public void raises_concurrency_issue()
{
var aggregate = new SimpleEventSourcedRoot();
var result = aggregate.Must().HaveVersion(1);
result.Should().BeInvalid().WithMessage(ConcurrencyIssue.VersionMismatch(1, 0));
}
public static Result <TAggregate> HaveVersion <TAggregate>(this Must <TAggregate> must, int expected)
where TAggregate : AggregateRoot <TAggregate>, new()
{
Guard.NotNull(must, nameof(must));
Guard.NotNegative(expected, nameof(expected));
int actual = ((dynamic)must.Subject).Version;
return(must.Be(actual == expected, ConcurrencyIssue.VersionMismatch(expected, actual)));
}