* null values as eo has not yet been saved.
*/
EOEntity entity = employee.entity();
for (String key : (NSArray<String>) entity.classPropertyNames()) {
Object snapshotValue = snapshot.valueForKey(key);
assertEquals(employee.valueForKey(key), ERXValueUtilities.isNull(snapshotValue) ? null : snapshotValue);
assertTrue(ERXValueUtilities.isNull(committedSnapshot.valueForKey(key)));
}
ec.saveChanges();