<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto"><div dir="ltr"></div><div dir="ltr">So it can’t synchronously test arbitrary code, just code written in a certain style using a restricted api set?</div><div dir="ltr"><br><blockquote type="cite">On Jul 8, 2025, at 10:07 AM, Yannick Lecaillez <yannick.lecaillez@pingidentity.com> wrote:<br><br></blockquote></div><blockquote type="cite"><div dir="ltr"><div dir="ltr"><div dir="ltr">On Tue, Jul 8, 2025 at 4:31 PM Robert Engels <<a href="mailto:robaho@me.com">robaho@me.com</a>> wrote:</div><div class="gmail_quote gmail_quote_container"><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="auto"><div dir="ltr"></div><div dir="ltr">I am curious though - what if the application code uses async native type calls (NIO). What would be synchronous testing in this? I assume it would have to behave as if it was synchronous - callback immediately called - but that’s not how it works in the real world - so what are you testing ?</div></div></blockquote><div><br>All that is quite early stage but we have a tiny network simulator PoC (based on the blocking Socket API) which is deterministic and allows us to inject fake failures and latencies.<br>We don't use async I/O anymore, thanks to Loom. No async, no callback.<br></div></div></div>
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