void Can_handle_id_overflow_by_filling_spots()
{
ObjectTagger tagger = new ObjectTagger(10);
List <object> handledObjects = new List <object>();
for (int i = 0; i < 9; i++)
{
var obj = new object();
tagger.GetOrCreateTag(obj);
handledObjects.Add(obj);
}
// Ids are all used.
handledObjects.Clear();
GC.Collect(2, GCCollectionMode.Forced, true);
Thread.Sleep(100);
// The next one is the already prepared next id.
var obj10 = new object();
var tag10 = tagger.GetOrCreateTag(obj10);
tag10.Should().Be(10ul);
// The next after that will overflow.
var obj1 = new object();
var tag1 = tagger.GetOrCreateTag(obj1);
tag1.Should().Be(1ul);
}
void Can_deliver_same_tag_for_same_instance()
{
ObjectTagger tagger = new ObjectTagger();
var obj = new object();
var tag1 = tagger.GetOrCreateTag(obj);
var tag2 = tagger.GetOrCreateTag(obj);
tag1.Should().Be(tag2);
}
void Can_detect_id_overflow()
{
ObjectTagger tagger = new ObjectTagger(10);
List <object> handledObjects = new List <object>();
for (int i = 0; i < 9; i++)
{
var obj = new object();
tagger.GetOrCreateTag(obj);
handledObjects.Add(obj);
}
var lastObj = new object();
Assert.Throws <Exception>(() => { tagger.GetOrCreateTag(lastObj); });
}