internal void EventIDTests(
DateTime timestamp,
BatchID batchID,
EventID id,
EventID next
)
{
GIVEN["a BatchID"] = () => batchID = new BatchID(timestamp = DateTime.UtcNow);
WHEN["calling GetFirst"] = () => id = EventID.GetFirst(batchID);
THEN["a new value with given batch ID is returned"] = () => id.BatchID.Should().Be(batchID);
AND["its Sequence is 1"] = () => id.Sequence.Should().Be(1);
WHEN["calling GetNext"] = () => next = id.GetNext();
THEN["a new EventID is returned"] = () => next.Should().NotBeSameAs(id);
AND["its BatchID is the original one"] = () => next.BatchID.Should().Be(batchID);
AND["its Sequence is 2"] = () => next.Sequence.Should().Be(2);
GIVEN["a EventID with max sequence"] = () => {
id = EventID.GetFirst(batchID);
for (int i = 2; i <= 65535; i++)
{
id = id.GetNext();
}
id.Sequence.Should().Be(65535);
};
WHEN["calling GetNext", ThenIsThrown <InvalidOperationException>()] = () => id.GetNext();
}