when using check for two sequences, and in case when those are vary large and not equal (in nim-libp2p/nim-quic we create sequences of few hundred MB) output created overflows entire stdout.
when comparing sequences, or anything that has length, it would be better to have size of sequence in mind when doing output.
in nim-quic repo we have created checkEqual utility that does same thing as check but creates human friend output. this utility might be further improved to output both values if lengths are below some threshold.
it would be nice if check has similar behavior.