public void GivenUnseenEventsAndNoUncommittedEvents_WhenTestingForConflicts_ThenFindNoConflicts()
{
// Arrange
IConcurrencyMonitor monitor = new StrictConcurrencyMonitor();
IEnumerable<object> unseenEvents = new[] { new UserRegistered(Guid.NewGuid()) };
IEnumerable<object> uncommittedEvents = Enumerable.Empty<object>();
// Act
IEnumerable<ConcurrencyConflict> conflicts = monitor.CheckForConflicts(unseenEvents, uncommittedEvents);
// Assert
CollectionAssert.IsEmpty(conflicts, "Conflicts have been returned where there should be none.");
}
public void GivenUnseenEvents_WhenTestingForConflicts_ThenFindConflicts()
{
// Arrange
var userId = Guid.NewGuid();
IConcurrencyMonitor monitor = new StrictConcurrencyMonitor();
IEnumerable<object> unseenEvents = new[] { new UserChangedPassword("newpassword") };
IEnumerable<object> uncommittedEvents = new[] { new UserChangedPassword("differentnewpassword") };
// Act
IList<ConcurrencyConflict> conflicts = monitor.CheckForConflicts(unseenEvents, uncommittedEvents).ToList();
// Assert
Assert.AreEqual(1, conflicts.Count, "Expected one and only one conflict.");
var conflict = conflicts.Single();
CollectionAssert.AreEqual(unseenEvents, conflict.UnseenEvents);
CollectionAssert.AreEqual(uncommittedEvents, conflict.UncommittedEvents);
Assert.AreEqual("Changes conflict with one or more committed events.", conflict.Message);
}
