guid.NewGuid(),
IntValue = 123,
MoneyValue = 12.34m,
PercentValue = 12.5m,
StringValue = "Hello"
};
TestEntity updated = new TestEntity()
{
BooleanValue = true,
DateTimeValue = new DateTime(2015, 07, 30),
GuidValue = Guid.NewGuid(),
IntValue = 234,
MoneyValue = 10m,
PercentValue = 15m,
StringValue = "Goodbye"
};
Assert.IsTrue(detector.HasChange(e => e.BooleanValue, original, updated), "Boolean value should be changed.");
Assert.IsTrue(detector.HasChange(e => e.DateTimeValue, original, updated), "DateTime value should be changed.");
Assert.IsTrue(detector.HasChange(e => e.GuidValue, original, updated), "Guid value should be changed.");
Assert.IsTrue(detector.HasChange(e => e.IntValue, original, updated), "Int value should be changed.");
Assert.IsTrue(detector.HasChange(e => e.MoneyValue, original, updated), "Money value should be changed.");
Assert.IsTrue(detector.HasChange(e => e.PercentValue, original, updated), "Percent value should be changed.");
Assert.IsTrue(detector.HasChange(e => e.StringValue, original, updated), "String value should be changed.");
var changes = detector.GetChanges(original, updated);
Assert.AreEqual(7, changes.Count(), "The wrong number of changes were detected.");
}